Aston Dual Hydronic Unit

GTW Installation Manual

Geothermal Hydronic Heat Pump

•

R-410A

Refrigerant

•

8-15

Tons

Installation Information Water Piping Connections Electrical Data

Microprocessor Control Startup Procedures Preventive Maintenance

Table of Contents

Model Nomenclature . . . 4

General Installation Information . . . 5

Dimensional Data . . . 6

Physical Data . . . 7

Field Connected Water Piping. . . 8-9

GTW Typical Application Piping . . . 10

Water Quality . . . .11

Electrical Data. . . 12

Wiring Schematics . . . 13-16

Field Wiring and Controls Setup. . . 17-18

Control Features. . . 19-20

Sequence of Operation . . . 21

Inputs and Output Configuration . . . 22

Unit Display and Interface . . . 23-25

Reference Calculations . . . 26

Legend and Notes . . . 26

Unit Startup . . . 27

Operating Parameters . . . 28

Load and Source Pressure Drop. . . 29

Thermistor and Compressor Resistance . . . 29

Heat of Extraction/Rejection Data. . . 29

Heating and Cooling Cycle Analysis . . . 30

Startup and Troubleshooting Form . . . 31

Troubleshooting . . . 32

Preventative Maintenance . . . 33

Service Parts List . . . 34

Model Nomenclature

Rev.: 10 Oct 2020B

GTW 120 R 1 H A B

1-3 4-6 7 8 9 10 11

Model

GTW – Aston Series Two Stage Hydronic Heat Pump

Unit Capacity (MBTUH)

100, 120, 150, 180 Operation R - Reversible Voltage 1 – 208-230/60/1 (Residential) 1 0 – 208-230/60/1 (Commercial)1 3 – 208-230/60/3 4 – 460/60/3 5 – 575/60/3 Vintage

* – Factory Use Only

Non-Standard Options

S – Standard

Control Box Location

1 – Front 2 – Back

Water Connections

B – Back Mounted Connections T – Top Mounted Connections

IntelliStartTM_Option

N – None A – IntelliStart2 Controls

H – Aurora Advanced Controls with Energy and Refrigeration Monitoring Hydrozone 0 (HZ0) included S 13 * 14 Notes:

1 – Dual power feed required.

2 – IntelliStart Option available for single phase voltage options only.

1 12

Safety Considerations

Installing and servicing air conditioning and heating equipment can be hazardous due to system pressure and electrical components. Only trained and qualified service personnel should install, repair or service heating and air conditioning equipment. When working on heating and air conditioning equipment, observe precautions in the literature, tags and labels attached to the unit and other safety precautions that may apply.

Follow all safety codes. Wear safety glasses and work gloves. Use quenching cloth for brazing operations. Have fire extinguisher available for all brazing operations.

NOTE: Before installing, check voltage of unit(s) to ensure

proper voltage.

WARNING: Before performing service or maintenance operations on the system, turn off main power switches to the unit. Electrical shock could cause serious personal injury.

Application

Units are not intended for heating domestic (potable) water by direct coupling. If used for this type of application, a secondary heat exchanger must be used.

Moving and Storage

Move units in the normal “Up” orientation as indicated by the labels on the unit packaging. When the equipment is received, all items should be carefully checked against the bill of lading to ensure that all crates and cartons have been received in good condition. Examine units for shipping damage, removing unit packaging if necessary to properly inspect unit. Units in question should also be internally inspected. If any damage is observed, the carrier should make the proper notation on delivery receipt acknowledging the damage. Units are to be stored in a location that provides adequate protection from dirt, debris and moisture.

WARNING: To avoid equipment damage, do not leave the system filled in a building without heat during cold weather, unless adequate freeze protection levels of antifreeze are used. Heat exchangers do not fully drain and will freeze unless protected, causing permanent damage.

General Installation Information

Unit Location

Provide sufficient room to make water and electrical connections. If the unit is located in a confined space, provisions must be made for unit servicing. Locate the unit in an indoor area that allows easy removal of the access panels and has enough space for service personnel to perform maintenance or repair. These units are not approved for outdoor installation and, therefore, must be installed inside the structure being conditioned. Do not locate units in areas subject to freezing conditions.

WARNING: Do not store or install units in corrosive environments or in locations subject to temperature or humidity extremes (e.g. attics, garages, rooftops, etc.). Corrosive conditions and high temperature or humidity can significantly reduce performance, reliability, and service life. WARNING: To avoid equipment damage and possible voiding of warranty, be sure that properly sized strainers are installed upstream of both brazed plate heat exchangers to protect them against particles in the fluid.

Mounting Units

Prior to setting the unit in place, remove and discard both compressor hold down shipping bolts located at the front of each compressor mounting bracket. Units should be mounted level on a vibration absorbing pad slightly larger than the base to provide isolation between the unit and the floor. It is not necessary to anchor the unit to the floor. Allow access to the front, back, and side access panels for servicing.

Dimensional Data

CONTROL BOX 2' ALTERNATE SERVICE ACCESS OPTIONAL LOW VOLTAGE (7/8" KNOCKOUT) OPTIONAL TOP WATER CONNECTIONS LINE VOLTAGE (1-3/8" KNOCKOUTS) LOW VOLTAGE (7/8" KNOCKOUT) CONTROL BOX BACK LOCATION 12.11 33.60 25.58 24.01 10.18 12.11 14.05 5.28 5.82 2.26 21.07 2.26 LOAD SOURCE FRONT BACK WATERLINES 2' PRIMARY SERVICE ACCESS LOAD SOURCE CONTROL BOX FRONT LOCATION 2' ALTERNATE SERVICE ACCESS

OPTIONAL LOW VOLTAGE (7/8" KNOCKOUT) LINE VOLTAGE (1-3/8" KNOCKOUTS) LOW VOLTAGE (7/8" KNOCKOUT) CONTROL BOX 17.00 12.11 33.59 25.58 24.01 2.16 21.06 2.16 2.96 10.18 12.11 14.05 FRONT BACK WATERLINES 2' PRIMARY SERVICE ACCESS

100-180 - Top Waterline Configuration

Physical Data

Model Model

100 120 150 180

Compressor (2 each) Scroll

Factory Charge R410A, oz [kg] 62 [1.76] 62 [1.76] 62 [1.76] 62 [1.76]

Load Water Connection

FPT - in 2 2 2 2

Source Water Connection

FPT - in 2 2 2 2

Weight - Operating, lb [kg] 390 [177] 400 [181] 400 [181] 420 [190] Weight - Packaged, lb [kg] 385 [175] 395 [179] 395 [179] 415 [188]

General

Each unit is equipped with captive 2 in. [50.8 mm] FPT water connections to eliminate ‘egg-shaping’ from use of a backup wrench. For making the water connections to the unit, a Teflon tape thread sealant is recommended to minimize internal fouling of the piping. Do not over tighten connections.

NOTE: Units are factory run-tested using propylene glycol. Prior to connecting piping to unit, thoroughly flush heat exchangers.

The piping installation should provide service personnel with the ability to measure water temperatures and pressures. The water lines should be routed so as not to interfere with access to the unit. The use of a short length of high pressure hose with a swivel type fitting may simplify the connections and prevent vibration. Optional stainless steel hose kits are available as an accessory item.

Before final connection to the unit, the supply and return hose kits must be connected, and the system flushed to remove dirt, piping chips and other foreign material. Normally, a combination balancing and close-off (ball) valve is installed at the return, and a rated gate or ball valve is installed at the supply. The return valve can be adjusted to obtain the proper water flow. The valves allow the unit to be removed for servicing. Both source as well as load fluid piping must be at least as large as the unit connections on the heat pump (larger on long runs).

Never use flexible hoses of a smaller inside diameter than that of the water connection on the unit and limit hose length to 10 ft. per connection. Check carefully for water leaks.

Load and Source Piping Connections

The Two-Stage Hydronic Series has two connection options available. Each kit is intended to connect one piping

connection. Therefore, two kits will be required for each unit. The kits can be mixed for installer convenience, one on source and the other on load.

CKNDW1 - Strainer Connection Kit includes a 2” copper tee with

integral P/T plug and a 2” “Y” strainer. Other components to complete the all copper piping can be sourced locally.

WFI-XYH200-F-24MO-M - Strainer Hose Kit set includes

2” Hose kit includes a 2” stainless steel braided hose with integral P/T plug and 2” “Y” strainer.

Field Connected Water Piping

Water Flow Rate

The proper water flow must be delivered to each unit whenever the unit heats or cools. To assure proper flow, the use of pressure/temperature ports is recommended to determine the flow rate. These ports should be located adjacent to the supply and return connections on the unit. The proper flow rate cannot be accurately set without measuring the water pressure drop through the refrigerant-to-water heat exchanger (See Pressure Drop Table for water flow and pressure drop information).

Load Flow Rate

The load flow on all water to water products should be 3 gpm per ton (typically the rated flow and the highest flow shown in the capacity charts). Refer to the table below. This flow rate is required especially when heating water to limit the effects of the higher condensing temperatures of water heating for radiant floor heating or domestic water use.

Source Flow Rate

The source flow can range between 2.25 and 3 gpm per ton for earth loops. For open loop well water systems the minimum flow should be 1.5 gpm per ton. In earth loop systems where entering water temperatures are expected to be above 95°F, 3 gpm per ton should be used. In well systems where the water temperature is below 50°F, 2 gpm per ton should be used to avoid nuisance freeze detection trips.

Flushing

Flushing the system of debris is especially important in brazed plate heat exchanger systems. These systems have many small parallel flow paths in which debris can clog. Initial flushing of the system can be accomplished in one of two ways. First flushing the piping system toward the strainer will allow the strainers to capture all debris prior the heat exchangers and commissioning. Secondly a temporary bypass can be included in the piping design so that the heat pump itself can be bypassed during the initial flushing stage with an external strainer gathering the debris.

CAUTION: Water piping exposed to outside temperature may be subject to freezing.

Source Flow Rate

Load Flow Rate Minimum Open Loop Open Loop < 50°F

Closed Loop Range (Min - Full Flow)

100 15 20 23 30 30 120 18 24 27 36 36 150 21 28 32 42 42 180 24 32 36 48 48 CKNDW1 WFI-XYH200-F-24MO-M

Field Connected Water Piping cont.

Closed Loop Tower/Boiler Systems

The water loop is usually maintained between 60°F [15.5°C] and 90°F [32.2°C] for proper heating and cooling operation. This is accomplished with a cooling tower and a boiler. To reject excess heat from the condenser water loop, the use of a closed-circuit evaporative cooler or an open type cooling tower with a secondary heat exchanger between the tower and the condenser water loop is recommended. If an open type cooling tower is used without a secondary heat exchanger, continuous chemical treatment and filtering of the water must be performed to ensure the water is free from damaging materials.

CAUTION: Water piping exposed to outside temperature may be subject to freezing.

Open Loop Well Water Systems

Installation of an open loop system is not recommended unless water quality guidelines are met.

Earth Coupled Systems

All supply and return water piping should be insulated to prevent excess condensation from forming on the water lines. Ensure pumping system is capable of providing adequate flow rate at the system pressure drop, 3.0 GPM per ton [0.054 LPS per kW] (source side) is recommended. Antifreeze in the loop is strongly recommended.

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Typical Application Piping

LOAD PUMP HYDRONIC LOAD Source OUT P/T Ports Ball Valve Dielectric Unions Dielectric Unions WaterFurnace NDW Series

NOTE: * A 30 PSI pressure relief valve

(Part No: SRV30) should be used in hydronic applications. 1-1/2˝ FPT Expansion Tank Air Vent Pressure Gauge 30 PSI RELIEF VALVE Air Separator Back Flow Preventer /

Pressure Relief Valve

GEO STORAGE TANK 3-Way Valves Y-Strainer (required to prevent damage from fouling) Hose Kit Pressure Reduction Pressure Reduction Hose Kit P/T Ports Source IN Y-Strainer (required to prevent damage from fouling) Flow Switch

(optional)

General

Hydronic systems may be successfully applied in a wide range of residential, commercial, and industrial applications. It is the responsibility of the system designer and installing contractor to ensure that acceptable water quality is present and that all applicable codes have been met in these installations.

Water Treatment

Do not use untreated or improperly treated water. Equipment damage may occur. The use of improperly treated or untreated water in this equipment may result in scaling, erosion, corrosion, algae or slime. The services of a qualified water treatment specialist should be engaged to determine what treatment, if any, is required. The product warranty specifically excludes liability for corrosion, erosion or deterioration of equipment. The heat exchangers in the units are 316 stainless steel plates with copper brazing. The water piping in the heat exchanger is steel. There may be other materials in the building’s piping system that the designer may need to take into consideration when deciding the parameters of the water quality.

If an antifreeze or water treatment solution is to be used, the designer should confirm it does not have a detrimental effect on the materials in the system.

Contaminated Water

In applications where the water quality cannot be held to prescribed limits, the use of a secondary or intermediate heat exchanger is recommended to separate the unit from the contaminated water.

Material Copper 90/10 Cupronickel 316 Stainless Steel

pH Acidity/Alkalinity 7 - 9 7 - 9 7 - 9

Scaling Calcium and

Magnesium Carbonate (Total Hardness) less than 350 ppm (Total Hardness) less than 350 ppm (Total Hardness) less than 350 ppm Corrosion

Hydrogen Sulfide Less than 0.5 ppm (rotten egg

smell appears at 0.5 ppm) 10 - 50 ppm Less than 1 ppm Sulfates Less than 125 ppm Less than 125 ppm Less than 200 ppm Chlorine Less than 0.5 ppm Less than 0.5 ppm Less than 0.5 ppm Chlorides Less than 20 ppm Less than 125 ppm Less than 300 ppm Carbon Dioxide Less than 50 ppm 10 - 50 ppm 10 - 50 ppm

Ammonia Less than 2 ppm Less than 2 ppm Less than 20 ppm Ammonia Chloride Less than 0.5 ppm Less than 0.5 ppm Less than 0.5 ppm Ammonia Nitrate Less than 0.5 ppm Less than 0.5 ppm Less than 0.5 ppm Ammonia Hydroxide Less than 0.5 ppm Less than 0.5 ppm Less than 0.5 ppm Ammonia Sulfate Less than 0.5 ppm Less than 0.5 ppm Less than 0.5 ppm Total Dissolved Solids (TDS) Less than 1000 ppm 1000 - 1500 ppm 1000 - 1500 ppm

LSI Index +0.5 to -0.5 +0.5 to -0.5 +0.5 to -0.5

Iron Fouling (Biological Growth)

Iron, FE2_{+ (Ferrous)}

Bacterial Iron Potential < 0.2 ppm < 0.2 ppm < 0.2 ppm Iron Oxide Less than 1 ppm, above this

level deposition will occur

Less than 1 ppm, above this level deposition will occur

Less than 1 ppm, above this level deposition will occur

Erosion

Suspended Solids Less than 10 ppm and filtered for max. of 600 micron size

Less than 10 ppm and filtered for max. of 600 micron size

Less than 10 ppm and filtered for max. of 600 micron size Threshold Velocity

(Fresh Water) < 6 ft/sec < 6 ft/sec < 6 ft/sec

Water Quality

The following table outlines the water quality guidelines for unit heat exchangers. If these conditions are exceeded, a secondary heat exchanger is required. Failure to supply a secondary heat exchanger where needed will result in a warranty exclusion for primary heat exchanger corrosion or failure.

Strainers

These units must have properly sized strainers upstream of both brazed plate heat exchangers to protect them against particles in the fluid. Failure to install proper stainers and perform regular service can result in serious damage to the unit, and cause degraded performance, reduced operating life and failed compressors. Improper installation of the unit (which includes not having proper strainers to protect the heat exchangers) can also result in voiding the warranty. Field supplied strainers with 20-40 mesh (530-1060 microns) are recommended, with 30 mesh (800 microns) being the optimum choice. The strainers selected should have a mesh open area of at least 6 square inches (39 square centimeters) for each unit being serviced by the strainer. Using strainers with a smaller amount of open area will result in the need for more frequent cleaning.

Strainers should be selected on the basis of acceptable pressure drop, and not on pipe diameter. The strainers selected should have a pressure drop at the nominal flow rate of the units low enough to be within the pumping capacity of the pump being used.

WARNING: Must have intermediate heat exchanger when used in pool applications.

Figure 1 - Control Box

Electrical Data

Model Supply Circuit Rated Voltage Voltage Min/Max Compressor* Load Pump FLA Source Pump FLA Total Unit FLA Min Circ Amp Max Fuse/ HACR

MCC RLA LRA LRA**

100 L1/L2 208-230/60/1 187/253 41.2 26.4 134.0 47.0 - - 26.4 33.0 50 L3/L4 208-230/60/1 187/253 41.2 26.4 134.0 47.0 4.2 4.2 34.8 41.4 60 Single 208-230/60/3 187/253 24.9 16.0 110.0 66.0 - - 32.0 36.0 50 Single 460/60/3 414/506 12.1 7.8 52.0 31.0 - - 15.6 17.6 25 Single 575/60/3 517/633 8.9 5.7 38.9 - - - 11.4 12.8 15 120 L1/L2 208-230/60/1 187/253 47.0 30.1 145.0 51.0 - - 30.1 37.6 60 L3/L4 208-230/60/1 187/253 47.0 30.1 145.0 51.0 4.2 4.2 38.5 46.0 70 Single 208-230/60/3 187/253 28.0 17.3 120.0 72.0 - - 34.6 38.9 50 Single 460/60/3 414/506 15.0 9.6 70.0 42.0 - - 19.2 21.6 30 Single 575/60/3 517/633 12.5 8.0 53.0 - - - 16.0 18.0 25 150 L1/L2 208-230/60/1 187/253 42.0 26.9 145.0 51.0 - - 26.9 33.6 60 L3/L4 208-230/60/1 187/253 42.0 26.9 145.0 51.0 4.2 4.2 35.3 42.0 60 Single 208-230/60/3 187/253 35.0 22.4 190.0 114.0 - - 44.8 50.4 70 Single 460/60/3 414/506 19.0 12.2 87.0 52.0 - - 24.4 27.5 30 Single 575/60/3 517/633 15.0 9.6 62.0 - - - 19.2 21.6 30 180 L1/L2 208-230/60/1 187/253 50.0 32.1 185.0 65.0 - - 32.1 40.1 70 L3/L4 208-230/60/1 187/253 50.0 32.1 185.0 65.0 4.2 4.2 40.5 48.5 80 Single 208-230/60/3 187/253 39.0 26.0 190.0 114.0 - - 52.0 58.5 80 Single 460/60/3 414/506 19.0 13.0 100.0 60.0 - - 26.0 29.3 40 Single 575/60/3 517/633 14.5 9.3 72.0 - - - 18.6 20.9 30 3/7/13 HACR circuit breaker in USA only

* Ratings per each compressor - unit supplied with two ** With optional IntelliStart

Optional IntelliStart

208-230/60/1 units only reduces starting current

by 60% Aurora Controls

Aurora 'Base' Control and Aurora 'Advanced' Control

(shown) Run Capacitor

(Single Phase Only)

Field Low Voltage Connections 75VAC Transformer Compressor Contactor (CC-A) Pump Contactor (CC-P) Compressor Contactor (CC-B) ( gg F F F F F F F

Wiring Schematics

208-230

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24V Transformer 24V Transformer Re d 208V NO TE 1 Gr ou nd Le gend Le gend C C – C om pr es sor C ont ac to r CɌ – C ur re nt T ran sd uc er EL T – En te rin g L oa d T em p ES – E m er ge nc y Shut dow n ES T – E nte rin g S ou rc e Te m p HP – Hi gh P re ss ur e LF S – Lo ad Fl ow S w itc h LL T – Le av in g Load T em p LP – Lo w P res su re LS T – Le av in g So ur ce T em p L-W C T – Lo ad W ate r C oi l T em p PB – Po w er B lo ck RV – Re ve rs in g V al ve SF S – S our ce F low S wi tc h S-W C T – So ur ce W ate r C oi l T em p TB – T er m in al B oar d Fa ct or y l ow v ol ta ge w iri ng Fa ct or y l in e vo lta ge w iri ng Fi el d l ow v ol tag e w iri ng Fi el d l ine v ol tage w iri ng O pt ion al bl oc k Fi el d S upp lied O pt ion Th er m is to r Re la y c oi l T ¼ ” Q ui ck C onn ec to r Co m pr es so r A C _R S C _R S Un it Pow er Supply #1 208 -2 30/ 60/ 1 G L1L1 L2L2 Un it Pow er Supply #1 208 -2 30/ 60/ 1 G L1 L2 CC A L1 L2 T1 T2 CC A L1 L2 T1 T2 Blac k Blue Ta n (2 5A ) 10 A W G Re d CC P L1 L2 T1 T2 CC P L1 L2 T1 T2 G Load Pump G Ex t e rn al Sour ce Pu mp NO TE 6 No te s No te s 1 – Sw ap R ed an d B lu e T ran sf or m er w ire s fo r 20 8V op er at io n. 2 – C las s 2 T ran sf or m er s 3 – Un it Re qu ire s D ua l F ee d P ow er 4 – AB C A cc o ut pu t i s cyc le d w ith th e l ea d co m pr esso r. 5 – Th e r ev er si ng v al ve w ill be en er gi ze d f or c ool in g m ode . 6 – Ex te rnal load an d s ou rc e pum ps m us t be ex te rn al ly fu se d. No te s 1 – Sw ap R ed an d B lu e T ran sf or m er w ire s fo r 20 8V op er at io n. 2 – C las s 2 T ran sf or m er s 3 – Un it Re qu ire s D ua l F ee d P ow er 4 – AB C A cc o ut pu t i s cyc le d w ith th e l ea d co m pr esso r. 5 – Th e r ev er si ng v al ve w ill be en er gi ze d f or c ool in g m ode . 6 – Ex te rnal load an d s ou rc e pum ps m us t be ex te rn al ly fu se d. 24V Transformer 24V Transformer Re d 208V NO TE 1 PB 1 11 22 33 PB 1 1 2 3 Ca p A Co m pr es so r B C _R S C _R S Un it Pow er Supply #2 208 -2 30/ 60/ 1 G L1L1 L2L2 Un it Pow er Supply #2 208 -2 30/ 60/ 1 G L1 L2 CC B L1 L2 T1 T2 CC B L1 L2 T1 T2 Blac k Blue Ta n ( 25B ) 10 A W G Re d Ca p B CF M P13 P4 SW 1 P5 JW2 P9 LO O/B Y2 W DH P8 P7 RS 48 5 NE T RS 48 5 NE T P6 RS 485 E XP P3 SW 2 On Reheat /N or m al L O utp ut T ype CC – Du al/ Si ng le Ac c – D ip 5 Ac c – D ip 4 RV – B/ O FP 2 – 1 5°F /3 0 °F FP 1 – 1 5°F /3 0 °F Co m 1 LE D5 Co m 2 LE D5 Te st M od e F1 - 3 A P1 /P 9 C PW M 1 2 3 4 5 6 7 8 AL M AL G AC C C OM AC C N O AC C N C R C G Y1 EH 2 C EH 1 C CO C R -+ C R-+ Of f Fa ul t LE D1 R St at us LE D3 Co nf ig LE D2 CC2 CC F C R F FG CC CCG CC2 HI CC2 LO CC2 G RE VR EV FP 1 FP1 FP 2 FP2 LP S LPS HP SH PS Auro ra Ba se C ont ro l A (ABC -A ) K1-RV Relay K2-CC Relay K3-CC2 Relay K4-Fan Relay K5 -A lar m Re lay K6-A cc Re lay F R C CC G Y1 C R ES LS P2 EH 1 YY GG GG GGG W hi te ( 16) 12 A W G Blac k (1 7) 1 2 A W G Bl ue Bl ac k CF M P13 P4 SW 1 P5 JW2 P9 LO O/B Y2 W DH P8 P7 RS 48 5 NE T RS 48 5 NE T P6 RS 485 E XP P3 SW 2 On Re heat /N or m al L O utp ut T ype CC – Du al/ Si ng le Ac c – D ip 5 Ac c – D ip 4 RV – B/ O FP 2 – 15 °F /3 0 °F FP 1 – 15 °F /3 0 °F Co m 1 LE D5 Co m 2 LE D5 Te st M od e F1- 3A P1 /P 9 C PW M 1 2 3 4 5 6 78 AL M AL G AC C C OM AC C N O AC C N C R C G Y1 EH 2 C EH 1 C CO C R -+ C R-+ Of f Fa ul t LE D1R St at us LE D3 Co nf ig LE D2 CC2 CC F C R F FG CC CCG CC2 HI CC2 LO CC2 G RE VR EV FP 1 FP1 FP 2 FP2 LP S LPS HP SH PS Auro ra Ba se C ont ro l A (ABC -B ) K1-RV Relay K2-CC Relay K3-CC2 Relay K4-Fan Relay K5 -A lar m Re lay K6-A cc Re lay F R C CC G Y1 C R ES LS P2 EH 1 YY GG GG GGG Ye llo w Bl ac k/ W hi te Bl ac k ( 4) Re d ( 3) Blac k (2 ) Red ( 1) TB ES Em er g S h ut d ow n LS Lo ad S he d LO 1 Lo ck ou t C irc ui t A R 24V AC C 24V AC C om m on O Re ve rs in g V al ve G Fa n Y1 Co m pr es so r A W El ec tr ic H ea t DH De hu m id iĮ ca Ɵ on LO 2 Lo ck ou t C irc ui t B Y2 Co m pr es so r B TB ES Em er g S h ut d ow n LS Lo ad S he d LO 1 Lo ck ou t C irc ui t A R 24V AC C 24V AC C om m on O Re ve rs in g V al ve G Fa n Y1 Co m pr es so r A W El ec tr ic H ea t DH De hu m id iĮ ca Ɵ on LO 2 Lo ck ou t C irc ui t B Y2 Co m pr es so r B Clas s 2 Bl a ck ( E S1 ) _{) ES2 ck ( Bla} Bl a ck ( L S 1) Bla ck ( LS 2 ) Bl a ck ( L O 1 ) RVA RVA HP A LP A TT FD 1-A RV A TT FD 2-A RVB RVB HP B LP B TT RV B TT To A X B -A To A X B -B Bla ck ( LO 2) Bl a ck ( R ) Bl a ck ( C ) Bl a ck ( O 1) Bla ck ( O2) Bl a ck ( Y 1 ) Blac k (Y 2) Ora nge (60) CCA CCA Vio let (18) Viol et ( 19) CCBCCB Vi/W h (2 0) Vi/W h (2 1) Oran ge ( 61) Gr /Y l ( 5) GN D Wh Yel low (62) Yello w (6 3) (64 Gray ) Gray (65 ) Blue (66) Blue (67) Blac k (6 8) Blac k (6 9) Ora nge /Whi te (7 0) Ora nge /Whi te (7 1) Yel low /Whi te (7 2) Yel low /W hite (73 ) Gray /W hite (74) Gray /W hite (75) Blu e/W hite (76) Blu e/W hite (77) Blac k/W hite ( 78) Bla ck/ Whi te ( 79) C apac itor CT A Co m pr es so r Co m m on CT A C apac itor CT B Co m pr es so r Co m m on CT B So ur ce Pu m p CT Lo ad Pu m p CT FD 1-B FD 2-B NO TE 2 N ote 4 N ote 4 NO TE 5 NO TE 5

Wiring Schematics cont.

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one c

ontinued

HW P8 MO TO R P6 RS 48 5 P7 ZO N E P9 AB C ST EP PER AN A AC C 2 DH DI V NO CO M K6 NO CO M K5 C R L1 L1 L2 L2 P1 0 P5 P1 1 C R (-) (+ ) (+) (-) R C (+) (-) R C P4 P2 K1 K2 K3 HA 2 HA 1 SG I LO O P VS D AT A VS P U M P PU M P SL AV E P3 V+ C R TX RX +5 P1 4 LLT P1 LA T FL O W LW T EW T CT 2 4 3 CT 2 4 3 CT 1 2 1 CT 1 2 1 Status G DI S C H P1 6 P1 7 P1 8 P1 5 (Auro ra E xpan sion Boa rd) AX B-A SW1 Modbus Add. ID Future Use 1 2 3 4 5 ON OFF Future Use Acc 2 – Dip 1 Acc 2 – Dip 2 S+ 5 C C C 21 IN OU T +5 S SC T ₂1 3 HW 1 2 C P1 2 SC P 2 1 3 HW P8 MO TO R P6 RS 48 5 P7 ZO N E P9 AB C ST EP PER AN A AC C 2 DH DI V NO CO M K6 NO CO M K5 C R L1 L1 L2 L2 P1 0 P5 P1 1 C R (-) (+ ) (+) (-) R C (+) (-) R C P4 P2 K1 K2 K3 HA 2 HA 1 SG I LO O P VS D AT A VS P U M P PU M P SL AV E P3 V+ C R TX RX +5 P1 4 LLT P1 LA T FL O W LW T EW T CT 2 4 3 CT 2 4 3 CT 1 2 1 CT 1 2 1 Status G DI S C H P1 6 P1 7 P1 8 P1 5 (Auro ra E xpan sion Boa rd) AX B-A SW1 Modbus Add. ID Future Use 1 2 3 4 5 ON OFF Future Use Acc 2 – Dip 1 Acc 2 – Dip 2 S+ 5 C C C 21 IN OU T +5 S SC T ₂1 3 HW 1 2 C P1 2 SC P 2 1 3 HW P8 MO TO R P6 R S 485 P7 ZO N E P9 AB C ST EP PER AN A AC C 2 DH DI V NO CO M K6 NO CO M K5 C R L1 L1 L2 L2 P1 0 P5 P1 1 C R (-) (+ ) (+) (-) R C (+) (-) R C P4 P2 K1 K2 K3 HA 2 HA 1 SG I LO O P VS D AT A VS P U M P PU M P SL AV E P3 V+ C R TX RX +5 P1 4 LLT P1 LA T FL O W LW T EW T CT 2 4 3 CT 2 4 3 CT 1 2 1 CT 1 2 1 Status G DI S C H P1 6 P1 7 P1 8 P1 5 (Auro ra E xpan sion Boa rd) AX B-B SW1 Modbus Add. ID Future Use 1 2 3 4 5 ON OFF Future Use Acc 2 – Dip 1 Acc 2 – Dip 2 S+ 5 C C C 21 IN OU T +5 S SC T ₂1 3 HW 1 2 C P1 2 SC P 2 1 3 HW P8 MO TO R P6 R S 485 P7 ZO N E P9 AB C ST EP PER AN A AC C 2 DH DI V NO CO M K6 NO CO M K5 C R L1 L1 L2 L2 P1 0 P5 P1 1 C R (-) (+ ) (+) (-) R C (+) (-) R C P4 P2 K1 K2 K3 HA 2 HA 1 SG I LO O P VS D AT A VS P U M P PU M P SL AV E P3 V+ C R TX RX +5 P1 4 LLT P1 LA T FL O W LW T EW T CT 2 4 3 CT 2 4 3 CT 1 2 1 CT 1 2 1 Status G DI S C H P1 6 P1 7 P1 8 P1 5 (Auro ra E xpan sion Boa rd) AX B-B SW1 Modbus Add. ID Future Use 1 2 3 4 5 ON OFF Future Use Acc 2 – Dip 1 Acc 2 – Dip 2 S+ 5 C C C 21 IN OU T +5 S SC T ₂1 3 HW 1 2 C P1 2 SC P 2 1 3 CCPCCP Black (22 ) W hit e (23 ) Wh ite (2 4) TT Whi te ( 81) Whi te ( 80) TT 2) le (8 Purp Purp le (8 3) TT White /Ta n (8 5) White /Ta n (8 4)

TT 6) te (8 /Whi ple Pur Pur ple /W hite (87) TT 8) n (8 Brow Bro wn ( 89) TT 90) hite ( n/W Brow Brow n/W hite ( 91) To AB C -B P6 To A BC -A P 6 Pu m p Co nt ac to r Re d Re d Red ( 104) Whit e (103) Blac k (102) Di sc h Pr es su re B Re d Re d Red ( 98) White (97 ) Blac k (9 6) Di sc h Pr es su re A Re d Re d Red ( 99) Whit e (100) Blac k (101) Su ct Pr es su re A Re d Re d Red ( 105) Whit e (106) Blac k (107) Su ct Pr es su re B T T Blue (93) Blue (92) SC T A T T Blue /W h (9 5) Blue /W h (94) SC T B Blue (26 ) Blue (27 ) Red ( 28) Red ( 29) Blac k Blac k Br ow n Br ow n Blue /Whi te (3 0) Blue/ Whi te ( 31) Red/ Whit e (3 2) Red/ Whit e (3 3) C apac itor CT A Co m pr es so r Co m m on CT A Au x He at C t Lo ad P um p CT Blac k Blac k Br ow n Br ow n Sour ce P um p CT Au x 2 CT Ca pa cit or CT B Co m pr es so r Co m m on CT B Bl ue /W hi te (4 5) Pi nk /W hi te (4 6) Ye llo w/W hi te (4 7) Pu rp le /W hi te (4 8) Bl ue (4 9) Pi nk (5 0) Ye llo w ( 51 ) Pu rp le (5 2) Lo ad F low S w itc h Fi le d I ns tal le d So ur ce F lo w S wi tch Fi le d I ns tal le d ES T LS T EL T LLT LLT - A LLT - B H ydr oZ on e C on tro lle r Wi ring OAT S ens or GeoT ank Sen sor OAT OAT Tank Tank Red ( GND) Red ( TS) H ydr oZ on e HZ 0 Co nt ro lle r GN D TS OA T GN D -+ HZ C H ydr oZ on e HZ 0 Co nt ro lle r GN D TS OA T GN D -+ HZ C R C O/ B P V C1 C2 C3 C4 C3 C2 C1 V P O/B C R --C4 --TB ES Em er g S h ut d ow n LS Lo ad S he d LO 1 Lo ck ou t C irc ui t A R 24 V AC C 24V AC C om m on O Re ve rs in g V al ve G Fa n Y1 Co m pr es so r A W El ec tr ic H ea t DH Deh um id iĮ ca Ɵ on LO 2 Lo ck ou t C irc ui t B Y2 Co m pr esso r B Cl a ss 2 TB ES Em er g S h ut d ow n LS Lo ad S he d LO 1 Lo ck ou t C irc ui t A R 24 V AC C 24V AC C om m on O Re ve rs in g V al ve G Fa n Y1 Co m pr es so r A W El ec tr ic H ea t DH Deh um id iĮ ca Ɵ on LO 2 Lo ck ou t C irc ui t B Y2 Co m pr esso r B Cl a ss 2 H ydr oZ on e C on tro lle r Wi ring OAT S ens or GeoT ank Sen sor OAT OAT Tank Tank Red ( GND) Red ( TS) H ydr oZ on e HZ 0 Co nt ro lle r GN D TS OA T GN D -+ HZ C R C O/ B P V C1 C2 C3 C4 --TB ES Em er g S h ut d ow n LS Lo ad S he d LO 1 Lo ck ou t C irc ui t A R 24 V AC C 24V AC C om m on O Re ve rs in g V al ve G Fa n Y1 Co m pr es so r A W El ec tr ic H ea t DH Deh um id iĮ ca Ɵ on LO 2 Lo ck ou t C irc ui t B Y2 Co m pr esso r B Cl a ss 2 Legen d Legen d Fa ct or y L o w V ol ta ge W ir in g Fi el d L ow V ol ta ge W ir in g 1234567812345678 RJ 45 C on n ec to r Legen d Fa ct or y L o w V ol ta ge W ir in g Fi el d L ow V ol ta ge W ir in g 12345678 RJ 45 C on n ec to r DE S CRI P TI O N S W 2-4 S W 2-5 N ot U sed ON ON C ycl e w ith C om pr esso r O FF OF F W at er Va lv e Sl ow O pe ni n ON OF F N ot U sed OF F O N A X B S W 2 A ccesso ry R el ay Mo db us A dd . ID Fu tu re U se Fu tu re U se Ac c 2 – D ip 1 Ac c 2 – D ip 2 Mo db us A dd . ID Fu tu re U se Fu tu re U se Ac c 2 – D ip 1 Ac c 2 – D ip 2 SW 1 1 2 3 4 5 SW 1 1 2 3 4 5 SW 1 1 2 3 4 5 ON OF F O N OF F SW 1 1 2 3 4 5 ON OF F Mo db us A dd . ID Fu tu re U se Fu tu re U se Ac c 2 – D ip 1 Ac c 2 – D ip 2 SW 1 1 2 3 4 5 ON OF F 3 – Ac c2 o ut pu t i s cy cle d w ith th e l ea d co m pr esso r No te s No te s 1 – If no fl ow s w itc h i s b ei ng u se d o n th e l oa d s id e, w ire s c on ne cte d to H A-1 nee d t o be ju m pe red. C on nec t P ur pl e and Y el low w ire to ge th er . 2 – If no fl ow s w itc h i s b ei ng u se d o n th e s ou rc e s id e, w ire s c on ne cte d to H A-2 ne ed to b e j um pe re d. C on ne ct P in k a nd B lu e w ire to ge th er . No te s 1 – If no fl ow s w itc h i s b ei ng u se d o n th e l oa d s id e, w ire s c on ne cte d to H A-1 nee d t o be ju m pe red. C on nec t P ur pl e and Y el low w ire to ge th er . 2 – If no fl ow s w itc h i s b ei ng u se d o n th e s ou rc e s id e, w ire s c on ne cte d to H A-2 ne ed to b e j um pe re d. C on ne ct P in k a nd B lu e w ire to ge th er . No te 3 No te 3 N ote 1 No te 2 Red/ Whit e (3 3) Blac k Blac k Br ow n Br ow n

Wiring Schematics cont.

208-230

/

6

0

/

1 with Soft Start Option and Hy

dr

oZ

one

24V Transformer 24V Transformer Re d 208V NO TE 1 G roun d Le gend Le gend C C – C om pr es sor C ont ac to r CɌ – C ur re nt T ran sduc er EL T – E nt er ing Loa d Te m p ES – E m er ge nc y Sh ut do w n ES T – E nte rin g S ou rc e Te m p HP – Hi gh P re ss ur e LF S – Lo ad Fl ow S w itc h LL T – Le av in g Lo ad T em p LP – Lo w P res su re LS T – Le av in g So ur ce T em p L-W C T – Lo ad W at er C oi l T em p PB – Po w er B lo ck R V – R ev er si ng V al ve SF S – S our ce F low S wi tc h S-W C T – Sour ce W at er C oi l T em p TB – Te rm in al B oa rd Fa ct or y l ow v ol tag e w iri ng Fa ct or y l in e vo lta ge w iri ng Fi el d l ow v ol tag e w iri ng Fi el d li ne v olt ag e w iri ng O pt ion al bl oc k Fi el d S upp lied O pt ion Th er m is to r Re la y c oi l T ¼” Q ui ck C on ne ct or Co m pr es so r A C _R S C _R S So ft St ar t Run W ind ing Ac tiv e Star t W ind ing Com mon W indi ng So ft St ar t Run W ind ing Ac tiv e Star t W ind ing Com mon W indi ng Unit Pow er Supply #1 208 -2 30/ 60/ 1 G L1L1 L2L2 Unit Pow er Supply #1 208 -2 30/ 60/ 1 G L1 L2 Blac k Pink CC A L1 L2 T1 T2 CC A L1 L2 T1 T2 Blac k Blue Ta n ( 25A ) 10 A W G Blue Re d CC P L1 L2 T1 T2 CC P L1 L2 T1 T2 G Load Pump G Ex t er nal Sour ce Pu mp NO TE 6 No te s No te s 1 – Sw ap R ed an d B lu e T ran sf or m er w ire s fo r 20 8V op er at io n. 2 – C las s 2 T ran sf or m er s 3 – U ni t R equ ire s D ual F ee d P ow er 4 – AB C A cc o ut pu t i s cyc le d w ith th e l ea d co m pr esso r. 5 – Th e r ev er si ng v al ve w ill be en er gi ze d f or c ool in g m ode . 6 – Ex te rnal load an d s ou rc e pum ps m us t be ex te rn al ly fu se d. No te s 1 – Sw ap R ed an d B lu e T ran sf or m er w ire s fo r 20 8V op er at io n. 2 – C las s 2 T ran sf or m er s 3 – U ni t R equ ire s D ual F ee d P ow er 4 – AB C A cc o ut pu t i s cyc le d w ith th e l ea d co m pr esso r. 5 – Th e r ev er si ng v al ve w ill be en er gi ze d f or c ool in g m ode . 6 – Ex te rnal load an d s ou rc e pum ps m us t be ex te rn al ly fu se d. 24V Transformer 24V Transformer Re d 208V NO TE 1 PB 1 11 22 33 PB 1 1 2 3 Ca p A Co m pr es so r B C _R S C _R S So ft St ar t Run W ind ing Ac tiv e Star t W ind ing Com mon W indi ng So ft St ar t Run W ind ing Ac tiv e Star t W ind ing Com mon W indi ng Unit Pow er Supply #2 208 -230/ 60/ 1 G L1L1 L2L2 Unit Pow er Supply #2 208 -230/ 60/ 1 G L1 L2 Pink CC B L1 L2 T1 T2 CC B L1 L2 T1 T2 Blac k Blue Ta n (2 5B ) 10 A W G Blue Re d Ca p B CF M P13 P4 SW 1 P5 JW2 P9 LO O/B Y2 W DH P8 P7 RS 48 5 NE T RS 48 5 NE T P6 RS 48 5 EXP P3 SW 2 On Reheat /N or m al L O utp ut T ype CC – Du al/ Si ng le Ac c – D ip 5 Ac c – D ip 4 RV – B/ O FP 2 – 15 °F /3 0 °F FP 1 – 1 5°F /3 0 °F Co m 1 LE D5 Co m 2 LE D5 Te st M od e F1 - 3 A P1 /P 9 C PW M 1 2 3 4 5 6 7 8 AL M AL G AC C C OM AC C N O AC C N C R C G Y1 EH 2 C EH 1 C CO C R -+ C R-+ Of f Fa ul t LE D1 R St at us LE D3 Co nf ig LE D2 CC2 CC F C RF FG CC CC G CC2 HI CC2 LO CC2 G RE VR EV FP 1 FP1 FP 2 FP2 LP S LPS HP SH PS Auro ra Ba se C ont rol A (ABC -A ) K1-RV Relay K2-CC Relay K3-CC2 Relay K4-Fan Relay K5 -A lar m Re lay K6-A cc Re lay F R C CC G Y1 C R ES LS P2 EH 1 YY GG GG GGG N ote 4 W hi te ( 16) 12 A W G Blac k (1 7) 1 2 A W G Bl ue Bl ac k CF M P13 P4 SW 1 P5 JW2 P9 LO O/B Y2 W DH P8 P7 RS 48 5 NE T RS 48 5 NE T P6 RS 48 5 EXP P3 SW 2 On Reheat /N or m al L O utp ut T ype CC – Du al/ Si ng le Ac c – D ip 5 Ac c – D ip 4 RV – B/ O FP 2 – 15 °F /3 0 °F FP 1 – 1 5°F /3 0 °F Co m 1 LE D5 Co m 2 LE D5 Te st M od e F1- 3A P1 /P 9 C PW M 1 2 3 4 5 6 78 AL M AL G AC C C OM AC C N O AC C N C R C G Y1 EH 2 C EH 1 C CO C R -+ C R-+ Of f Fa ul t LE D1 R St at us LE D3 Co nf ig LE D2 CC2 CC F C RF FG CC CC G CC2 HI CC2 LO CC2 G RE VR EV FP 1 FP1 FP 2 FP2 LP S LPS HP SH PS Auro ra Ba se C ont rol A (ABC -B ) K1-RV Relay K2-CC Relay K3-CC2 Relay K4-Fan Relay K5 -A lar m Re lay K6-A cc Re lay F R C CC G Y1 C R ES LS P2 EH 1 YY GG GG GGG Ye llo w Bl ac k/ W hi te Bl ac k ( 4) Re d ( 3) Blac k (2 ) Red ( 1) TB ES Em er g S h ut d ow n LS Lo ad S he d LO 1 Lo ck ou t C irc ui t A R 24V AC C 24V AC C om m on O Re ve rs in g V al ve G Fa n Y1 Co m pr es so r A W El ec tr ic H ea t DH De hu m id iĮ ca Ɵ on LO 2 Lo ck ou t C irc ui t B Y2 Co m pr es so r B TB ES Em er g S h ut d ow n LS Lo ad S he d LO 1 Lo ck ou t C irc ui t A R 24V AC C 24V AC C om m on O Re ve rs in g V al ve G Fa n Y1 Co m pr es so r A W El ec tr ic H ea t DH De hu m id iĮ ca Ɵ on LO 2 Lo ck ou t C irc ui t B Y2 Co m pr es so r B Class 2 Bl a ck ( E S1 ) Bla ck ( ES2 ) Bl a ck ( L S 1) Bla ck ( LS 2 ) Bl a ck ( L O 1 ) RVA RVA HP A LP A TT FD 1-A RV A TT FD 2-A RVB RVB HP B LP B TT RV B TT To A X B -A To A X B -B Bla ck ( LO 2) Bl a ck ( R ) Bl a ck ( C ) Bl a ck ( O 1) Bla ck ( O2) B lac k ( Y 1) Blac k (Y 2) Orang e (60 ) CCA CCA Vio let (18) Vio let (19) CCBCCB Vi/W h (2 0) Vi/W h (2 1) Orang e (61) Gr /Y l ( 5) GN D Wh Yel low (62) Yello w (6 3) Gray (64) Gray (65) Blue (66) Blue (67 )8) k (6 Blac Blac k (6 9) Orang e/W hite (70) Orang e/W hite (71) Yel low /Whi te (7 2) Yel low /Whi te (7 3) (74 hite y/W Gra

) Gra y/W hite (75 ) Blu e/W hite (76 ) Blu e/W hite (77 ) Blac k/W hite ( 78) Blac k/W hite (79 ) Ca pa cit or CT A Co m pr es so r Co m m on CT A Ca pa cit or CT B Co m pr es so r Co m m on CT B Sour ce Pu m p CT Lo ad Pu m p CT FD 1-B FD 2-B NO TE 2 No te 4 NO TE 5 NO TE 5

/

6

0

/

1 Supply Po

w

er with Hy

dr

oZ

one c

ontinued

Wiring Schematics cont.

HW P8 MO TO R P6 RS 48 5 P7 ZO N E P9 AB C ST EP PER AN A AC C 2 DH DI V NO CO M K6 NO CO M K5 C R L1 L1 L2 L2 P1 0 P5 P1 1 C R (-) (+ ) (+) (-) R C (+) (-) R C P4 P2 K1 K2 K3 HA 2 HA 1 SG I LO O P VS D AT A VS P U M P PU M P SL AV E P3 V+ C R TX RX +5 P1 4 LLT P1 LA T FL O W LW T EW T CT 2 4 3 CT 2 4 3 CT 1 2 1 CT 1 2 1 Status G DI S C H P1 6 P1 7 P1 8 P1 5 (Auro ra E xpan sion Boa rd) AX B-A SW1 Modbus Add. ID Future Use 1 2 3 4 5 ON OFF Future Use Acc 2 – Dip 1 Acc 2 – Dip 2 S+ 5 C C C 21 IN OU T +5 S SC T ₂ 1 3 HW 1 2 C P1 2 SC P ₂1 3 HW P8 MO TO R P6 RS 48 5 P7 ZO N E P9 AB C ST EP PER AN A AC C 2 DH DI V NO CO M K6 NO CO M K5 C R L1 L1 L2 L2 P1 0 P5 P1 1 C R (-) (+ ) (+) (-) R C (+) (-) R C P4 P2 K1 K2 K3 HA 2 HA 1 SG I LO O P VS D AT A VS P U M P PU M P SL AV E P3 V+ C R TX RX +5 P1 4 LLT P1 LA T FL O W LW T EW T CT 2 4 3 CT 2 4 3 CT 1 2 1 CT 1 2 1 Status G DI S C H P1 6 P1 7 P1 8 P1 5 (Auro ra E xpan sion Boa rd) AX B-A SW1 Modbus Add. ID Future Use 1 2 3 4 5 ON OFF Future Use Acc 2 – Dip 1 Acc 2 – Dip 2 S+ 5 C C C 21 IN OU T +5 S SC T ₂ 1 3 HW 1 2 C P1 2 SC P ₂1 3 HW P8 MO TO R P6 RS 48 5 P7 ZO N E P9 AB C ST EP PER AN A A CC2 DH DI V NO CO M K6 NO CO M K5 C R L1 L1 L2 L2 P1 0 P5 P1 1 C R (-) (+ ) _{(-) R C} (+ ) (+) (-) R C P4 P2 K1 K2 K3 HA 2 HA 1 SG I LO O P VS D AT A VS P U M P PU M P SL AV E P3 V+ C R TX RX +5 P1 4 LLT P1 LA T FL O W LW T EW T CT 2 4 3 CT 2 4 3 CT 1 2 1 CT 1 2 1 Status G DI S C H P1 6 P1 7 P1 8 P1 5 (Auro ra E xpan sion Boa rd) AX B-B SW1 Modbus Add. ID Future Use 1 2 3 4 5 ON OFF Future Use Acc 2 – Dip 1 Acc 2 – Dip 2 S+ 5 C C C 21 IN OU T +5 S SC T ₂1 3 HW 1 2 C P1 2 SC P ₂1 3 HW P8 MO TO R P6 RS 48 5 P7 ZO N E P9 AB C ST EP PER AN A A CC2 DH DI V NO CO M K6 NO CO M K5 C R L1 L1 L2 L2 P1 0 P5 P1 1 C R (-) (+ ) _{(-) R C} (+ ) (+) (-) R C P4 P2 K1 K2 K3 HA 2 HA 1 SG I LO O P VS D AT A VS P U M P PU M P SL AV E P3 V+ C R TX RX +5 P1 4 LLT P1 LA T FL O W LW T EW T CT 2 4 3 CT 2 4 3 CT 1 2 1 CT 1 2 1 Status G DI S C H P1 6 P1 7 P1 8 P1 5 (Auro ra E xpan sion Boa rd) AX B-B SW1 Modbus Add. ID Future Use 1 2 3 4 5 ON OFF Future Use Acc 2 – Dip 1 Acc 2 – Dip 2 S+ 5 C C C 21 IN OU T +5 S SC T ₂1 3 HW 1 2 C P1 2 SC P ₂1 3 CCPCCP Bla ck (22 ) W hit e (23 ) Wh ite (2 4) TT White (81) White (80) TT 82) le ( Purp Purp le ( 83) TT Whi te/ Tan ( 85) Whi te/ Tan ( 84)

TT 86) te ( Whi le/ Purp Pur ple /Whi te (8 7) TT 8) n (8 Brow Bro wn ( 89) TT 90) hite ( n/W Brow Brow n/W hite ( 91) To AB C -B P6 To AB C -A P6 Pu m p C ont ac to r Re d Re d Red ( 104 ) Whit e (103) Blac k (102) Di sc h Pr es su re B Re d Re d Red ( 98) Whit e (97) Blac k (9 6) Di sc h Pr es su re A Re d Re d Red ( 99) Whit e (100) Blac k (1 01) Su ct Pr es su re A Re d Re d Red ( 105) Whit e (106) Blac k (107) Su ct Pr es su re B T T Blue (93) Blue (92 ) SC T A T T Blue /W h (9 5) Blue /W h (9 4) SC T B Blue (26 ) Blue (27 ) Red ( 28) Red ( 29) Blac k Blac k Br ow n Br ow n Blue /Whi te (3 0) Blue /Whi te (3 1) Red/ Whit e (3 2) Red/ Whit e (3 3) Ca pa cit or CT A Co m pr es so r C om m on C T A Au x He at C t Lo ad P um p CT Blac k Blac k Br ow n Br ow n Sour ce P um p CT Au x 2 _CT C apac itor CT B Co m pr es so r Co m m on CT B Bl ue /W hi te (4 5) Pi nk /W hi te (4 6) Ye llo w/W hi te (4 7) Pu rp le /W hi te (4 8) Bl ue (4 9) Pi nk (5 0) Ye llow (51) Pu rp le (5 2) Lo ad F low S w itc h Fi le d I ns ta lle d Sour ce F low S wi tc h Fi le d I ns tal le d ES T LS T EL T LLT LLT - A LLT - B H ydr oZ on e C on tro lle r Wi ring OAT S ens or GeoT ank Sen sor OAT OAT Tank Tank Red ( GND) Red ( TS) Hy dr oZ on e HZ 0 Co nt ro lle r GN D TS OA T GN D -+ HZ C Hy dr oZ on e HZ 0 Co nt ro lle r GN D TS OA T GN D -+ HZ C R C O/ B P V C1 C2 C3 C4 C3 C2 C1 V P O/B C R --C4 --TB ES Em er g S h ut d ow n LS Lo ad S he d LO 1 Lo ck ou t C irc ui t A R 24 V AC C 24V AC C om m on O Re ve rs in g V al ve G Fa n Y1 Co m pr es so r A W El ec tr ic H ea t DH Deh um id iĮ ca Ɵ on LO 2 Lo ck ou t C irc ui t B Y2 Co m pr es so r B Cl a ss 2 TB ES Em er g S h ut d ow n LS Lo ad S he d LO 1 Lo ck ou t C irc ui t A R 24 V AC C 24V AC C om m on O Re ve rs in g V al ve G Fa n Y1 Co m pr es so r A W El ec tr ic H ea t DH Deh um id iĮ ca Ɵ on LO 2 Lo ck ou t C irc ui t B Y2 Co m pr es so r B Cl a ss 2 H ydr oZ on e C on tro lle r Wi ring OAT S ens or GeoT ank Sen sor OAT OAT Tank Tank Red ( GND) Red ( TS) Hy dr oZ on e HZ 0 Co nt ro lle r GN D TS OA T GN D -+ HZ C R C O/ B P V C1 C2 C3 C4 --TB ES Em er g S h ut d ow n LS Lo ad S he d LO 1 Lo ck ou t C irc ui t A R 24 V AC C 24V AC C om m on O Re ve rs in g V al ve G Fa n Y1 Co m pr es so r A W El ec tr ic H ea t DH Deh um id iĮ ca Ɵ on LO 2 Lo ck ou t C irc ui t B Y2 Co m pr es so r B Cl a ss 2 Legen d Legen d Fa ct or y L o w V ol ta ge W ir in g Fi el d L ow V ol ta ge W ir in g 123 45678 123 45678 RJ 45 C on n ec to r Legen d Fa ct or y L o w V ol ta ge W ir in g Fi el d L ow V ol ta ge W ir in g 123 45678 RJ 45 C on n ec to r D ESC R IPT IO N S W 2-4 SW 2-5 No t Us ed O N O N C ycl e w ith C om pr esso r OF F O FF W ater V al ve S lo w Op en in ON OF F No t Us ed O FF O N A X B S W 2 A ccesso ry R el ay M odb us A dd. ID Fu tu re U se Fu tu re U se Ac c 2 – D ip 1 Ac c 2 – D ip 2 M odb us A dd. ID Fu tu re U se Fu tu re U se Ac c 2 – D ip 1 Ac c 2 – D ip 2 SW 1 1 2 3 4 5 SW 1 1 2 3 4 5 SW 1 1 2 3 4 5 ON OF F O N OF F SW 1 1 2 3 4 5 ON OF F M odb us A dd. ID Fu tu re U se Fu tu re U se Ac c 2 – D ip 1 Ac c 2 – D ip 2 SW 1 1 2 3 4 5 ON OF F 3 – Ac c2 out put is c yc led w ith th e le ad c om pr es sor No te s No te s 1 – If no fl ow s w itc h i s b ei ng u se d o n th e l oa d s id e, w ire s c on ne cte d to H A-1 ne ed to b e j um pe re d. C on ne ct P ur pl e an d Y el lo w w ire to ge th er . 2 – If no fl ow s w itc h i s b ei ng u se d o n th e s ou rc e s id e, w ire s c on ne cte d to H A-2 nee d t o be ju m pe red. C on nec t P ink an d B lu e w ire to ge th er . No te s 1 – If no fl ow s w itc h i s b ei ng u se d o n th e l oa d s id e, w ire s c on ne cte d to H A-1 ne ed to b e j um pe re d. C on ne ct P ur pl e an d Y el lo w w ire to ge th er . 2 – If no fl ow s w itc h i s b ei ng u se d o n th e s ou rc e s id e, w ire s c on ne cte d to H A-2 nee d t o be ju m pe red. C on nec t P ink an d B lu e w ire to ge th er . No te 3 No te 3 No te 1 N ote 2 Red/ Whit e (3 3) Blac k Blac k Br ow n Br ow n

3PH Supply Po

w

er with Hy

dr

oZ

one

Wiring Schematics cont.

24V Transformer 24V Transformer Re d 208V NO TE 1 24V Transformer 24V Transformer Re d 208V NO TE 1 PB 1 11 22 33 PB 1 1 2 3 CF M P13 P4 SW 1 P5 JW2 P9 LO O/B Y2 W DH P8 P7 RS 48 5 NE T RS 485 N ET P6 RS 485 E XP P3 SW 2 On Reheat /N or m al L O utput T ype CC – D ual /S ingl e Ac c – D ip 5 Ac c – D ip 4 RV – B/ O FP 2 – 1 5°F /3 0 °F FP 1 – 15 °F /3 0 °F Co m 1 LE D5 Co m 2 LE D5 Te st M ode F1 - 3 A P1 /P 9 C PW M 1 2 3 4 5 6 7 8 AL M AL G AC C C OM AC C N O AC C N C R C G Y1 EH 2 C EH 1 C CO C R -+ C R-+ Of f Fa ul t LE D1 R St at us LE D3 Co nf ig LE D2 CC2 CC F C R F FG CC CCG CC2 HI CC2 LO CC2 G RE VR EV FP 1 FP1 FP 2 FP2 LP S LPS HP SH PS Auro ra Ba se C ont rol A (ABC -A ) K1-RV Relay K2-CC Relay K3-CC2 Relay K4-Fan Relay K5 -A lar m Re lay K6-A cc Re lay F R C CC G Y1 C R ES LS P2 EH 1 YY GG GG GGG CF M P13 P4 SW 1 P5 JW2 P9 LO O/B Y2 W DH P8 P7 RS 48 5 NE T RS 485 N ET P6 RS 485 E XP P3 SW 2 On Reheat /N or m al L O utput T ype CC – D ual /S ingl e Ac c – D ip 5 Ac c – D ip 4 RV – B/ O FP 2 – 15 °F /3 0 °F FP 1 – 15 °F /3 0 °F Co m 1 LE D5 Co m 2 LE D5 Te st M od e F1- 3A P1 /P 9 C PW M 1 2 3 4 5 6 78 AL M AL G AC C C OM AC C N O AC C N C R C G Y1 EH 2 C EH 1 C CO C R -+ C R-+ Of f Faul t LE D1 R St at us LE D3 Co nf ig LE D2 CC2 CC F C R F FG CC CCG CC2 HI CC2 LO CC2 G RE VR EV FP 1 FP1 FP 2 FP2 LP S LPS HP SH PS Auro ra Ba se C ont rol A (ABC -B ) K1-RV Relay K2-CC Relay K3-CC2 Relay K4-Fan Relay K5 -A lar m Re lay K6-A cc Re lay F R C CC G Y1 C R ES LS P2 EH 1 YY GG GG GGG Ye llo w Bl ac k/ W hi te Bl ac k ( 4) Re d ( 3) Blac k (2 ) Red ( 1) TB ES Em er g S h ut d ow n LS Lo ad S he d LO 1 Lo ck ou t C irc ui t A R 24V AC C 24 V AC Co m m on O Re ve rs in g V al ve G Fa n Y1 Co m pr es so r A W El ec tr ic H ea t DH De hu m id iĮ ca Ɵ on LO 2 Lo ck ou t C irc ui t B Y2 Co m pr es so r B TB ES Em er g S h ut d ow n LS Lo ad S he d LO 1 Lo ck ou t C irc ui t A R 24V AC C 24 V AC Co m m on O Re ve rs in g V al ve G Fa n Y1 Co m pr es so r A W El ec tr ic H ea t DH De hu m id iĮ ca Ɵ on LO 2 Lo ck ou t C irc ui t B Y2 Co m pr es so r BClass 2 Bl a ck ( E S1 ) Bla ck ( ES2 ) Bl a ck ( L S 1) Bla ck ( LS 2 ) Bl a ck ( L O 1 ) RVA RVA HP A LP A TT FD 1-A RV A TT FD 2-A RVB RVB HP B LP B TT RV B TT To A X B -A To A X B -B Bla ck ( LO 2) Bl a ck ( R ) Bl a ck ( C ) Bl a ck ( O 1) Bla ck ( O2) B lac k ( Y 1) Bla ck ( Y2 ) Oran ge ( 60) CCA CCA Viol et ( 18) Viol et ( 19) CCBCCB Vi/W h (20) Vi/W h (21) Oran ge ( 61) Gr /Y l ( 5) GN D Wh Yello w (6 2) Yello w (6 3) Gray (64 ) Gray (65 ) Blue (66 ) Blue (67 ) Blac k (6 8) Blac k (6 9) Ora nge /Whi te (7 0) Ora nge /Whi te (7 1) Yel low /W hite (72 ) Yel low /W hite (73 ) Gray /W hite (74) Gray /W hite (75) Blu e/W hite (76 ) Blu e/W hite (77 ) Blac k/W hite ( 78) Blac k/W hite (79 ) FD 1-B FD 2-B Co m pr es so r A T1 _T2 T3 T1 _T2 T3 Blac k A1 Re d A 3 W hit e A2 Co m pr es so r B T1 _T2 T3 T1 _T2 T3 L3 L2 L1 T3 T2 T1 Po w er D ist ribu tio n B loc k Un it P owe r S up pl y Line Volt age G L3 L2 L1 T3 T2 T1 Po w er D ist ribu tio n B loc k Un it P owe r S up pl y Line Volt age G Re d Ye llo w Bl ac k CC A T1 L1 T2 L2 T3 L3 CC A T1 L1 T2 L2 T3 L3 Blac k B1 Re d B 3 W hit e B2 Re d Ye llo w Bl ac k CC B T1 L1 T2 L2 T3 L3 CC B T1 L1 T2 L2 T3 L3 Gr ou nd Le gend Le gend CC – Co m pr es so r C on ta ct or CɌ – C ur re nt Tr an sd uc er EL T – E nte rin g Lo ad T em p ES – Em er ge nc y Sh ut do w n ES T – En te rin g S ou rc e T em p HP – Hi gh P re ss ur e LF S – Lo ad Fl ow S w itc h LL T – Le av in g L oad T em p LP – Lo w P res su re LS T – Le av in g So ur ce T em p L-W C T – Lo ad W ate r C oi l T em p PB – Po w er B lo ck RV – Re ve rs in g V al ve SF S – So ur ce F lo w S wi tc h S-W C T – So ur ce W ate r C oi l T em p TB – Te rm in al B oa rd Fa ct or y l ow v ol ta ge w iri ng Fa ct or y l in e vo lta ge w iri ng Fi el d l ow v ol tag e w iri ng Fi el d l ine v ol tage w iri ng O pt ion al bl oc k Fi el d S upp lied O pt ion Th er m is to r R ela y c oil T ¼” Q ui ck C on ne ct or No te s No te s 1 – Sw ap R ed an d B lu e T ran sf or m er w ire s fo r 20 8V op er at io n. 20 8 -23 0/ 60 /1 uni ts on ly . 2 – C las s 2 T ran sf or m er 3 – Ac c ou tp ut is c yc led w ith th e l ea d co m pr es so r. 4 – Th e r ev er si ng v al ve w ill be en er gi ze d f or c ool in g m ode . No te s 1 – Sw ap R ed an d B lu e T ran sf or m er w ire s fo r 20 8V op er at io n. 20 8 -23 0/ 60 /1 uni ts on ly . 2 – C las s 2 T ran sf or m er 3 – Ac c ou tp ut is c yc led w ith th e l ea d co m pr es so r. 4 – Th e r ev er si ng v al ve w ill be en er gi ze d f or c ool in g m ode . No te 2 No te 3 No te 3 No te 4 No te 4 SW 1-4 SW 1-5 DE SCRI PT IO N O N O N No t Us ed O FF O N Cy cl es wi th CC ( No rm al ) ON OF F No t U se d OF F O FF No t U se d AX B A ccesso ry 2 D IP S etti ng s SW 2 On Fu tu re U se L O utput T ype CC – Du al/ Si ng le Ac c – D ip 5 Ac c – D ip 4 RV – B/ O FP 2 – 15° F/ 30° F FP 1 – 15° F/ 30° F 1 2 3 4 5 6 7 8 Of f SW2 On Fu tu re U se L O utput T ype CC – Du al/ Si ng le Ac c – D ip 5 Ac c – D ip 4 RV – B/ O FP 2 – 15° F/ 30° F FP 1 – 15° F/ 30° F 1 2 3 4 5 6 7 8 Of f SW2 On Fu tu re U se L O utput T ype CC – Du al/ Si ng le Ac c – D ip 5 Ac c – D ip 4 RV – B/ O FP 2 – 15° F/ 30° F FP 1 – 15° F/ 30° F 1 2 3 4 5 6 7 8 Of f

Wiring Schematics cont.

w

er with Hy

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one c

ontinued

HW P8 MO TO R P6 RS 48 5 P7 ZO NE P9 AB C ST EP PER AN A AC C2 DH DI V NO CO M K6 NO CO M K5 C R L1 L1 L2 L2 P1 0 P5 P1 1 C R (-) (+ ) _{(-) R C} (+ ) (+) (-) R C P4 P2 K1 K2 K3 HA 2 HA 1 SG I LO O P VS D AT A VS P UM P PU MP SL AV E P3 V+ C R TX RX +5 P1 4 LLT P1 LA T FL O W LW T EW T CT 2 4 3 CT 2 4 3 CT 1 2 1 CT 1 2 1 Status G DI SC H P1 6 P1 7 P1 8 P1 5 (Auro ra E xpan sion Boa rd) AX B-A SW1 Modbus Add. ID Future Use 1 2 3 4 5 ON OFF Future Use Acc 2 – Dip 1 Acc 2 – Dip 2 S+ 5 C C C 21 IN OU T +5 S SC T 2 1 3 HW 12 C P1 2 SCP 2 1 3 HW P8 MO TO R P6 RS 48 5 P7 ZO NE P9 AB C ST EP PER AN A AC C2 DH DI V NO CO M K6 NO CO M K5 C R L1 L1 L2 L2 P1 0 P5 P1 1 C R (-) (+ ) _{(-) R C} (+ ) (+) (-) R C P4 P2 K1 K2 K3 HA 2 HA 1 SG I LO O P VS D AT A VS P UM P PU MP SL AV E P3 V+ C R TX RX +5 P1 4 LLT P1 LA T FL O W LW T EW T CT 2 4 3 CT 2 4 3 CT 1 2 1 CT 1 2 1 Status G DI SC H P1 6 P1 7 P1 8 P1 5 (Auro ra E xpan sion Boa rd) AX B-A SW1 Modbus Add. ID Future Use 1 2 3 4 5 ON OFF Future Use Acc 2 – Dip 1 Acc 2 – Dip 2 S+ 5 C C C 21 IN OU T +5 S SC T 2 1 3 HW 12 C P1 2 SCP 2 1 3 HW P8 MO TO R P6 RS 48 5 P7 ZO NE P9 AB C ST EP PER AN A AC C2 DH DI V NO CO M K6 NO CO M K5 C R L1 L1 L2 L2 P1 0 P5 P1 1 C R (-) (+ ) _{(-) R C} (+ ) (+) (-) R C P4 P2 K1 K2 K3 HA 2 HA 1 SG I LO O P VS D AT A VS P UM P PU MP SL AV E P3 V+ C R TX RX +5 P1 4 LLT P1 LA T FL O W LW T EW T CT 2 4 3 CT 2 4 3 CT 1 2 1 CT 1 2 1 Status G DI SC H P1 6 P1 7 P1 8 P1 5 (Auro ra E xpan si on Boa rd) AX B-B SW1 Modbus Add. ID Future Use 1 2 3 4 5 ON OFF Future Use Acc 2 – Dip 1 Acc 2 – Dip 2 S+ 5 C C C 21 IN OU T +5 S SC T ₂1 3 HW 12 C P1 2 SC P 2 1 3 HW P8 MO TO R P6 RS 48 5 P7 ZO NE P9 AB C ST EP PER AN A AC C2 DH DI V NO CO M K6 NO CO M K5 C R L1 L1 L2 L2 P1 0 P5 P1 1 C R (-) (+ ) _{(-) R C} (+ ) (+) (-) R C P4 P2 K1 K2 K3 HA 2 HA 1 SG I LO O P VS D AT A VS P UM P PU MP SL AV E P3 V+ C R TX RX +5 P1 4 LLT P1 LA T FL O W LW T EW T CT 2 4 3 CT 2 4 3 CT 1 2 1 CT 1 2 1 Status G DI SC H P1 6 P1 7 P1 8 P1 5 (Auro ra E xpan si on Boa rd) AX B-B SW1 Modbus Add. ID Future Use 1 2 3 4 5 ON OFF Future Use Acc 2 – Dip 1 Acc 2 – Dip 2 S+ 5 C C C 21 IN OU T +5 S SC T ₂1 3 HW 12 C P1 2 SC P 2 1 3 TT Whi te ( 81) Whi te ( 80) TT 2) le (8 Purp Purp le (8 3) TT Whi te/ Tan ( 85) Whi te/ Tan ( 84)

TT (86) hite /W ple Pur Pur ple /Whi te (8 7) TT 88) wn ( Bro Bro wn ( 89) TT 90) hite ( n/W Brow Brow n/W hite ( 91) To A BC -B P 6 To AB C -A P6 Re d Re d Red ( 104) Whit e (103) Blac k (102) Di sc h Pr es su re B Re d Re d Red ( 98) Whit e (97) Blac k (9 6) Di sc h Pr es su re A Re d Re d Red ( 99) Whit e (100) Blac k (101) Su ct Pr es su re A Re d Re d Red ( 105) Whit e (106) Blac k (107) Su ct Pr es su re B T T Blue (93 ) Blue (92) SC T A T T Blu e/W h (95) Blu e/W h (94) SC T B Blue (26 ) Blue (27 ) Red ( 28) Red ( 29) Blac k Blac k Br ow n Br ow n Blu e/W hite (30 ) Blu e/W hite (31 ) Red/ Whit e (3 2) Red/ Whit e (3 3) Co m p A T 1 Co m p A T 2 Au x He at C t Lo ad P um p CT Blac k Blac k Br ow n Br ow n Sour ce P um p CT Au x 2 CT Co m p B T 1 Co m p B T 2 Bl ue /W hi te (4 5) Pi nk /W hi te (4 6) Ye llow /W hi te (4 7) Pu rp le /W hi te (4 8) Bl ue (4 9) Pi nk (5 0) Ye llo w ( 51 ) Pu rp le (5 2) Lo ad F low S w itc h Fi le d I ns tal le d So ur ce F lo w S wi tch Fi le d I ns tal le d ES T LS T EL T LLT LLT - A LLT - B Hy dr oZ on e C on tro ller Wi ring OAT S ens or GeoT ank Sen sor OAT OAT Tank Tank Red ( GND) Red ( TS) Hy dr oZ on e HZ 0 Co nt ro lle r GN D TS OA T GN D -+ HZ C Hy dr oZ on e HZ 0 Co nt ro lle r GN D TS OA T GN D -+ HZ C R C O/ B P V C1 C2 C3 C4 C3 C2 C1 V P O/B C R --C4 --TB ES Em er g S h ut d ow n LS Lo ad S he d LO 1 Lo ck ou t C irc ui t A R 24V AC C 24 V AC Co m m on O Re ve rs in g V al ve G Fa n Y1 Co m pr es so r A W El ec tr ic H ea t DH Deh um id iĮ ca Ɵ on LO 2 Lo ck ou t C irc ui t B Y2 Co m pr es so r B Cl as s 2 TB ES Em er g S h ut d ow n LS Lo ad S he d LO 1 Lo ck ou t C irc ui t A R 24V AC C 24 V AC Co m m on O Re ve rs in g V al ve G Fa n Y1 Co m pr es so r A W El ec tr ic H ea t DH Deh um id iĮ ca Ɵ on LO 2 Lo ck ou t C irc ui t B Y2 Co m pr es so r B Cl as s 2 Hy dr oZ on e C on tro ller Wi ring OAT S ens or GeoT ank Sen sor OAT OAT Tank Tank Red ( GND) Red ( TS) Hy dr oZ on e HZ 0 Co nt ro lle r GN D TS OA T GN D -+ HZ C R C O/ B P V C1 C2 C3 C4 --TB ES Em er g S h ut d ow n LS Lo ad S he d LO 1 Lo ck ou t C irc ui t A R 24V AC C 24 V AC Co m m on O Re ve rs in g V al ve G Fa n Y1 Co m pr es so r A W El ec tr ic H ea t DH Deh um id iĮ ca Ɵ on LO 2 Lo ck ou t C irc ui t B Y2 Co m pr es so r B Cl as s 2 Legen d Legen d Fa ct or y L o w V ol ta ge W ir in g Fi el d L ow V ol ta ge W ir in g 1234567812345678 RJ 45 C on n ec to r Legen d Fa ct or y L o w V ol ta ge W ir in g Fi el d L ow V ol ta ge W ir in g 12345678 RJ 45 C on n ec to r M odb us A dd. ID Fu tu re U se Fu tu re U se Ac c 2 – D ip 1 Ac c 2 – D ip 2 M odb us A dd. ID Fu tu re U se Fu tu re U se Ac c 2 – D ip 1 Ac c 2 – D ip 2 SW 1 1 2 3 4 5 SW 1 1 2 3 4 5 SW 1 1 2 3 4 5 ON OF F O N OF F SW 1 1 2 3 4 5 ON OF F M odb us A dd. ID Fu tu re U se Fu tu re U se Ac c 2 – D ip 1 Ac c 2 – D ip 2 SW 1 1 2 3 4 5 ON OF F No te s No te s 1 – If no fl ow s w itc h i s be in g us ed on th e l oad s ide , w ire s c onn ec te d t o H A-1 nee d t o be ju m pe red. C on nec t P ur pl e and Y el low w ire to ge th er . 2 – If no f low s w itc h i s b ei ng u se d o n t he s ou rc e s ide , w ire s c onn ec te d t o H A-2 ne ed to b e j um pe re d. C on ne ct P in k a nd B lu e w ire to ge th er . No te s 1 – If no fl ow s w itc h i s be in g us ed on th e l oad s ide , w ire s c onn ec te d t o H A-1 nee d t o be ju m pe red. C on nec t P ur pl e and Y el low w ire to ge th er . 2 – If no f low s w itc h i s b ei ng u se d o n t he s ou rc e s ide , w ire s c onn ec te d t o H A-2 ne ed to b e j um pe re d. C on ne ct P in k a nd B lu e w ire to ge th er . DESC RI PT IO N SW 2-4 SW 2-5 No t Us ed O N O N Cy cl e w ith C om pr esso r OF F O FF W ater V al ve S lo w Op en in ON OF F No t Us ed O FF O N AX B S W 2 A ccesso ry R el ay N ote 2 N ote 1

The Aurora Base Control System

Aurora Control Features Description Aurora ‘Base’ Aurora 'Advanced'

Microprocessor Compressor Control Microprocessor control of compressor for timings with FP1, HP,

LP, Condensate, assignable Acc relay • •

Advanced Microprocessor Features Smart Grid, Home Automation Alarm Inputs, and Accessory2

Relay (HRV/ERV) - •

Base Loop Pump Control Compressor Contactor powers Loop Pump and no loop pump

linking capability. • See below

Compressor Monitoring Control monitors compressor starts for high current, missing leg

etc. - •

Smart Grid/Utility Input Allows simple input to externally enable of

occupied/unoccu-pied mode for basic utility time of use programs. - Dry Contact x1

Aurora ‘Base’ Control

The Aurora ‘Base’ Control (ABC) System is a complete residential and commercial comfort system that brings all aspects of the HVAC system into one cohesive module network. The ABC features microprocessor control and HP, LP,

condensate and freeze detection, over/under voltage faults, along with communicating thermostat capability for complete fault detection text at the thermostat.

Aurora uses the Modbus communication protocol to communicate between modules. Each module contains the logic to control all features that are connected to the module. The Aurora ‘Base’ Control (ABC) has two Modbus channels. The first channel is configured as a master for connecting to devices such as a communicating thermostat, expansion board, or other slave devices. The second channel is configured as a slave for connecting the Aurora Interface Diagnostics Tool (AID Tool).

Aurora ‘Advanced’ Control

The Aurora ‘Advanced’

Control expands on the capability of the Aurora ‘Base’ Control (ABC) System by adding the Aurora Expansion Board (AXB). The additional features include compressor current monitoring, loop pump linking, intelligent hot water generator control, variable speed pump capability, and also allows for optional energy, refrigeration, and performance monitoring factory installed

add-on sensor kits. The AXB also features a secadd-ond field configurable accessory relay, and two home automation inputs that are AID configurable for different types of alarms from sump pumps to home security. The Smart Grid input is AID configurable with many options to react to Utility controlled relay operation for ON Peak optimization.

The Aurora Base Control System cont.

Add On Control Feature Kits

(factory installed) Description Aurora ‘Base’ Aurora 'Advanced'

Geo Energy Monitoring Kit Monitors realtime power consumption of compressor, aux

heat and pump. AXB required. - Standard

Refrigeration Monitoring Kit Monitors realtime pressures, temperatures, superheat, and

subcooling. AXB required. - Standard

Performance Monitoring Kit Monitors water temperatures - Standard

Data Logging (AWL) Kit Allows data logging of up to 12 months. Can also be

tempo-rarily installed for troubleshooting. - Optional

Service Device Description Aurora ‘Base’ Aurora 'Advanced'

Aurora Interface and Diagnostics (AID) Tool

Allows setup, monitoring and troubleshooting of any Aurora Control.

NOTE: Although the ABC has basic compatibility with all

Au-rora, new product features may not be available on older AID Tools. To simplify the basic compatibility ensure the version of AID is at least the same or greater than the ABC software version.

For Service (Ver. 1.xx or greater)

For Service (Ver. 2.xx or greater)

Add On Thermostats and Zoning Description Aurora ‘Base’ Aurora ‘Advanced’

The Aurora Base Control System cont.

Aurora ‘Base’ Control

NOTE: Refer to the Aurora Base Control Application and

Troubleshooting Guide and the Instruction Guide: Aurora Interface and Diagnostics (AID) Tool for additional information.

Control Features

• Random start at power up • Anti-short cycle protection • High and low pressure cutouts • Loss of charge

• Water coil freeze detection • Over/under voltage protection • Load shed

• Emergency shutdown • Diagnostic LED

• Test mode push button switch • Alarm output

• Accessory output with N.O. and N.C. • Modbus communication

Field Selectable Options via Hardware

DIP Switch (SW1)

– Test/Configuration Button (See SW1 Operation Table)

Test Mode

The control is placed in the test mode by holding the push button switch SW1 for 2 - 5 seconds. In test mode most of the control timings will be shortened by a factor of sixteen (16). LED3 (green) will flash at 1 second on and 1 second off. Additionally, when entering test mode LED1 (red) will flash the last lockout one time. Test mode will automatically time out after 30 minutes. Test mode can be exited by pressing and holding the SW1 button for 2 to 5 seconds or by cycling the power. NOTE: Test mode will automatically be exited after 30 minutes.

Reset Configuration Mode

The control is placed in reset configuration mode by holding the push button switch SW1 for 50 to 60 seconds. This will reset all configuration settings and the EEPROM back to the factory default settings. LED3 (green) will turn off when entering reset configuration mode. Once LED3 (green) turns off, release SW1 and the control will reset.

DIP Switch (SW2)

SW2-1 (Source) FP1 Selection – Low water coil temperature

limit setting for freeze detection. On = 30°F; Off = 15°F.

SW2-2 (Load) FP2 Selection – On = 30°F; Off = 15°F SW2-3 RV – O/B - thermostat type. Heat pump

thermostats with “O” output in cooling or “B” output in Heating can be selected. On = O; Off = B.

SW2-4 Access Relay Operation (P2) and 2-5

Access Relay Operation SW2-4 SW2-5

Cycle with Blower n/a Cycle with Compressor OFF OFF Water Valve Slow Opening ON OFF Cycle with Comm. T-stat Hum Cmd n/a

Cycle with Blower - (Not used on water-to-water) Cycle with Compressor - The accessory relay will cycle

with the compressor output.

Water Valve Slow Opening - The accessory relay will

cycle and delay both the blower and compressor output for 90 seconds.

SW2-6 CC Operation – selection of single or dual capacity

compressor. On = Single Stage; Off = Dual Capacity

SW2-7 Lockout and Alarm Outputs (P2) – selection of a

continuous or pulsed output for both the LO and ALM Outputs. On = Continuous; Off = Pulsed

SW2-8 Future Use

Alarm Jumper Clip Selection

From the factory, ALM is connected to 24 VAC via JW2. By cutting JW2, ALM becomes a dry contact connected to ALG.

Field Selectable Options via Software

(Selectable via the Aurora AID Tool)

Safety Features

The following safety features are provided to protect the compressor, heat exchangers, wiring and other components from damage caused by operation outside of design conditions.

Fuse – a 3 amp automotive type plug-in fuse provides

protection against short circuit or overload conditions.

Anti-Short Cycle Protection – 4 minute anti-short cycle

protection for the compressor.