Roth AHTR Series Installation Manual

RXT Series Packaged Water-to-Air Multi-Positional Heat PumpsEngineering Data andInstallation ManualTable of Contents:Section 1: Model NomenclatureMod

10Roth RXT Series, 14 Nov 2011DHeating data based on 70F EAT; Cooling data based on 80/67F EAT. See Correction Factors on page 18 for different condit

11RXT Series, 14 Nov 2011D RothHeating data based on 70F EAT; Cooling data based on 80/67F EAT. See Correction Factors on page 18 for different condit

12Roth RXT Series, 14 Nov 2011DHeating data based on 70F EAT; Cooling data based on 80/67F EAT. See Correction Factors on page 18 for different condit

13RXT Series, 14 Nov 2011D RothHeating data based on 70F EAT; Cooling data based on 80/67F EAT. See Correction Factors on page 18 for different condit

14Roth RXT Series, 14 Nov 2011DEWT Flow Air1ow HC HE LAT COP DH Air1ow TC SC HR EER DH°F GPM PSI FT CFM MBtuh MBtuh °F W/W MBtuh CFM MBtuh MBtuh MBtuh

15RXT Series, 14 Nov 2011D RothEWT Flow Air1ow HC HE LAT COP DH Air1ow TC SC HR EER DH°F GPM PSI FT CFM MBtuh MBtuh °F W/W MBtuh CFM MBtuh MBtuh MBtuh

16Roth RXT Series, 14 Nov 2011D(:7 )ORZ $LURZ +& +( /$7 &23 '+ $LURZ 7& 6& +5 ((5 '+) *30 36, )7 &)0 0%WXK 0%WXK ) :

17RXT Series, 14 Nov 2011D RothEWT Flow Air1ow HC HE LAT COP DH Air1ow TC SC HR EER DH°F GPM PSI FT CFM MBtuh MBtuh °F W/W MBtuh CFM MBtuh MBtuh MBtuh

18Roth RXT Series, 14 Nov 2011DHeating Correction Factors - Full LoadCooling Correction Factors Sensible Cooling Correction FactorsEAT °F HC HE kW50 1

19RXT Series, 14 Nov 2011D RothSection 7: Installation IntroductionINTRODUCTION:This geothermal heat pump provides heating and cooling as well as opti

2Roth RXT Series, 14 Nov 2011DSection 1: Model Nomenclature

20Roth RXT Series, 14 Nov 2011D4. Verify that all refrigerant tubing is free of dents and kinks. Refrigerant tubing should not be touching other unit

21RXT Series, 14 Nov 2011D RothConsumer Instructions: Dealer should instruct the consumer in proper operation, maintenance, fi lter replacements, therm

22Roth RXT Series, 14 Nov 2011DSection 9a: Unit PlacementUNIT PLACEMENT:When installing a geothermal heating and cooling unit, there are several items

23RXT Series, 14 Nov 2011D RothSection 9b: Unit ConversionUNIT CONVERSION:Units are shipped in the left hand return air, upfl ow confi guration. The con

24Roth RXT Series, 14 Nov 2011DDUCT WORK:All new ductwork shall be designed as outlined in Sheet Metal and Air Conditioning Contractors National Assoc

25RXT Series, 14 Nov 2011D RothSection 9c: Ductwork Installation$FFHVVLEOH)LOWHU5DFN+HDW3XPS)OH[&RQQHFWRU5HWXUQ$LU)OH[&RQQHFWRU6XSSO\$LU

26Roth RXT Series, 14 Nov 2011DOpen Loop PipingPlacement of the components for an open loop system are important when considering water quality and lo

27RXT Series, 14 Nov 2011D RothWater QualityThe quality of the water used in geothermal systems is very important. In closed loop systems the dilution

28Roth RXT Series, 14 Nov 2011DSection 10: Unit Piping InstallationInterior PipingAll interior piping must be sized for proper fl ow rates and pressure

29RXT Series, 14 Nov 2011D RothTypical Non-Pressurized Flow Center InstallationStanding column fl ow centers are designed to operate with no static pre

3RXT Series, 14 Nov 2011D RothGround Loop Heat PumpGround Water Heat PumpNote: Rated in accordance with ISO Standard 13256-1 which includes Pump Penal

30Roth RXT Series, 14 Nov 2011DCondensation Drain ConnectionConnect the EZ-Trap to the condensate drain on the equipment drain connection. The condens

31RXT Series, 14 Nov 2011D RothAntifreeze Overview In areas where minimum entering loop temperatures drop below 40°F, or where piping will be routed t

32Roth RXT Series, 14 Nov 2011DNotes: 1. Consult with your representative or distributor if you have any questions regarding antifreeze selection or

33RXT Series, 14 Nov 2011D RothTable 5: Antifreeze Percentages by Volume0.9600 0.9700 0.9800 0.9900 1.0000 1.0100 1.0200 1.0300 1.0400 1.0500 -5 0

34Roth RXT Series, 14 Nov 2011DCONTENTS OF THE DESUPERHEATER FITTING KIT,P/N 11080008001: • (1) p/n 23-23-0024-001, Installation Instructions • (1)

35RXT Series, 14 Nov 2011D Roth15. Shut off the valve installed in the desuperheater line close to the tee in the cold water line. Open the air vent

36Roth RXT Series, 14 Nov 2011DFigure 11: Typical Desuperheater InstallationSection 12: Desuperheater InstallationFigure 12: Desuperheater Installatio

37RXT Series, 14 Nov 2011D RothMICROPROCESSOR FEATURES AND OPERATION Roth geothermal heat pump controls provide a unique modular approach for controll

38Roth RXT Series, 14 Nov 2011DSafety Controls The control receives separate signals for high pressure, low pressure, low water fl ow, and condensate o

39RXT Series, 14 Nov 2011D RothDiagnostics The lockout board includes fi ve LEDs (status, high pressure, low pressure, low water fl ow, condensate overfl

4Roth RXT Series, 14 Nov 2011DSection 3a: Unit Dimensional DataModelDimensional Datawithout Control BoxDimensional Datawith Control BoxSupply Air(Top

40Roth RXT Series, 14 Nov 2011DSection 13: ControlsFigure 14: Lockout Board LayoutACRYLOCCGCCHPHPLPLPFSFSCOCOLockoutBoardStatusR2 R1 C2 C1WSDTES

41RXT Series, 14 Nov 2011D RothSection 13: ControlsTable 7: ECM Fan Performance - Two-Stage Compressor UnitsECM Fan Performance - Two-Stage Compresso

42Roth RXT Series, 14 Nov 2011DSection 13: Controls

43RXT Series, 14 Nov 2011D RothTable 9: Auxiliary Heater Electrical DataInstalling Electric Heater High Voltage Wires:All wiring MUST be done in stric

44Roth RXT Series, 14 Nov 2011D+-DCBridgeLEDDiodeRY124VAC input from unit #1+-DiodeRY224VAC input from unit #2RY1RY2240VAC input240VAC to pump(s)24VAC

45RXT Series, 14 Nov 2011D RothPERFORMANCE CHECKHeat of Extraction(HE)/Rejection(HR)Record information on the Unit Start-up FormEquipment should be in

46Roth RXT Series, 14 Nov 2011DSection 15: TroubleshootingA: UNIT WILL NOT START IN EITHER CYCLEThermostatSet thermostat on heating and highest temper

47RXT Series, 14 Nov 2011D RothSection 15: TroubleshootingF: NO WATER FLOWPump ModuleMake sure Pump Module is connected to the control box relay (chec

48Roth RXT Series, 14 Nov 2011D&KHFNIRUSURSHUFRPSUHVVRUQDPHSODWHYROWDJH$WWHPSWWRUHVWDUWWKHFRPSUHVVRU2.$OORZWRVWDUWWKHFRPSUHVVRUZKLOH

49RXT Series, 14 Nov 2011D RothSection 15: TroubleshootingTable 15: Refrigeration TroubleshootingSystem Faults ModeDischargePressureSuctionPressureSup

5RXT Series, 14 Nov 2011D RothSection 3b: Unit Physical DataDual Capacity Vertical Model Number

50Roth RXT Series, 14 Nov 2011D

51RXT Series, 14 Nov 2011D RothTo suction line bulbTo suction lineAir CoilSuctionCoaxDischargeHeatingModeAir CoilSuctionCoaxDischargeCoolingModeLiquid

Cut along this lineEQUIPMENT START-UP FORMCustomer Name:_________________________________________________________________ Customer Address:___________

Equipment Start-Up Process Check the following before power is applied to the equipment Caution: Do not start-up the unit until the new structure is

STANDARD RESIDENTIAL WARRANTY Roth Industries, Inc. for brand: “TerraStar” Residential Single Family 10 YEAR LIMITED WA

OPTIONAL WARRANTY Roth Industries, Inc. for brand: “TerraStar” Residential Single Family 5 YEAR LIMITED WARRANTY (5/5/5) Roth Industries, Inc. Off

6Roth RXT Series, 14 Nov 2011DSection 4: Unit Electrical DataTwo-Stage Packaged UnitsModelVoltageCode60Hz Power CompressorECMFan MotorFLAHWGPumpFLAExt

7RXT Series, 14 Nov 2011D RothWater Flow SelectionProper fl ow rate is crucial for reliable operation of geothermal heat pumps. The performance data s

8Roth RXT Series, 14 Nov 2011DHeating data based on 70F EAT; Cooling data based on 80/67F EAT. See Correction Factors on page 18 for different conditi

9RXT Series, 14 Nov 2011D RothHeating data based on 70F EAT; Cooling data based on 80/67F EAT. See Correction Factors on page 18 for different conditi