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NHP XTerra Series Installation And Maintenance Manual

Horizontal and vertical, single and dual stage geothermal heat pumps forcair, aqua2, sourc3
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NORTHERN HEAT PUMP
INSTALLATION
And Maintenance Manual
X
X
TERRA SERIES
TERRA SERIES
Horizontal and Vertical,
Horizontal and Vertical,
Single and Dual Stage Geothermal Heat Pumps:
Single and Dual Stage Geothermal Heat Pumps:
FORCAIR
FORCAIR
AQUA2
AQUA2
SOURC3
SOURC3
TABLE OF CONTENTS
TABLE OF CONTENTS
Serial Number Breakdown
Serial Number Breakdown
Model Descriptions
Model Descriptions
Physical Data & Dimensions
Physical Data & Dimensions
General Information
General Information
Closed Loop Applications
Closed Loop Applications
Open Loop Applications
Open Loop Applications
Hydronic Heat
Hydronic Heat
Storage Tanks
Storage Tanks
Electrical
Electrical
Thermostats
Thermostats
Desuperheater
Desuperheater
Start Up
Start Up
Troubleshooting
Troubleshooting
Warranty
Warranty
TERRA SERIES
ENERGY EXTRACTION SYSTEM
2
2
2
2
4
3
7
6
8
7
11
10
13
12
14
13
17
16
18
17
22
21
24
23
25
24
27
26

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Summary of Contents for NHP XTerra Series

  • Page 1 TERRA SERIES NORTHERN HEAT PUMP ENERGY EXTRACTION SYSTEM INSTALLATION And Maintenance Manual TERRA SERIES TERRA SERIES Horizontal and Vertical, Horizontal and Vertical, Single and Dual Stage Geothermal Heat Pumps: Single and Dual Stage Geothermal Heat Pumps: FORCAIR FORCAIR AQUA2 AQUA2 SOURC3 SOURC3 TABLE OF CONTENTS...
  • Page 2 RESIDENTIAL MODEL # DESCRIPTION MODEL # DESCRIPTION RA VE 502 - C 1 3 1 UNIT DESIGNATION POWER SUPPLY R=RESIDENTIAL 1=208/230V 1Ph 2=208/230V 3Ph 3=575V 3Ph 4=460/480V 3PH UNIT TYPE 5=220/240V 1PH 50HZ 6=380V 3PH 50HZ A=STANDARD M=MULTI D=DUAL COMPRESSOR S=SPECIAL BLOWER TYPE W=HEAT ONLY...
  • Page 3 COMMERCIAL MODEL # DESCRIPTION WE 114 2 - C 1 1 UNIT DESIGNATION POWER SUPPLY C=COMMERCIAL 1=208/230V 1Ph 2=208/230V 3Ph 3=575V 3Ph 4=460/480V 3PH UNIT TYPE 5=220/240V 1PH 50HZ A=STANDARD 6=380V 3PH 50HZ M=MULTI D=DUAL COMPRESSOR BLOWER TYPE S=SPECIAL 1=None W=HEAT ONLY 2=Standard PSC 3 Speed Blower T=TWO SPEED...
  • Page 4 Terra Physical Data MODEL RA*F36 RA*F48 RA*F61 RA*F68 Compressor -1 Each SCROLL Factory Charge R22 -(oz) PSC Fan Motor & Blower Fan Motor Type/Speeds PSC/3 PSC/3 PSC/3 PSC/3 Fan Motor HP 0.75 0.75 Blower Wheel Size Dia. x W 10x10 10x10 ECM Fan Motor &...
  • Page 5 Terra Physical Data R410A SINGLE STAGE COMPRESSOR MODEL RA*E36 RA*E50 RA*E57 RA*E70 Compressor -1 Each SCROLL Factory Charge R22 -(oz) PSC Fan Motor & Blower Fan Motor Type/Speeds PSC/3 PSC/3 PSC/3 PSC/3 Fan Motor HP 0.75 0.75 Blower Wheel Size Dia. x W 10x10 ECM Fan Motor &...
  • Page 6 Terra Physical Data R410A DUAL STAGE COMPRESSOR MODEL RT*E30 RT*E40 RT*E51 RT*E60 Compressor -1 Each SCROLL Factory Charge R22 -(oz) PSC Fan Motor & Blower Fan Motor Type/Speeds PSC/3 PSC/3 PSC/3 PSC/3 Fan Motor HP 0.75 Blower Wheel Size Dia. x W 10x10 ECM Fan Motor &...

  • Page 7: Horizontal Mounting

    Locate the unit in an indoor area where the ambient provide maximum efficiency and reliability. Solid and simple temperature will remain above 7°C. NHP provides 3 electric controls allow for low maintenance and built in safety removable panels for ease of servicing; front, right and rear protection.

  • Page 8: Ducting System

    CLOSED LOOP APPLICATIONS HORIZONTAL CONDENSATE DRAIN A closed loop system re-circulates the same water/ Horizontal units are not internally trapped: An antifreeze solution through a closed system of under- external trap is required. Two drain connections are ground high-density polyethylene pipe. As the solution located at the radiator end of the cabinet.
  • Page 9 DO NOT Mix more than 25% propylene glycol with water Pressure/Temperature (P/T) plugs should be installed in to achieve a lower than –9°C freeze protection. (See Table the adaptor elbow on the entering and leaving water line of #2) A more concentrated mixture cannot be pumped through the heat pump on a closed system (Figure# 6) A the earth loop at low temperatures.
  • Page 10 FLUSHING AND FILLING THE SYSTEM USING 3 WAY Step 3 To Earth Loop From Earth Loop VALVES Step 1 From Use water and a high volume head circulator pump to flush Flush Flush air and debris and to fill the loop system. Cart Cart - Refer to recommendations provided by IGSHPA when...
  • Page 11 OPEN SYSTEM APPLICATIONS CAUTION: Using a drain field requires soil conditions and adequate sizing to assure rapid percolation or the required An open system gets its name from the open discharge of flow rates will not be achieved. Consult local codes and water after it has been used by the heat pump.
  • Page 12 Depending on the specific water quality issue, the water coil can be cleaned by the following methods: Chlorine Cleaning (Bacterial Growth) 1. Turn thermostat to “Off” position. 2. Connect a circulating pump to hose bibs on entering water and leaving waterside of heat exchanger. 3.
  • Page 13 Fan coils can be used with NHP hydronic AQUA2 heat damage the heat pump. pumps in the heating and cooling mode. In many cases Other forms of closed loop systems such as indoor radiant floor heating and fan coil cooling are used together.

  • Page 14: Storage Tanks

    Figure # 8 Supply Individual Zones Expansion Tank SOURC3 Pump Zone Supply Valves Hydronic Heat Load Hot Water Storage Pump Module Tank Zone Return Lines Earth Heat Exchanger Pump Conceptual Drawing Only STORAGE TANKS Coupling the heat pump to the space conditioning heat In applications that use multiple smaller zones, exchanger through a water storage tank is recommended storage tanks absorb the relatively large amount of...
  • Page 15 CIRCULATION FLUID Small circulator pumps can be used. If these pumps are The fluid circulating through the hydronic side of the impedance protected they do not require additional fusing if geothermal heat pump system is the transfer medium for powered directly from the heat pump. If impedance the heating and cooling being supplied to the conditioned protected pumps are not used, inline fuses should be space.

  • Page 16: Electrical Service

    ELECTRICAL The aqua stat tells the heat pump when hydronic side water ELECTRICAL SERVICE heating is required and when the hydronic side is satisfied. The SOURC3 combination heat pump can only run one The main electrical service should be fusible and capable of mode at a time (one thermostat must have priority over the providing the amperes required by the unit at nameplate other).
  • Page 17 FORCAIR Wiring Diagram Figure #11 SOURC3 Wiring Diagram Figure #12 Page 17...
  • Page 18 Figure #13 AQUA2 Wiring Diagram Block Terminal – Thermostat Thermostat/Aqua stat Consult the instructions in the thermostat box for proper Block terminals have the following input functions: mounting and thermostat operation. CAUTION: Improper wiring of controls may result in transformer burnout.
  • Page 19 A simple, single stage heating aqua stat on a storage Second Stage Duct Heater - FORCAIR Model tank or wall mounted thermostat may be all that is A second stage electric duct heater can be added in required for simple heat only systems. This conjunction with a TERRA Series heat pump to help thermostat closes and passes power to the Y terminal...

  • Page 20: Electrical Data

    Electrical Data Xterra Series FORCAIR (V,H) Without Pumps Voltage Compressor Total Min. Max. Fuse Model (60 Hz) Ampac. Ckt Bkr. 208/230-1 41.0 12.0 14.5 208/230-1 10.7 45.0 12.7 15.4 208/230-1 12.1 54.0 14.1 17.1 208/230-1 13.6 63.0 15.6 19.0 208/230-1 17.9...
  • Page 21 Electrical Data R410A Xterra Series FORCAIR (V,H) Without Pumps Voltage Compressor Total Min. Max. Fuse Model (60 Hz) Ampac. Ckt Bkr. 208/230-1 10.0 48.0 12.0 14.5 208/230-1 15.0 61.0 17.0 20.8 208/230-1 14.3 64.0 16.3 19.9 30(2 stage) 208/230-1 19.0 82.0...

  • Page 22: Inline Fuse

    An An NHP Xterra unit equipped with an optional desuperheater air vent in the inlet line can also help systems where air is a can provide supplemental heating of 60 to 70% of a home’s...
  • Page 23 METHOD #2 Figure #15 Hot Water to House Cold Water Supply Drawing water from the bottom drain and One way Valve returning it to the cold water supply line. This method may require a check valve in the return line to the cold water supply to prevent water from flowing backwards through the desuperheater.

  • Page 24: Troubleshooting

    TROUBLESHOOTING Problem Possible Cause Possible Solution Reset circuit or replace fuse. Always check and use correct size Unit does not Tripped Breaker/Blown Fuse Blown controller fuse Replace controller fuse. Replace with correct fuse. Low Voltage Supply Contact local power company if voltage is below that specified for your unit Low voltage in circuit Check the 24 volt transformer for voltage less than 18 volts or possible burnout.
  • Page 25 Lack of pressure, temperature and/or quantity of water. Loop fluid Check ductwork design or introduction of ambient air through windows Insufficient cooling or Loss of Conditioned Air and doors. heating Improper thermostat location (e.g. near kitchen). Anticipator should Thermostat be 1.0 or 1.2 Lack of airflow or improper distribution of air.
  • Page 26 On Year 1, Northern Heat Pump will replace defective parts, F.O.B Winkler MB, prepaid freight only. Defective parts include only parts that fail due to defective material or workmanship and not improper installation. NHP will cover the cost of the labour to...
  • Page 27 Notes: Page 27...
  • Page 28 3 - 201 South Railway Ave., Winkler, Manitoba, CANADA, R6W 1J9 Phone: 1-204-325-9772 Fax: 1-204-325-4954 email: info@northernheatpump.com Rev.12/02/08...

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