Maritime Geothermal TF-45 Installation And Service Manual
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Maritime Geothermal TF-45 Installation And Service Manual

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Installation and Service Manual
TF-Series
Triple Function Geothermal Heat Pump
Two-Stage R410a
Model Sizes 45-80
Maritime Geothermal Ltd.
info@nordicghp.com
P.O. Box 2555, 170 Plantation Road
www.nordicghp.com
Petitcodiac, NB E4Z 6H4
001223MAN-05
(506) 756-8135
1-Jul-2017
Page 1
001223MAN-05
ECO 000250
1-Jul-2017

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Summary of Contents for Maritime Geothermal TF-45

  • Page 1 Installation and Service Manual TF-Series Triple Function Geothermal Heat Pump Two-Stage R410a Model Sizes 45-80 Maritime Geothermal Ltd. info@nordicghp.com P.O. Box 2555, 170 Plantation Road www.nordicghp.com Petitcodiac, NB E4Z 6H4 001223MAN-05 (506) 756-8135 1-Jul-2017 Page 1 001223MAN-05 ECO 000250 1-Jul-2017...

  • Page 2: Safety Precautions

    SAFETY PRECAUTIONS WARNING: Ensure all access panels are in place and properly secured before applying power to the unit. Failure to do so may cause electrical shock. WARNING: Before performing service or maintenance on the heat pump system, ensure all power sources are DISCONNECTED.
  • Page 3 HACW SDERF This manual applies only to the models and revisions listed in this table. Maritime Geothermal Ltd. has a continuous improvement policy and reserves the right to modify specification data at any time without prior notice . 1-Jul-2017 Page 3...

  • Page 4: Table Of Contents

    ..........17 Pressure Drop Data ............... 62 Heat Pump Sizing ..............17 Duct Systems - General ............17 Performance Tables (Air): TF-45 ........... 63 Duct Systems - Grill Layout ..........18 Performance Tables (Air): TF-55 ........... 64 Thermostat Location ............. 18 Performance Tables (Air): TF-65 ...........

  • Page 5: Tables & Documents

    Tables & Documents Tables Table 1 - Power Supply Connections (Heat Pump) ................. 6 Table 2 - Power Supply Connections (Optional Plenum Heater) ............. 6 Table 3 - Air Thermostat Signal Description .................... 7 Table 4 - Aquastat Signal Description ...................... 7 Table 5 - Typical Aquastat Settings ......................

  • Page 6: Installation Basics

    Installation Basics Unit Description The Electrical Tables in the Model Specific section and the ELB diagram contain information about the size of wire for the The TF-Series unit is a high efficiency two-stage geother- connections, as well as the recommended breaker size for both mal heat pump.

  • Page 7: Indoor Loop Circulator Pump Wiring

    / backup heat. Buffer tanks with * Connect AR to AR with a dry contact to reduce the air- suitable elements are available from Maritime Geothermal as flow by 15%. Refer to the Fan/Blower Motor sub-section for accessories.

  • Page 8: Priority Selection

    Fan/Blower Motor dronic system from becoming too cold should there be a failure in the heating system. The blower is equipped with a direct drive ECM (Electronically Commutated Motor) for maximum efficiency. The Drawing 000344CDG shows how a typical zone system motor features a soft start which provides a smooth, quiet ramp would be set up with the TF unit.

  • Page 9: Air Return Orientation

    Air Return Orientation Fan/Blower Outlet Orientation The heat pump can be ordered as left or right return from TF-Series heat pumps have a field configurable blower. Its the factory. This must be specified at time of order as the physi- default location from the factory is in the top of the unit, provid- cal construction of the two configurations is different.

  • Page 10: Safety Controls

    Safety Controls WARNING: If the control board enters perma- The heat pump has two built in safety controls which are nent lockout mode there is a serious problem designed to protect the unit from situations which could damage with the system and it must be rectified if the it should the operation of the refrigeration circuit fall outside the unit is to maintain good service.

  • Page 11: Sample Bill Of Materials - Ground Loop

    • 1 OR 2 PUMP PACK • DOLE VALVE • PIPE ADAPTERS FOR PUMP PACK • TACO OR SOLENOID VALVE OPTIONAL FROM MARITIME GEOTHERMAL OPTIONAL FROM MARITIME GEOTHERMAL • ANTI-VIBRATION PAD FOR UNDER UNIT • ANTI-VIBRATION PAD FOR UNDER UNIT •...

  • Page 12: 001827Cdg - Typical Thermostat Connections

    001223MAN-05 Page 12 1-Jul-2017...

  • Page 13: 001224Cdg - Two Stage Aquastat Connection Diagram

    1-Jul-2017 Page 13 001223MAN-05...

  • Page 14: 000344Cdg - Typical Heating Only Zone Wiring

    001223MAN-05 Page 14 1-Jul-2017...

  • Page 15: 001901Pdg - Wiring For Best Cooling Mode Dehum

    1-Jul-2017 Page 15 001223MAN-05...

  • Page 16: 000970Pdg - Connection To Dhw Pre-Heat Tank

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  • Page 17: Sizing And Ductwork

    3200 3800 A duct system capable of supplying the required air flow is of utmost importance. Maritime Geothermal Ltd. recommends 4200 that the external static pressure from the duct system be kept THE TABLES ABOVE ARE FOR INFORMATION ONLY.

  • Page 18: Duct Systems - Grill Layout

    Duct Systems - Grill Layout The second function of the plenum heater is to provide emergency heat should a heat pump problem occur. This can Most forced air heating systems in homes have the floor grills be engaged by setting the thermostat to emergency heat, allow- placed around the perimeter of the room.

  • Page 19: 001915Inf - Internal Plenum Heater Installation

    1-Jul-2017 Page 19 001223MAN-05...

  • Page 20: 002222Pdg - Typical Duct & Condensate Connections

    001223MAN-05 Page 20 1-Jul-2017...

  • Page 21: Duct Sizing Guide

    TABLE 12 - Duct Sizing Guide (external static of 0.20” H Minimum Return Air Airflow Diameter Airflow Duct Area Rectangular Equivalents (in) Diameter (CFM) (in) (L/s) (sq.in) (in) 2.25 x 10 3 x 8 3.5 x 6 4 x 5.5 5 x 5 2.25 x 10 3 x 8...

  • Page 22: Hydronic Installation

    Hydronic Installation Hydronic Systems The most common applications for the TF-Series hydronic heating are: (see drawing 000530PDG for typical zone types)  Radiant in-floor heating  On-demand domestic hot water  Swimming pool or spa The radiant in-floor areas of the home may be sectioned into several areas called zones.

  • Page 23: 002238Pdg - Typical Loop Connections - Tf Series

    1-Jul-2017 Page 23 001223MAN-05...

  • Page 24: 001046Pdg - Typical Buffer Tank Configuration: 4 Port

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  • Page 25: 001981Pdg - Typical Buffer Tank Configuration: 2 Port

    1-Jul-2017 Page 25 001223MAN-05...

  • Page 26: 000530Pdg - Typical Zone Types

    001223MAN-05 Page 26 1-Jul-2017...

  • Page 27: 001055Pdg - Connection To On-Demand Dhw Tank

    1-Jul-2017 Page 27 001223MAN-05...

  • Page 28: Ground Loop Installations

    Figure 1: Ground Loop Accessories & Tools OUT. Circulator Pump Module Maritime Geothermal Ltd. offers compact pump modules with built in three way valves to facilitate filling and purging the ground loop. Refer to drawing 000906CDG at the end of this section.

  • Page 29: Adding Antifreeze Solution

    Once the lines have been filled and no more air bubbles are TABLE 14 - Volume of fluid per 100 ft. of pipe appearing in the line, adjust the circulator pump module valves Volume /100ft. to circulate water through the heat pump using the same technique as described above.

  • Page 30: 000608Inf - Typical Horiz. Ground Loop Configuration

    001223MAN-05 Page 30 1-Jul-2017...

  • Page 31: 000609Inf - Typical Vert. Ground Loop Configuration

    1-Jul-2017 Page 31 001223MAN-05...

  • Page 32: 000906Cdg - Circulator Pump Module Installation

    001223MAN-05 Page 32 1-Jul-2017...

  • Page 33: 001823Cdg - Dual Flow Pump Module Installation

    1-Jul-2017 Page 33 001223MAN-05...

  • Page 34: 000629Pdg - Pump Module Inst - 2 Units On 1 Loop

    001223MAN-05 Page 34 1-Jul-2017...

  • Page 35: Open Loop Installations

    Open Loop Installations Well Water Temperature tween the pumping fluid level and the pump intake) would con- tribute linearly to the flow rate should a larger pump be installed. The temperature of the well water should be a minimum of 41°F (5°C), and should normally be 45+°F (7°C+).

  • Page 36: Water Valve

    will not necessarily be pumped into the same aquifer, depend- Figure 2: Open Loop Accessories & Tools ing on underground conditions. The return well must be able to supply at least the same quantity of water as the amount you Cumulative Water wish to inject into it, preferably much more, since injection ca-...

  • Page 37: Submersible Pump Selection

    Plumbing the Heat Pump Dole valves can emit a ‘whistling’ sound if the pressure drop through them is high. Therefore, they should be placed The port connections for the Outdoor Loop are 1” brass where the noise will not cause a nuisance, e.g. outside the FPT fittings.

  • Page 38: 000907Cdg - Typical Open Loop Installation

    001223MAN-05 Page 38 1-Jul-2017...

  • Page 39: 001822Cdg - Dual Flow Open Loop Installation

    1-Jul-2017 Page 39 001223MAN-05...

  • Page 40: 000619Inf - Ground Water Disposal Methods

    001223MAN-05 Page 40 1-Jul-2017...

  • Page 41: Startup Procedure

    A completed copy should be left on site, a copy kept on file by the installer and a copy should be sent to Maritime Geothermal Ltd. Check the boxes or fill in the data as each step is completed. For data boxes, circle the appropriate units.

  • Page 42: Unit Startup (Air)

    1. The installer shall sign and date the Startup Record and have the homeowner sign as well. The installer shall leave the Startup Record with the homeowner, retain a copy for filing and send a copy to Maritime Geothermal Ltd. for warranty registration.

  • Page 43: Startup Record (Air)

    Thermostat setpoint, suction and discharge pressures at cycle end °F °C Date: Installer Signature: Homeowner Signature: A total of three copies are required, one for the homeowner, one for the installer and on to be sent to Maritime Geothermal Ltd. 1-Jul-2017 Page 43 001223MAN-05...

  • Page 44: Unit Startup (Hydronic)

    1. The installer shall sign and date the Startup Record and have the homeowner sign as well. The installer shall leave the Startup Record with the homeowner, retain a copy for filing and send a copy to Maritime Geothermal Ltd. for warranty registration.

  • Page 45: Startup Record (Hydronic)

    Startup Record Sheet (Hydronic): TF-Series Size 45-80 Two-Stage R410a Installation Site Startup Date Installer City Company Province Model Country Serial # Check boxes unless asked to record data, circle units PRE-START INSPECTION Indoor Loop All shut-off valve are open (full flow available) (Hydronic) Loop is full and purged of air Antifreeze type...

  • Page 46: General Maintenance

    General Maintenance GENERAL MAINTENANCE SCHEDULE Item Interval Procedure Air Filter 6 months Inspect for dirt. Replace if necessary. Contactor 1 year Inspect for pitted or burned points. Replace if necessary. Condensate Drain 1 year Inspect for clogs. Remove and clean if necessary. Heat exchanger As required* Clean as per HEAT EXHCANGER FLUSING PROCEDURE below.

  • Page 47: Troubleshooting Guide

    Troubleshooting Guide The following steps are for troubleshooting the geothermal heat pump. If the problem is with the domestic hot water or the plenum heater, proceed to those sections at the end of the troubleshooting guide. Repair procedures and reference refriger- ation circuit diagrams can be found at the end of the troubleshooting guide.
  • Page 48 THERMOSTAT TROUBLESHOOTING Fault Possible Cause Verification Recommended Action No Y1 signal to Incorrect thermostat setup. Thermostat does not indicate a call for Correct the setup. heat. No 24VAC signal present across heat pump Y1 & C of the thermostat (after 6 minutes) Faulty thermostat to heat 24VAC signal present across Y1 &...

  • Page 49: Compressor Troubleshooting

    COMPRESSOR TROUBLESHOOTING Fault Possible Cause Verification Recommended Action Compressor will Faulty control board. Measuring from C on the terminal strip, Replace control board. verify there is voltage at Y, HP1, HP2, not start LP1, LP2, and both flow pins but no volt- age present at CC.
  • Page 50 OPERATION TROUBLESHOOTING - AIR HEATING MODE Fault Possible Cause Verification Recommended Action High Discharge Low airflow. See Fan Troubleshooting section Correct the problem. Pressure TXV adjusted too far closed. Verify superheat. It should be between 8- Adjust TXV to obtain 8-12°F (3-6°...
  • Page 51 OPERATION TROUBLESHOOTING - AIR HEATING MODE Fault Possible Cause Verification Recommended Action High Suction Leaking reversing valve. Reversing valve is the same tempera- Tap reversing valve, and switch it ture on both ends of body, common suc- back and forth between heating and Pressure tion line is warm, compressor is running cooling positions.

  • Page 52: Cooling Mode

    OPERATION TROUBLESHOOTING - COOLING MODE Possible Cause Verification Recommended Action Fault High Discharge Unit is overcharged. High subcooling, low delta T across Remove 1/2lb of refrigerant at a time (Only possible if unit has water coil. and verify that the discharge pressure Pressure been field serviced and incor- reduces.
  • Page 53 FAN/BLOWER TROUBLESHOOTING Fault Possible Cause Verification Recommended Action Low Airflow Dirty air filter Inspect. Replace. Dirty air coil. Inspect. Clean. Poor Ductwork Measure delta T between supply The ECM fan will provide proper and return ducts at the unit, it in airflow up to 0.5 inH2o for 1/2HP heating mode, it should not be motors and 0.7 inH2o for 1HP...
  • Page 54 HYDRONIC TROUBLESHOOTING - AQUASTAT Fault Possible Cause Verification Recommended Action No display on Transformer breaker 230VAC is present across L1 and L3 of Push breaker back in. If it trips again tripped. the compressor contactor but 24VAC is locate cause of short circuit and cor- aquastat.
  • Page 55 HYDRONIC OPERATION TROUBLESHOOTING Possible Cause Verification Recommended Action Fault High Discharge Aquastat set too high. Verify aquastat setting. Lower aquastat setting to recom- mended value of 115°F (46°C). Pressure Low or no Indoor loop flow. Delta T across the Indoor Loop ports Verify pump is working and sized should be 8-12°F (3-6°C), or compare correctly.
  • Page 56 HYDRONIC OPERATION TROUBLESHOOTING Fault Possible Cause Verification Recommended Action Low Suction TXV stuck almost closed or Adjusting the TXV does not affect the Adjust the TXV all the way in and out partially blocked by foreign superheat or the suction pressure. TXV a few times to loosen it.
  • Page 57 PLENUM HEATER TROUBLESHOOTING Fault Possible Cause Verification Recommended Action No 230VAC Disconnect switch open. Verify disconnect switch is in the ON po- Determine why the disconnect switch (if installed) sition. was opened, if all is OK close the across plenum switch.

  • Page 58: Troubleshooting Tools

    PLENUM HEATER TROUBLESHOOTING Fault Possible Cause Verification Recommended Action Plenum heater Fan not operating See Fan/Blower Troubleshooting Correct problem. Reset thermal thermal overload section overload. is tripped. Faulty overload Reset thermal overload Replace if faulty. DOMESTIC HOT WATER (DESUPERHEATER) TROUBLESHOOTING Fault Possible Cause Verification...

  • Page 59: Repair Procedures

    The heat pump is now ready for repairs. Always ensure nitrogen is flowing through the system during any brazing procedures to prevent oxidation inside the pipes. Maritime Geothermal Ltd. recommends replacing the liquid line filter-dryer any time the refrigeration system has been exposed to the atmosphere.

  • Page 60: Model Specific Information

    Model Specific Information Table 17 - Shipping Information Table 16 - Refrigerant - R410a MODEL WEIGHT DIMENSIONS in (cm) MODEL lb. (kg) TF-45 TF-55 TF-45 520 (236) 44 (112) 36 (91) 68 (173) TF-55 575 (261) 44 (112) 36 (91)

  • Page 61: Table 21 - Standard Capacity Ratings - Ground Loop Cooling 60Hz

    Model Size Liquid Flow Mode Airflow Capacity Drop Energy tons Watts Btu/hr Btu/W Stage 1 1030 1,060 32,600 9.04 30.8 TF-45 10.0 0.63 35.1 Stage 2 1200 1,965 44,100 12.9 6.57 22.4 Stage 1 1240 1,750 41,600 12.2 6.97 23.8 TF-55 12.0...

  • Page 62: Pressure Drop Data

    Pressure Drop Data Table 25 - Open Loop Pressure Drop Data Water @ 50°F FLOW TF-25 TF-45 TF-55 TF-65 TF-75 TF-80 (gpm) ΔP (psi) ΔP (psi) ΔP (psi) ΔP (psi) ΔP (psi) ΔP (psi) 10.0 11.0 12.0 13.0 14.0 15.0 16.0...

  • Page 63: Performance Tables (Air): Tf-45

    Performance Tables (Air) Air Heating Mode R410a 60 Hz TF-45-HACW-P-1T Source Data (Outdoor Loop) Power Consumption Sink Data (Indoor Loop) Evap. Cond. Flow Delta T Compressor Fan* Effective COPh Delta T Temp Temp. Flow Output °F °F °F °F Btu/hr...

  • Page 64: Performance Tables (Air): Tf-55

    Performance Tables (Air) Air Heating Mode R410a 60 Hz TF-55-HACW-P-1T Source Data (Outdoor Loop) Power Consumption Sink Data (Indoor Loop) Evap. Cond. Flow Delta T Compressor Fan* Effective COPh Delta T Temp Temp. Flow Output °F °F °F °F Btu/hr Watts Amps Watts Watts...

  • Page 65: Performance Tables (Air): Tf-65

    Performance Tables (Air) Air Heating Mode R410a 60 Hz TF-65-HACW-P-1T Source Data (Outdoor Loop) Power Consumption Sink Data (Indoor Loop) Evap. Cond. Flow Delta T Compressor Fan* Effective COPh Flow Delta T Temp Temp. Output °F °F °F °F Btu/hr Watts Amps Watts Watts...

  • Page 66: Performance Tables (Air): Tf-75

    Performance Tables (Air) Air Heating Mode R410a 60 Hz TF-75-HACW-P-1T Source Data (Outdoor Loop) Power Consumption Sink Data (Indoor Loop) Evap. Cond. Flow Delta T Compressor Fan* Effective COPh Delta T Temp Temp. Flow Output °F °F °F °F Btu/hr Watts Amps Watts Watts...

  • Page 67: Performance Tables (Air): Tf-80

    Performance Tables (Air) Air Heating Mode R410a 60 Hz TF-80-HACW-P-1S Source Data (Outdoor Loop) Power Consumption Sink Data (Indoor Loop) Evap. Cond. Flow Delta T Compressor Fan* Effective COPh Delta T Temp Temp. Flow Output °F °F °F °F Btu/hr Watts Amps Watts Watts...

  • Page 68: Performance Tables (Hydronic): Tf-45

    Performance Tables (Hydronic) Hydronic Heating Mode R410a 60 Hz TF-45-HACW-P-1T Source Data (Outdoor Loop) Power Consumption Sink Data (Indoor Loop) Evap. Cond. Flow Delta T Total Effective COPh Flow Delta T Temp Temp. Output °F °F °F °F Btu/hr Watts...

  • Page 69: Performance Tables (Hydronic): Tf-65

    Performance Tables (Hydronic) Hydronic Heating Mode R410a 60 Hz TF-65-HACW-P-1T Source Data (Outdoor Loop) Power Consumption Sink Data (Indoor Loop) Evap. Cond. Flow Delta T Total Effective COPh Flow Delta T Temp Temp. Output °F °F °F °F Btu/hr Watts Amps Watts °F...

  • Page 70: Performance Tables (Hydronic): Tf-80

    Performance Tables (Hydronic) Hydronic Heating Mode R410a 60 Hz TF-80-HACW-P-1T Source Data (Outdoor Loop) Power Consumption Sink Data (Indoor Loop) Evap. Cond. Flow Delta T Total Effective COPh Flow Delta T Temp Temp. Output °F °F °F °F Btu/hr Watts Amps Watts °F...

  • Page 71: Airflow Data

    Airflow Data Table 27: MED Airflow (nominal) STAGE 2 STAGE 1 FAN ONLY (Recirculation) AR1-AR2 AR1-AR2 AR1-AR2 Model Full Full Full reduction reduction reduction 1200 1020 1030 1500 1275 1240 1054 1900 1615 1540 1309 1064 2100 1785 1660 1411 1176 1000 2400...

  • Page 72: Electrical Tables

    Electrical Tables Table 31 - Heat Pump Electrical Information (208/230-1-60) Max Fuse/ Wire Model Compressor Circulators Breaker Size** Max A Amps Amps Amps 15.6 24.9 28.8 #8-2 21.2 33.0 38.3 #8-2 27.1 40.4 47.2 #6-2 29.7 44.0 51.4 #6-2 32.1 46.9 54.9 #6-2...

  • Page 73: Table 36 - Plenum Heater Electrical Information (208/230-1-60)

    Electrical Tables (continued) TABLE 36 - Plenum Heater Electrical Information (230-1-60) (208-1-60) (220-1-50) Nominal Actual Breaker Wire Actual Breaker Wire Actual Breaker Wire (kW) (kW) Size (kW) Size (kW) Size 20.8 26.0 18.1 22.6 19.1 19.1 29.2 36.5 25.3 31.6 26.7 26.7 41.7...

  • Page 74: Wiring Diagram (208/230-1-60)

    Wiring Diagram (208/230-1-60) 001223MAN-05 Page 74 1-Jul-2017...

  • Page 75: Electrical Box Layout (208/230-1-60)

    Electrical Box Layout (208/230-1-60) 1-Jul-2017 Page 75 001223MAN-05...

  • Page 76: Wiring Diagram (208-3-60)

    Wiring Diagram (208-3-60) 001223MAN-05 Page 76 1-Jul-2017...

  • Page 77: Electrical Box Layout (208-3-60)

    Electrical Box Layout (208-3-60) 1-Jul-2017 Page 77 001223MAN-05...

  • Page 78: Wiring Diagram (460-3-60)

    Wiring Diagram (460-3-60) 001223MAN-05 Page 78 1-Jul-2017...

  • Page 79: Electrical Box Layout (460-3-60)

    Electrical Box Layout (460-3-60) 1-Jul-2017 Page 79 001223MAN-05...

  • Page 80: Wiring Diagram (220-1-50)

    Wiring Diagram (220-1-50) 001223MAN-05 Page 80 1-Jul-2017...

  • Page 81: Electrical Box Layout - Sizes 25-75 (220-1-50)

    Electrical Box Layout (220-1-50) 1-Jul-2017 Page 81 001223MAN-05...

  • Page 82: Tf Refrigeration Circuit - Air Heating Mode

    001223MAN-05 Page 82 1-Jul-2017...

  • Page 83: Tf Refrigeration Circuit - Air Cooling Mode

    1-Jul-2017 Page 83 001223MAN-05...

  • Page 84: Tf Refrigeration Circuit - Hydronic Heating Mode

    001223MAN-05 Page 84 1-Jul-2017...

  • Page 85: Dimensions: Tf-45 Left Return

    Dimensions: TF-45 Left Return 1-Jul-2017 Page 85 001223MAN-05...

  • Page 86: Dimensions: Tf-45 Right Return

    Dimensions: TF-45 Right Return 001223MAN-05 Page 86 1-Jul-2017...

  • Page 87: Dimensions: Tf-55/65/75/80 Left Return

    Dimensions: TF-55/65/75/80 Left Return 1-Jul-2017 Page 87 001223MAN-05...

  • Page 88: Dimensions: Tf-55/65/75/80 Right Return

    Dimensions: TF-55/65/75/80 Right Return 001223MAN-05 Page 88 1-Jul-2017...

  • Page 89: Warranty

    Should the installer be unavailable, contact any MG recognized distributor, dealer or service organization. If assistance is required in obtaining warranty performance, write or call: Maritime Geothermal Ltd • Customer Service • PO Box 2555 • Petitcodiac, New Brunswick E4Z 6H4 • (506) 756 8135 • or e-mail to info@nordicghp.com NOTE: Some states or Canadian provinces do not allow limitations on how long an implied warranty lasts, or the limitation or exclusions of consequential or incidental damages, so the foregoing exclusions and limitations may not apply to you.

This manual is also suitable for:

Tf-55Tf-65Tf-75Tf-80

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