Nordic R Series Installation And Service Manual
Liquid to air single-stage r410a
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- Page 1 Installation and Service Manual R/RH-Series Liquid to Air Heat Pumps Single-Stage R410a Model Sizes 09-24 Maritime Geothermal Ltd. info@nordicghp.com P.O. Box 2555, 170 Plantation Road www.nordicghp.com Petitcodiac, NB E4Z 6H4 002512MAN-01 (506) 756-8135 11-May-2021 Page 1 002512MAN-01 11-May-2021...
- Page 2 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 APPLICATION TABLE MODEL OUTDOOR SERIES FUNCTION REFRIGERANT VOLTAGE COMPRESSOR FAN/CASE REVISIONS SIZE COIL SDELT SDERT SDELT SDERT SDELT SDERT SDELT SDERT SDELT SDERT SDELT SDERT SDELT SDERT SDELT SDERT This manual applies only to the models and revisions listed in this table. Maritime Geothermal Ltd.
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Page 4: Table Of Contents
Table of Contents Tables, Figures, & Documents ......... 5 Startup Procedure ............27 R/RH-Series System Description Pre-start Inspection ............... 27 ......6 Unit Startup ................28 General Overview ..............6 Startup Record ..............29 1. Heating Mode ..............6 2. Cooling Mode ..............6 General Maintenance .......... -
Page 5: Tables, Figures, & Documents
Tables, Figures, & Documents Tables Table 1 - Heat Pump Size vs. Heated Area for a Ground Loop System ..........7 Table 2 - Heat Pump Size vs. Heated Area for an Open/Building Loop System ........7 Table 3 - Plenum Heater Sizing ....................... 7 Table 4 - Power Supply Connections (Heat Pump) ................ -
Page 6: R/Rh-Series System Description
The plenum heater accessory is available in source heat pumps. different sizes to provide either full backup or partial auxiliary The residential NORDIC R/RH product line, with premium heat. features expected in a central heating/cooling system, runs from If a closed ground loop is used, 230v circulation pumps size 25 to 80. -
Page 7: R-Series Sizing
R/RH-Series Sizing Heat Pump Sizing least in northern climates). Hence, the Standard Capacity Rat- ings for Ground Loop Heating should apply in all northern cli- The following table is a rough guideline as to the size of mates. Conversely, the Standard Capacity Ratings for Ground space each heat pump size can handle for ground loop (closed Water (open loop) heat pumps assume a well water temperature loop) installations. -
Page 8: Installation Basics
Installation Basics Unpacking the Unit right, or back sides. Raising the indoor unit off the floor a few inches is generally a good practice since this will prevent rusting When the heat pump reaches its destination it should be of the bottom panel of the unit from concrete floors, and deaden unpacked to determine if any damage has occurred during vibrations. -
Page 9: Air Outlet Orientation
Air Outlet Orientation Air Return Orientation The heat pump can be ordered as left or right air return For vertical R-series units, the air discharge location is in a from the factory. This must be specified at time of order as the fixed position, blowing upwards. -
Page 10: Wiring
Unlike other NORDIC model series, there is no dedicated Move the fork terminal with the yellow and purple wire to terminal strip for circulator pump connection in the heat pump,... -
Page 11: Domestic Hot Water (Desuperheater)
Safety Controls TABLE 8 - Control Board Fault Codes The heat pump has two important built in safety controls Fault LED Flashes which are designed to protect the unit from situations which could damage it should the operation of the refrigeration circuit High Pressure fall outside the allowable operating range. -
Page 12: Piping
Piping Condensate Drain The unit comes equipped with one 3/4” female PVC socket or 3/4” PVC female NPT drain connection. This drain allows the condensate which forms during the air conditioning cycle to be removed from the unit. The drain should be connected and vented as per local codes. -
Page 13: 002513Pdg - Typical Loop Connections
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Page 14: Ductwork
Ductwork Blower Motor Duct Systems - Grill Layout The indoor unit is equipped with a direct drive 5-speed Most forced air heating systems have the floor grills placed ECM blower. See Wiring chapter for description and airflow around the perimeter of the room. Supply grills should be adjustment. -
Page 15: 001201Cdg - Typical Duct And Condensate Connections
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Page 16: Duct Sizing Guide
TABLE 10 - 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 17: Ground Loop Installations
Ground Loop Installations Refer to diagrams 000608INF & 000609INF at the end of Once the lines have been filled and no more air bubbles are this section for typical ground loop configurations. They are for appearing in the line, adjust the circulator pump module valves reference only, and should not be used to replace formal train- to circulate water through the heat pump using the same ing and computerized loop design. -
Page 18: Adding Antifreeze Solution
When using alcohols, be sure to inject below the water Unlike other NORDIC model series, low pressure control line to reduce initial volatility of the pure antifreeze. If the selection for open loop for the R/RH 09-24 is done manually, loop is large it may be necessary to refill the tank with antifreeze with a wire jumper. -
Page 19: 000608Inf - Typical Horiz. Ground Loop Configuration
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Page 20: 000609Inf - Typical Vert. Ground Loop Configuration
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Page 21: 000906Cdg - Circulator Pump Module Installation
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Page 22: 002336Pdg - Pump Module Inst - 2 Units On 1 Loop
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Page 23: Open Loop Installations
Open Loop Installations Well Water Temperature feet (9 feet). If the intake of a larger pump could be placed so that a further pumping fluid level drop of 9 feet could be The temperature of the well water should be a minimum of achieved (total 18 feet), it can be assumed that the flow would 41°F (5°C), and should normally be 45°F+ (7°C+). -
Page 24: Water Valve
(1” NPT to barb) Unlike other NORDIC model series, low pressure control selection for open loop for the R/RH 09-24 is done manually, with a wire jumper. For open loop (fresh water) operation, make sure a jumper is not connected between LP1 and LP2 on the heat pump’s terminal strip. -
Page 25: Water Flow Control
Water Flow Control Plumbing the Heat Pump A flow restricting (‘Dole’ or ‘Hays’) valve is highly recom- The port connections for the Outdoor Loop are 1/2” or mended, installed downstream of the water valve. This is a 3/4” brass FPT fittings. They are marked as OUTDOOR IN passive (non-electrical) device which automatically varies the and OUT. -
Page 26: 000619Inf - Ground Water Disposal Methods
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Page 27: Startup Procedure
Startup Procedure The Startup Record located in this manual is used in conjunction with this startup procedure to provide a detailed record of the installation. A completed copy should be left on site, a copy kept on file by the installer and a copy should be sent to Maritime Geo- thermal Ltd. -
Page 28: Unit Startup
Unit Startup The unit is now ready to be started. The steps below outline the procedure for starting the unit and verifying proper operation of the unit. It is recommended that safety glasses be worn during the following procedures. Preparation: 1. -
Page 29: Startup Record
Startup Record: R-Series Size 09-24 R410a Installation Site Startup Date Installer City Company Province Model Country Serial # Customer Name Customer Phone # Check boxes unless asked to record data. Circle data units. PRE-START INSPECTION Ductwork Ductwork is completed, dampers/ diverters are adjusted Registers are open and clear of objects Air filter and end cap are installed Condensate Drain is connected, properly vented and free of debris... -
Page 30: 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 31: Troubleshooting Guide
Troubleshooting Guide The following steps are for troubleshooting the 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 refrigeration circuit diagrams can be found later in this manual. - Page 32 FAULT CODE TROUBLESHOOTING Fault Possible Cause Verification Recommended Action Fault Code 1 High operating refrigerant Using a refrigeration gauge set, veri- See “High Discharge Pressure” in (High Pressure pressure fy that high pressure approaches or Heating Mode / Cooling Mode Control) exceeds 565psi with compressor on.
- Page 33 COMPRESSOR TROUBLESHOOTING Fault Possible Cause Verification Recommended Action Compressor will Faulty Measuring from C on the terminal Replace control board control board not start strip, verify there is voltage at Y, HP1, HP2, LP1, LP2, and both flow pins but no voltage present at CC. Faulty run capacitor Check value with capacitance meter.
- Page 34 OPERATION TROUBLESHOOTING - HEATING MODE Fault Possible Cause Verification Recommended Action High Discharge Low airflow See Fan Troubleshooting section Correct the problem. Pressure TXV adjusted too far Verify superheat. It should be be- Adjust TXV to obtain 8-12°F closed tween 8-12°F (3-6°C). Superheat will (3-6°C) superheat.
- Page 35 OPERATION TROUBLESHOOTING - HEATING MODE Fault Possible Cause Verification Recommended Action High Suction Leaking reversing valve Reversing valve is the same temper- Tap reversing valve, and switch it Pressure ature on both ends of body, com- back and forth between heating (may appear to mon suction line is warm, compres- and cooling positions.
- Page 36 OPERATION TROUBLESHOOTING - COOLING MODE Fault Possible Cause Verification Recommended Action High Discharge Unit is overcharged High subcooling, low delta T across Remove 1/2lb of refrigerant at a pressure (Only possible if unit has water coil. time and verify that the discharge been field serviced and pressure reduces.
- Page 37 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 can provide only a cer- and return ducts at the unit, it in tain amount of torque, according heating mode, it should not be to the speed SP1/SP2/SP3/SP4...
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Page 38: Repair Procedures
Repair Procedures Pumpdown Procedure 1. Connect the refrigerant recovery unit to the heat pump’s internal service ports via a refrigeration charging manifold and to a recovery tank as per the instructions in the recovery unit manual. Plan to dispose of refrigerant if there was a compressor burnout. -
Page 39: Compressor Replacement Procedure
Compressor Replacement Procedure 1. Pump down the unit as per the Pumpdown Procedure above. If there was a compressor burn out (motor failure), the refrigerant cannot be reused and must be disposed of according to local codes. 2. Disconnect piping. 3. -
Page 40: Model Specific Information
Model Specific Information Table 15 - Shipping Information Table 14 - Refrigerant Charge MODEL Refrigerant Oil Type WEIGHT DIMENSIONS in (cm) MODEL lb. (kg) R-09 0.86 R410a R-12 0.91 R410a R-09 161 (73) 25 (64) 28 (71) 48 (122) R-18 R410a R-12 166 (75) -
Page 41: Pressure Drop Data
Pressure Drop Data Table 17: Loop Pressure Water 104°F Water 50°F 15% Methanol 32°F 35% prop. glycol 32°F Drop Data 0.09 0.13 R-09 0.16 RH-09 0.19 0.22 0.25 0.09 0.13 0.16 R-12 RH-12 0.19 0.22 0.25 0.16 0.19 0.22 R-18 0.25 RH-18 0.28... -
Page 42: Standard Capacity Ratings
Standard Capacity Ratings Standards C13256-1 / ISO13256-1 / ARI 13256-1 Table 18 - Standard Capacity Ratings - Ground Loop Heating* 60Hz EAT 68°F (20°C) ELT 32°F (0°C) * 15% NaCl by Weight Ground Loop Fluid Nominal Pressure Input Liquid Flow Airflow Capacity Model... -
Page 43: Performance Tables: R-09
Performance Tables R/RH-09-HAC-P-1L R410a, 60 Hz, GKS086 OUTDOOR LOOP* ELECTRICAL INDOOR LOOP Evap. Flow Delta T Heat Abs. Compressor Fan** Input Cond. Airflow Delta T Heating (°F) Temp. (gpm) (°F) (°F) (Btu/hr) Current (A) Power (W) (°F) Temp. (cfm) (°F) (°F) (Btu/hr) 6,334... -
Page 44: Performance Tables: R-12
Performance Tables R/RH-12-HAC-P-1L R410a, 60 Hz, GKS102 OUTDOOR LOOP* ELECTRICAL INDOOR LOOP Evap. Flow Delta T Heat Abs. Compressor Fan** Input Cond. Airflow Delta T Heating (°F) Temp. (gpm) (°F) (°F) (Btu/hr) Current (A) Power (W) (°F) Temp. (cfm) (°F) (°F) (Btu/hr) 8,397... -
Page 45: Performance Tables: R-18
Performance Tables R/RH-18-HAC-P-1L R410a, 60 Hz, GJS151 OUTDOOR LOOP* ELECTRICAL INDOOR LOOP Evap. Flow Delta T Heat Abs. Compressor Fan** Input Cond. Airflow Delta T Heating (°F) Temp. (gpm) (°F) (°F) (Btu/hr) Current (A) Power (W) (°F) Temp. (cfm) (°F) (°F) (Btu/hr) 10,359... -
Page 46: Performance Tables: R-24
Performance Tables R/RH-24-HAC-P-1L R410a, 60 Hz, GJS208 OUTDOOR LOOP ELECTRICAL INDOOR LOOP Evap. Flow Delta T Heat Abs. Compressor Fan* Input Cond. Airflow Delta T Heating (°F) Temp. (gpm) (°F) (°F) (Btu/hr) Current (A) Power (W) (°F) Temp. (cfm) (°F) (°F) (Btu/hr) 13,256... -
Page 47: Electrical Specifications
Electrical Specifications Electrical Specifications Out- Max. Min. Power Supply Compressor door Fuse/ Wire TABLE Elec. Circ. Breaker Size Code V-ø-Hz Max A Amps Amps Amps 208/230-1-60 10.0 #14-2 R/RH-09 265/277-1-60 #14-2 208/230-1-60 10.0 11.4 #14-2 R/RH-12 265/277-1-60 #14-2 208/230-1-60 11.5 13.3 #12-2 R/RH-18... -
Page 48: Wiring Diagram (208/230-1-60)
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Page 49: Wiring Diagram (265/277-1-60)
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Page 50: Refrigeration Circuit - Heating Mode
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Page 51: Refrigeration Circuit - Cooling Mode
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Page 52: Dimensions: R-09/12 Left Return
Dimensions: R-09/12 Left Return 11-May-2021 Page 52 002512MAN-01... -
Page 53: Dimensions: R-09/12 Right Return
Dimensions: R-09/12 Right Return 11-May-2021 Page 53 002512MAN-01... -
Page 54: Dimensions: R-18/24 Left Return
Dimensions: R-18/24 Left Return 11-May-2021 Page 54 002512MAN-01... -
Page 55: Dimensions: R-18/24 Right Return
Dimensions: R-18/24 Right Return 11-May-2021 Page 55 002512MAN-01... -
Page 56: Dimensions: Rh-09/12 Left Return
Dimensions: RH-09/12 Left Return 11-May-2021 Page 56 002512MAN-01... -
Page 57: Dimensions: Rh-09/12 Right Return
Dimensions: RH-09/12 Right Return 11-May-2021 Page 57 002512MAN-01... -
Page 58: Dimensions: Rh-18/24 Left Return
Dimensions: RH-18/24 Left Return 11-May-2021 Page 58 002512MAN-01... -
Page 59: Dimensions: Rh-18/24 Right Return
Dimensions: RH-18/24 Right Return 11-May-2021 Page 59 002512MAN-01... -
Page 60: Warranty
LIMITED WARRANTY MARITIME GEOTHERMAL LTD. warrants that its commercial geothermal heat pumps shall be free from defects in materials and workmanship for a period of ONE (1) YEAR after the date of installation or for a period of ONE (1) YEAR AND SIXTY (60) DAYS after the date of shipment, whichever occurs first.
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