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RS Residential Manual - Nordic Geothermal Heat Pump

Contents

1. Page 35 Capacity dn RIS e M CEU Rd AREE Page 37 Ili Ai Ti S omm Page 43 Electrical Diagrams 208 230 1 60 Page 44 Retrigeration Circuit Diagrams uu u kapa 46 Case Details Size 25 to 45 Page 48 Case Details Size 55 to 80 U U Page 49 APPENDIX A CONTROL BOARD SPECIFICATIONS PAGE 50 WARRANTY INFORMATION uuu u a u 52 001229MAN 03 Page 4 DATE 15 DEC 2013 Tables Diagrams and Drawings TABLES Table 1 Power Supply Connections U Page 6 Table 2 Control Signal Description U U U Page 7 Table 3 Air Handler Control Signals U U Page 6 Table 4 Control Board Fault Codes U U
2. Field RS Series Electrical Box Diagram Wiring 208 230 1 60 Single Two Stage Scroll ECM Fan Modular Design 24VAC 52 2 Low Voltage Wiring 24VAC 100 Plenum Heat Tools Thermoststat Wiring Connections AR De Use an 18 8 7 for 1 stage conductor cable Connect the CD Airflow mrs Control Board eight Thermostat Connections in the electrical box to the Reduction lt corresponding letters on the thermostat Connections 2 24VAC Common O D G Fan We DD Y1 Stage1 Heat Cool Compressor On Off 100 24 Thermostat 2 Low L Trouble Indicator Connections Y 3 Flow W2 Stage3 2 for 1 stage Heat Plenum Heater Cooling Reversing Valve G D 2 Stage2 N A for 1 stage Heat Cool 52 Solenoid e Airflow Reduction Wiring Use an 18 2 conductor cable to connect Electrical Box 10 dry contacts Fan speed will be reduced by 15 for zone applications EDO Plenum BOO FY Fw Heat Air Handler Plenum Heat Wiring AM Relay Relay Relay Relay Relay Use an 18 4 conductor cable to connect this connections Q Q unit to the Air Handler LL ML NL m m 2 a 4 2 4 2 amp 4 2 gt 4 2 4 F Air Handler 24VAC hot wire E 5212 21
3. 11 Plenum Heater Optional uu uuu Page 11 DUCE SIZING 13 SPLIT SYSTEM REFRIGERANT CONNECTIONS 8 CHARGINGQG PAGE 14 Compressor Unit to Air Handler Refrigerant Piping 0 0 000001111111 Page 14 pL 14 Silver Soldering PIPINO MATE Mas AE Page 14 Pressure Tosting 14 THE uu 14 arie The SyS i p Page 14 GROUND WATER SYSTEM PAGE 15 General 15 Plumping 116 Heat PUM uuu uuu Page 15 ID 15 Water Discharge Methods 15 GROUND LOOP SYSTEM INFORMATION PAGE 18 Circulator dido wawa Page 18 Fiushing amp P rging Ih
4. 05542557 Installation and Service Manual RS Series Modular Design Split System Compressor Unit Two Stage R410a Model Sizes 25 75 Liquid to Air Split System Compressor Unit Ai CERTIFIED www ahridirectory org US Maritime Geothermal Ltd Email info nordicghp com P O Box 2555 Web www nordicghp com Petitcodiac N B 42 6H4 Document Number 001229MAN 03 Ph 506 756 8135 ECO 000215 REVISION DATE 15 DEC 2013 N SAFETY PRECAUTIONS N WARNING Ensure all access panels are in place and properly secured before applying power to the unit Failure to do so may cause risk of electrical shock WARNING Before performing service or maintenance on the heat pump system ensure all power sources are DISCONNECTED Electrical shock can cause serious personal injury or death WARNING Heat pump systems contain refrigerant under high pressure and as such can be hazardous to work on Only qualified service personnel should install repair or service the heat pump CAUTION Safety glasses and work gloves should be worn at all times whenever a heat pump is serviced A fire extinguisher and proper ventilation should be present whenever brazing is performed CAUTION Venting refrigerant to atmosphere is illegal A proper refrigerant recovery system must be employed whenever repairs require removal of refrigerant from the heat pump MODEL NOMENCLATURE RS 65 HACW P
5. Page 7 Table 5 Heat Pump Size vs Heated Area for Ground Loop Systems Page 10 Table 6 Heat Pump Size vs Heated Area for Ground Water Systems Page 10 7 Air FloW Page 10 Table 8 Air Coil Volumes U u Page 11 Table 9 Heat Pump Size vs Hot Air Grills Page 11 Table 10 Duct Sizing GUIOBE oiii 13 Table 11 POM 5265 uU IIIa uds 14 Table 12 Required Flow and Air Tank Sizing 1 Page 15 Table 13 Antifreeze Percentages by Volume U eens enne nnne 19 Table 14 Volume of Fluid 1001 Of Pipe Page 19 Table 15 Refrigerant Charge Chart U Page 35 Table 16 Shipping LLL LLULLU IILI sassa E aa Eiai Page 35 Table 17 Standard Capacity Ratings Ground Loop Heating 60Hz Page 35 Table 18
6. Ls kw ww Stage1 680 320 935 20 300 59 847 217 Stage 1 1030 486 1 140 29 600 8 7 26 0 Stage2 1200 566 2 195 38 000 11 1 5 22 Stage 1 1240 585 1 640 38 500 11 3 6 87 23 5 Stage 2 1500 708 2 795 48 000 14 1 5 03 17 2 Stage 1 1540 727 2 110 48 100 14 1 6 68 22 8 1900 897 3 595 60 600 178 493 1660 783 55 000 161 6 30 21 0 2100 991 67 500 19 8 4 74 15 7 2400 1133 84 200 24 7 5 00 17 1 15 NaCl Weight Ground Loop Fluid REV 09 N Table 20 Standard Capacity Ratings Ground Water Cooling 60Hz 80 6 F 27 ELT 59 F 15 BTU H BTUM 680 320 705 23 000 6 7 32 7 800 378 1 280 29 600 1030 486 1 080 29 500 8 6 8 00 273 Stage 2 1200 566 1 930 40 000 11 7 6 06 20 7 Stage 1 1240 585 1 415 38 000 11 1 7 96 26 9 Stage 2 1500 708 2 385 51 600 15 1 6 34 21 8 1540 727 1 765 48 500 142 8 09 27 5 1900 897 2 960 64 500 18 9 6 36 166 748 783 2 305 56 500 1660 2100 991 3 710 72 000 REV 09 001229MAN 03 Page 36 DATE 15 DEC 2013 CAPACITY RATINGS Heating Mode R 25 HACW P 1T Nominal 2 ton 410 60 Hz USGPM F BTU Hr Amps Watts L s Watts 7 0 20 4 6 6 73 1 497 26 0 1 460 6 7 73 1
7. Rs ris Geddes Petitcodiac NB GEOTHERMAL mo Chris Geddes 25 FEB 10 CT II ewm Name Modular RS Series Refrigeration Circuit Diagram Heating Mode Size Drawing Number Drawing SHEET 001233RCD 001229MAN 03 Page 46 DATE 15 DEC 2013 000215 C GEDDES C GEDDES 15 DEC 2014 25 FEB 10 ECO IMPL BY APVD BY DATE REFRIGERATION CIRCUIT DIAGRAMS continued Modular RS Series Refrigeration Circuit Cooling Mode AIR HANDLER Vapour Line Equalizer Port Cooling RS UNIT Valve Valve NOTE Sight 4 way valve is Low Pressure Glass energized in omg Cut out 1 this mode Closed Loop DHW IN Low Pressure Cut out 2 1 Filter Open Loop Drier Service High B Pressure DHW OUT Bypass Optional Desuperheater Check Valve OUTDOOR OUT HREERENENIS o Condenser Compressor Accumulator lt OUTDOOR IN 170 Plantation Rd I 1I T Chris Geddes 1 1T T TOEI 000215 GEDDES C GEDDES 15 DEC 2014 282568 Initial Release C GEDDES C GEDDES 25 FEB 10 A d B ECO IMPL BY APVD BY DATE A 001234RCD 02 1 of 1 DATE 15 DEC 2013 Page 47 001229MAN 03 GEOTHERMAL esi Approved By ENG Daie Drawing Name Modular RS Series ons Geddes Refrigera
8. U Page 49 DRAWINGS 000970PDG Single Unit Connection to DHW Pre Heat Tank Brass Page 9 001230CDG Modular RS Series Split System Typical Duct and Condensate Connections Page 12 000907CDG Typical Ground Water Installation for Size 25 75 Heat Pumps Brass FPT Page 16 000619INF Ground Water Disposal Methods U U U 17 000906CDG Geo Flo Circulator Pump Module Installation Brass FPT Page 20 001235SCH RS HAC P 1 Schematic Diagram 2 44 001236ELB RS HAC P 1 Electrical Box Diagram 2 Page 45 001233RCD Modular RS Series Refrigeration Circuit Diagram Heating Mode Page 46 001234RCD Modular RS Series Refrigeration Circuit Diagram Cooling Mode Page 47 DATE 15 DEC 2013 Page 5 001229MAN 03 Installation Information UNIT DESCRIPTION RS Series unit is a high efficiency two stage compres sor unit for a split geothermal heat pump system Two stage units offer longer runtimes and fewer cycles resulting in higher efficiency and a higher comfort level The unit contains environ mentally friendly
9. C C L s C Watts Watts Watts 80 6 46 800 56 3 24 3 9 561 20 629 30 190 1 142 27 0 78 378 13 5 13 5 2 801 6 044 8 846 80 6 47 800 56 6 24 0 9 422 20 328 29 749 27 0 8 1 378 13 7 13 3 2 760 5 956 8 716 80 6 47 800 57 0 23 6 9 270 20 001 29 271 1 276 2701 8 3 378 13 9 13 1 2 716 5 860 8 576 80 6 47 800 58 4 22 2 8 716 18 805 27 521 1 27 0 85 378 14 7 12 3 2 554 5 510 8 064 80 6 48 800 59 0 21 6 7 041 17 951 25 792 1 27 0 8 7 378 15 0 12 0 2 297 5 260 7 557 80 6 48 800 59 5 21 1 7 679 17 580 25 258 27 0 8 9 378 15 3 11 7 2 250 5 151 7 401 80 6 49 800 59 9 20 7 7 507 17 187 24 694 27 0 92 378 15 5 11 5 2 200 5 036 7 235 80 6 49 800 60 4 20 2 7 326 16 774 24 100 1 648 14 1 88 105 7 0 97 0 9 0 29 958 27 0 9 4 378 15 8 11 2 2 147 4 915 7 061 31 1 40 6 0 442 36 1 5 0 8 778 Compressor ZPS20K5E PFV 37 3Pa 0 15inH20 Ext Static COPc L s C Watts 25 1 53 7 0 62 8 9 8 34 321 7 35 11 7 0 442 17 1 5 5 10 056 23 5 58 7 0 67 7 9 7 34 097 6 88 14 4 0 442 19 9 5 4 9 990 21 9 63 7 0 72 7 9 7 33 859 17 2 26 7 0 442 22 6 5 4 9 920 68 85 7 0 77 2 9 2 32 257 20 0 29 4 0 442 25 1 5 1 9 451 73 90 7 0 82 2 9 2 30 687 22 8 32 2 0 442 27 9 5 1 8 991 16 7 78
10. frosting up Random high pressure trip does not occur while on site Heating instead of cooling High Discharge pressure DATE 15 DEC 2013 ature on both ends of body com mon suction line is warm compres sor is running hot adjusted too far open stuck open Faulty heating T XV bypass check valve Leaking TXV stuck almost closed or partially blocked by for eign object Faulty compressor contac Intermittent fan Possible Cause Thermostat not set up properly Verify superheat It should be be tween 8 12 3 6 Superheat will be low if is open too far Adjusting the TXV does not affect the superheat or the suction pres sure Low super heat and discharge pressure Low superheat and discharge pres sure Switch to cooling mode Unit operates correctly Adjusting the TXV does not affect the superheat or the suction pres sure Points pitted or burned Contactor sometimes sticks causing the com pressor to run without the fan trip ping the high pressure control Adjust TXV to obtain 8 12 F 3 6 C superheat Adjust the TXV all the way and out a few times to loosen it Replace TXV if this does not work Try switching modes a few times Replace check valve if problem continues See Low Suction Pressure in this section Adjust the TXV all the way in and out a few times to loosen it Replace TXV if this does not work Repl
11. Outdoor In Supply In Outdoor Out Supply Out and Delta m Oo lt Compressor L1 black wire current Thermostat setpoint and discharge pressure at cycle end T peo kPa Cooling Mode Suction Pressure Discharge Pressure psig 10 minutes Duct Return Indoor Out and Delta T m Ot lt n Outdoor In Supply In Outdoor Out Supply Out and Delta T dn Thermostat setpoint suction and discharge pressures at cycle end psig A total of three copies are required one for the homeowner one for the installer and on to be sent to Maritime Geothermal Ltd DATE 15 DEC 2013 Page 23 001229MAN 03 General Maintenance GENERAL MAINTENANCE SCHEDULE Interval Procedure Contactor Inspect for pitted or burned points Replace if necessary Heat exchanger Clean as per HEAT EXHCANGER FLUSING PROCEDURE below Generally not required for closed loop systems Whenever system performance is reduced for open loop COAXIAL HEAT EXCHANGER FLUSHING PROCEDURE GROUNDWATER STEP 1 Isolate the heat exchanger by closing the valves in the IN and OUT ports the heat exchanger Blow out the heat exchanger into a clean 5 gallon bucket using compressed air If a purge cart is not available use a 5 gallon plastic bucket a circulator and some plastic piping to create a makeshift pump system Connect a the inlet and outlet to the heat
12. SAFETY CONTROLS The heat pump has two built in safety controls which are designed to protect the unit from situations which could damage it should the operation of the refrigeration circuit fall outside the allowable operating range A Low Pressure Control The low pressure control monitors the compressor suction pressure and will shut the compressor down if the refrigerant evaporating pressure becomes too low risking the danger of freezing conditions in the evaporator There are 3 main reasons why this control would activate in response to the operating conditions of the unit while operat ing in heating mode 1 Low or no Outdoor loop flow 2 Low Outdoor loop entering liquid temperature DATE 15 DEC 2013 Page 7 3 Dirty or fouled Outdoor loop heat exchanger B High Pressure Control The high pressure safety control monitors the compressor discharge pressure and will shut the compressor down if the condensing pressure becomes too high There are 3 main reasons why this control would activate in response to the operating conditions of the unit while operat ing in heating mode 1 Low or no airflow 2 High return air temperature 3 Dirty air coil due to poor filter maintenance The unit contains a control board that monitors the safety controls and operates the compressor accordingly Refer to APPENDIX A for control board specifications The low pressure control is connected to LP1 and LP2 The high
13. oo 2 30 224 3 79 4 N N 08 2 29 892 64 2 29 740 N N N N N co N B e 5 2 29 565 Ext Static 001229MAN 03 Page 42 DATE 15 DEC 2013 ELECTRICAL TABLES Table 21 Heat Pump Electrical Information 208 230 1 60 208 3 60 ERA Max A PALA Max A Amps Amps Amps s 40 a wa s ao Models are single stage Models are single stage Three 3 wire required if connecting 115VAC circulators to the Four 4 wire required if connecting 115 circulators to unit the unit 12 Table 23 Heat Pump Electrical Information 460 3 60 wa se wa Models are single stage Table 25 Heat Pump Electrical Information Table 26 Heat Pump Electrical Information 220 1 50 380 3 50 Outdoor Max Fuse Compressor LRA A Amps 52 4 0 15 1 17 7 4 0 5 7 _ _ _ _ _65_ 19 8 23 6 67 98 23 5 27 9 153 33 1 39 9 176 38 7 46 9 Models single stage Models are single stage DATE 15 DEC 2013 Page 43 001229MAN 03
14. voltage terminals marked j OUTDOOR CIRCULATORS in ee the heat pump electrical box J 3 way bu d a 2 Valve Valve NOTE 1 or 2 Basement Refer to the heat pump labels pump Wall for connection locations module HEAT PUMP CONNECTIONS 999 lt OUTDOOR IN Q lt SUPPLY Flexible Rubber copper or other suitable E OUTDOOR OUT piping 100 psig min 1 SUPPLY OUT gt Available Fittings l m 3144 1 Sweat optional P T Fill gap between a 2913 1 Barbed insulation and wall FPT Suitable 3072 1 with expanding foam Brass Fittings Adapter SIZE 25 to 80 1 NOTES Circulator Pump Module should be mounted vertically to minimize the possibility of air locking the circulators e All lines inside the structure and through the wall should be insualted with 3 8 to 1 2 thick closed cell pipe insulation e Holes through the foundation structure should be filled with expanding foam from both sides to prevent leakage e Proper drainage material should be used on the outside of the wall to prevent water buildup e Pump module fittings are available from Maritime Geothermal Ltd Geo Flo Part Numbers are indicated above italics e A pressure gauge is recommended if P T plugs are not installed e The air bladder tank should be pressurized to the desired static pressure of the ground loop before installation For most applications
15. 5 3 787 O gt Co 2 b 3 922 A O to 4 068 O Co 4 264 N e 2 x olol 4 364 Co N O 4 467 O gt 4 572 N R 75 HACW P 1T F E BTU Hr BIU Hr BTU Hr Watts Amps Watts EER T F USGPM F BIU Hr C 80 6 27 0 80 6 27 0 80 6 27 0 80 6 27 0 80 6 27 0 80 6 27 0 80 6 27 0 80 6 27 0 44 6 7 44 1 6 7 44 2 6 8 44 3 6 8 44 6 9 45 6 9 45 7 0 45 7 1 L s 2 100 991 2 100 991 2 100 991 2 100 991 2 100 991 2 100 991 2 100 991 2 100 991 C 152 155 15 7 15 9 15 7 16 0 16 3 16 6 Compressor ZPS60K5E PFV DATE 15 DEC 2013 C 11 8 11 5 11 3 11 1 11 3 11 0 10 7 10 4 Watts 7 043 6 908 6 767 6 667 6 400 6 247 6 089 5 926 Watts 14 967 14 679 14 381 14 167 14 113 13 776 13 427 13 067 Watts 22 011 59 9 20 7 23 576 50 099 73 675 21 586 21 148 60 6 20 0 22 755 48 353 71 108 20 834 60 3 20 3 21 843 48 167 70 010 20 513 60 8 19 8 21 321 47 017 68 338 20 023 61 3 19 3 20 782 45 828 66 610 19 517 18 993
16. 3 Verify that the loop contains the proper mix of antifreeze for the intended application Record the type of antifreeze and the mixture value on the startup sheet circle Vol or Weight 4 Record the static loop pressure on the startup sheet Outdoor Loop Ground Water 1 Verify there are no leaks in the connections to the unit Verify the water valve is installed and properly oriented in the return line 2 Verify that there is flow control in the return line Domestic Hot Water if equipped 1 Verify that all shutoff valves are fully open and there are no restrictions in the piping from the heat pump to the domestic hot water tank 2 Verify that the entire system has been flooded and all the air has been purged as much as possible Further purging may be required after the system has been operating for a while 3 Verify that the brown wire with the insulated terminal is disconnected in the electrical box Refer to the schematic diagram for more information Electrical 1 Ensure the power to the unit is off Ensure the power to the plenum heater is off if equipped 2 Verify all high voltage connections Ensure that there are no stray wire strands all connections are tight and the ground wire is connected tightly to the ground connecior for the compressor unit air handler and plenum heater 3 Record the fuse circuit breaker size and wire gauge for the compressor unit Record the fuse circuit breaker size wire gauge and s
17. 1 pump module will accomodate model sizes 09 to 45 and a 2 pump module will accomodate sizes 55 to 80 The total loop pressure drop including the headers inside piping and heat exchanger drop should be calculated based on the antifreeze mixture and lowest desired entering water temperature The pump module selected must provide the required flow at this calculated pressure drop value CIRCULATOR PUMP MODULE 3 WAY VALVE POSITONS LEFT SIDE VIEW 1 Valve in Loop fill purge position 2 Valve in HP fill purge position 3 Valve in normal running position Ground Loo Ground Loop Ground Loop Purge Cart m 3 1 Heat Pump Heat Pump Heat Pump 170 Plantation Rd Chri 5 Geddes Y j Checked GEOTHERMAL Drawing Name Geo Flo Circulator Pump Module GEDDES 21 MAY 2013 Installation Brass FPT Initial Release 09 DEC 2008 Size Drawing Number Drawing SHEET ECO 4 IMPL BY APVD BY DATE A 000906PDG 02 1 of 1 001229MAN 03 Page 20 DATE 15 DEC 2013 Approved By ENG Chris Geddes Approved By MFG Approved By Startup Procedure The following steps describe how to perform the startup procedure of the geothermal heat pump system The startup procedure for the air handler should be performed before this startup procedure is performed The RS Series Two Stage R410a Startup Record located in this manual is used i
18. 24x32 26x30 804 32 22x40 24x38 26x34 28 32 9200 804 32 22x40 24x38 26x34 28x32 9800 98 34 24x42 25 40 26 38 28 34 908 34 25 40 26 38 28 34 2x4 30 36 32 34 33 33 3042 32 38 34 36 35 35 30x45 34 40 36x38 37x37 DATE 15 DEC 2013 13 gt lt gt lt j N Return Air Airflow Diameter in J A 001229MAN 03 Split System Refrigerant Connections amp Charging COMPRESSOR UNIT TO AIR HANDLER REFRIGERANT PIPING WARNING THE COMPRESSOR UNIT COMES A WITH REFRIGERANT DO NOT THE PORT VALVES UNTIL THE AIR HANDLER AND INTER CONNECT PIPING HAVE BEEN VACCUUMED The ports on the RS unit have an access valve with a copper cap installed in the flare nut These valves are closed when unit is shipped A short length of pipe with flared end for each connection is supplied with the RS unit Remove the caps and install the pipe stubs use refrigeration oil on both sides of the flare on the stubs Tighten the flare nuts Piping between the compressor unit and the air handler consists of two lines a vapour line and a liquid line Refer to TABLE 11 for the sizing of each line Run the piping as required between each unit Refer to drawing 001230CDG WARNING THE AIR HANDLER 1 MOUNTED HIGHER ELEVATIO
19. Standard Capacity Ratings Ground Water Heating 60Hz Page 35 Table 19 Standard Capacity Ratings Ground Loop Cooling 60HZ Page 36 Table 20 Standard Capacity Ratings Ground Water Cooling 60Hz Page 36 Table 21 Heat Pump Electrical Information 208 230 1 60 Page 43 Table 22 Heat Pump Electrical Information 208 3 60 Page 43 Table 23 Heat Pump Electrical Information 460 3 60 Page 43 Table 24 Heat Pump Electrical Information 575 3 60 Page 43 Table 25 Heat Pump Electrical Information 220 1 50 Page 43 Table 26 Heat Pump Electrical Information 380 3 50 Page 43 DIAGRAMS Diagram A Typical P T Pete s Plug amp Thermometer Stem 1 Page 18 Diagram B Typical Purge Cart uuu uu sees hine DR cu va Ren E Ne Page 18 Case Details Size 2510 45 Page 48 Case Details Size 55 to 80
20. When snow comes it will usually cover the entire process much like a small spring It is recommended that the pipe be below the frost line when possible for maximum freeze protec tion When discharging into a river or stream or above the surface of a pond the same guidelines should be followed as described in the paragraph above for the percolation method When discharging the waste water below the surface of a pond the discharge pipe should be placed below the frost line to prevent the pipe from freezing As opposed to the percola tion method water will remain in the end of the pipe It is rec ommended that the surface of the pond be lower than the instal lation location of the heat pump where practical This reduces the back pressure generated by the weight of the water in the Typical Ground Water Installation for Size 25 75 Heat Pumps for Units With Brass FPT Fittings TACO 24VAC EBV Electronic Ball Valve NOTE Refer to the heat pump labels HEAT PUMP for connection locations CONNECTIONS Connect the harness plug to the connector inside the heat ELECTRICAL CONNECTOR 125psig PRV OUTDOOR OUT SUPPLY OUT 57 1 Brass FPT P T Plugs OUTDOOR IN SUPPLY IN 1 Brass FPT 1 Line v Ea 1 Ball Valve It is recommended that either unions or boiler drains be installed to provide connection points for flushing the coaxial exchanger should it need to be cleaned due to scaling C WIY E E
21. 1 T C xx Series Revision RS Active Cooling Liquid to 01 02 etc Air Split System Outdoor Loop Exchanger Nominal Size C Copper 25 2 Z Cupro Nickel CuNi 45 Ton 55 4 2 Compressor Stages 65 5 S 1 Stage on 2 52 in 575 3 60 stage unless unavailable due to voltage code refer to the Electrical Tables Functions 4 H Heating AC Active Cooling Voltage Code W Domestic Hot Water 1 230 1 60 VAC 2 208 3 60 VAC 4 460 3 60 5 575 3 60 VAG 6 220 1 50 7 380 3 50 Refrigerant P 410 001229 0 2 DATE 15 DEC 2013 APPLICATION TABLE FUNCTION REFRIGERANT VOLTAGE STAGES OUTDOOR COIL REVISIONS HACW HACW N C1 O O CO O O O O O O O O O O This manual applies only to the models revisions listed this table MATCHING AH SERIES AIR HANDLER TABLE VERTICAL 45 MATCHING AH SERIES AIR HANDLER TABLE VERTICAL 25 02 SDETV 02 MATCHING AH SERIES AIR HANDLER TABLE CUBIC ra DATE 15 DEC 2013 001229MAN 03 25 45 55 65 75 Table of Contents TABLES DIAGRAMS amp
22. 16 8 412 57 024 4 830 1 060 5 1 16 708 16 8 46 5 62 791 4 908 1 060 8 1 18 397 16 8 51 8 68 924 4 985 2 400 106 4 38 4 87 458 1 060 11 0 20 195 1 133 41 3 21 3 25 625 16 8 57 0 75 450 5 058 2 400 1093 41 3 94 236 18 9 10 0 1 060 13 9 22 107 1 133 43 0 23 0 27 611 55 ZP70KWE PFV 49 7Pa 0 20inH20 Ext Static CFM oF oF BTU Hr Watts 2 400 92 8 24 8 56 598 1 133 33 8 13 8 16 583 2 400 95 1 27 1 61 795 1 133 35 1 15 1 18 106 2 400 97 5 29 5 67 279 1 133 36 4 16 4 19 713 2 400 99 2 31 2 71 219 1 133 37 4 17 4 20 867 2 400 100 9 32 9 75 029 1 133 38 3 18 3 21 983 2 400 103 6 35 6 81 064 1 133 39 8 19 8 23 752 O Hm 00 9 A cO I S NIN CO oO Co O O O O e N O O Co O17 amp O N o R 80 HACW P 1S m wasta BTU Hr BTU Hr Watts Amps Watts EER USGPM BTU Hr C 1 5 sQ Watts Watts 80 6 44 5 2 400 56 4 24 2 29 318 60 890 90 208 3 081 1 27 0 6 9 1 133 13 6 13 4 8 590 17 841 26 431 80 6 45 1 2 40
23. 86 0 30 0 90 9 32 7 95 8 35 5 6 2 11 1 6 2 11 0 6 1 10 8 6 0 11 1 6 2 11 0 6 1 10 9 6 1 10 8 6 0 Watts 77 969 22 845 77 594 22 735 77 174 22 612 75 547 22 135 73 856 21 640 73 315 21 481 72 743 21 314 72 145 21 138 Ext Static DATE 15 DEC 2013 CAPACITY RATINGS continued Heating Mode R 75 HACW P 1T Nominal 6 ton R410a 60 Hz USGPM L s 16 0 1 009 16 0 1 009 16 0 1 009 16 0 1 009 16 0 1 009 16 0 1 009 16 0 1 009 16 0 20 6 10 0 1 009 Compressor ZPS60K5E PFV 22 9 5 0 28 4 2 0 33 9 1 1 39 3 4 1 44 1 6 7 49 5 9 7 54 8 12 7 60 1 15 6 BTU Hr Watts 38 593 11 308 42 497 12 452 46 404 13 596 90 856 14 901 55 258 16 191 60 316 17 672 65 697 19 249 71 411 20 923 C 92 6 33 6 94 5 34 7 96 6 35 9 98 9 37 2 2 100 100 7 991 38 2 2 100 103 2 991 39 5 2 100 105 8 991 41 0 2 100 108 6 40 6 87 893 991 42 6 22 6 25 752 49 7Pa 0 20inH20 Ext Static F 24 6 13 6 26 5 14 7 28 6 15 9 30 9 17 2 32 7 18 2 35 2 19 5 37 8 21 0 Watts BTU Hr Watts 52 075 15 258 56 292 16 493 60 659 17 773 65 609 19 223 70 689 20 712 76 088 22 294 81 818 23 973 O SIN 00 L O gt Co cO 3 695 2 100 991 2 100 991 2 100 991 2 100 991 N I O
24. Horizon Vertical cuin CC CC cuin 25 134 2196 TBD 143 2343 178 2917 4326 214 3507 283 4638 5768 285 4670 65 492 8062 440 7210 357 5850 75 492 8062 528 8652 428 7014 80 NA 605 9914 DUCT SYSTEMS GENERAL Ductwork layout for a heat pump will differ from traditional hot air furnace design in the number of leads and size of main trunks required Air temperature leaving the heat pump is normally 95 105 F 35 40 much cooler than that of a conventional warm air furnace To compensate for this larger volumes of lower temperature air must be moved and consequently duct sizing must be able to accommodate the greater air flow without creating a high static pressure or high velocity at the floor diffusers A duct system capable of supplying the required air flow is of utmost importance Maritime Geothermal Ltd recommends that the static pressure be kept below 0 2 inches of water total In some instances the number of floor diffusers will actually double when compared to the number that would be used for a hot air oil fired furnace Refer to TABLE 10 at the end of this section 1 Generally allow 100 cfm for each floor grill 2 All leads to the grills should be 6 in diameter 28sq in each 3 The main hot air trunks should be at least 7596 of the square surface area of leads being fed at any given point 4 Return air grills should have a minimum of the sa
25. has 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 Alternatively Grundfoss Model UPS 26 99 or Taco Model 0011 pumps or other brands with similar pumping capability may be used The single pump module will typically handle systems up to 3 tons model sizes 25 45 the two pump module will typically handle 4 to 6 ton systems model sizes 55 65 75 80 This is based on a typical parallel system with one circuit per ton Maritime Geothermal recommends calculating the total pressure drop of the ground loop including headers indoor piping and heat pump exchanger drop based on the antifreeze type and concentration at the desired minimum loop temperature A pump module that can deliver the flow required for the unit at the calculated total pressure drop should be selected Refer to the Model Specific Information section for unit flow requirements Loop pressure drops can be calculated using software such as those mentioned in the Horizontal Ground loops section or can be calculated in a spreadsheet using the pipe manufacturer s pressure drop tables for pipe diameter and fittings The circulator pump module must be connected to the heat pump Outdoor Loop ports with a lineset suitable for the flow required with minimum pressure drop 1 rubber or plastic lines should be used The installation of P T plugs pressure tempera
26. 1 Line NOTE Remove valve head and manually place Valve Etc the valve in the open position before soldering NOTE Dole valves can be quite noisy Placing a the optional ball valve approximately two feet from the Dole valve can reduce the noise level Alternately the Dole valve can be placed outside the home Dole Valve Recommended To for Flow Setting Second Well Field Ditch 1 Ball Pond optional Air Bladder Tank Pressure Pressure Gauge Switch 0 60PSIG From C Well Pump 125psig C PRV Air Bladder Tank Table HEAT PUMP Air Bladder Tank 5126 MODEL SIZE IGAL USGAL Litres To House Based on 2 minute well pump run time A larger tank may be used if a longer run time is desired TACO 24VAC Slow Close Water Valve Generic 24VAC Solenoid Water Valve Connect the harness plug to the connector inside the heat pump ELECTRICAL NOTE Remove the head from the valve before soldering the valve in place 4 BE NOTE Ensure the pin is installed in the proper orientation as shown here when re installing the head Connect the harness plug to the connector inside the heat pump ELECTRICAL CONNECTOR Piping is as shown above Chris Geddes 1 Chris Geddes Approved By Release T C GEDDES s DEC 08 SSS By 001229MAN 03 170 Plantation Rd Petitcodi
27. 28 5 15 8 31 3 17 4 33 4 18 6 35 6 19 8 1 200 566 5 1 D co JI Nx S A A N gt gt O N N R 45 HACW P 1T F 80 6 27 0 80 6 27 0 80 6 44 6 6 44 6 8 45 L s 1 200 566 1 200 566 sa 51 10 6 56 13 3 61 F F IBTU HrI BTU Hr BTU Hr Fe Watts Watts Watts 57 4 23 2 13 299 28 417 41 716 1 487 14 1 12 9 3 897 8 326 12 223 57 7 22 9 113 115 28 024 41 140 1 14 3 12 7 3 843 8 211 12 054 USGPM L s 10 0 0 631 10 0 0 631 10 0 60 5 9 5 oes 65 5 9 5 18 6 5 3 70 4 9 4 Watts Watts EER COPc 25 4 7 44 23 3 BTU Hr Watts 47 375 13 881 47 222 13 836 Amps 99 171 O D gt 1 2 27 0 80 6 27 0 80 6 27 0 80 6 27 0 80 6 27 0 80 6 27 0 122 46 7 6 46 19 47 8 3 48 8 6 48 8 9 1 200 566 1 200 566 1 200 566 1 200 566 1 200 566 1 200 566 14 4 14 7 14 8 15 0 192 15 5 Compressor ZPS30K5E PFV 001229MAN 03 12 6 12 3 12 2 12 0 11 8 11 5 58 0 22 6 12 968 3 800 3 727 58 7 21 9 12 344 3 617 59 0 21 6 12 165 3 564 59 4 21 2 11 9
28. 45 1 7 3 45 4 7 4 45 7 7 6 46 7 8 46 7 9 47 8 1 47 8 3 L s 1 900 897 1 900 897 1 900 897 1 900 897 1 900 897 1 900 897 1 900 897 1 900 897 mm C C 96 0 24 6 Watts 19 665 13 3 13 7 5 762 56 4 24 2 19 362 13 5 13 5 5 673 96 8 23 8 19 043 13 8 13 2 5 580 57 5 23 1 18 462 14 2 12 8 5 409 98 0 22 6 18 682 14 4 12 6 5 474 58 5 22 1 18 309 14 7 12 3 5 365 58 9 21 7 17 919 15550 A 5250 59 4 21 2 17 512 15216 15 191 Compressor ZPS51K5E PFV 001229MAN 03 Watts 49 095 14 385 48 337 14 163 47 942 13 930 46 091 13 504 43 99 12 833 42 926 12 577 42 012 12 309 41 056 12 029 Watts 68 760 L 67 698 19 835 66 585 19 509 64 553 18 914 62 481 18 307 61 235 17 942 59 931 17 560 58 567 3 653 17 160 2 373 10 8 2 574 11 6 gt 2 777 9 I9 d an N 21 42 2 325 25 8 7 56 23 6 21 7 A 16 1 4 71 14 8 Page 40 49 L s 14 0 60 1 11 1 9 4 54 12 2 59 15 0 64 17 8 70 21 1 75 23 9 80 26 7 85 29 4 0 883 14 0 0 883 14 0 0 883 14 0 0 883 14 0 0 883 14 0 0 883 14 0 0 883 14 0 0 883 49 7 0 20 0 20 15 6 65 1 18 4 70 0 21 1 74 8 23 8 81 1 27 3
29. 526 31 6 6 9 374 1 597 39 8 1 633 0 442 7 4 50 9 1 716 0 442 10 5 34 6278 50 56 3 6 7 8 73 1 764 105 11 37 1 29 123 17 2 10 0 0 442 13 5 37 III I 378 406 206 8 533 Compressor ZPS20K5E PFV 37 3Pa 0 15inH20 Ext Static x Tl Tl BTU Hr Watts 89 3 21 3 17 019 31 8 11 8 4 987 90 9 22 9 18 355 32 7 12 7 5 378 92 7 247 19 776 33 7 13 7 5 794 94 9 26 9 21 555 35 0 15 0 6 315 97 9 29 9 23 469 36 6 16 6 6 876 100 2 32 2 25 236 37 9 17 9 7 304 102 6 34 6 27 119 39 2 19 2 7 946 B 8E N ot 2 2 158 o gt J N N N N 1 N n N Co 1 556 To gt 011 1 N N i N Co Co N AI N Ta Ol amp N gt je N N N gt P P gt 1 R 25 HACW P 1T S ALI BTU Hr BTU Hr Watts Amps Watts EER USGPM BTU Hr
30. 95 7 0 87 2 9 2 30 450 4 89 25 6 35 0 0 442 30 6 5 1 8 922 15 4 83 100 7 0 92 1 9 1 30 206 28 3 37 8 0 442 33 4 5 0 8 850 C1 O Co N gt O gt Co CO 2 oO Co 6 o d LA N 6 O gt O Co Co cO O Co DATE 15 DEC 2013 37 001229MAN 03 CAPACITY RATINGS continued Heating Mode R 45 HACW P 1T Nominal _ 410 60 2 Tl USGPM L s 10 0 0 631 10 0 0 631 10 0 0 631 10 0 0 631 10 0 0 631 10 0 0 631 10 0 83 7 28 7 86 3 30 2 89 0 31 7 91 5 33 1 94 3 34 6 96 4 35 8 99 6 37 6 oF BTU Hr Watts 26 396 7 734 28 290 8 289 30 291 8 875 33 196 9 726 36 401 10 665 38 873 11 390 41 467 12 150 276 44 21005 2045 88 179 221 375 120 33 2 63 1 200 38 7 3 1 200 43 4 63 1 200 48 9 6 1 30 329 2417 10 2 179 2 572 4 43 63 1 200 545 65 32 592 2514 10 6 179 2669 455 64 1 200 50 10 0 60 0 7 0 34 965 2615 11 1 179 2 770 4 67 65 1 200 103 0 38 0 44 185 19 4 100 0 631 15 6 39 10 245 183 566 39 4 21 1 12 946 55 ZPS30K5E PFV 37 3Pa 0 15inH20 Ext Static N alo 22 7 12 6 24 3 13 5 26 0 14 5
31. Action Fault Code 1 Faulty High Pressure Con Verify if there is 24VAC across HP1 Replace high pressure control if High Pressure trol open on the control board and C of the voltage is present on HP1 but not Control Must be a signal present terminal strip as well HP2 and on HP2 on 1 for this test HP pressures must be at static levels Faulty control board 24VAC is present across HP1 Replace control board C1 and HP2 and C but no voltage is present across CC on the control board and C Fault Code 2 Faulty Low pressure con Verify if there is 24 across LP1 Replace high pressure control if Low Pressure trol open on the control board and C of the voltage is present on LP1 but not Control Must be a signal present terminal strip as well as LP2 and LP1 on Y1 for this test HP pressures must be at static levels Faulty control board 24VAC is present across LP1 and C Replace control board and LP2 and C but no voltage is present across CC on the control board and C Unit out of refrigerant Check static refrigeration pressure Locate the leak and repair it of the unit for a very low value opray nine a sniffer and dye are common methods of locating a leak Fault Code 3 Flow switch jumper re Verify jumper is in place between Place a jumper if missing Flow Switch moved or faulty pins marked FLOW SWITCH Flow switch faulty Verify 24VAC is present betwe
32. Domestic Hot Water Tank 170 Plantation Rd Petitcodiac NB E4Z 6H4 Single Unit Connection to DHW Pre Heat Tank Brass FPT Size Drawing Number REV SHEET 001229MAN 03 Sizing and Ductwork SPLIT SYSTEM HEAT SIZING TABLE 5 depicts a rough guideline as to the size of home each compressor unit and matched air handler can handle for ground loop installations TABLE 5 Heat Pump Size vs Heated Area for a Ground Loop System e TABLE 6 depicts a rough guideline as to the size of home each compressor unit and matched air handler can handle for ground water installations TABLE 6 Heat Pump Size vs Heated Area for a Ground Water System THE TABLES ABOVE ARE FOR INFORMATION ONLY THEY SHOULD NOT BE USED TO SELECT A UNIT SIZE They simply show on average what size unit is required for a typical two level home main level and below grade basement with R 20 walls R 40 ceiling and average size and number of windows The Heated Area is the area of the main level The tables account for a basement the same size as the heated ar MARITME GEOTHERMAL LTD HIGHLY RECOMMENDS THAT A PROPER HEAT LOSS GAIN ANALYSIS BE PER FORMEDE BY A PROFESSIONAL INSTALLER WITH CSA APPROVED SOFTWARE BEFORE SELECTING THE SIZE OF UNIT REQUIRED FOR THE APPLICATION For heating dominant areas we recommend sizing the unit to 100 of the heating design load for maximum long term efficiency wi
33. If either switch is open after the delay expires the compressor will not energize Output either switch opens while the compressor is energized it will ce irmmeciately and begin the anti short cycle delay Type Solid state Triac Ihe compressor will not be allowed to on again until the Rating 30 VAC anti short cycle delay expires and both pressure switches are Fault closed The flow switch will have 30 second bypass timer in Type Relay SPDT N O which the control will ignore an open flow switch for the first 30 EXE mm 23m X PA seconds if the flow switch remains open after the 30 second Rating 1 amp 30 timor expires the unit will de energize the compressor Time Delay and begin the anti short cycle delay the control experiences Antl short cycle time S rmminutes fixed 2096 three high pressure low pressure or fow switch faults in a 60 test mode Minute period it will lockout the compressor and energize the fault manual reset Of power will be required to reset Mechanical Tociout coneinon Board dimensions 3 5 x 3 25 x 1 control has a status LED to indicate which type of Fault or Mounting Surface mount using 4 6 or 8 screws lockout has occurred If pressure Fault or lockout occurs tre 4tatus LED wil blink once Ir a pressure fault orc lockout occurs the status LED
34. L s 1 500 708 1 500 708 1 500 708 1 500 708 1 500 708 1 500 708 1 500 708 1 500 708 C 14 6 58 7 14 8 59 1 195 1 59 5 15 3 15 7 159 61 1 16 1 61 6 16 4 Compressor ZPS40K5E PFV DATE 15 DEC 2013 Watts 12 4 4 955 21 9 16 606 12 2 4 866 21 5 16 289 11 9 4 773 21 1 15 993 11 7 4 686 11 3 4 901 11 1 4 808 10 9 4 691 19 0 15 594 10 6 4 569 Watts 10 587 35 484 10 397 34 806 10 198 34 173 10 013 9 514 9 333 9 106 30 270 8 869 Watts 14 415 60 6 20 0 16 409 31 853 48 262 14 141 13 796 45 864 13 438 58 3 22 3 16 911 36 135 53 046 1 993 8 5 2 605 2 924 39 192 2 151 C L s 24 7 51 70 12 0 60 2 20 4 16 727 32 470 49 197 2 455 11 0 192 2 614 11 6 192 2 764 19 5 16 009 31 077 47 087 2 761 12 3 13 0 192 2 920 16 1 14 9 81 27 2 37 8 0 757 86 30 0 C 21 1 0 757 100 12 0 105 40 6 12 0 0 757 37 3Pa 0 1 2 12 0 66 0 7 11 193 299 0757 7 11 164 267 0757 sat 294 0757 61 1 16 2 18 9 70 9 21 6 75 8 24 3 81 2 27 3 86 1 30 1 91 0 32 8 99 9 35 5 001 Watts 10 1 60 504 56 17 727 10 0 60 047 20 733 9 9 59 555 5 5 17 449 9 8 58 920 5 5 17 263 10 2 58 230 5 17 061 10 1 57 809 5 6 16 93
35. Potential Relay faulty Single phase only Compressor is tight due to damaged mechanism Faulty Stage 2 module Replace with new one and verify compressor starts properly Compressor attempts to start but trips its internal overload after a few seconds Run capacitor has been verified already Verify if 24VAC is present across Y2 and C of the terminal strip Page 27 Replace if faulty Attempt to rock compressor free If normal operation cannot be es tablished replace compressor Replace module if signal is pre sent Check wiring if signal is not present 001229MAN 03 OPERATION TROUBLESHOOTING HEATING MODE Faut Cause Verification Recommended Action High Discharge Pressure Low Suction Pressure 001229MAN 03 Air Flow See Fan Troubleshooting section Correct the problem TXV adjusted too far closed Verify superheat It should be be tween 8 12 F 3 6 Superheat will be high if TXV is closed too far Adjust TXV to obtain 8 14 F 3 8 C superheat TXV stuck almost closed or partially blocked by for eign object Faulty cooling TXV bypass check valve blocked Adjusting the TXV does not affect the superheat or the suction pres sure TXV may be frosting up High superheat Temperature drop can be felt across the cooling TXV Unit operates properly in cooling mode Adjust the TXV all the way in and out a few times to loosen it R
36. and air flow are good but suction is low Check static refrigeration pressure of unit for very low value Try switching modes a few times Replace check valve if problem continues Remove 1 2lb of refrigerant at a time and verify that the discharge pressure reduces Adjust to obtain 8 12 F 3 6 C superheat Adjust the TXV all the way in and out a few times to loosen it Replace TXV if this does not work Replace reversing valve Correct the problem Adjust the TXV all the way in and out a few times to loosen it Replace TXV if this does not work Identify the check valve Try switching modes a few times Re place if problem continues Locate the leak and repair it Spray nine a sniffer and dye are common methods of locating a leak Pressures change only slightly from Replace compressor static values when compressor is started Compressor See Low Suction frosting up Pressure in this section TXV frosting up eign object Random Low contactor Pressure trip does not occur while there Intermittent fan 001229MAN 03 TXV stuck almost closed or partially blocked by for Faulty compressor Adjusting the TXV does not affect the superheat or the suction pres sure Points pitted or burned Contactor sometimes sticks causing the com pressor to run without the fan trip ping the low pressure control Adjust the TXV all the way in and out a few times to loosen it R
37. and replace the filter drier STEP 7 Charge the unit a final time Unit should now be clean and repeated future burn outs can be avoided 001229MAN 03 Page 34 DATE 15 DEC 2013 Model Specific Information This section provides general information particular to each model document for the desired model For complete specifications please see the specifications REFRIGERANT CHARGE CHART SHIPPING INFORMATION Table 15 Refrigerant R410a 5 0 2 3 7 5 3 4 Table 16 Shipping Information 260 118 34 TBD 34 System contains POE oil NOTE The charge may vary slightly depending on the air handler and how far away it is from the compressor unit STADARD CAPACITY RATINGS The tables below depict the results of standard capacity rating tests according to C13256 1 which is identical to ISO13256 1 Stage 1 values do not apply to single stage units Refer to the Electrical Tables to determine which models are single stage 8 0 3 6 5 9 6 1 34 86 w Table 17 Standard Capacity Ratings Ground Loop Heating 60Hz STAGE 1 ELT 41 F 5 C EAT 68 F 20 STAGE 2 ELT 32 F 0 C Tons USGPM Ls PSI kPA crm us Watts kw ww 1095 16 300 48 436 7 0 0 44 10 0 0 e N 1500 1540 1900 N N 16 0 1 01 2100 2400 4 235 15 7 4 940 18 4 3 70 3 73 REV 09 80 16 8 1 07 15 NaCl by Weigh
38. circulate fluid at a velocity of at least 2 ft min through all parts of the loop DIAGRAM B Typical Purge Cart Adjust the circulator pump module valves to connect the purge cart to the ground loop Begin pumping water through the ground loop ensuring that the intake of the pump stays submerged at all times by continuously adding water Water flowing back from the return line should be directed below the water level in the barrel or flush tank to prevent air being mixed with the outgoing water 18 DATE 15 DEC 2013 Once lines have been filled and more air bubbles are appearing in the line adjust the circulator pump module valves to circulate water through the heat pump using the same technique as described above When all air is removed reverse the flow of water through the lines by interchanging the flush cart lines and purge again You will be able to visibly tell when all air is removed ADDING ANTIFREEZE SOLUTION In most mid and northern areas of the US and in all of Canada it is necessary to condition the loop fluid by the addition of some type of antifreeze solution so that it will not freeze during operation in the winter months This antifreeze is required because the loop fluid will normally reach a low entering temperature of 28 F to 32 F 2 C to 0 C and refrigerant temperatures inside the heat pump s heat exchanger may be as low as 20 F 11 C cooler See TABLE 13 for details of freeze protection
39. compressor noise emitted from the bottom of the cabinet ELECTRICAL CONNECTIONS The heat pump has a concentric 1 093 0 875 knockout for power supply connection to the electrical box as well as one for connection to the circulator pump module for ground loop applications There are two 1 2 openings with plastic grom mets grommet hole is 3 8 in the upper section of the electrical box one for the thermostat connections and one for the option al plenum heater connections A schematic diagram SCH and electrical box layout diagram ELB can be found inside the electrical box cover of the unit as well as in the Model Specific section of this manual The Electrical Tables in the Model Specific section and the ELB diagram contain information about the size of wire for the con nections as well as the recommended breaker size Connec tions are as per TABLE 1 NOTE A properly qualified electrician should be retained to make the connections to the heat pump and associated controls The connections to the heat pump MUST CON FORM TO LOCAL CODES 001229MAN 03 Page 6 TABLE 1 Power Supply Connections Voltages 208 230 1 60 208 3 60 460 3 60 575 3 60 380 3 50 Only required if connecting 115VAC circulators to the heat pump for 208 230 1 60 and 208 3 60 models the heat pump itself does not require a neutral Required for all other listed voltages CONTROL TRANSFORMER The low voltage controls for volta
40. exchanger ports Place 2 gallons of RYDLYME in the purge cart or bucket Circulate the fluid through the heat exchanger for at least 2 hours 3 recommended Disconnect the purge system dispose of the solution RYDLYME is non toxic and biodegradable and as such can be poured down a drain Connect fresh water and a drain to the heat exchanger ports and flush the exchanger for several minutes Return the plumbing to its original configuration and open the IN and OUT valves Operate the system and check for improved performance STEP 2 STEP 3 STEP 4 STEP 5 STEP 6 STEP 7 Depending on the plumbing there should be either unions or boiler drains for to access the heat exchanger COAXIAL HEAT EXCHANGER FLUSHING PROCEDURE GROUND LOOP STEP 1 Isolate the heat exchanger by placing the pump module valves in the exchanger flushing position Connect a compressed air and a drain pipe to the pump module purge ports and blow the anti freeze solu tion into a clean 5 gallon bucket Connect a purge cart to the pump module purge ports Place 2 gallons of RYDLYME in the purge cart Circulate the fluid through the heat exchanger for at least 2 hours 3 recommended Disconnect the purge cart and dispose of the solution RYDLYME is non toxic and biodegradable and as such can be poured down a drain Clean the purge cart thoroughly Connect fresh water and a drain to the pump module purge ports and flush the exchanger for several minutes S
41. it is run dry for even a short period of time Connect the brown or black wire with the blue insulated terminal to L1 of the compressor contactor fuse terminal for 575 3 60 units Ensure the power is off when connecting the wire DHW loop may have to be purged of air several times before good circulation is obtained A temperature difference between the DHW In and DHW Out can be felt by hand when the circulator pump is operating properly For the pre heat tank setup the final tank should be set to 140 60 The pre heat tank does not require electric ele ments This setup takes full advantage of the desuperheater as it is the sole heat provider to the pre heat tank The desuper heater remains active during the compressor runtime until the pre heat tank has been completely heated by the desuperheater alone This setup is more energy efficient than a single tank setup CAUTION If two 2 shut off valves are located the domestic hot water ines as shown in the diagram a pressure relief valve must be installed to prevent possible damage to the domestic hot water circulator pump should both valves be closed 001229MAN 03 Page 8 DATE 15 DEC 2013 Single Unit Connection to Domestic Hot Water Tank Brass HEAT PUMP CONNECTIONS DHW OUT 1 2 Refer to pump labels for connection locations DHW IN 1 2 1 2 Port Conf
42. valves then shut off and disconnect the vacuum pump Place a refrigerant tank with the proper refrigerant on a scale and connect it to the charging manifold Purge the hose to the tank label on the unit or the Refrigerant Charge Chart in the MODEL SPECIFIC INFORMATION section for the STEP 4 Weigh in the appropriate amount of refrigerant through the low pressure suction service port Refer to the proper charge amount STEP 5 If the unit will not accept the entire charge the remainder can be added through the low pressure service port after the unit has been restarted REPLACMENT PROCEDURE FOR A COMPRESSOR BURN OUT STEP 1 Pump down the unit as per the Pump Down Procedure above Discard the refrigerant according to local codes STEP 2 Replace the compressor Replace the liquid line filter drier STEP 3 Vacuum the unit until it remains under 500 microns for several minutes with the vacuum pump valve closed STEP 4 Charge the unit with NEW REFRIGERANT and operate it for continuously for 2 hours Pump down the unit and replace the filter drier Vacuum the unit until it remains under 500 microns for several minutes with the vacuum pump valve closed STEP 5 Charge the unit refrigerant can be re used and operate it for 2 3 days Perform an acid test If it fails pump down the unit and replace the filter drier STEP 6 Charge the unit refrigerant can be re used and operate it for 2 weeks Perform and acid test If it fails pump down the unit
43. wil blink twice If a flow swith fault occurs the status LED wil blink three times Dimensions Wiring Diagram 2 s Che 7 4 i 2 e 11 ia Hee m CHO m 8 Dm 5025 wet reo CE m cao T pg s BIT cr En d re CE M i 9 a lt 4 M 1725 T fh 21 i e 1 ds ai ua C LG L STATUS C A Contactor 3000 0107 LR Flow Flow Switch 001229MAN 03 Page 50 DATE 15 DEC 2013 THIS PAGE INTENTIONALLY LEFT BLANK DATE 15 DEC 2013 Page 51 001229MAN 03 del LIMITED EXPRESS WARRANTY eE ti is expressly understood that unless a statement is specifically identified as a warranty statements made by Maritime Geothermal Ltd a corporation registered in New Brunswick Canada or its representatives relating to MG s products whether oral written or contained in any sales literature catalogue or agreement are not express warranties and do not form a part of the basis of the bargain but are merely MG s opinion or commendation of MG s products EXCEPT AS SPECIFICALLY SET FORTH HEREIN THERE IS NO EXPRESS WARRANTY AS TO ANY OF MG S PRODUCTS MG MAKES NO WARRANTY A
44. 0 56 6 24 0 29 075 60 387 89 462 23 4 52 80 16 8 270 73 1 133 13 7 13 3 8 519 17 693 26 212 6 86 11 1 26 7 1 060 17 9 6 8 30 215 80 6 45 8 2 400 56 8 23 8 28 842 59 903 88 744 3 512 19 5 22 0 57 85 168 693 27 0 7 7 1 133 13 8 13 2 8 451 17 551 26 002 13 9 29 4 1 060 20 7 6 8 80 6 46 5 2 400 57 2 23 4 28 443 59 074 87 517 20 3 62 90 16 8 74 3 27 0 8 1 1 133 14 0 13 0 8 334 17 308 25 642 16 7 32 2 1 060 23 5 6 8 30 142 80 6 47 2 400 57 2 23 4 27 062 58 850 85 912 4 71 95 16 8 83 8 12 8 102 28 27 0 8 4 1 133 14 0 13 0 7 929 17 243 25 172 21 7 35 0 1 060 28 8 7 1 29 970 80 6 48 2 400 57 6 23 0 26 694 58 048 84 742 76 100 16 8 88 8 27 0 8 8 1 133 14 2 12 8 7 821 17 008 24 829 24 4 37 8 1 060 31 5 7 1 80 6 48 2 400 58 0 22 6 26 222 57 022 83 243 16 0 81 105 168 93 7 27 0 91 1 133 14 4 12 6 7 683 16 707 24 390 4 70 27 2 40 6 1 060 34 3 7 1 806 49 2 400 58 4 22 2 25 700 55 887 81 587 4 950 2 148 86 110 16 8 98 6 27 0 94 1 133 14 7 12 3 7 530 16 375 23 905 30 0 43 3 1 060 37 0 7 0 Compressor ZP70KWE PFV 49 7 0 20inH2o oC s Watts L s 710 25 0 47 15 16 8 59 3 12 3 103 148 7 32 8 3 23 9 1 060 15 2 6 8 30 222 O a 4 N CO CO O1 C1 9
45. 14 the for approximate volume per 100 ft When the volume of the loop has been calculated and the appropriate amount of antifreeze is ready for addition by referencing TABLE 13 drain the equivalent amount of water from the flush cart or mixing barrel and replace it with the antifreeze DATE 15 DEC 2013 Page When using alcohols be sure to inject below the water line to reduce initial volatility of the pure antifreeze If the loop is large it may be necessary to refill the tank with antifreeze TABLE 14 Volume of fluid per 100 ft of pipe 1 1 2 9 2 of Pipe Copper Rubber Hose 1 3 4 IPS SDR11 2 3 1 IPS SDR11 Polyethylene 1 1 4 IPS SDR11 1 1 2 IPS SDR11 9 1 10 9 Other Item Volumes Heat Exchanger Average 1 2 1 5 5 7 Purge Cart Tank See cart manual TBD several times to get all the antifreeze into the loop Pump the loop for 5 to 10 minutes longer to ensure the remaining fluid has been well mixed INITIAL PRESSURIZATION At this point open all valves in the flow circuit and slowly close off the supply and return flush cart valves in a manner that leaves about 20 30 psig on the system If an air bladder expansion tank is used it should be charged to the above pressure before actual water pressure is put on the system Systems without an expansion tank will experience greater fluctuations in pressure between the heating and cooling seasons Causing pressure ga
46. 2013 Page In a typical new construction there should be one supply grill for every 100sq ft of area in the room When rooms require more than one grill they should be placed in a manner that pro motes even heat distribution such as one at each end of the room It is always a good idea to place a damper in each grill supply or place adjustable grills so that any imbalances in the heat distribution can be corrected The total number of supply grills available is based on the heat pump nominal airflow TA BLE 9 shows the number of grills available per split system size TABLE 9 Heat Pump Size vs Hot Air Grills Mode ofGrils G100c fm _ m Return grills should be mounted on the floor At minimum they should be the same size as the supply grill it is highly recommended that they be 2596 to 50 larger than the total supply They should be placed opposite the supply grills when possible to ensure distribution across the room For rooms re quiring more than one supply grill it may be possible to use one larger return grill if it can be centrally positioned opposite of the supply grills however it is preferred to have one return for each supply to maximize heat distribution across the room THERMOSTAT LOCATION Most homes are a single zone with one thermostat The ther mostat should be centrally located within the home typically on the main floor It should be placed away from any supply grills and shoul
47. 31 3 496 59 9 20 7 11 685 3 424 27 709 8 119 7 964 26 670 7 814 26 283 7 701 25 777 552 25 246 7 397 40 677 11 918 58 4 22 2 12 721 27 182 39 904 11 692 39 014 11 431 38 447 11 265 37 707 11 048 36 931 10 821 1 737 1 881 u 2 031 N 3 2 471 o In O cO 21 5 19 6 5 74 17 8 14 0 38 16 1 66 18 9 72 90 10 0 22 2 N N 25 0 82 27 8 87 30 6 26 7 85 29 4 0 631 10 0 0 631 32 2 95 35 0 100 37 8 105 40 6 0 631 10 0 0 631 10 0 0 631 10 0 0 631 37 3Pa 0 1 2 21 4 75 4 24 1 81 8 27 7 86 8 30 4 91 7 33 2 96 7 35 9 47 190 13 826 46 908 13 744 46 530 13 633 46 441 13 607 46 200 13 537 45 950 13 463 Ext Static 5 2 9 4 5 2 9 8 5 4 9 8 5 4 9 7 5 4 9 7 5 4 DATE 15 DEC 2013 CAPACITY RATINGS continued Heating Mode R 55 HACW P 1T Nominal 4 ton USGPM E BIU Hr Watts F BTU Hr la o m O gt Om o co CO E w 1 NI aA N Ol 20 0 L s 12 0 0 757 12 0 0 757 12 0 0 7
48. 52 211 212 2 Handler Circulation Fan Speed e 9 FY1 Air Handler Y1 Stage 1 Fan Speed 1 21 1 9 3 1 i ui FY2 Air Handler Y2 Stage 2 Fan Speed 5 FW2 W2 Backup Heat Fan Speed NOTE Use only F and FG for air handlers with single speed fan motors Use an 18 2 conductor cable to connect this unit to the Plenum Heater 1 SPST Dry Contacts to operate the Plenum Heater _ 208 230 24 Outdoor Circulator Pumps B Transformer REFER TO LABEL IN UNIT FOR MAX AMPS Connect 115VAC circulators to 115 e Connect 230VAC circulators to 230V Connect Gnd to Gnd Lug 208 230 115 5 Wire Colour Contactor 5 12 IMPORTANT NOTE gt 8 FOR 208 1 60 POWER Start E Field red wire is ini Capacitor Connect Gnd to Gnd Lu ne 77 OG connected to the 208 9 Irin terminal on the transformer 9 instead of the 240 Heat Pump Electrical Service Requirements 208 2 208 230 Single Phase 60 2 208 230 1 60 230 Model Min Circuit Min Wire TD Fuse or Size Ampacity Gauge Breaker 115VAC 25 19 10 3 30 45 29 8 3 40 L2 55 35 8 3 50 65 42 6 3 60 1 75 44 6 3 60 Domestic Hot Water Circulator Pump Instructions If heat pump is to be operated without the hot water circulator connected to the wate
49. 57 12 0 0 757 12 0 0 757 12 0 0 757 12 0 0 757 12 0 4101 eloj m olololo ol iolcolololo N 10 0 0 757 Compressor ZPS40K5E PFV R 55 HACW P 1T F F F C 22 0 5 4 27 8 2 3 33 2 0 7 38 7 3 7 43 4 6 3 48 8 9 3 54 1 12 8 59 4 15 2 BTU Hr Watts 26 809 7 855 29 763 8 721 32 940 9 651 36 095 10 576 39 435 11 554 43 264 12 676 47 338 13 870 51 663 15 137 BIU Hr 2 567 2 633 2 699 2 791 2 885 2 955 3 026 3 100 BTU Hr Watts b O gt Co cO Co O gt oO oO Co Co Co Co O gt Co EER Om T o 1 500 708 1 500 708 1 500 708 1 500 708 1 500 708 708 1 500 708 C 91 6 33 1 93 7 34 3 96 0 35 5 98 3 36 8 100 0 37 8 1 500 102 7 39 3 105 5 40 8 1 500 108 4 708 42 5 23 6 13 1 25 7 14 3 28 0 155 30 3 16 8 32 0 17 8 34 7 19 3 37 5 20 8 40 4 22 5 Watts 35 782 10 484 38 963 11 416 42 364 12 413 45 834 13 429 49 511 14 507 53 577 15 698 57 895 16 963 62 471 18 304 37 3Pa 0 15inH20 Ext Static USGPM JJ 9 o e L N F BIU Hr C 80 6 27 0 80 6 27 0 80 6 27 0 80 6 27 0 80 6 27 0 80 6 27 0 80 6 27 0 80 6 27 0 43 6 6 4 43 8 6 6 44 6 7 44 3 6 8 45 7 0 45 7 2 45 7 3 45 7 4
50. 59 4 21 2 24 039 51 083 75 123 2 991 13 1 19 Ld N 60 3 20 3 23 097 49 082 72 179 3 407 14 7 51 Co 62 83 gt cO 06 61 8 18 8 20 225 44 599 64 824 4 292 19 3 Page 41 COPc 20 4 18 9 18 0 3 16 0 4 70 14 9 13 7 C L s 22 0 52 70 16 0 11 1 57 75 16 0 13 9 62 73 22 8 78 95 16 0 25 6 35 0 1 009 83 28 3 88 31 1 85 16 7 26 7 1 009 1 C 21 1 1 009 23 9 80 1 009 16 0 90 32 2 16 0 1 009 100 37 8 105 40 6 16 0 1 009 16 0 1 009 62 9 17 1 67 8 199 22 6 16 0 77 6 19 4 29 4 009 25 3 84 0 28 9 88 9 31 6 93 8 34 3 98 7 37 0 49 7 0 20 2 C 10 9 10 8 10 7 11 0 10 9 10 8 10 7 Watts 86 865 25 451 86 123 25 234 85 342 25 005 6 0 6 0 39 10 6 84 654 5 9 24 803 83 917 24 587 82 973 24 311 82 003 24 027 81 008 23 735 Ext Static 6 1 6 1 6 0 39 001229MAN 03 CAPACITY RATINGS continued Heating Mode R 80 HACW P 1S Nominal 6ton R410a 60 Hz ower Consumption Sink Data Indoor Loop USGPM BIU Hr Watts L s Watts 16 8 19 9 40 320 4 366 1 060 6 7 11 814 16 8 25 3 45 235 4 449 1 060 3 7 13 254 16 8 30 7 50 440 4 531 1 060 0 7 14 779 16 8 36 2 I 53 978 4 649 1 060 2 4 15 815
51. 8 10 0 57 166 5 6 16 749 9 9 56 499 5 5 16 554 Ext Static 229MAN 03 CAPACITY RATINGS continued Heating Mode R 65 HACW P 1T Nominal 5 ton R410a 60 Hz CFM L min oF BTU Hr Watts USGPM F BTU Hr Amps Watts W W m 2 iu sa o4 60 a6 928 o 67 29 29 ii s 12421 87 ar wn Compressor ZPS51K5E PFV R 65 HACW P 1T F F CEM BTU Hr BTU Hr BTU Hr 300 300 300 300 3 573 3 903 4 144 4 353 Watts 3 56 4 16 4 62 5 08 68 20 0 68 20 0 68 20 0 68 EER cO cO cO oO Co cO N 1 900 N 1 900 1 900 897 1 900 897 1 900 897 1 900 897 1 900 897 1 900 897 90 6 32 6 92 4 33 6 94 3 34 6 96 9 36 1 99 0 37 2 101 4 38 5 103 9 39 9 22 6 12 6 24 4 13 6 26 3 14 6 28 9 16 1 31 0 1 2 33 4 18 5 35 9 199 43 391 12 713 46 866 13 732 50 495 14 795 55 440 16 244 60 717 17 790 65 344 19 146 70 253 20 584 106 6 38 6 175 456 41 4 21 4 22 108 49 7 0 20inH2o Ext Static USGPM F F BTU Hr C 80 6 27 0 80 6 27 0 80 6 27 0 80 6 27 0 80 6 27 0 80 6 27 0 80 6 27 0 80 6 27 0 44 8 7 1
52. DRAWINGS 5 INSTALLATION INFORMATION uuu uuu L PAGE 6 6 UNPACKING o 6 6 Electrical Connections Page 6 Control THANSIONMEGN ll u ix u u Page 6 Circulator Pump Module Wiring Ground Loop Only Page 6 Thermostat i uuu uuu uuu u u u a Page 6 Air 7 CONOIS a ee ee 7 Domestic Hot Water Connections Page 8 SIZING i 10 Split System Heat Pump SIZING uuu uk AA 10 Air Handler Selection and 91210095 asSSSSsasspusawkiraywawawaupuasuautlawqawsiaqawawqhypuwskuasmi aqa Page 11 DUCT SYStEMS General uuu Page 11 DUCT Systems GRIPE AYO UE Page 11 Thermostat
53. GAINST LATENT DEFECTS MG MAKES NO WARRANTY OF MERCHANTABILITY OF THE GOODS OR OF THE FITNESS OF THE GOODS FOR ANY PARTICULAR PURPOSE LIMITED EXPRESS RESIDENTIAL WARRANTY PARTS IMG warrants its Residential Class products purchased and retained in the United States of America and Canada to be free from defects in material and workmanship under normal use and maintenance as follows 1 Air conditioning heating and or heat pump units built or sold by MG MG Units for five 5 years from the Warranty Inception Date as defined below 2 Thermostats auxiliary electric heaters and geothermal pumping modules built or sold by MG when installed with MG Units for five 5 years from the Warranty Inception Date as defined below 3 Sealed refrigerant circuit components of MG Units which components only include the compressor refrigerant to air water heat exchangers reversing valve body and refrigerant metering device for ten 10 years from the Warranty Inception Date as defined below 4 Other accessories and parts built or sold by MG when installed and purchased with MG Units for five 5 years from the date of shipment from MG 5 Other accessories when purchased separately for 1 year from the date of shipment from MG IThe Warranty Inception Date shall be the date of original unit installation as per the date on the installation Startup Record or six 6 months from date of unit shipment from MG whichever c
54. GENCE OR IN STRICT LIABILITY LIMITATION OF LIABILITY MG shall have no liability for any damages if MG s performance is delayed for any reason or is prevented to any extent by any event such as but not limited to any war civil unrest government restrictions or restraints strikes or work stoppages fire flood accident shortages of transportation fuel material or labour acts of God or any other reason beyond the sole control of MG MG EXPRESSLY DISCLAIMS AND EXCLUDES ANY LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGE IN CONTRACT FOR BREACH OF ANY EXPRESS OR IMPLIED WARRANTY OR IN TORT WHETHER FOR MG s NEGLIGENCE OR AS STRICT LIABILITY WARRANTY PERFORMANCE Normally the dealer or service organization who installed the products will provide warranty performance for the owner 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 warranty gives you specific legal rights and you may also have other rights whi
55. L1 115VAC 115 Black Required Connections C G Room Thermostat Wiring RH Jumpe Wire L Single stage gt units only We O applicable for Y2 single stage units ND Outdoor Loop Circulator Pumps 7 S T Compressor Contactor NOTE Press black button on transformer to reset breaker if tripped Plenum Heater Wiring 1 FR Air Handler Wiring 2 2 Ww OFF Hot Water Limit p ECO IMPL BY APVD BY DATE 001229MAN 03 Yellow black stripe wire not b n placed for single stage units Compressor Stage 2 Coil Reversing Valve Coil Approved By Page 44 ELECTRICAL DIAGRAMS 208 230 7 60 RS Series Schematic Diagram 208 230 1 60 Single Two Stage Scroll ECM Fan Modular Design S Compressor N Connect the brown wire with the 3 n insulated terminal to the bottom left 5 5207 terminal of the contactor lc 4 11 marked once lines filled and purged The DHW ON OFF SWITCH can be used to enable a disable the pump Potential Relay WELL Electronic WELL LOOP Ball Valve Solenoid Valve Valve Whit
56. LL NOT IN ANY EVENT BE LIABLE UNDER THE TERMS OF THIS LIMITED WARRANTY UNLESS THIS INSTALLATION START UP RECORD HAS BEEN ENDORSED BY OWNER amp DEALER INSTALLER AND RECIEVED BY MG LIMITED WITHIN 90 DAYS OF START UP Limitation This Limited Express Residential Warranty is given in lieu of all other warranties If not withstanding the disclaimers contained herein it is determined that other warranties exist any such express warranty including without imitation any express warranties or any implied warranties of fitness for particular purpose and merchantability be limited to the duration the Limited Express Residential Warranty LIMITATION OF REMEDIES In the event of a breach of the Limited Express Residential Warranty MG will only be obligated at MG s option to repair the failed part or unit or to furnish a new or rebuilt part or unit in exchange for the part or unit which has failed If after written notice to MG s factory in Petitcodiac New Brunswick of each defect mal function or other failure and a reasonable number of attempts by MG to correct the defect malfunction or other failure and the remedy fails of its essential purpose MG shall refund the purchase price paid to MG in exchange for the return of the sold good s Said refund shall be the maximum liability of MG THIS REMEDY IS THE SOLE AND EXCLUSIVE REMEDY OF THE BUYER OR PURCHASER AGAINST MG FOR BREACH OF CONTRACT FOR THE BREACH OF ANY WARRANTY OR FOR MG S NEGLI
57. N THAN THE COMPRESSOR UNIT AN OIL TRAP MUST BE MADE FOR EVERY 10FT 3M OF VERTICAL DISTANCE TO ENSURE PROPER FLOW THROUGH THE SYSTEM SEE 001230CDG TABLE 11 Refrigerant Port Sizes 1 2 1 2 The tubing used for this procedure must be refrigeration tubing cleaned amp dehydrated suitable for the job Every effort must also be made to insure that the tubing does not become contaminated during installation We recommend that caps be placed on the open ends of tubing immediately after cuts are made and that these caps are only removed after all bends have been made and the pipe fixed in its permanent location ready to make the silver soldered joints It is very important to keep a refrigeration system perfectly clean and dry Removing the caps just prior to silver soldering will ensure minimum exposure to the humidity in the atmosphere PIPE INSULATION The piping between the compressor unit and the air handler should be insulated with 3 8 thick closed cell pipe insulation to prevent condensation and dripping onto floors or walls during the cooling season Ensure that any joints in the piping are left open and accessible for leak testing SILVER SOLDERING PIPING Once all piping has been routed insulated and fastened in place the connections to the heat pump ports can be made Remove the pressure from the air handler unit and cut the ends off of the Liquid and Vapour ports The piping can be connected to th
58. R410a refrigerant The unit has several key features that are described in the specifications document for the particular heat pump Please request a copy if desired or visit www nordicghp com UNPACKING THE UNIT When the heat pump reaches its destination it should be unpacked to determine if any damage has occurred during shipment Any visible damage should be noted on the carrier s freight bill and a suitable claim filed at once The heat pump is well constructed and every effort has been made to ensure that it will arrive intact however it is in the customer s best interest to examine the unit thoroughly when it arrives OPTIMUM PLACEMENT The placement of a the unit has negligible effects on the operation of the system The unit can be placed wherever it can most easily be connected to If possible the access panels should remain clear of obstruction for a distance of two feet to facilitate servicing and general maintenance DO NOT STACK UNITS ON TOP OF EACH OTHER The cases are not designed to hold the weight of another unit Stacking should only be done with a proper rack system able to hold a minimum of 2x the weight of the unit Raising the heat pump off the floor a few inches is generally a good practice since this will prevent rusting of the bottom panel of the unit We recommend that the heat pump be placed on a piece of 2 thick styrofoam The styrofoam will smooth out any irregularities in the cement floor and deaden any
59. TEP 7 Blow the heat exchanger out with compressed air as per STEP 2 and dump the water down a drain Connect the purge cart to the pump module purge ports Re fill and purge the heat exchanger with as per standard procedures the anti freeze from STEP 2 can be re used Disconnect the purge cart and set the pump module valves back to the original positions ol nl alal 9 9 9 9 9 cO gt STEP 10 Operate the system and check for improved performance Depending on the plumbing there should be either unions or boiler drains for to access the heat exchanger 001229MAN 03 Page 24 DATE 15 DEC 2013 Troubleshooting Guide The following steps are for troubleshooting the geothermal heat pump problem 15 with the domestic hot water the plenum heater proceed to those sections at the end of the troubleshooting guide Repair procedures and reference refrigeration circuit diagrams can be found at the end of the troubleshooting guide STEP 1 Verify that the display is present on the thermostat If it is not proceed to POWER SUPPLY TROUBLE SHOOTING otherwise proceed to STEP 2 STEP 2 Remove the door and electrical box cover and check to see if there is a fault code on the control board If there is record the fault code Turn the power off wait 10 seconds and turn the power back on Set the thermostat to call for heating or cooling depending
60. able methods for disposing of the waste water are listed below The waste water is clean the heat pump has no other effect than reducing the temperature of the water Refer to drawing 000619 for typical disposal method diagrams e Second well return well e Percolation Drain ditch leaching field e Pond river or stream ENSURE SELECTED METHOD CONFORMS TO LOCAL CODES 001229MAN 03 A return well should be minimum of 80 ft from the supply well for residential applications The water returned to the well will not necessarily be pumped into the same aquifer depend ing on underground conditions The return well must be able to supply at least the same quantity of water as the amount you wish to recharge into it If the static level level when not being pumped of a well is high 10 to 20 ft from the surface it may be necessary to place a well cap on the well to keep the return water from flowing out the top of the well This cap is commonly required since a certain amount of pressure is needed to force the return water back down the well if the static level is high Water discharged by percolation will generally soak into the ground within a distance of 50 to 100 ft If suitable care is taken to ensure that the drain pipe runs downhill and the end of the pipe is protected by a bale of hay or spruce bows etc the end of the pipe will not freeze as the pipe will empty out when the heat pump shuts off and the water valve closes
61. ac GEOTHERMAL mo Drawing Typical Ground Water Installation for Size 25 75 Heat Pumps Brass Size Drawing Number REV SHEET A 000907CDG 01 1 of 1 DATE 15 DEC 2013 GROUND WATER DISPOSAL METHODS Pressure Nordic Pitless Adaptor Water Table Pond Lake minimum 8Oft Stream Submersible Pump Nordic Pitless Adaptor Water Table minimum 8Oft Submersible Pump Pressure Pitless Adaptor Water Table Tile Field minimum 8Oft Submersible Ground Water Disposal Methods Size Drawing Number REV SHEET Sm z CED Mrd ris Geddes Petitcodiac NB MARITIME GEOTHERMAL mn 22 Chris_Geddes Drawina N swing Name Chris Geddes Approved By MFG Date GEDDES c GEDDES 04 FEB 08 I EV IMPL 3 DATE 15 DEC 2013 17 001229MAN 03 Ground Loop System Information Once the ground loop has been pressure tested and the header pipes have been connected to the circulator pump module the heat pump can be connected to the circulator pump module The port connections for the Outdoor Loop are 1 brass FPT fittings They are marked as OUTDOOR IN and OUT CIRCULATOR PUMP MODULE Maritime Geothermal Ltd
62. ace contactor See Fan Troubleshooting section Correct the problem OPERATION TROUBLESHOOTING COOLING MODE Verification Verify that there is 24VAC across O B W1 and C of the terminal strip when calling for cooling Recommended Action Correct thermostat setup Change to a different thermostat Faulty reversing valve so lenoid coil Faulty reversing valve Low or no Outdoor liquid flow Entering liquid tempera ture too warm Dirty or fouled coaxial heat exchanger typically for ground water unlikely for ground loop Verify solenoid by removing it from the shaft while the unit is running There should be a loud whoosh sound when it is removed A click can be heard when the coil is energized but the unit continues to heat instead of cool Delta T across the Outdoor Loop ports should be between 8 12 F 4 7 C or compare pressure drop to the tables for the unit Most likely caused by undersized ground loop Disconnect the water lines and check the inside of the pipes for scale deposits Page 29 Replace solenoid if faulty Replace reversing valve Determine the cause of the flow restriction and correct it Verify pumps are working for ground loop systems Verify well pump and water valve is working for ground water systems Verify the ground loop sizing In crease the size of the ground loop if undersized Have a qualified service technician backflush the coax
63. ages can be used The electrical box diagram on the electrical box cover provides a description of the signal connections as does TABLE 2 DATE 15 DEC 2013 TABLE 2 Control Signal Description Description 22 Fault 24VAC when fault condition Heat Pump Stage 3 auxiliary heat Emergency Heat 2 O Cooling Mode reversing valve connect dry contact Connect to 1 NOTE Some models are not available in two stage at the present time see Electrical Tables The Y2 signal is not used for these units Y or Y W Y AIR HANDLER CONNECTIONS The RS unit is designed to be the master of the split sys tem It provides control signals to the slave air handler as re quired for proper system operation The available connections are shown in TABLE 3 These are all dry contact connections meaning the control transformer for the RS unit and the air han dler remain isolated For multi speed or ECM fan motors all of the signals may be required For single speed fan motors only is required Refer to the electrical box diagram and schematic for more infor mation The air handler power supply is separate from the RS unit power supply and should be on it s own breaker TABLE 3 Air Handler Control Signals 24VAC Common Air circulation mode Stage 2 heat pump Auxiliary emergency heat Use Fa only if the air handler has a single speed fan Sins LN Fwe
64. backflush the coaxial exchanger Return air too cold TXV stuck almost closed or partially blocked by for eign object Low refrigerant charge Faulty heating TXV by pass check valve leaking Measure return air temperature Should be above 60 F 15 C Adjusting the TXV does not affect the superheat or the suction pres sure TXV may be frosting up High superheat Entering liquid temperature flow and entering air temperature are good but suction is low Check static re frigeration pressure of the unit fora very low value Also low discharge pressure Switch to cooling mode Unit operates cor rectly Restrict air flow temporarily until room comes up to temperature Adjust the TXV all the way in and out a few times to loosen it Replace TXV if this does not work Locate the leak and repair it Spray nine a sniffer and dye are common methods of locating a leak Identify the check valve Try switch ing modes a few times Replace if problem continues Faulty compressor not pumping Pressures change only slightly from static values when compressor is started Page 28 Replace compressor DATE 15 DEC 2013 OPERATION TROUBLESHOOTING HEATING MODE Fault _ Possible Cause Verification Recommended Action High Suction Leaking reversing Reversing valve is the same temper reversing valve Pressure may appear to not be pumping Compressor frosting up
65. ch vary from state to state and from Canadian province to Canadian province Please refer to the MG Installation Installation and Service Manual for operating and maintenance instructions An extended warranty option is also available Please contact Maritime Geothermal Ltd via the contact information in the previous paragraph for more information QE ZZ UEEZEKM ZZI KI Y IYE H2 Z U 2
66. charge pressures when the unit shuts off Final Inspection 1 Turn the power off to the unit and plenum heater if installed and remove all test equipment 2 Install the electrical box cover and the access panel on the heat pump Install the service port caps securely to prevent refrigerant loss Install the electrical cover on the plenum heater if applicable 3 Do a final check for leaks in the ground water ground loop system and ensure the area is clean 4 Turn the power on to the unit and the plenum heater if installed Set the thermostat to the final settings Startup Record 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 001229MAN 03 Page 22 DATE 15 DEC 2013 Startup Record RS Series Size 25 75 Two Stage R410a Instone pome me T Check boxes unless asked to record data Circle data units PRE START INSPECTION Water Circuit breaker or fuse size and wire gauge for Heat Pump Circuit breaker or fuse size wire gauge and Plenum Heater size A Ga x Low voltage connections are correct and securely fastened STARTUP DATA Heating Mode Suction Pressure Discharge Pressure 10 minutes Duct Return Duct Supply and Delta T JF
67. cted air handler for information on sizing and installing a plenum heater 11 001229MAN 03 Typical Split System Duct and Condensate Connections Modular Case Hot Air Out Supply Cold Air In Return Hot Air Out Supply Flexible Duct Collar minimum lt 12 above plenum heater elements if installed Flexible Duct Collar Option 1 Ducts should be sized as per the Duct Sizing table in this manual Accoustic insulation may be used inside the ducts near the unit to dampen any air noise that may be present Ensure there is no insulation within 12 of the plenum heater if installed eke Te ma 75 styrofoam 45 55 Minimum decline of Optional Electric Plenum Heater Internally Mounted Flexible Duct Collar Option 2 Air filter Filter Rack Can be mounted to the left or right Condensate Drain 3 4 PVC Socket Must be externally trapped Venting may be required refer to local building code VEM Floor Drain 65 1 8 per foot 75 80 Use either regrigeration tubing or Type K copper only Place an oil trap in each line at every 10ft 3M of vertical run zam Prater RE ris Geddes Petitcodi NB LLL Xm GEOTHERMAL 22 25 Drawing Name Typical Split System Duct and Approved By ENG Date Chris Geddes MFG Date Conden
68. d overload Faulty overload Reset thermal overload Replace if faulty DOMESTIC HOT WATER DHW TROUBLE SHOOTING Fault Possible Cause Verification Recommended Action Insufficient hot Thermostat on hot water Visually inspect the setting Readjust the setting to 120 F water tank set too low Should 140 F if required by local code Tank Problem be set at 120 F 140 F if required by local code Breaker tripped or fuse Check both line and load sides of Replace blown fuse or reset blown in electrical supply gt If switch is open determine breaker to hot water tank why Reset button tripped on Check voltage at elements with Push reset button hot water tank multimeter Insufficient hot Circulator pump not Visually inspect the pump to see if Replace if faulty water operating shaft is turning Use an amprobe to Heat Pump measure current draw Problem Blockage or restriction Check water flow and power to Remove obstruction in water the water line or hot water pump Check water lines for lines Acid treat the domestic hot heat exchanger obstruction water coil Faulty DHW cutout failed Check contact operation Should Replace DHW cutout if faulty open close at 120 F and open at 140 F Heat pump not running Note the amount of time the heat Temporarily turn up the tank enough hours to make pump runs in any given hour thermostats until colder weather sufficien
69. d Fault Codes x L eL Low Pressure Flow WARNING If the control board enters permanent lockout mode there is serious problem with the system and it must be rectified if the unit is to maintain good service WARNING REPEATED RESETS A LOW PRES SURE LOCKOUT COULD CAUSE THE HEAT EX CHANGER TO FREEZE AND RUPTURE DESTROYING THE HEAT PUMP AND VOIDING THE WARRANTY 001229MAN 03 DOMESTIC WATER CONNECTIONS The port connections for the DHW circuit are 1 2 brass FPT fittings They are marked DHW IN and DHW OUT A typical piping diagram for a pre heat tank configuration can be found in 000970PDG at the end of this section Be sure to note the position of the check valve and the direction of water flow Other configurations are possible and there may be multi ple units tied together in larger buildings WARNING USE ONLY COPPER LINES TO A N CONNECT THE DESUPERHEATER TEMPERA TURES COULD REACH 200F SHOULD THE DHW CUTOUT SWITCH FAIL POTENTIALLY RUPTURING PEX PIPING Ensure the tank is filled with water and under pressure before activating the heat pump Slightly loosen the boiler drain on the DHW Out pipe to allow air to escape from the system before the unit is started This step will make certain that the domestic hot water circulator in the unit is flooded with water when it is started CAUTION the domestic hot water pump is water lu A bricated damage will occur to the pump if
70. d not be positioned directly above a return grill Most installations have the thermostat located in a hallway or in the inner wall of the living room It should be noted that most homes do not have any supply ducts in the hallway This can lead to a temperature lag at the thermostat if there is very little air movement in the hallway causing the home to be warmer than indicated by the thermostat PLENUM HEATER OPTIONAL For installations that do not already have a backup heat source such as electric baseboard wood stove propane etc it is recommended that a plenum heater be installed either in the ductwork or in the air handler if it has provisions to do so This provides two functions The first function of the plenum heater is to act as an auxiliary heat source As such it will provide additional heat on extremely cold days if the heat pump is unable to bring the home tempera ture up quickly enough eliminating any discomfort to the home owner The second function of the plenum heater is to provide emer gency heat should a problem occur that causes the heat pump to be locked out This can be engaged by setting the thermostat to emergency heat allowing the plenum heater to function while preventing the heat pump from operating Should the heat pump fail while the home is vacant the auxiliary function of the thermostat will maintain the temperature setting of the thermo stat Hefer to the installation manual of the sele
71. e N WN jx mm lt o Q OQ N Q O N White Black Stripe Low Pres 1 Low Pres 2 R410a 55psig R410a 75psig High Pres R410a 565psig Control Board status M gt Flow F R CC Contactor Coil e b C AORO G N H Hl Il N A for Single Stage Units AIR HANDLER PLENUM HEATER OPERATION amp 1 provides of dry contacts for operating plenum heater connects to 24VAC hot wire 2 424 of the air handler 5 to the terminal of the air handler all fans 1 0000 3 1 connects to the Y1 terminal of the air handler multi speed fans onl Fan Fw2 Fw2 224 to the W2 21 the Relay air handler multi speed fans only 2 connects to the Y2 terminal of the air handler multi speed fans only 170 Plantation Rd MARITIME GEOTHERMAL m Drawing Name Size Drawing Number REV SHEET DATE 15 DEC 2013 ELECTRICAL DIAGRAMS 208 230 1 60 continued
72. e Ground LOOD uuu IILI dope Page 18 Adding Antifr eez u u 19 Press rizali i e Page 19 uuu u Page 19 STARTUP PROCEDURE 21 Pre sstapt erede nM Page 21 Uni eme E P Page 22 Startup RECO uo uuu uu euo Up DERE MS UM Page 23 GENERAL MAINTENANCE cua races aga NEMPE PAGE 24 TROUBLESHOOTING GUIDE uuu uu u u 25 34 MODEL SPECIFIC INFORMA TIONG uud u 35 Charge Chart mds quM cess 35 geleistet Page 35 Slandard Capacity
73. e ports of the air handler unit using couplings or alternately the tubing can The same may be done to connect 001229MAN 03 Page to the previously installed stubs on the RS unit All joints should be silver soldered with 5 silfos DRY NITROGEN MUST BE BLED THROUGH THE SYSTEM DURING ALL SILVER SOLDERING PROCEDURES TO PREVENT OXIDATION FROM OCCURING ON THE INSIDE OF THE COPPER TUBING The service ports on the unit can be used to connect the nitrogen with a refrigeration manifold If necessary a wet rag can be wrapped around the each of the ports to prevent melting the grommet when silver soldering Ensure that no water enters any of the ports or tubing PRESSURE TESTING Once all connections are complete the system should be pressure tested to 200PSIG 1380kPa with dry nitrogen Remove the caps from the service port on the access valves and connect a the hoses of a refrigeration manifold to the service ports and pressuring the air handler and interconnect tubing Check all joints at the unit and any made in the interconnect piping for leaks using soap suds Spray nine etc is important not to bypass this step as vacuuming the system with a leak will introduce moisture into the system making the vacuum process take much longer than if the leak had been found and repaired first VACUUMING THE SYSTEM Remove the pressure from the air handler system and connect the vacuum pump to the refrigeration manifold Tig
74. en Verify disconnect switch is in the ON position Determine why the disconnect switch was opened if all is OK close the switch Fuse blown Breaker Tripped Same Line to L1 and L2 No W2 signal at nal strip mostat Faulty thermostat Faulty thermostat Faulty thermostat wiring 24VAC signal Plenum Heater transform from to ground is burned out at the plenum heater control connector No call for auxiliary or Heat pump termi emergency heat from ther At plenum heater disconnect box if installed voltmeter shows voltage on the line side but not on the load side Check if breaker is tripped Measuring L1 to ground and L2 to ground both yield 115VAC but L1 to L2 yields OVAC Verify that the thermostat is indicat ing that auxiliary or emergency heat should be on Thermostat doesn t indicate a for auxiliary or emergency when it should Thermostat indicates auxiliary or emergency but no 24VAC signal present across C and the auxiliary and or emergency pin at the ther mostat 24VAC signal is present across C and the auxiliary and or emergency pin at the thermostat but no 24VAC signal is present across W2 and C at the heat pump terminal strip Voltmeter does not show 24VAC across transformer secondary wind ing Reset breaker or replace fuse at plenum heater disconnect box Replace fuse with proper size and type Time delay type D Correct
75. en Replace flow switch if signal is Only if installed each flow switch pin on the control not present at both terminals board and the C terminal of the ter control board minal strip while there is flow through the unit Faulty control board 24VAC is present across each Replace control board FLOW SWITCH terminal and C but not voltage is present across CC on the control board and C 001229MAN 03 Page 26 DATE 15 DEC 2013 Compressor will not start Compressor starts hard Compressor Stage 2 will not activate DATE 15 DEC 2013 COMPRESSOR TROUBLESHOOTING Fault Possible Cause Verification Recommended Action Faulty control board Faulty run capacitor Single phase only Loose or faulty wiring Measuring from C on the terminal Strip verify there is voltage at Y HP1 HP2 LP1 LP2 and both flow pins but no voltage present at CC Check value with capacitance meter Should match label on capacitor Compressor will hum while trying to start and then trip its overload Check all compressor wiring includ ing inside compressor electrical box Replace control board Replace if faulty Fix any loose connections Re place any damaged wires Faulty compressor contactor Voltage on line side with contactor held closed but no voltage on one or both terminals on the load side Points pitted or burned Or 24VAC across coil but contactor will not engage Replace contacto
76. eplace TXV if this does not work Replace contactor See Fan Troubleshooting section Correct the problem Page 30 DATE 15 DEC 2013 FAN TROUBLESHOOTING AIR 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 above 30 F 17 C motors The ductwork is poorly designed or greatly undersized if the fan motor cannot provide the required airflow Air flow selected on air Check selection on air handler Select a higher setting handler is too low Fan operating Incorrect connections to Refer to air handler instruction man Correct the connections wrong Stage air handler ual for proper connections speed Fan not operat air handler wiring Verify the wiring using the air han Repair any loose connections ing or operating dler instruction manual intermittently Faulty fan motor Inspect as per air handler instruction Replace motor if faulty manual DATE 15 DEC 2013 Page 31 001229MAN 03 PLENUM HEATER TROUBLE SHOOTING Faut Possible Cause Verification Action No 230VAC across plenum heater L1 and L2 if installed Disconnect switch op
77. eplace TXV if this does not work Try switching modes a few times Replace check valve if problem con tinues Filter drier plugged Feel each end of the filter drier it should be the same temperature If there is a temperature difference then it is plugged Also causes low suction pressure Replace filter drier Undersized Air Handler air coll Unit is overcharged Low or no Outdoor liquid flow Entering liquid tempera ture too cold Dirty or fouled coaxial heat exchanger typically for ground water unlikely for ground loop High sub cooling low delta T across air coil High sub cooling low delta T across air coil Delta T across the Outdoor Loop ports should be between 5 7 F 3 4 C or compare pressure drop to the tables for the unit Measure the entering liquid temper ature Most likely caused by under sized ground loop Disconnect the water lines and check the inside of the pipes for scale deposits Verify size of air coil Attempt to reduce charge and verify in both modes Replace with proper size air handler Remove 1 2lb of refrigerant at a time and verify that the discharge pressure reduces Determine the cause of the flow restriction and correct it Verify pumps are working and sized correctly for ground loop systems Verify well pump and water valve is working for ground water systems Increase the size of the ground loop Have a qualified service technician
78. ge codes 1 230 1 60 and 2 208 3 60 are powered by a 75VA class II transformer The transformer has a resettable breaker on the secondary side for circuit protection Should the breaker trip locate and correct the problem and then reset the breaker by pressing on it other voltage code models have a 100VA transformer with pri mary and secondary fuses for circuit protection IMPORTANT NOTE For 208 230VAC 1 60 units if connect ing to 208VAC power supply move the red wire connected to the 240 terminal of the transformer to the 208 terminal of the transformer CIRCULATOR PUMP MODULE WIRING GROUND LOOP ONLY The heat pump has provisions for connecting the circulator pump module so that the pumps will be turned on whenever the compressor operates Connect the circulator pump module to the appropriate two terminals of the terminal strip marked OUTDOOR CIRCULATORS in the heat pump as per the volt age of the circulator pump module Ensure that the total current draw does not exceed the value indicated on the label in the heat pump electrical box Refer to the electrical box drawing on the electrical box cover for more information THERMOSTAT REQUIREMENTS The RS Series unit requires a three stage heating and two stage cooling thermostat for proper operation The stages are 1 low speed S2 high speed and 3 electric auxiliary heating only One can be purchased with the unit or other thermostats with the same number of st
79. hten all hose connections open the valves on the manifold and start the vacuum pump Vacuum the system until the reading on an electronic vacuum gauge remains below 500 microns for a period of 5 minutes the system is sealed and the vacuum pump is shut off CHARGING THE SYSTEM The RS unit is pre charged with enough refrigerant for the following e The compressor unit and air handler 208 of distance to the air handler Additional refrigerant is required in the amount of 0 10z 0 003kg for each additional foot of distance between the compressor unit and air handler If additional refrigerant is required as per above it can be added as a liquid by weighing it into the low side of the system during the startup procedure as a liquid at a rate of no more than 1 Ib per minute until the prescribed charge is reached When the vacuum procedure has been completed ensure the refrigeration manifold valves are closed Remove the large cap from the end of each access valve Slowly open the Vapour Line access valve using and allan key in the end of the valve until refrigerant can be heard passing by When the pressure on the manifold gauges shows a positive pressure remove the manifold hoses from the service ports of the access valve and install the caps on the service ports Fully open the Vapour Line access valve and fully open the Liquid Line access valve Install the large caps on both 14 DATE 15 DEC 2013 Ground Water System Infor
80. ial exchanger 001229MAN 03 TROUBLESHOOTING COOLING MODE a Possible Cause Recommended Action High Discharge pressure continued blocked Unit is overcharged High Suction Pressure open may appear to not be pumping stuck open Leaking reversing valve Low Suction Pressure Air Flow TXV stuck almost closed or partially blocked by for eign object Faulty cooling TXV by pass check valve leaking Low or no refrigerant charge Faulty compressor not pumping Faulty heating bypass check valve adjusted too far Temperature drop can be felt across the cooling TXV Unit oper ates properly in cooling mode High sub cooling low delta T across water coil Verify superheat It should be be tween 8 12 F 3 6 C Superheat will be low if TXV 1 open too far Adjusting the TXV does not affect the superheat or the suction pres sure Low super heat and dis charge pressure Reversing valve is the same tem perature both ends of body common suction line is warm com pressor is running hot See Fan Troubleshooting section Note low airflow will cause the air coil to ice up once the suction drops below 90PSIG Adjusting the TXV does not affect the superheat or the suction pres sure may be frosting up Also low discharge pressure Switch to cooling mode Unit oper ates correctly Entering air temperature
81. iguration Domestic COLD IN from well 1 2 Union 1 2 1 2 PT Ball Check Boiler Valve Valve Drain 1 2 COPPER LINES Insulate with 5 8 pipe insulation OPTIONAL must install both HEAT PUMP CONNECTIONS DHW OUT 1 2 Refer to the heat pump labels for connection locations DHW IN 1 2 C o o So Chris Geddes 10 MAR 09 Chris Geddes 10 MAR 09 opo Approved ENG Date Chris Geddes 10 MAR 09 REV ECO IMPL BY APVD BY DATE DATE 15 DEC 2013 1 2 Union 2 Hu 1 2 Ball Check Boiler Valve Valve Drain 1 2 COPPER LINES Insulate with 5 8 pipe insulation Ball Valve OPTIONAL must install both 125pisg 1 2 PRV Valve 1 2 MPT Domestic COLD IN from well Approved By MFG Date Ball Valve 125psig Pressure Relief Valve Insulated t Domestic Hot Water Pre Heat Tank Pressure Relief alve Insulated Domestic Hot Water Pre Heat Tank Drawing Name Page 9 GEOTHERMAL Ball Valve Domestic HOT OUT to house or mixing valve 125psig Pressure Relief Valve 120 140 50 60 Electric Gas Insulated Domestic Hot Water Tank Domestic HOT OUT to house or mixing valve 125psig Pressure Relief Valve 120 140 50 60 Electric or Gas Insulated
82. ions available in order to better match the space requirements or constraints of the installation There is a vertical variation top discharge for up flow applications a horizontal variation with side discharge for crawl space applications and a cubic variation for down flow applications Not that not all variations are available for all mod els sizes refer to Application Chart on page 3 of this manual Refer to TABLE 7 for the airflow values for each model size If a third party air handler is used the selected model should match the size of the RS unit as close as possible for heating and cooling loads The air handler should be able to provide the air flow required within 10 by the RS unit in order to maxim ize system efficiency See TABLE 7 for the air flow values per unit size TABLE 7 Air Flow Values It is recommended that an air handler with an A coil setup be selected lt is important that the air coil total volume be close to the volumes shown in TABLE 8 to minimize refrigerant charge adjustment If a match is unavailable then select a higher air coil volume unit Undersized air coils can cause problems with refrigerant backing up in the coils reducing output and efficiency IMPORTANT NOTE The air handler must have its own cooling TXV as well as a bypass around the TXV for heating mode in order to function properly with the RS unit 10 DATE 15 DEC 2013 TABLE 8 Volumes
83. ize of the plenum heater if installed 4 Verify that the control connections to the thermostat air handler and plenum heater if installed are properly connected and all control signals are off so that the unit will not start up when the power is turned on 5 Ensure all access panels except the lower one that provides access to the electrical box are in place DATE 15 DEC 2013 Page 21 001229MAN 03 UNIT STARTUP The system is now ready to be started The steps below outline the procedure for starting and verifying proper operation of the system It is rec ommended that safety glasses be worn during the following procedures ENSURE UNIT IS CHARGED WITH REFRIGERANT BEFORE TURNING THE POWER ON STARTING COMPRESSOR UNDER WILL DESTROY IN A MATTER OF SECONDS VOIDING THE WARRANTY IF THE UNITIS NOT FULLY CHARGED THE REMAINDER CAN BE ADDED DURING HEATING MODE STEP 2 Preparation 1 Remove the caps from the service ports and connect a refrigeration manifold set to the unit 2 Turn the power on to the compressor unit and set the thermostat to OFF Set up the thermostat as the instructions provided with it so that it will function properly with the heat pump system set for heat pump not for heating and cooling The signal should be set to active in cooling mode 3 Measure the following voltages on the compressor contactor and record them on the startup sheet 11 12 12 13 11 13 Heating Mode 1 Set the thermo
84. mation GENERAL REQUIREMENTS 1 The temperature of the well water should be a minimum of 39 F 4 C and should normally be 45 7 C 2 The well system must be able to supply the required water flow as listed under the Total Flow column in TABLE 12 _TABLE 12 Required Flow and Air Tank Sizing _ Minimum Air Bladder Tank USgal L 7 0 0 44 4 0 25 11 0 69 22 83 10 0 0 63 4 0 25 14 0 88 28 106 12 0 0 76 4 0 25 16 1 01 32 121 4 0 25 18 1 14 36 136 4 0 25 20 1 26 40 151 4 0 25 21 1 32 42 159 16 0 1 01 17 0 1 07 5 6 14 0 0 88 These are minimum water requirements based entering water temperature of 46 F Based on two minute well pump run time Use next size larger tank if there is not a match for the value indicated A larger tank may be used if a longer run time is desired PLUMBING THE HEAT PUMP The port connections for the Outdoor Loop are 1 brass FPT fittings They are marked as OUTDOOR IN and OUT Plumbing lines both supply and discharge must be of adequate size to handle the water flow necessary for the heat pump A 1 copper or plastic line should be run to the Outdoor IN Supply IN pipe of the heat pump Similarly a 1 line should be run from the Outdoor OUT Supply Out pipe to the method of disposal P T plugs should be installed at each port See Diagram A in the Ground Loop section f
85. me total square surface area as the total of the supply grills 5 The square surface area of the return trunks should equal the square surface area of the grills being handled at any given point along the trunk Itis VERY IMPORTANT that all turns in both the supply trunks and the return trunks be made with TURNING RADII Air act like a fluid and just like water pressure drop is increased when air is forced to change direction rapidly around a sharp or irregular corner It is recommended that flexible collars be used to connect the main trunks to the heat pump This helps prevent any vibrations from travelling down the ductwork If a plenum heater is installed the collar should be at least 12 away from the heater elements The first 5 10 feet of the main supply trunks should be insulat ed with acoustical duct insulation to further inhibit any noise from the unit from travelling down the ductwork If a plenum heater is installed insulation should not be placed within 12 of the heater elements Drawing 000649CDG shows a typical installation DUCT SYSTEMS GRILL LAYOUT Most forced air heating systems in homes have the floor grills placed around the perimeter of the room to be heated Supply grills should be placed under a window when possible to help prevent condensation on the window mentioned in the pre vious sub section supply grill leads should be 6 in diameter 28 sq in each to allow 100cfm of air flow DATE 15 DEC
86. n conjunction with this startup procedure to pro vide 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 Geothermal Ltd Check the boxes or fill in the data as each step is completed For data boxes circle the appropriate units Fill in the top section of all three copies or one copy if photocopies can be made after the startup has been completed PRE START INSPECTION Ductwork 1 Verify that all ductwork has been completed and is firmly attached to the air handler unit Verify that any dampers or diverters are properly set for operation of the heat pump system Verify that all registers are open and clear of any objects that would restrict the airflow Verify that a new air filter is installed and the cover is secured the air handler Verify the condensate drain is connected to the air handler properly trapped vented and free of debris If a plenum heater has been installed verify that it is securely fastened to the ductwork G Outdoor Loop Ground Loop 1 Verify that all shutoff valves are fully open and there are no restrictions in the piping from the heat pump to the ground loop and that full flow is available to the heat pump 2 Verify that the entire system has been flooded and all the air has been purged as much as possible Further purging may be required after the system has been operating for a while
87. omes first To make a claim under this warranty parts must be returned to MG in Petitcodiac New Brunswick freight prepaid no later than ninety 90 days after the date of the failure of the part If MG determines the part to be defective and within MG s Limited Express Residential Warranty MG shall when such part has been either replaced or repaired return such to a factory recognized distributor dealer or service organization freight prepaid The warranty on any part repaired or replaced under warranty expires at the end of the original warranty period LIMITED EXPRESS RESIDENTIAL WARRANTY LABOUR This Limited Express Residential Labour Warranty shall cover the labour incurred by MG authorized service personnel in connection with the installation of a new or repaired warranty part that is covered by this Limited Express Residential Warranty only to the extent specifically set forth in the current labour allowance schedule A provided by MG s Warranty Department and only as follows 1 MG Units for two 2 years from the Warranty Inception Date 2 Thermostats auxiliary electric heaters and geothermal pump modules built or sold by MG when installed with MG Units for two 2 years from the Warranty Inception Date 3 Sealed refrigerant circuit components of MG Units which components only include the compressor refrigerant to air water heat exchangers reversing valve body and refrigerant metering device for five 5 years from
88. on the season STEP 3 If 24VAC signal does not appear across Y1 and C of the terminal strip within 6 minutes proceed to the THERMOSTAT TROUBLESHOOTING section otherwise proceed to STEP 4 STEP 4 fault code appears once a signal is present at Y1 and the compressor does not attempt to start proceed to the FAULT CODE TROUBLESHOOTING section otherwise proceed to STEP 5 STEP 5 If no fault codes appear and the compressor does not attempt to start attempts to start but cannot starts hard or starts but does not sound normal proceed to the COMPRESSOR TROUBLESHOOTING section otherwise proceed to STEP 6 STEP 6 If the compressor starts and sounds normal this means the compressor is OK and the problem lies elsewhere Proceed to the OPERATION TROUBLESHOOTING section NOTE To speed up the troubleshooting process the Test Jumper on the safety board can be placed to the YES position to change the anti short cycle timer to 5 seconds Be sure to set it back to NO when servicing is complete POWER SUPPLY TROUBLESHOOTING PossibleCause Verification Recommended Action No power to the Disconnect switch open Verify disconnect switch is in the ON Determine why the disconnect heat pump if installed position switch was opened if all is OK close the switch Fuse blown At heat pump disconnect box Reset breaker or replace fuse Breaker Tripped voltmeter shows 230VAC on the line with proper size and type Time
89. or a description of P T plugs The water valve should be installed in the discharge line Refer to drawing 000907CDG at the end of this section for the recommended setup Placing the water valve in the dis charge line ensures that the heat exchanger inside the heat pump remains full of water when the unit is not running Unions or some other form of disconnect should be used so that the coaxial heat exchanger may be accessed should it required cleaning The heat pump has an electrical connector for the water valve just inside the case After the water valve is installed run the valve harness into the case through the hole provided Remove the jumper plug from the Valve Connector and connect the har ness in its place Ideally there will be water flow available in excess of the requirement of the heat pump In such a situation the proper pump can be selected to maintain a pressure of 30 to 40 psig on the lines when the heat pump is operating However in some cases a well can supply a heat pump only if the minimum DATE 15 DEC 2013 Page 15 requirement for water is used Water flow to the heat pump can be controlled very accurately by the installation of a reverse action refrigeration pressure valve in the discharge line of the unit Another more common method of regulating the flow is by the use of a DOLE Valve This valve will automatically control the amount of water flowing through it by varying the diameter of a flexible rubbe
90. or bacteria damage Corrosion or abrasion of the product 0 Products supplied by others 1 Products which have been operated in a manner contrary to MG s printed instructions 2 Products which have insufficient performance as a result of improper system design or improper application installation or use of MG s products 3 Electricity or fuel or any increases or unrealized savings in same for any reason whatsoever cept for the limited labour allowance coverage set forth above MG is not responsible for The costs of fluids refrigerant or system components supplied by others or associated labour to repair or replace the same which is incurred as a result of a defective part covered by MG s Limited Residential Warranty 2 The costs of labour refrigerant materials or service incurred in diagnosis and removal of the defective part or in obtaining and replacing the new or repaired part 3 Transportation costs of the defective part from the installation site to MG or of the return of that part if not covered by MG s Limited Express Residential Warranty m WY X 4 The costs of normal maintenance This Limited Express Residential Warranty applies to MG Residential Class products manufactured on or after February 15 2010 MG S LIABILITY UNDER THE TERMS OF 5 LIMITED WARRANTY SHALL APPLY ONLY TO THE MG UNITS REGISTERED WITH MG THAT BEARS THE MODEL AND SERIAL NUMBERS STATED ON THE INSTALLATION START UP RECORD AND MG SHA
91. or contactor as shown in the electrical box diagram Turn the DHW Switch in the unit post on Turn the power to the unit on 6 Remove the electrical cover from the plenum heater Place a current clamp meter around one of the supply wires Turn the power to the plenum heater Adjust the thermostat setpoint to 85 F 29 C Verify that the current draw increase as each stage is activated 10kW has 2 stages 15kW has 3 stages and 20kW has 4 stages 7 Verify the DHW IN and DHW OUT temperatures if applicable by hand caution pipes get hot If the DHW OUT line does not become hotter than the DHW IN line the circulator is air locked Bleed the air from the system and check the temperature differential again to ensure there is flow from the circulator Cooling Mode 1 Set the thermostat to cooling mode and adjust the setpoint to activate Stage 1 and Stage 2 2 Monitoring the refrigeration gauges while the unit runs Record the following after 10 minutes of runtime Suction pressure Discharge pressure Duct Return temperature Duct Supply Out temperature Duct Delta T Outdoor Loop In Supply In temperature Outdoor Loop Out Supply Out temperature Outdoor Delta T ee 3 Adjust the thermostat setpoint to the desired room temperature if possible otherwise set it just low enough to allow the unit to run ie 1 F 0 5 C less than room temperature and let the unit run through a cycle Record the thermostat setpoint suction and dis
92. pressure control is connected to HP1 and 2 The control board also has provisions for a flow switch The flow switch is unused from the factory and a jumper wire is placed across the FLOW SWITCH terminals If a flow switch is desired the jumper can be removed and the two leads from the flow switch can be connected to the FLOW SWITCH terminals on the safety board The flow switch is ignored for 5 seconds on compressor startup to allow time for flow to be established The high and low pressure controls are monitored at all times The compressor will not be able to start if either of them has a fault The control board has an on board LED and a FAULT pin with a 24VAC output which is routed to the L terminal of the thermostat terminal strip An external indicator or relay can be connected across L and C on the terminal strip if external sig naling is desired Should a fault condition occur the LED will flash the code of the fault condition while the safety control in question is open The codes are shown in TABLE 4 The con trol board will lock out the compressor for five minutes when a fault occurs The control board will then restart the compressor if the fault has been cleared Should a second fault condition occur within a 60 minute period the control board will go into permanent lockout mode and energize the FAULT pin The LED will flash the fault code until the control board is reset by powering down the unit TABLE 4 Control Boar
93. provided by different concentrations Propylene 38 30 22 15 BY WEIGHT Protection to 10 F 15 F 6 3 12 9 Methanol 16 8 13 6 10 Propylene Glycol 3096 23 5 18 3 WARNING Add enough antifreeze to allow for temperature 20 F 11 C lower than the expected N lowest loop fluid temperature entering the heat pump Insufficient antifreeze concentration could cause the heat exchanger to freeze and rupture voiding the warranty Although many different antifreeze solutions have been employed in geothermal systems the alcohols such as methanol or ethanol have the most desirable characteristics for groundloop applications The overall heat transfer characteristics of these fluids remain high although care must be taken when handling pure alcohols since they are extremely flammable Once mixed in a typical 2596 by volume ratio with water the solution is not flammable In situations where alcohols are not allowed as a loop fluid due to local regulations then propylene glycol is a non toxic alternative which can be substituted Propylene glycol should only be used in cases where alcohols are not permitted since the heat transfer characteristics are less desirable and it becomes more viscous at low temperatures increasing pumping power The volume of fluid that your loop system holds can be closely estimated by totaling the number of ft of each size pipe in the system and referencing TABLE
94. r Thermal overload on compressor tripped Burned out motor open winding Ohmmeter shows reading when placed across and 5 terminals and infinity between 8 R or C amp S A valid resistance reading is present again after the compressor has cooled down Remove wires from compressor Ohmmeter shows infinite resistance between any two terminals Note Be sure compressor overload has had a chance to reset If compressor is hot this may take several hours Proceed to Operation Trouble shooting to determine the cause of the thermal overload trip Replace the compressor Burned out motor shorted windings Remove wires from compressor Resistance between any two termi nals is below the specified value Replace the compressor Motor shorted to ground Seized compressor due to locked or damaged mechanism Start capacitor faulty Single phase only Remove wires from compressor Check for infinite resistance be tween each terminal and ground Compressor attempts to start but trips its internal overload after a few seconds Run capacitor already verified Check with capacitance meter Check for black residue around blowout hole on top of capacitor If any terminal to ground is not infinite replace the compressor Attempt to rock compressor free If normal operation cannot be established replace compressor Replace if faulty Remove black residue in electrical box if any
95. r orifice through which the water passes This minimizes the water usage of the unit and also prevents exces sively low discharge pressure when in cooling mode Dole valves can be noisy it is recommended that they be installed outside if possible Optionally a water flow meter can be installed in the dis charge line so that the exact amount of water flowing can be determined at a glance It should be placed between the Out door OUT Supply OUT pipe of the heat pump and the water valve With Proper flow there should be 5 7 F 3 4 C delta T be tween the IN and OUT water temperatures of the heat pump when operating in the heating mode All water line valves on both the supply and discharge lines should be either BALL or GATE valves GLOBE valves have a higher pressure drop meaning more pumping power to maintain the required flow to the heat pump PIPE INSULATION All ground water piping to and from the Outdoor Loop ports on the heat pump should be insulated with 3 8 closed cell pipe insulation to prevent condensation and dripping onto floors or walls WATER DISCHARGE METHODS Water disposal methods vary from area to area However some consideration should be made to prevent the cooled discharge water from immediately coming in contact with the supply source Attempting to return the water to the source well will eventually cool the water so much that the heat pump will shut off on its low pressure safety control Accept
96. r tank and flooded with Potential water remove the brown wire with the insulated terminal located here This pump is water lubricated and must not be run dry Once connected the external ON OFF Gnd Lug switch may be used to temporarily turn the pump off C ee 9 222 MARITIME GEOTHERMAL m 2 Checked B Dat Chris Geddes 25 FEB 10 42 6 4 _ j 4 Approved By ENG Dais rawing Name 02 000183 c GEppes c 01 Auc 11 hrs Geddes 2 gt FEB 10 RS HAC P 1 Electrical Box Diagram ECO IMPL BY APVD BY 25 FEB 10 DATE Size Drawing Number REV SHEET A d B D A 001236ELB 02 1071 DATE 15 DEC 2013 Page 45 001229MAN 03 REFRIGERATION CIRCUIT DIAGRAMS Modular RS Series Refrigeration Circuit Heating Mode AIR HANDLER 4 Vapour Line Equalizer Port gt Liquid Line Cooling RS UNIT Access Access Valve Valve Sight NOTE Glass 4 way valve is de energized in this mode Low Pressure Cutout 1 Closed Loop Low Pressure Filter LS mS Cut out 2 Drier Open Loop Service Port A DHW OUT ut out 5 Optional Desuperheater A OUTDOOR OUT Evaporator Compressor Accumulator lt OUTDOOR IN
97. sate Connections Modular Case Size Drawing Number Drawing Rev SHEET 001230CDG 001229MAN 03 Page 12 DATE 15 DEC 2013 000215 C GEDDES C GEDDES ECO 4 IMPL BY APVD BY 15 DEC 2013 22 FEB 10 TABLE 10 Duct Sizing Guide external static of 0 20 H20 gt lt gt lt 6 5 x 6 5 8x8 8x8 8 5 x 8 5 8 5 x 8 5 9 5 9 5 11 11 11 11 12 x 14 12 x 14 15 x 15 15 15 16 17 16 17 18 19 18 19 20 20 20 20 22 22 22 22 24 x 24 26 26 26 26 28 x 28 28 x 28 30 x 30 30 x 30 30 x 32 30 x 32 i Diameter Duct Area Rectangular Equivalents in 680 3954 14 8x22 9x19 10x17 11x15 95 154 1 8x22 9x19 10x17 11x15 1325 201 16 8x30 10 22 12 18 14 16 1450 201 16 8x30 10 22 12 18 14 16 1750 254 18 8x40 10 30 12 24 14 20 2000 254 18 8x40 10 30 12 24 14 20 2250 314 20 10x38 12 30 14 26 16 22 2600 314 20 10x38 12 30 14 26 16 22 2900 2 12 36 14 30 16 26 18 23 3400 380 22 12x3 14x30 16x26 18x23 3600 452 24 x38 16x32 18x28 20x25 4800 452 24 14 38 16x32 18x28 20x25 5250 531 26 16x38 18 32 20 30 22 24 6125 66 28 18 38 20x34 22x30 24x28 6500 66 28 18x38 20x34 22x30 24x28 7250 77 30 20x40 22x38 24x32 26x30 707 30 20x40 22x38
98. side but not on the load side delay type D No display on Transformer breaker Breaker on transformer is sticking Push breaker back in If it trips thermostat tripped out again locate cause of short circuit and correct Faulty transformer Transformer breaker is not tripped Replace transformer 230VAC is present across L1 and L3 of the compressor contactor but 24VAC is not present across and C of the terminal strip Faulty wiring between 24VAC is not present across C and Correct the wiring heat pump and thermo of the thermostat stat Faulty Thermostat 24VAC is present across C and R Replace thermostat Ru of the thermostat but thermo stat has no display DATE 15 DEC 2013 Page 25 001229MAN 03 THERMOSTAT TROUBLESHOOTING Possible Cause Verification Recommended Action No Y1 signal to Incorrect thermostat set Thermostat does not indicate call Correct the setup heat pump up for heat No 24VAC signal present after 6 minutes across C and Stage 1 of the thermo stat Faulty thermostat to heat 24 signal present across Stage Correct or replace wiring pump wiring 1 and C of the thermostat but not present across Y1 and C of the ter minal strip Faulty thermostat No 24VAC between Stage 1 and C Replace thermostat of the thermostat when a call is indi cated on the thermostat FAULT CODE TROUBLESHOOTING Fault Possible Cause Verification _ Recommended
99. stat to heating mode and adjust the setpoint to activate Stage 1 and Stage 2 The fan should slowly ramp up to speed the time delay of the thermostat expires if applicable and the compressor will start allow 30 60 seconds for the water valve to open for ground water systems 2 Check the refrigeration gauges The suction and discharge pressures will depend on the loop temperatures but they should be about 90 110PSIG and 260 360PSIG respectively for a typical start up 3 Monitoring the refrigeration gauges while the unit runs Record the following after 10 minutes of runtime 1 Suction pressure 2 Discharge pressure 3 Duct Return temperature poke a small hole in the flex collar and insert probe in airstream 4 Duct Supply temperature poke a small hole in the flex collar and insert probe in airstream 5 Duct Delta T should be between 22 32 F 12 18 6 Outdoor Loop In Supply In temperature 7 Outdoor Loop Out Supply Out temperature 8 Outdoor Delta T should be between 5 8 F 3 4 C 9 Outdoor flow if available 10 Compressor L1 C current black wire place meter between electrical box and compressor 4 Adjust the thermostat setpoint to the desired room temperature and let the unit run through a cycle Record the setpoint suction and discharge pressures when the unit shuts off 5 For units with a desuperheater turn the power off to the unit Connect the brown wire with the blue insulated terminal to the compress
100. t Ground Loop Fluid e 60Hz ELT 50 10 en pce 320 1 105 18 300 54 1 670 N D CFM 680 800 1030 1200 6 6 1200 566 2 240 27 500 83 5 E 2 897 3 525 46 900 137 783 3 435 45 700 134 Table 18 Standard Ratings Ground Water Heating EAT 68 20 ons USGPM Ls PSI 4 87 4 36 4 60 4 30 7 0 Stage 2 378 Stage 1 Stage 2 Stage Stage2 Stage 1 389 Stage 2 Stage 2 Stage 1 35 24 800 73 486 1 645 25 800 7 6 566 2 455 36 000 10 5 585 2 100 35 500 104 708 3 025 48 500 142 x 897 3 905 60 000 17 6 783 3 540 52 000 152 991 4 780 68 500 20 1 77 500 Stage1 1030 486 1 70 22 500 1200 708 2 785 38 400 727 2 625 38 500 317 Stage 2 53 500 31 0 Stage 1 62 900 Nominal Pressure S 32 1 10 0 2 0 4 7 4 4 4 60 4 50 1540 1900 14 0 0 88 16 0 O1 e N 1 01 2100 2400 4 20 4 28 REV 09 1133 5 315 22 7 17 0 1 07 DATE 15 DEC 2013 001229 03 STADARD CAPACITY RATINGS continued Table 19 Standard Capacity Ratings Ground Loop Cooling 60Hz STAGE 1 ELT 68 F 20 80 6 F 27 C STAGE 2 ELT 77 25
101. t hot water creates longer run cycles Water is too hot Faulty DHW cutout failed Check contact operation Should Replace DHW cutout if faulty closed close at 120 F and open at 140 F Thermostat hot water Visually inspect the setting Readjust the setting to 120 F tank set too high Should 140 F if required by local code be set at 120 F 140 F if required by local code Dole flow control Valve The Dole flow control is a simple self cleaning device designed to deliver a constant volume of water from any outlet whether the pressure is 15 psig or as high as 125 psi The controlling mechanism consists of a flexible orifice that varies its area inversely with pressure so that a constant flow is maintained Multimeter Voltmeter In line Flowmeter DATE 15 DEC 2013 Page 33 001229MAN 03 REPAIR PROCEDURES PUMP DOWN PROCEDURE Connect the refrigerant recovery unit to the heat pump service ports via a refrigeration charging manifold and to a recovery tank as per the instructions in the recovery unit manual If there was a compressor burn out the refrigerant cannot be reused and must be disposed of according to local codes All water coil heat exchangers must either have full flow or be completely drained of fluid before recovery begins Failure to do so can freeze and rupture the heat exchanger voiding its warranty Note that this does not apply to double wall domestic ho
102. t water exchangers desuperheater coils Ensure all hose connections are properly purged of air Start the refrigerant recovery as per the instructions in the recovery unit manual Allow the recovery unit suction pressure to reach a vacuum Once achieved close the charging manifold valves Shut down purge and disconnect the recovery unit as per the instructions in its manual Ensure the recovery tank valve is closed before disconnecting the hose to it Connect a nitrogen tank to the charging manifold and add nitrogen to the heat pump until a positive pres sure of 5 10PSIG is reached This prevents air from being sucked into the unit by the vacuum when the hoses are disconnected The heat pump is now ready for repairs Always ensure nitrogen is flowing through the system during any soldering procedures to prevent soot buildup inside the pipes Maritime Geothermal Ltd recommends re placing the liquid line filter drier anytime the refrigeration system has been exposed to the atmosphere VACUUM AND CHARGING PROCEDURE STEP 1 After completion of repairs and nitrogen pressure testing the refrigeration circuit is ready for vacuuming STEP 2 Release the refrigerant circuit pressure and connect the vacuum pump to the charging manifold Start the vacuum pump and open the charging manifold valves Vacuum until the vacuum gauge remains at less than 500 microns for at least 1 minute with the vacuum pump valve closed STEP 3 Close the charging manifold
103. th minimal supplementary heat The unit should be in stalled as per CSA 448 2 02 For ground loop applications the ground exchanger should be designed using suitable software with a multi year analysis There are many factors to consider when sizing the heat pump Some of these factors include the number of levels the size of the windows the orientation of the home attached gar age bonus rooms walk in basement coldest outdoor tempera ture etc The heat loss program will take all of these factors into consideration in its calculations An undersized installation will not be as efficient as it will require excessive relatively ex 001229MAN 03 Page pensive auxiliary heat to maintain a comfortable temperature in the home and the cost savings of having a geothermal heat pump are greatly reduced Once the total heat loss has been calculated the unit can be sized using the performance tables from the specifications document in conjunction with the minimum expected entering liquid temperature of the ground loop well water temperature for ground water system The heat pump output must be able to match the total heat loss at the selected entering water tempera ture in order to provide a comfortable environment with minimal auxiliary heat AIR HANDLER SELECTION AND SIZING If using an AH series air handler simply refer to the MATCHING AH SERIES AIR HANDLER TABLE on page 3 of this manual There are three air handler model variat
104. the Warranty Inception Date Labour costs are not covered by this Limited Express Residential Warranty to the extent they exceed the amount allowed under said allowance schedule they are not specifically provided for in said allowance schedule they are not the result of work performed by MG authorized service personnel they are incurred in connection with a part not covered by this Limited Express Residential Warranty or they are incurred more than the time periods set forth in this paragraph after the Warranty Inception Date This warranty does not cover and does not apply to 1 Air filters fuses refrigerant fluids oil Products relocated after initial installation Any portion or component of any system that is not supplied by MG regardless of the cause of the failure of such portion or component Products on which the unit identification tags or labels have been removed or defaced Products on which payment to MG or to the owner s seller or installing contractor is in default Products subjected to improper or inadequate installation maintenance repair wiring or voltage conditions Products subjected to accident misuse negligence abuse fire flood lightning unauthorized alteration misapplication contaminated or corrosive liquid or air supply operation at abnormal air or liquid temperatures or flow rates or opening of the refrigerant circuit by unqualified personnel 2 Mold fungus
105. tion Circuit Diagram Cooling Mode CASE DETA LS S ZE 25 TO 45 THERMOSTAT a OUTDOOR LOOP IN 17 VAPOUR LINE TO AIR HANDLER FLARE LIQUID LINE TO AIR HANDLER 3 87 FLARE 1 2 t ELECTRICAL 4 Front View ALT THERMOSTAT WERE 1 ALT CIRC PUMP WIRE 2 Left Side View Right Side View 001229MAN 03 Page 48 DATE 15 DEC 2013 CASE DETAILS SIZE 55 80 DH IN 1 2 DHW QUT 1 7 FPT OUTDOOR LOOP IN T FPT UNE TO AR HANDLER nF FLARE LINE U FLARE P ELECTRICAL OUTDOOR LOOP OUT T FPT Left Side View Right Side View DATE 15 DEC 2013 Page 49 001229MAN 03 APPENDIX Control Board Specifications Lockout Protection Module Anti short cycle lockout control Pressure flow switch monitoring Alarm output during lockout 5 minute anti short cycle delay 5 second test mode LED fault codes for lockout status Test mode for reduced test time Conformally coated for moisture protection Mode of Operation Specifications The control will begin the 5 rninute time delay upon a Y Input call from the thermosat After the time delay expires the Voltage 18 to compressor contactor will be energized as long as the high Frequency 50 to 60 Hz and low switches are closed
106. ture pronounced Pete s plugs is recommended on both the entering and leaving lines at the heat pump see Diagram A DIAGRAM A Typical P T Pete s Plug amp Thermometer Stems Pluqs Pete s Plug Gage Adaptor GAGE THE PRESSURE Protective Cover Included 3 VALVE POCKET FOR ADDED PRESSURE PROTECTION 001229MAN 03 Page The P T plug will allow the installer or homeowner to check water flow through the loop by measuring the pressure difference through the heat exchanger and comparing it to that listed in the Model Specific Information section or the specifications document Optional fittings with P T ports are available for the circulator pump modules sold by Maritime Geothermal Ltd FLUSHING amp PURGING THE GROUND LOOP Once the groundloop has been installed and all connections are completed between the heat pump circulator pump module and ground loop the entire ground loop system should be pressure tested with air to 100 PSIG to make sure there are no leaks on any of the inside fittings Soap all joints and observe that the pressure remains constant for 1 hour When satisfied that all connections are leak free release the air pressure and connect a purge cart see Diagram to the flushing access ports at the pump module refer to drawing 000906CDG A temporary flushing system can alternately be constructed using a 45 gal barrel and a pump with sufficient volume and head capability to
107. uges to have different values as the loop temperature changes This fluctuation is normal since expansion and contraction of the loop fluid must be handled by the elasticity of the plastic loop e Pressurize the loop to a static pressure of 45 psig when installing a system in the fall going into the heating season Pressurize the loop to a static pressure of 25 psig when installing a system in the spring or summer going into the cooling season After operating the heat pump for a period of time any residual air in the system should be bled off and the static pressure should be verified and adjusted if necessary Add additional water antifreeze mix with the purge cart to bring the pressure back to the original setting if required PIPE INSULATION All ground loop piping inside the structure between the structure entry point and the heat pump should be insulated with 3 8 thick closed cell pipe insulation to prevent condensation and dripping onto floors or walls 19 001229MAN 03 Geo Flo Circulator Pump Module Installation Units with Brass FPT Fittings Air Bladder 2911 1 to 1 1 4 PE Socket Tank Optional Pressure 4 Fill amp p rt Gauge urge access ports 0 60PSIG 2914 Camlocks can be used Drain for quick connections Fittings can be removed and reused on other jobs when purging is complete Boiler Drain Connect wiring to appropriate
108. wiring Set thermostat to engage auxilia ry or emergency heat note some thermostats require a jumper be tween auxiliary and emergency Check the thermostat manual Replace thermostat Replace thermostat Correct wiring Replace transformer Plenum heater control board is faulty No 24VAC signal Faulty wiring from 1 to ground at the plenum heater control connector Transformer tested OK in previous step 24VAC present across C and ground at the plenum heater but not across ground of the plenum heater and of the heat pump terminal strip Replace control board Correct wiring Faulty wiring 001229MAN 03 If previous step tested OK 24VAC is present across ground of the plenum heart and 1 of the heat pump termi nal strip but not across ground of the plenum heater and 1 of the ple num heater Page 32 Correct wiring DATE 15 DEC 2013 PLENUM TROUBLE SHOOTING L Fautt Possible Cause Verification Recommended Action _ No 24VAC signal Faulty Plenum Heater 24VAC is present across 1 Replace relay from 1 to ground Relay in heat pump pin 3 of the relay 24 is present at the plenum from heat pump terminal strip to heater control plenum heater ground but not from connector heat pump terminal strip 1 to plenum heater ground Thermal overload Fan not operating See Fan Not Operating section Correct problem Reset thermal is trippe

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