ENGINEERING SPECIFICATIONS

ENGINEERING SPECIFICATIONS NORDIC RH-55-HACW-P-1T-*-SDE*F Horizontal Two-Stage R410a Model Size 55 (Nominal 4 Ton) Reversing (Heating AND Cooling) Domestic Hot Water (desuperheater) 230-1-60VAC Liquid to Air Geothermal Heat Pumps Maritime Geothermal Ltd. P.O. Box 2555 Petitcodiac, N.B. E4Z 6H4 Email: info@nordicghp.com Web: www.nordicghp.com Document Number: 000886SPC-02 REVISION DATE: 25 MAY 2009

MODEL NOMENCLATURE RH 55 HACW P 1T C SDERF xx Series: RH = Active Cooling Liquid to Air Horizontal Case Nominal Size: 55 = 4 Ton Functions: H = Heating AC = Active Cooling W = Domestic Hot Water Refrigerant: P = R410a Voltage Code: 1 = 230-1-60 VAC Compressor Stages: T = 2 Stage Revision: 01, 02 etc. Fan Oultet Orientation: F = Field Configurable Return Orientation: L = Left R = Right Fan Motor: E = ECM (Variable Speed) Fan Type: D = Direct Drive Air Coil: S = Standard Outdoor Loop Exchanger: C = Copper Z = Cupro-Nickel (CuNi) The models and revisions covered by this document are listed in the table below. MODEL REVISION RH-55-HACW-P-1T-C-SDELF 03 RH-55-HACW-P-1T-Z-SDELF 03 RH-55-HACW-P-1T-C-SDERF 03 RH-55-HACW-P-1T-Z-SDERF 03 25 MAY 2009 Page 2 000886SPC-02

NORDIC DESIGN FEATURES LIST The geothermal heat pump described in this specification document comes with the following features: 20ga satin galvanized case with welded reinforcing channel stiffeners and corner posts Corner mounting points for suspension applications Powder coat finish Acoustically insulated cabinet (1/2 thick) ECM fan motor with single side access. Left or right return (must be specified when ordered) Field configurable fan outlet orientation (side or end) Reversible air filter rack Stainless steel condensate drip tray Clear condensate drain with 3/4 PVC socket Multi-circuit high efficiency air-coil Refrigeration service ports located outside unit (1/4 Schrader) Insulated coaxial heat exchangers and piping available in copper or cupro-nickel 1 heavy duty brass FPT fittings for Outdoor Loop connections Two-stage Scroll compressor with hard start kit on single phase models Suction line accumulator Liquid line filter-drier Liquid line sight glass Balanced port Thermostatic Expansion Valve with internal bleed 4-way reversing valve High and low pressure safety controls Control board with anti-short cycle timer, three re-start attempts and permanent lockout mode Electrical box layout and schematic diagrams Installation and service manual Double wall Domestic Hot Water desuperheater suitable for potable water connections Bronze head ECM circulator for domestic hot water circuit uses less than half the power of traditional circulating pumps, and allows motor replacement without tools 1/2 heavy duty brass FPT fittings for Domestic Hot Water connections OPTIONAL EQUIPMENT The following is a list of optional equipment that may be ordered with the geothermal heat pump: 3-stage heat 2-stage cool programmable thermostat Circulator pump module with loop / unit isolation valves (230VAC) for ground loop applications Various adapters for unit and loop connections to pump module 1 Electronic Ball Valve (24VAC) & wiring harness for groundwater applications Electric plenum heater 25 MAY 2009 Page 3 000886SPC-02

NORDIC DESIGN FEATURES (Right Hand Return shown) Stainless Steel condensate drip tray. Reversible filter rack 4-way reversing valve Sight glass Optional side or end mount fan orientation configurable on site Heavy duty case constructed of satin galvanized panels with welded reinforcing channel stiffeners and corner posts. Cabinet completely insulated with 1/2 acoustic insulation. Bronze head domestic hot water circulator pump. Thermostat: ON @ 120 F OFF @ 140 F 1/2 Brass FPT Connections for DHW 1 Brass FPT Connections Field replaceable variable speed ECM fan motor with ball bearings and resilient mounting bracket Corner braces with 1/2 holes for suspension Mounting applications Bi-flow filter drier Balanced port TXV with internal bleed Insulated High Efficiency Turbotec coaxial heat exchanger. Resistant to accidental freezing Suction accumulator High efficiency Copeland Scroll two-stage compressor High & Low Refrigerant access ports Heavy duty electrical components. Contactor rated for 2 million cycles. Control board with lock-out indicator and antishort cycle timer. Hard Start kit on all single phase models. Clear condensate drain with 3/4 PVC socket Optional water valve for ground water installations. MAJOR COMPONENTS (Right Hand Return shown) Legend 1. Multi-circuit high efficiency air coil 2. Oversize coaxial heat exchanger 3. Direct drive fan with ECM motor 7. Copeland Two stage compressor 8. Balance port TXV with internal bleed 9. Bi-flow filter drier 10. Accumulator 11. Sight Glass 12. 4-way reversing valve 13. Bronze head DHW circulator CSA certified for electrical safety to CSA 22.2 No 236-05. 25 MAY 2009 Page 4 000886SPC-02

FRONT PERSPECTIVE VIEWS Left Return Right Return 25 MAY 2009 Page 5 000886SPC-02

CASE DETAILS Left Hand Return (Size 55 to 75) Front View Back View 25 MAY 2009 Page 6 000886SPC-02

CASE DETAILS Left Hand Return (Size 55 to 75) - continued Left Side View Right Side View Bottom View 25 MAY 2009 Page 7 000886SPC-02

CASE DETAILS Right Hand Return (Size 55 to 75) Front View Back View 25 MAY 2009 Page 8 000886SPC-02

CASE DETAILS Right Hand Return (Size 55 to 75) - continued Left Side View Right Side View Bottom View 25 MAY 2009 Page 9 000886SPC-02

ELECTRICAL BOX LAYOUT Left Return Right Return Legend 14. Airflow Selection Board (-12%,-6%, Nom.,+6%) 15. Compressor Contactor. 16. Potential Relay. 17. Plenum Heat Relay. 18. Run capacitor. 19. Start Capacitor 20. Class II control transformer with manual reset. 21. Ground Loop Pump Module Connection. 22. Thermostat Terminal strip. 23. Ground Lug. 24. Safety control board. Nomenclature Identifier Power Supply ELECTRICAL SPECIFICATIONS Heat Pump Electrical Information Compressor Fan FLA MCA Maximum Fuse/Breaker Minimum Wire Size V-ø-Hz MIN MAX RLA LRA RLA Amps Amps Amps ga 1 230-1-60 207 253 23.6 96 4.0 33.4 39.3 50 #6-3 MISCELLANEOUS INFORMATION Unit Weight Refrigerant Refrigerant Charge Lbs. kg Type Lbs. kg 485 220 R410a 8.0 3.6 MINIMUM AND MAXIMUM OPERATING TEMPERATURES* Loop Parameter Mode ( F) ( C) Note Outdoor Indoor (Duct) Minimum ELT Heating / Cooling 39 4 Ground water system. Minimum ELT Heating / Cooling 23-5 Ground loop system. Adequate freeze protection required. Maximum ELT Cooling 110 43 Ground loop system. Minimum EAT Heating / Cooling 60 16 Reduce flow if necessary during heating startup. Maximum EAT Heating 80 27 * Values in this table are for rated liquid and airflow values. 25 MAY 2009 Page 10 000886SPC-02

ELECTRICAL DIAGRAMS (230-1-60) 25 MAY 2009 Page 11 000886SPC-02

ELECTRICAL DIAGRAMS (230-1-60) - continued 25 MAY 2009 Page 12 000886SPC-02

ELECTRICAL DIAGRAMS (230-1-60) - continued 25 MAY 2009 Page 13 000886SPC-02

REFRIGERATION CIRCUIT DIAGRAMS 25 MAY 2009 Page 14 000886SPC-02

REFRIGERATION CIRCUIT DIAGRAMS 25 MAY 2009 Page 15 000886SPC-02

STANDARD CAPACITY RATINGS The tables below depict the results of standard capacity rating tests according to C13256-1 standards. C13256-1 is identical to ISO13256-1. Standard Capacity Ratings - Ground Loop Heating* 60Hz STAGE 1 - ELT 41 F (5 C) EAT 68 F (20 C) STAGE 2 - ELT 32 F (0 C) Pressure Input Model Size Liquid Flow Mode Airflow Capacity COP Drop Energy H Tons IGAL USG L/s PSI kpa CFM L/s Watts BTU/Hr kw W/W Stage 1 1400 661 2,310 33,100 9.7 4.21 55 4 10 12.0 0.76 5.0 34.5 Stage 2 1700 802 3,120 39,700 11.6 3.73 * 15% NaCl by Weight Ground Loop Fluid EAT 68 F (20 C) Standard Capacity Ratings - Ground Water Heating 60Hz ELT 50 F (10 C) Pressure Input Model Size Liquid Flow Mode Airflow Capacity COP Drop Energy H Tons IGAL USG L/s PSI kpa CFM L/s Watts BTU/Hr kw W/W Stage 1 1400 661 2,350 38,500 11.3 4.80 55 4 10 12.0 0.76 3.3 22.8 Stage 2 1700 802 3,370 49,900 14.6 4.34 Standard Capacity Ratings - Ground Loop Cooling* 60Hz STAGE 1 - ELT 68 F (20 C) EAT 80.6 F (27 C) STAGE 2 - ELT 77 F (25 C) Pressure Input Model Size Liquid Flow Mode Airflow Capacity COP Drop Energy c Tons IGAL USG L/s PSI kpa CFM L/s Watts BTU/Hr kw W/W Stage 1 1400 661 1,760 42,800 12.5 7.12 55 4 10 12.0 0.76 3.5 24.1 Stage 2 1700 802 2,990 51,800 15.2 5.08 * 15% NaCl by Weight Ground Loop Fluid EAT 80.6 F (27 C) Standard Capacity Ratings - Ground Water Cooling 60Hz ELT 59 F (15 C) Pressure Input Model Size Liquid Flow Mode Airflow Capacity COP Drop Energy c Tons IGAL USG L/s PSI kpa CFM L/s Watts BTU/Hr kw W/W Stage 1 1400 661 1,575 45,500 13.3 8.45 55 4 10 12.0 0.76 3.1 21.4 Stage 2 1700 802 2,625 58,300 17.1 6.50 25 MAY 2009 Page 16 000886SPC-02

Heating Mode RH-55-HACW-P-1T Nominal 4 ton R410a 60 Hz Source Data (Outdoor Loop) Power Consumption Sink Data (Indoor Loop) ELT Evap. Temp Flow LLT Delta T HAB Compressor Fan* Effective COPh EAT 25 MAY 2009 Page 17 000886SPC-02 Cond. Temp. Air Flow LAT Delta T Net Output F F Igpm F F BTU/Hr Watts Amps Watts Watts W/W F F CFM F F BTU/Hr C C L/min C C Watts C C L/s C C Watts 25.0 15 10.0 20.9 4.1 25,964 2,737 12.5 285 3,056 3.45 68 103 1,700 87.5 19.5 35,943-3.9-9.4 45.2-6.2 2.3 7,607 20.0 39.4 802 30.8 10.8 10,531 31.0 20 10.0 26.5 4.5 28,831 2,807 12.8 285 3,126 3.66 68 105 1,700 89.2 21.2 39,050-0.6-6.7 45.2-3.1 2.5 8,447 20.0 40.6 802 31.8 11.8 11,442 37.0 25 10.0 32.0 5.0 31,913 2,877 13.2 285 3,196 3.88 68 107 1,700 91.0 23.0 42,371 2.8-3.9 45.2 0.0 2.8 9,350 20.0 41.7 802 32.8 12.8 12,415 43.0 30 10.0 37.4 5.6 35,215 2,948 13.5 285 3,267 4.12 68 109 1,700 92.9 24.9 45,914 6.1-1.1 45.2 3.0 3.1 10,318 20.0 42.8 802 33.9 13.9 13,453 48.0 35 10.0 41.9 6.1 37,095 3,079 13.9 285 3,358 4.21 68 111 1,700 94.2 26.2 48,239 8.9 1.7 45.2 5.5 3.4 10,869 20.0 43.9 802 34.6 14.6 14,134 54.0 40 10.0 47.3 6.7 40,699 3,153 14.2 285 3,432 4.45 68 113 1,700 96.3 28.3 52,095 12.2 4.4 45.2 8.5 3.7 11,925 20.0 45.0 802 35.7 15.7 15,264 60.0 45 10.0 52.7 7.3 44,533 3,229 14.6 285 3,508 4.69 68 115 1,700 98.5 30.5 56,189 15.6 7.2 45.2 11.5 4.1 13,048 20.0 46.1 802 37.0 17.0 16,463 66.0 50 10.0 58.0 8.0 48,604 3,307 14.9 285 3,586 4.94 68 117 1,700 100.9 32.9 60,527 18.9 10.0 45.2 14.4 4.4 14,241 20.0 47.2 802 38.3 18.3 17,734 Compressor: ZPS40K4E-PFV * @ 37.3Pa (0.15inH2o) Ext. Static Cooling Mode RH-55-HACW-P-1T R410a 60 Hz Source Data (Indoor Loop) Power Consumption Sink Data (Outdoor Loop) EAT Evap. Temp Airflow LAT Delta T Latent Sensible HAB Compressor Efficiency Fan* Effective BTU/Hr BTU/Hr Watts Watts 14,834 44,502 4,346 13,039 14,494 43,481 4,247 12,740 14,425 43,276 4,227 12,680 14,060 42,180 4,120 12,359 13,182 39,547 3,862 11,587 12,812 38,437 3,754 11,262 12,681 38,044 3,716 11,147 12,284 36,852 3,599 10,798 ELT Cond. Temp. Flow LLT Delta T Rejection F F CFM F F BTU/Hr Watts Amps Watts Watts EER F F Igpm F F BTU/Hr C C L/s C C Watts COPc C C L/min C C Watts 80.6 45 1,700 56.4 24.2 59,336 2,100 9.1 310 2,392 24.8 51 75 10.0 62.3 11.3 67,562 27.0 7.2 802 13.6 13.4 17,385 7.27 10.6 23.9 45 16.8 6.3 19,795 80.6 45 1,700 57.0 23.6 57,975 2,244 9.7 310 2,536 22.9 56 80 10.0 67.1 11.1 66,693 27.0 7.2 802 13.9 13.1 16,987 6.70 13.3 26.7 45 19.5 6.2 19,541 80.6 46 1,700 57.1 23.5 57,701 2,392 10.4 310 2,684 21.5 61 85 10.0 72.2 11.2 66,924 27.0 7.8 802 13.9 13.1 16,906 6.30 16.1 29.4 45 22.3 6.2 19,608 80.6 46 1,700 57.7 22.9 56,240 2,542 11.0 310 2,834 19.8 66 90 10.0 77.0 11.0 65,976 27.0 7.8 802 14.3 12.7 16,478 5.81 18.9 32.2 45 25.0 6.1 19,331 80.6 47 1,700 59.1 21.5 52,730 2,589 11.6 310 2,891 18.2 74 95 10.0 84.4 10.4 62,623 27.0 8.3 802 15.1 11.9 15,450 5.34 23.3 35.0 45 29.1 5.8 18,348 80.6 47 1,700 59.7 20.9 51,249 2,743 12.3 310 3,045 16.8 79 100 10.0 89.3 10.3 61,670 27.0 8.3 802 15.4 11.6 15,016 4.93 26.1 37.8 45 31.8 5.7 18,069 80.6 48 1,700 59.9 20.7 50,725 2,906 13.0 310 3,208 15.8 84 105 10.0 94.3 10.3 61,700 27.0 8.9 802 15.5 11.5 14,862 4.63 28.9 40.6 45 34.6 5.7 18,078 80.6 48 1,700 60.6 20.0 49,136 3,076 13.8 310 3,378 14.5 89 110 10.0 99.1 10.1 60,691 27.0 8.9 802 15.9 11.1 14,397 4.26 31.7 43.3 45 37.3 5.6 17,782 Compressor: ZPS40K4E-PFV CAPACITY RATINGS * @ 37.3Pa (0.15inH2o) Ext. Static

Heating Mode (Part Load) RH-55-HACW-P-1T R410a 60 Hz Source Data (Outdoor Loop) Power Consumption Sink Data (Indoor Loop) ELT Evap. Temp Flow LLT Delta T HAB Compressor Fan* Effective COPh EAT 25 MAY 2009 Page 18 000886SPC-02 Cond. Temp. Air Flow LAT Delta T Net Output F F Igpm F F BTU/Hr Watts Amps Watts Watts W/W F F CFM F F BTU/Hr C C L/min C C Watts C C L/s C C Watts 27.0 20 10.0 24.0 3.0 19,135 2,177 10.0 150 2,377 3.30 68 101 1,400 85.7 17.7 26,794-2.8-6.7 45.2-4.4 1.7 5,606 20.0 38.3 661 29.8 9.8 7,850 33.0 25 10.0 29.6 3.4 21,691 2,156 9.9 150 2,356 3.64 68 102 1,400 87.3 19.3 29,277 0.6-3.9 45.2-1.3 1.9 6,355 20.0 38.9 661 30.7 10.7 8,578 39.0 30 10.0 35.2 3.8 24,468 2,132 9.8 150 2,332 4.02 68 103 1,400 89.1 21.1 31,975 3.9-1.1 45.2 1.8 2.1 7,169 20.0 39.4 661 31.7 11.7 9,369 45.0 35 10.0 40.7 4.3 27,477 2,108 9.7 150 2,308 4.43 68 104 1,400 91.0 23.0 34,901 7.2 1.7 45.2 4.8 2.4 8,051 20.0 40.0 661 32.8 12.8 10,226 50.0 40 10.0 45.2 4.8 30,785 2,179 9.7 150 2,339 4.80 68 105 1,400 93.4 25.4 38,455 10.0 4.4 45.2 7.3 2.7 9,020 20.0 40.6 661 34.1 14.1 11,267 56.0 45 10.0 50.6 5.4 34,296 2,153 9.6 150 2,313 5.29 68 106 1,400 95.6 27.6 41,877 13.3 7.2 45.2 10.4 3.0 10,049 20.0 41.1 661 35.3 15.3 12,270 62.0 50 10.0 56.1 5.9 38,071 2,127 9.5 150 2,287 5.82 68 107 1,400 98.1 30.1 45,564 16.7 10.0 45.2 13.4 3.3 11,155 20.0 41.7 661 36.7 16.7 13,350 68.0 55 10.0 61.4 6.6 42,121 2,102 9.4 150 2,262 6.40 68 108 1,400 100.7 32.7 49,529 20.0 12.8 45.2 16.3 3.7 12,341 20.0 42.2 661 38.1 18.1 14,512 Compressor: ZPS40K4E-PFV * @ 37.3Pa (0.15inH2o) Ext. Static Cooling Mode (Part Load) RH-55-HACW-P-1T R410a 60 Hz Source Data (Indoor Loop) Power Consumption Sink Data (Outdoor Loop) EAT Evap. Temp Airlow LAT Delta T Latent Sensible HAB Compressor Efficiency Fan* Effective BTU/Hr BTU/Hr Watts Watts 11,839 35,518 3,469 10,407 11,822 35,467 3,464 10,392 11,545 34,636 3,383 10,148 11,261 33,784 3,300 9,899 10,758 32,273 3,152 9,456 10,466 31,397 3,066 9,199 10,166 30,498 2,979 8,936 10,073 30,220 2,952 8,855 ELT Cond. Temp. Flow LLT Delta T Rejection F F CFM F F BTU/Hr Watts Amps Watts Watts EER F F Igpm F F BTU/Hr C C L/s C C Watts COPc C C L/min C C Watts 80.6 47 1,400 57.2 23.4 47,357 1,091 5.0 165 1,260 37.6 46 65 10.0 54.6 8.6 51,644 27.0 8.3 661 14.0 13.0 13,875 11.01 7.8 18.3 45 12.6 4.8 15,132 80.6 48 1,400 57.2 23.4 47,289 1,211 5.5 165 1,380 34.3 51 70 10.0 59.7 8.7 51,985 27.0 8.9 661 14.0 13.0 13,855 10.04 10.6 21.1 45 15.4 4.8 15,231 80.6 48 1,400 57.8 22.8 46,182 1,335 6.0 165 1,504 30.7 56 75 10.0 64.6 8.6 51,302 27.0 8.9 661 14.3 12.7 13,531 8.99 13.3 23.9 45 18.1 4.8 15,031 80.6 48 1,400 58.3 22.3 45,046 1,461 6.5 165 1,630 27.6 61 80 10.0 69.4 8.4 50,594 27.0 8.9 661 14.6 12.4 13,198 8.10 16.1 26.7 45 20.8 4.7 14,824 80.6 49 1,400 59.3 21.3 43,030 1,553 7.0 165 1,733 24.8 67 85 10.0 75.1 8.1 48,895 27.0 9.4 661 15.2 11.8 12,608 7.27 19.4 29.4 45 24.0 4.5 14,326 80.6 49 1,400 59.9 20.7 41,862 1,683 7.5 165 1,863 22.5 72 90 10.0 80.0 8.0 48,169 27.0 9.4 661 15.5 11.5 12,266 6.58 22.2 32.2 45 26.7 4.5 14,114 80.6 49 1,400 60.5 20.1 40,664 1,819 8.1 165 1,999 20.3 77 95 10.0 84.9 7.9 47,436 27.0 9.4 661 15.8 11.2 11,914 5.96 25.0 35.0 45 29.4 4.4 13,899 80.6 50 1,400 60.7 19.9 40,294 1,953 8.6 165 2,133 18.9 82 100 10.0 89.9 7.9 47,524 27.0 10.0 661 15.9 11.1 11,806 5.53 27.8 37.8 45 32.2 4.4 13,924 Compressor: ZPS40K4E-PFV CAPACITY RATINGS - continued * @ 37.3Pa (0.15inH2o) Ext. Static

ECM Fan Airflow Tables Model Nom. Size NOMINAL AIRFLOW SETTING (MED) STAGE 2 STAGE 1 FAN ONLY (Recirculation) Full Reduced* Full Reduced* Full Reduced* Tons CFM L/s CFM L/s CFM L/s CFM L/s CFM L/s CFM L/s 25 2 800 378 680 321 680 321 578 273 448 211 381 180 45 3 1200 566 1020 481 1030 486 876 413 672 317 571 270 55 4 1500 708 1275 602 1240 585 1054 497 840 396 714 337 65 5 1900 897 1615 762 1540 727 1309 618 1064 502 904 427 75 6 2100 991 1785 842 1660 783 1411 666 1176 555 1000 472 Model Nom. Size -6% AIRFLOW SETTING (LOW) STAGE 2 STAGE 1 FAN ONLY (Recirculation) Full Reduced* Full Reduced* Full Reduced* Tons CFM L/s CFM L/s CFM L/s CFM L/s CFM L/s CFM L/s 25 2 752 355 639 302 639 302 543 256 421 199 358 169 45 3 1128 532 959 453 968 457 823 388 632 298 537 253 55 4 1410 665 1199 566 1166 550 991 468 790 373 671 317 65 5 1786 843 1518 716 1448 683 1230 581 1000 472 850 401 75 6 1974 932 1678 792 1560 736 1326 626 1105 522 940 443 Model Nom. Size +6% AIRFLOW SETTING (HIGH) STAGE 2 STAGE 1 FAN ONLY (Recirculation) Full Reduced* Full Reduced* Full Reduced* Tons CFM L/s CFM L/s CFM L/s CFM L/s CFM L/s CFM L/s 25 2 848 400 721 340 721 340 613 289 475 224 404 191 45 3 1272 600 1081 510 1092 515 928 438 712 336 605 286 55 4 1590 750 1352 638 1314 620 1117 527 890 420 757 357 65 5 2014 951 1712 808 1632 770 1388 655 1128 532 959 452 75 6 2226 1051 1892 893 1760 830 1496 706 1400 661 1190 562 Model Nom. Size +12% AIRFLOW SETTING (MAX) STAGE 2 STAGE 1 FAN ONLY (Recirculation) Full Reduced* Full Reduced* Full Reduced* Tons CFM L/s CFM L/s CFM L/s CFM L/s CFM L/s CFM L/s 25 2 896 423 762 359 762 359 647 306 502 237 426 201 45 3 1344 634 1142 539 1154 544 981 463 753 355 640 302 55 4 1680 793 1428 674 1389 655 1180 557 941 444 800 377 65 5 2128 1004 1809 854 1725 814 1466 692 1192 562 1013 478 75 6 2352 1110 1999 944 1859 877 1580 746 1317 622 1120 528 NOTES: Unit sizes 25, 45 and 55 nominal value up to 0.50 inh2o, sizes 65 and 75 up to 0.70inH2o *To obtain the REDUCED airflow values use a dry contact to connect AR1 to AR2 on the terminal strip INFORMATION TAKEN FROM DOCUMENT 000527INF-03 25 MAY 2009 Page 19 000886SPC-02

LIMITED WARRANTY MARITIME GEOTHERMAL LTD. warrants that its geothermal heat pumps shall be free from defects in materials and workmanship for a period of FIVE (5) YEARS after the date of installation or for a period of FIVE (5) YEARS AND SIXTY (60) DAYS after the date of shipment, whichever occurs first. This warranty covers all internal components of the heat pump. An allowance is also provided for labour. Please see labor allowance schedule for information pertaining to labor coverage. MARITIME GEOTHERMAL LTD. shall, at its option, repair or replace any part covered by this warranty. Defective parts shall be returned to MARITIME GEOTHERMAL LTD., transportation charges prepaid. Replacement or repaired parts and components are warranted only for the remaining portion of the original warranty period. This warranty is subject to the following conditions: 1. The geothermal heat pump must be properly installed and maintained in accordance with MARITIME GEOTHERMAL LTD. guidelines. 2. The installer must complete the Startup Record and return it to MARITIME GEOTHERMAL LTD. within 21 days of unit installation. 3. For new construction, it is the responsibility of the building or general contractor to supply temporary heat to the structure prior to occupancy. Geothermal heat pumps are designed to provide heat only to the completely finished and insulated structure. Startup of the unit shall not be scheduled prior to completion of construction and final duct installation for validation of this warranty. 4. It is the customer's responsibility to supply the proper quantity and quality of water or properly sized ground loop with adequate freeze protection. If a geothermal heat pump manufactured by MARITIME GEOTHERMAL LTD. fails to conform to this warranty, MARITIME GEOTHERMAL LTD.'s sole and exclusive liability shall be, at its option, to repair or replace any part or component which is returned by the customer during the applicable warranty period set forth above, provided that (1) MARITIME GEOTHERMAL LTD. is promptly notified in writing upon discovery by the customer that such part or component fails to conform to this warranty; (2) the customer returns such part or component to MARITIME GEOTHERMAL LTD., transportation charges prepaid, within (30) thirty days of failure, and (3) MARITIME GEOTHERMAL LTD.'s examination of such component discloses to its satisfaction that such part or component fails to conform to this warranty and the alleged defects were not caused by accident, misuse, neglect, alteration, improper installation, repair or improper testing. MARITIME GEOTHERMAL LTD. will not be responsible for any consequential damages or labour costs incurred. In additional, MARITIME GEOTHERMAL LTD. will not be responsible for the cost of replacement parts purchased from a third party. 25 MAY 2009 Page 20 000886SPC-02