Maritime Geothermal EM (DX) 45-55-65 Installation Manual Download Page 1

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Maritime Geothermal Ltd.
P.O. Box 413
Petitcodiac, N.B.      E0A 2H0

Maritime

Geothermal Ltd.

NORDIC® models EM (DX) 45-55-65

Direct Expansion

Energy Module Heat Pumps

Refrigerant Filled Copper Heat Exchanger Loop

Hot Water Output

Heat Pump System Requirements .....

Safety Controls ………...

Trouble Shooting Guide ..........

Conceptual Overview ………

Starting the Heat Pump …….

Performance Curves ………..

Technology Explanation ……..

Component Layout ................

Setting the Aquastat ………..

Installing DX linesets ..................

Dimensions & Piping Layout

Electrical Schematic ..........………. 29

Inside Installation ………………….

EM Internal Schematic

Electric Block Diagram …...

Domestic Hot Water ........................... 13

Min. Circuit Ampacity

Warranty ............................………. 31

Table of Contents

Installation

Manual

Revision 1.5 17-Feb-00

Email: [email protected]

www.discribe.ca/nordic

Summary of Contents for EM (DX) 45-55-65

Page 1: ...e Shooting Guide 21 Conceptual Overview 5 Starting the Heat Pump 15 Performance Curves 24 Technology Explanation 7 Component Layout 17 Setting the Aquastat 27 Installing DX linesets 11 Dimensions Pipi...

Page 2: ...pansion Heat Pump System Energy Input Solar Geothermal Storage System Earth s Mass Extraction Rejection System EM heat pump Heat Distribution Infloor Heating Fan Coil Distribution NORDIC DX Energy Mod...

Page 3: ...pump Unless you are sure there will be sufficient moisture pre sent in the loop field area during the summer a soaker hose is recommended in all horizontal trench systems which will used for air condi...

Page 4: ...Page 4 Maritime Geothermal Ltd 17 Feb 00 NORDIC EMDX Series Typical Plumbing Domestic HOT Water Tank HOT Water OUT to home DX copper lines to outdoor loops Check Valve...

Page 5: ...ost of these components were outside the heat pump and had to be procured and in stalled by the plumber Energy Machines are superior to a built up system in the following ways 1 Installed first cost i...

Page 6: ...heat pump to approx 1 m down the drop pipes in the vertical boreholes Install spacers to keep the pipes separated as far as possible from one another in the boreholes Install 30 to 35 m of dual tubin...

Page 7: ...gerant re quired during the cooling operation but not needed during the heating mode 6 Inefficient and ineffective method to account for vastly varying condenser capability depending on ground tem per...

Page 8: ...Page 8 Maritime Geothermal Ltd 17 Feb 00 Piping Layout of Vertical Style DXW Vertical Loop HOME...

Page 9: ...ll distribute the weight of the NOR DIC unit evenly over the Styrofoam This process will also deaden the compressor noise emitted from the bottom of the cabinet As an alternative several pieces of 50...

Page 10: ...Page 10 Maritime Geothermal Ltd 17 Feb 00 NORDIC EMDX Horizontal Trench Design...

Page 11: ...un the pipe insulated up the outside wall making a 90 degree turn above ground and entering the dwelling between the floor joists just below the first floor These pipes should be insu lated with a min...

Page 12: ...Page 12 Maritime Geothermal Ltd 17 Feb 00 Horizontal EMDX Loop Field Plan View...

Page 13: ...ire system should be pressurized to 700 kPa with dry nitrogen and all joints made by the installer checked for leaks using soap suds or some other technique that the installer feels comfortable with I...

Page 14: ...e a excavated area or an existing area which needs to be filled as part of general excavation Loops should be buried approxi mately 2 m underground for best performance Example Nordic DX 45 should hav...

Page 15: ...lectrical panel 7 Have the following tools on hand and know how to use them A refrigeration gauge set An electronic or other accurate thermometer An amprobe 1 Connect your refrigeration gauge set 2 Tu...

Page 16: ...ses straight through the valve to ports G where it exits to the vapor line header From the vapor line header the refrigerant gas enters the reversing valve at point H and exits to the common suction l...

Page 17: ...in Hot Water In Expansion Tank Expansion Valves 40 Gal Stainless Distribution Tank Electric Heat Elements 3 x 3KW Ranco 2 stage Digital Aquastat EMDX Front Side Compressor Contactor Right Electric Hea...

Page 18: ...Page 18 Maritime Geothermal Ltd 17 Feb 00 NORDIC Series EMDX 45 55 65 HW Engineering and Performance Data Feb 00...

Page 19: ...Ltd 17 Feb 00 Maritime Geothermal Ltd Date Feb 1999 Revision 4 35 Color Caissie Grey EM Direct Expansion to Water Heat Pumps Models EMDX 45 65 Style Horizontal Drawn By G Kaye Title Piping Electrical...

Page 20: ...p Electrical Service Requirements Second row lists requirements with 9KW internal back up heat installed Model EMDX 45 HW EMDX 55 HW EMDX 65 HW Voltage 230 1 208 3 230 1 208 3 230 1 208 3 Min Circuit...

Page 21: ...eter shows no resistance be tween common and run terminals or between common and start terminals Note Be sure compressor overload has had a chance to reset If comp is hot this may take several hours D...

Page 22: ...erant level Refrigeration gauges show suction pressure dipping below 138 kPa Check refrigerant level Add refrig erant slowly Check for possible leaks Normal charge is 1 8 kg per ton Faulty low pressur...

Page 23: ...age or restriction in the water line or hot water heat exchanger Check water flow and power to pump Check water lines for obstruc tion Remove obstruction in water lines Acid treat the domestic hot wat...

Page 24: ...3296 3697 3 9 62 250 45 32607 100 107 6 10 45594 17 3 3178 3584 3 7 57 240 41 30635 100 107 3 10 43956 17 4 3129 3543 3 6 54 234 35 26674 100 106 3 10 38008 16 6 2963 3378 3 3 45 219 30 22677 100 106...

Page 25: ...108 9 10 53868 18 8 3943 3 4 356 4288 3 7 60 250 45 38208 100 108 3 10 49602 18 4 3764 3 4 329 4083 3 6 54 240 40 35795 100 107 8 10 46611 17 6 3594 3 5 338 3923 3 5 50 230 35 31942 100 107 1 10 4239...

Page 26: ...9 27 8 5721 4 2 413 6134 3 37 62 8 245 50 46511 100 111 2 10 67164 26 7 5428 4 1 414 5842 3 37 57 2 234 45 42117 100 110 4 10 62200 25 4 5173 4 1 415 5588 3 26 52 4 224 40 38521 100 109 7 10 58167 24...

Page 27: ...setting Step4 Press the SET key again to access the stage1 cooling or heating mode The LCD will display the current mode either C1 for cooling or H1 for heating Then press the UP or DOWN key to toggle...

Page 28: ...1 relay 24v Power Connection Stage 1 NC NO C Stage 2 NC C NO Cover screws 4 Mounting Holes Shown Below NOTE The temperature sensor can be extended up to 400 ft by cutting the sen sor extension cable...

Page 29: ...Page 29 Maritime Geothermal Ltd 17 Feb 00 NORDIC EMDX 45 55 65 HW Series Schematic 208v 3ph 60Hz Greyed Circled Items Optional...

Page 30: ...208v 3 60 Box Heating Domestic Hot Water Versions NOTE A Electric Heat Back up is An option which can be activated or deactivated by the customer by discon necting the breaker as re quired To disconne...

Page 31: ...a Sheet have it endorsed by the owner and return it to Maritime Geothermal Ltd within 21 days after the in stallation of the unit 3 It is the responsibility of the building or general contractor to su...

Page 32: ...Environmentally sound solutions to today s Heating and Cooling needs NORDIC NORDIC Maritime Geothermal Ltd has the solution for all your heating and cooling projects Vertical Liquid to Air Liquid to L...

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