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Maritime
Geothermal Ltd.
NORDIC® models EM (DX) 45-55-65
Energy Module Heat Pumps
Heat Pump System Requirements .....
Conceptual Overview .........
Technology Explanation ........
Installing DX linesets ..................
Inside Installation ......................
Domestic Hot Water ...........................
Refrigerant Filled Copper Heat Exchanger Loop
Maritime Geothermal Ltd.
P.O. Box 413
Petitcodiac, N.B.
Direct Expansion
Table of Contents
3
Safety Controls ............
5
Starting the Heat Pump .......
7
Component Layout ................
11
Dimensions & Piping Layout
12
EM Internal Schematic
13
Min. Circuit Ampacity
Hot Water Output
E0A 2H0
Installation
Manual
Revision 1.5
14
Trouble Shooting Guide ..........
15
Performance Curves ...........
17
Setting the Aquastat ...........
19
Electrical Schematic .................... 29
20
Electric Block Diagram ......
20
Warranty ...................................... 31
Email: nordic@atcon.com
www.discribe.ca/nordic
17-Feb-00
21
24
27
30
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Summary of Contents for Maritime Geothermal NORDIC
- Page 1 Installation Maritime Geothermal Ltd. Manual Revision 1.5 17-Feb-00 NORDIC® models EM (DX) 45-55-65 Direct Expansion Energy Module Heat Pumps Table of Contents Heat Pump System Requirements ..Safety Controls ………... Trouble Shooting Guide ..Conceptual Overview ……… Starting the Heat Pump …….
- Page 2 17-Feb-00 Maritime Geothermal Ltd. A NORDIC® Direct Expansion Heat Pump System Energy Input: Solar Geothermal Storage System: Earth’s Mass Extraction & HEATING COOLING Rejection System: “EM” heat pump Heat Distribution: Infloor Heating Fan Coil Distribution Infloor Heating Fan Coil Ducted NORDIC®...
- Page 3 EMDX unit. A high water table in land area or vol- ume of earth from which to extract or Nordic® EMDX-45 will heat up to 140 m² reject heat. Nordic® EMDX-55 will heat up to 200 m² Nordic® EMDX-65 will heat up to 260 m²...
- Page 4 17-Feb-00 Maritime Geothermal Ltd. NORDIC® EMDX Series Typical Plumbing HOT Water OUT to home Domestic Water Tank Check Valve DX copper lines to outdoor loops Page ..4...
- Page 5 8. Back-up heat built in. As a result of direct urging from the engineering community, 9. Stainless Steel storage tank. Maritime Geothermal Ltd. has developed a unique new heat 10. Accurate temperature regulation. pump solution specifically targeted at buildings which employ infloor heating as the primary energy distribution system in 1.
- Page 6 17-Feb-00 Maritime Geothermal Ltd. NORDIC® Vertical EMDX - Typical Loop design NOTE: Layout for one borehole shown below. Actual installation re- quires one borehole per ton. (I.E. (3) holes for a EMDX-45, NORDIC® DX (4) holes for a EMDX-55 and “Energy Module”...
- Page 7 Less Maintenance exchanger loops. Only a sealed refrigeration circuit to maintain. The NORDIC® solution has been to start with a clean new concept and to design a unit from the ground up. We More Versatile started by developing an evaporator system that would yield the best performance to pressure drop factor and which would “EMDX”...
- Page 8 17-Feb-00 Maritime Geothermal Ltd. Piping Layout of Vertical Style DXW Vertical Loop HOME Page ..8...
- Page 9 700 kPa (+- 30 kPa) If a when it arrives. loop is not within this tolerance, it should be set aside for re- testing or returned to NORDIC® for replacement. Under no Optimum Placement circumstances should a copper groundloop be used if there is any question that it may not be pressure tight.
- Page 10 17-Feb-00 Maritime Geothermal Ltd. NORDIC® EMDX Horizontal Trench Design Page ..10...
- Page 11 Maritime Geothermal Ltd. 17-Feb-00 plished with a tracked excavator equipped with a 1 to 1.3 m Entering dwelling bucket. If a wider bucket is available and you can afford the extra cost, the trenches could be wider for improved perform- The copper groundloops must enter the dwelling at some ance.
- Page 12 17-Feb-00 Maritime Geothermal Ltd. Horizontal EMDX Loop Field (Plan View) Page ..12...
- Page 13 The NORDIC® heat pump has two built in safety controls the inside of the copper tubing. which are designed to protect the unit from situations which could damage it.
- Page 14 17-Feb-00 Maritime Geothermal Ltd. NORDIC® EMDX Pit Heat Exchanger Layout ONE LOOP PER “TON” REQUIRED Diagram at left shows another possible configuration for a horizontal DX piping system. • Each loop should encompass about 230 m to 325 m of land area per “ton”...
- Page 15 6. At the electrical disconnect switch place the amprobe The NORDIC® unit is supplied with an opening for 19 jaws around the supply wires and record the current in mm conduit nipple on the right side of the unit. An additional each conductor and record this current.
- Page 16 17-Feb-00 Maritime Geothermal Ltd. connected to the common suction inlet line and it’s controller Vertical DX Borehole With Cop- bulb attached to the vapor inlet line (hot in heating mode) of per “U” Tube the air handler. Liquid refrigerant then travels towards the liq- uid line header, solenoid valve and check valve assembly.
- Page 17 Maritime Geothermal Ltd. 17-Feb-00 EMDX Left Expansion Tank Domestic Water (In) Domestic Water (Out) Main Hot Water (Out) Main Hot Water (In) Liquid Lines Vapor Lines Expansion Valves 40 Gal. Stainless Distribution Tank Electric Heat Elements (3 x 3KW) EMDX Front Side Ranco®...
- Page 18 17-Feb-00 Maritime Geothermal Ltd. NORDIC® Series EMDX-45-55-65-HW Engineering and Performance Data Feb 00 Page ..18...
- Page 19 Maritime Geothermal Ltd. 17-Feb-00 Maritime Geothermal Ltd. Revision 4.35 Color: Caissie Grey EM Direct Expansion-to-Water Heat Pumps Models: EMDX-45-65 Style: Horizontal Date: Feb 1999 Drawn By: G. Kaye Title: Piping / Electrical & Dimensions LEFT SIDE VIEW Page ..19...
- Page 20 17-Feb-00 Maritime Geothermal Ltd. Maritime Geothermal Ltd. Revision 4.35 Color: Caissie Grey Energy Module DX Heat Pumps Models: EMDX 45-65 Style: Horizontal Date: June 1998 Drawn By: G. Kaye Title: Refrigerant Circuit Diagram Heat Pump Electrical Service Requirements Second row lists requirements with 9KW internal back-up heat installed...
- Page 21 Maritime Geothermal Ltd. 17-Feb-00 NORDIC® EMDX Heat Pump Trouble Shooting Fault Possible Cause Verification Recommended Action Power Failure Electric circuit test shows no voltage Check for blown fuse at heat pump’s Compressor not on the line side of compressor con-...
- Page 22 17-Feb-00 Maritime Geothermal Ltd. Fault Possible Cause Verification Recommended Action • Open control circuit. Locate open control and determine Compressor not Thermostat not calling for heat. • cause. Replace faulty control if nec- operating High or low pressure limit open.
- Page 23 Maritime Geothermal Ltd. 17-Feb-00 Fault Possible Cause Verification Recommended Action DOMESTIC Circulator pump not operating. Use an amprobe to measure current Replace if faulty. Heat pump not operating. draw. HOT WATER Switch set to “OFF” Observe any shut-off valves for loca-...
- Page 24 17-Feb-00 Maritime Geothermal Ltd. Performance Specification Sheets Model EMDX-45-HW Heating Mode Soil Btu's Comp. Comp. Suct. Disch. Temp. Flow Amps Watts Watts Pres. Pres. 45163 109.9 59556 19.4 3640 4045 40104 108.9 53285 18.7 3489 3896 37560 108.6 51532 18.4...
- Page 25 29447 106.7 40126 15.9 3256 3581 Water flow in IGPM Temperatures in °F Btu Out Vs. Ground Temperature - Nordic EMDX-55 80000 60000 40000 20000 Ground Temperature in Deg. F. COP Vs. Ground Temperature - Nordic EMDX-55 Ground Temperature in Deg.F.
- Page 26 108.3 49725 22.2 4491 4903 2.97 38.8 Water flow in IGPM Temperatures in °F Btu Output Vs. Ground Temperature - NORDIC EMDX-65 100000 50000 Ground Temperature - Deg. F. COP Vs. Ground Temperature - Nordic EMDX-65 4.00 3.00 2.00 1.00 0.00...
- Page 27 Maritime Geothermal Ltd. 17-Feb-00 Ranco® ETC Thermostat Controls The Ranco® ETC is a microproc- stage1 cooling or heating mode. essor-based electronic temperature The LCD will display the current control designed to handle the mode, either C1 for cooling or H1 OFF/ON functions of the NOR- for heating.
- Page 28 17-Feb-00 Maritime Geothermal Ltd. Ranco® ETC PC Thermostats 8 ft. extension cable Cover screws (4) Temperature sensor Circuit board Locking switch NOTE: Mounting Holes Shown The temperature “sensor” Below can be extended up to 400 ft. by cutting the sen-...
- Page 29 Maritime Geothermal Ltd. 17-Feb-00 NORDIC® EMDX-45-55-65-HW Series - Schematic 208v/3ph/60Hz Greyed Circled Items (Optional) Page ..29...
- Page 30 17-Feb-00 Maritime Geothermal Ltd. NORDIC® EMDX-HW Series Electrical Box 208v/3/60 Box – Heating & Domestic Hot Water Versions NOTE (A) Electric Heat Back-up is Electric Heat Breaker & Relay An option which can be activated or deactivated by the customer by discon- necting the breaker as re- quired.
- Page 31 2. The installer must complete the “Installation Data 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 supply tempo- rary heat to the structure prior to occupancy.
- Page 32 17-Feb-00 Maritime Geothermal Ltd. Maritime Geothermal Ltd. has the solution for all your heating and cooling projects Vertical Liquid-to-Air Liquid-to-Liquid Horizontal Slim Liquid-to-Air Split Systems NORDIC® — Environmentally sound solutions to today’s Heating and Cooling needs. Page ..32...