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Maritime Geothermal Ltd.
12-Feb-00
NORDIC® “DX” Series Electrical Box Connections
15 KW
Model
Minimum Circuit
Ampacity
Recommended
Wire Size
TD Fuse or
Breaker
Thermostat Wire
Plenum Heater
230 / 1 / 60
DX-45
29
8-3
40
18-8
61.5 Amps
DX-55
32
8-3
40
18-8
@ 230 v AC
DX-65
37
6-3
50
18-8
Heat Pump Electrical Service Requirements -
230v / 1ph / 60Hz.
Low Voltage (24v)Wiring
Use an (18-8) thermostat cable.
Connect C,G, Y/Y
2
, R, L, W/W
1
, O/
W
2,
B
in terminal box to the corre-
sponding letters on the thermostat sup-
plied.
C- common
G - blower relay
Y/Y
2
- compressor
R - 24v hot supply
L - compressor lock-out light
O/W
2
- reversing valve
B - heating mode
Plenum Heater Connections
(use 18-4 t’stat wire)
“FF”
to“
FF”
in heater ( fan on/off)
“
I 1”
to
“I 1”
in heater (heat on/off)
Hot Water Circulator
Special Instructions
Note: If heat pump is to be operated
without the hot water circulator con-
nected to the water tank and flooded
with water, remove the wire marked
with
RED
tape located here.
This pump is water lubricated and
must not be run dry.
230/115v / 1 / 60 connections
Wire to lugs on compressor relay:
•
Connect L3 to (Black)
•
Connect L2 to (White) neutral
•
Connect L1 to (Red)
•
Connect GND to GND lug.
Neutral
Black
Red
