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Figure 6: Staging Dip Switches
Figure 5b: Power Wiring, Single Circuit, 12, 15, 20kw
Figure 5c: Power Wiring, 4, 5, 8, and 10kw
ON
OFF
ON
OFF
1
2
3
4
P1
In 15 and 20 kW units
two power circuits are
employed to reduce wires
size and cost of breakers
L1
L2
L3
L4
P2
Conduit
Auxiliary Electric Heat Start-up
Put thermostat in emergency heat mode (or jumper t-stat
input R to W and R to G) and setpoint to high setting.
Momentarily short the test pins (do not jumper the test
pins) of the
D
XM control to place it in test mode to
reduce time delays. Unit will require 15-20 seconds
before engaging emergency heat mode stage 1 (W1) and
then another 15-20 seconds to engage stage 2 (W2) when
in ‘Test mode’. Verify proper electric heat operation.
Figure 5a: Power Wiring, Dual Circuits, 12, 15, 20kw
In 12, 15 and 20 kW units, optional single power circuit is employed to reduce the
number of wires needed. Optional single unit adapter kit part number 16B0002N02.
ER1
ER2
ER1
ER2
ER3
ER4
For HGM/L 4, 5, 8, 10kW.
For HGL 12, 15, and 20kW.
