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7/8" DIA. HOLE
HIGH LIMIT
CONTROL
Install warm air plenum and cut hole for high limit
control. Refer to Figure 22.
Refer to wiring diagram Figure 23 and 25.
A. Mount control transformer.
B. Mount high limit control.
C. Mount low limit control.
D. Mount electronic control.
E. Connect thermocouple to terminals (white lead to
– red lead +).
F. Connect conduit from draft control box to fan
junction box with conduit nut and connect wires.
G. Run conduit from transformer to low limit switch
and fan junction box, Figure 26.
LEVEL
THERMOSTAT WIRE
Figure 24
BOX 422 • TOWER, MN 55790 • USA • Tel (218) 753-2330 • www.lamppakuuma.com
6.25"
17.75"
AIR SUPPLY
7.5"
PLENUM
Figure 22
THERMOSTAT BASE
THERMOSTAT
H. Add wires as shown in Figure 23 and connect.
I.
Mount thermostat in house and connect to relay
control (24 VAC). Refer to Figure 23.
J. Connect wiring to fans in fan enclosure as shown
in Figure 23.
K. Run incoming conduit to transformer junction
box and connect to a separate circuit breaker
panel. Use a 15 amp AWG copper wire to the fur-
nace. Ground the furnace to the electrical system
ground.
L. We recommend that a licensed electrician do the
electrical wiring.
M. With wiring completed, check the system by
turning on the power. The light on the electronic
control should energize. The draft control will re-
main closed until the thermocouple is heated to
approximately 100-120 degrees F.
RIGHT SIDE
TRANSFORMER
SMOKE PIPE
Figure 25
13
ELECTRONIC
FRONT COVER
DRAFT
CONTROL
LEFT
SIDE
CONDUIT
TUBING
DRAFT
DAMPER
ASSEMBLY
HIGH LIMIT
CONTROL
LOW LIMIT CONTROL
DAMPER ADAPTOR BOX
FAN JUNCTION BOX
FAN HOUSING BASE
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