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7. U SING OPTIONAL EQUIPMENT
7.1 TWO-STAGE OR OUTDOOR THERMOSTAT
(The SEASON SELECT switch must be in the MILD position).
These controls can be used on all furnaces except 10 kW model.
Follow the directions supplied with the two-stage or outdoor thermostat
in conjunction with the furnace wiring diagram. When used, the
furnace stage will supply heat as follows in the opposite chart:
Model First Stage (kW) Second Stage (kW)
10 kW
10 —
15 kW 10 5
18 kW 9 9
20 kW 10 10
25 kW 15 10
27 kW 13.5 13.5
7.2 AIR CONDITIONING
Your furnace is equipped with all the controls required for the addition
of air conditioning (except the heat-cool thermostat).
The evaporator coil may be installed by a local contractor in sheet
metal plenum of his own manufacture. The coil should be located:
centred over the “chimney” of the furnace 4” (102 mm) to 6” (152 mm)
above the top of the furnace.
Make sure no air is allowed to bypass the cooling coil during cooling
operation. If the discharge opening is a great deal larger than the
coil, and the ductwork is correspondingly larger than the coil, you
may want to use a bypass damper for heating. The damper would be
closed in summer, directing all air flow through the coil. In winter the
damper would be open to allow air to bypass the coil.
Typical air-conditioning field wiring connections are shown in the
diagram at right.
FURNACE
THERMOSTAT
CONDENSER
FE0001A
WIRING COLOR CODE
CGRW1W2 Y
COMMON GREEN RED WHITE
WHITE (BLUE
OPTIONAL)
YELLOW
7.3 ELECTRONIC AIR CLEANERS AND/OR POWERED FURNACE HUMIDIFIERS
These units operate at 120 V. Your 240 V furnace is designed so that Model FK120 adaptor kit can be mounted inside the furnace to supply the
required 120 V. Instructions for mounting and wiring are included with the kit. FK120 kit is not available for 83B 208 V three-phase models.
7.4 INTERLOCK CONNECTION
When the electric furnace is used in combination with another device
(as for example, a wood burning furnace), it is recommended to perform
the connection by referring to the wiring diagram at right. The burning
furnace thermostat will then turn automatically on the blower in the
electric furnace.
Also, please note that Norton has developped a low speed interlock
kit; the FIK (Furnace Interlock Kit). This kit is specially designed to
interlock the furnace operation with a ventilation fan or an HRV unit.
R
G
24 VAC
Power Output
Call for FAN
Furnace
Furnace
Thermostat
G
R
Relay
NC
NO
COM
External Request
for Fan Activation
FE0034A
Electric Furnace
System
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