Nortron B SERIES Installation And Operating Instructions Manual - page 5
5
USING OPTIONAL EQUIPMENT
1. A TWO-STAGE OR OUTDOOR THERMOSTAT
(The SEASON SELECT switch must be in the M
ILD
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:
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
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 following diagram:
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.
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 below. 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.
MAINTENANCE
MOTOR: The motor is lubricated for life and needs no oiling.
FILTERS: Size is 20” x 20” x 1” (508 mm x 508 mm x 25 mm).
Should be inspected and replaced when dirty.
Ordinarily replacement is required twice per heating
season and, perhaps, a third time if continuous
blower operation is used.
NOTE: Each element has an automatic reset thermal
cut-out which is set to open at 160°F (71°C). If it opens,
the element will be de-energized until the cut-out resets
itself. In addition to that, there are 2 manual reset thermal
cut-out that open at 200°F (93°C). In a case of a
manual reset cut-out being open, a front panel needs to
be removed so the cut-out can be manually reset.
The reason for the failure should be investigated before
re-starting the furnace. The limit usually opens when
airflow is reduced because of blocked ductwork or very
dirty filters.
FURNACE
THERMOSTAT
CONDENSER
FE0001A
WIRING COLOR CODES
C
G
R
W1
W2
Y
COMMON GREEN
RED
WHITE
WHITE
(BLUE
OPTIONAL)
YELLOW
WARNING
!
Cut 240 V supply before removing the front panel!
R
G
24 VAC
Power Output
Call for FAN
Furnace
Furnace
Thermostat
G
R
Relay
NC
NO
COM
External Request
for Fan Activation
Electric Furnace
System