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and draft regulator) should be set to -0.02
w.c.
8. FAN AND LIMIT CONTROL
The L6064A temperature sensitive fan switch is
actuated by a helical bi-metal sensing
enclosed in a metal guard,
circulating air blower. This provides a delay
between the burner ignition and blower start-up
to eliminate excessive flow of cold air when
blower comes on. Blower shutdown is also
delayed to remove any residual heat from the
heat
exchanger and improve the annual
efficiency of the furnace. Fan on settings of 110º
F to 130º F (43º C to 55º C) and fan off
of 90º F to 100º F (32º C to 37ºC) will usually be
satisfactory.
9. ELECTRICAL CONNECTIONS
The furnace is listed by CSA to the North
American standard. The furnace is factory wired
and requires minimal field wiring. In the United
States, the wiring must be in accordance with the
National Fire Protection Association NFPA-70,
National Electrical Code, and with local codes
and regulations. In Canada, all field wiring
should conform to CAN/CSA
Electrical Code, Part 1, and by local codes,
where they prevail.
The furnace should be wired to a separate and
dedicated circuit in the main
however,
accessory
electronic air cleaners and humidifiers may be
included on the furnace circuit. Although a
suitably located circuit breaker can be used as a
service switch, a separate service
advisable.
element
and controls the
the
settings
C22.1 Canadian
electrical panel;
equipment such as
switch is
in.
Furnace Power Requirements
Furnace Model
All Models
Accessories requiring 120 VAC power sources
such as electronic air cleaners and
transformers may be powered from the furnace
circuit, but should have their own controls. Do
not use the direct drive motor connections as a
power source, since there is a high risk of
damaging the accessories by exposure to high
voltage from the auto-generating windings of the
direct drive motor.
Thermostat
wiring connections and air
conditioning contactor low voltage
are shown in the wiring diagram in Appendix B.
Some
micro-electronic
additional controls and wiring. Refer to
thermostat manufacturer's instructions.
The thermostat should be located approximately
5 feet above the floor, on an inside wall where
there is good natural air circulation, and where
the thermostat will be exposed to average room
temperatures.
thermostat will be exposed to cold
from nearby lamps and appliances, exposure to
sunlight, heat from inside wall stacks, etc.
The thermostat heat anticipator should be
adjusted to the amperage draw
control circuit as measured at the
terminals of the thermostat. To reduce the risk of
damaging the heat anticipator, do not
this current with the thermostat connected to the
circuit. Measure the amperage by connecting an
ammeter between the two wires that will connect
to the thermostat "R" and "W" terminals.
10. HUMIDIFIER
A humidifier is an optional accessory available
through
most
Installation should be carried out in accordance
with the humidifier manufacturer's installation
instructions. Water or water droplets from the
humidifier should not be allowed to come into
contact with the furnace heat exchanger. Do not
use direct drive motor connections as a
of power for 120 VAC humidifiers and humidifier
transformers.
11. PIPING INSTALLATION
5
Volts
Amps
AC
120
15
connections
thermostats require
Avoid locations where the
drafts, heat
of the heating
"R" and "W"
heating supplies outlets.
Hz
∅
1
60
humidifier
the
measure
source
152B0801
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