User’s Information Manual
5
441 02 2011 00
B.
Match goes out or flame wavers away from draft hood.
This
indicates spillage and that appliance is not getting enough air
for combustion.
CARBON MONOXIDE POISONING HAZARD.
Carbon monoxide poisoning could result in death
from asphyxiation or serious personal injury.
Draft hood spillage means there is not enough air
for proper combustion and carbon monoxide may
be present.
Keep a window open (a minimum of 2
²²²²
) near the
appliance until a permanent combustion air duct is
installed. Contact a qualified service agency.
!
WARNING
If draft hood spillage is indicated:
1. Check for plugged vent connectors and chimneys. Repair
stoppage and test again.
2. If you have a fireplace, open a window or door near the fire-
place and then check for spillage.
If spillage stops, do not use the fireplace until you can supply
fresh air by a permanent duct.
3. If you have kitchen and bathroom exhaust fans, turn them
OFF
and check for spillage.
If spillage stops, do not use exhaust fans until you can supply
fresh air by a permanent duct. Circuit breakers for fans
should be turned off and marked as to why they are off.
4. Spillage means air starvation and that an outdoor air duct or
air intake must be installed to provide air directly to the area
around the furnace. This duct or intake MUST comply with lo-
cal and state building codes or in their absence with the Na-
tional Fuel Gas Code NFPA 54/ANSI Z223.1--2002 in the
U.S., or the National Standard of Canada, Natural Gas and
Propane Installation Code CSA B--149.1--00 in Canada.
Indoor Humidity (Your Comfort)
Relative humidity is important to your health. Proper humidification
helps cut down incidences of respiratory illness. Air that is too wet
may damage the building structure. Air that is too dry is uncomfort-
able. A quick way to test for proper humidity is as follows:
1. Look for frequent fogging or excessive condensation on the
inside of windows. This indicates the indoor humidity level is
too high for outdoor weather conditions.
2. Drop three ice cubes into a glass of water and stir. If, within
three minutes, moisture does not form on the glass, the air is
too dry and a humidifier would be beneficial. (Do not perform
this test in the kitchen, cooking vapors may produce inaccu-
rate results.)
A good relative humidity is one just high enough to barely start con-
densation along the lower edges or lower corners of the windows,
when it is cold outside. More than that can be damaging.
If the humidity is too high, try these suggestions to lower the humid-
ity:
1. Reduce setting or discontinue use of humidifier.
2. Use range and bathroom exhaust fans while cooking and
bathing. Open a door or window for a few minutes to bring in
cool drier air.
3. Cook with pans covered.
4. Take shorter baths or showers with cooler water.
5. Install a fresh air intake duct. Cold, dry air brought in from out-
side to the furnace area lowers the indoor humidity level.
6. Have appliances checked. A malfunctioning appliance can
contribute water vapor to the structure.
7. If the problem continues, consult a heating contractor about
adding a heat recovery ventilator or air--to--air heat exchang-
er.
About Your Furnace
Figure 3
or
Figure 4
shows the location of the components in the
furnace.
Circulating Air Blower
The blower circulates room air through the furnace, air ducts, and
into the rooms of the structure. The blower can be set at the thermo-
stat for automatic or manual operation. In manual mode the blower
operates continuously. In automatic, the blower does not come on
until a preset time after the gas valve is energized. When the struc-
ture reaches the temperature set on the thermostat, the furnace will
shut off. The blower will continue to run until the furnace cools down.
Thermostat
There are many types and styles of thermostats. Most thermostats
control both heating and cooling functions and have a Fan Switch
with
AUTO
and
ON
settings. On
AUTO
, the Circulating Air Blower
will cycle on/off with the furnace on the heating speed unless a call
for cooling is initiated. Blower speed will correspond to the mode of
operation of the furnace. If the Fan Switch is positioned to
ON
the
blower will run continuously.
In addition some thermostats are programmable with multiple set
backs. The set backs can be pre--programmed to lower or raise the
temperature automatically.
Be sure to become familiar with your thermostat.
Rating Plate
The rating plate contains important information for the service tech-
nician and lists the complete model, manufacturing and serial num-
bers. You should always provide all these numbers when
requesting parts or if you need service. See
Figure 3, Figure 4
or
Figure 5
for rating plate location.
Door Interlock Switch
All the electrical power for the furnace goes through the door inter-
lock switch. The interlock switch interrupts electrical power to the
furnace when the blower door is removed. The furnace will not oper-
ate until the blower door is reinstalled.
Furnace Control
The furnace control provides power to the circulating air blower to
keep it on until the furnace cools down.
The fan off--delay setting can be adjusted if the fan remains on long
enough that cool drafts are felt in the room after the furnace shuts
off.
The off--delay is set by moving a set of switches (2--stage) or jumper
(1--stage) on the control. The Wiring Diagram located on the inside
of the blower door shows the various delay combinations. Refer to
Figure 3
or
Figure 4
for location of the control.
If you are unsure how to set the Off--delay Control, contact a Quali-
fied Service Agency.
