Circulating Air Blower - International comfort products N9MP1 User's Information Manual

3. Smoke from the fireplace won't draw up the
chimney.
!
If you experience headaches, nausea, or dizziness,
carbon monoxide may be present.
Leave the house immediately and call your gas sup-
plier.
Carbon monoxide poisoning can result in death
from asphyxiation or serious bodily injury.
Combustion Air Checks
If any of the signals are noticed, perform a combustion air check or
call a service technician. If you add weather stripping, storm win-
dows, insulation, an additional fuel burning appliance, or remodel
the structure, a combustion air check MUST be accomplished af-
ter the addition.
Make the inspection as follows:
1. Close all doors and windows. If you have a fireplace, start a
fire and wait until flames are burning vigorously.
2. Turn on all exhausting devices, such as: kitchen and bath-
room exhaust fans and dryers (gas or electric).
3. Turn on all vented gas appliances, such as: heating equip-
ment (includes any room heaters) and water heaters.
4. Wait ten (10) minutes for drafts to stabilize.
5. On appliances with a draft hood, check for spillage by hold-
ing a lighted match 2 inches from the draft hood opening.
Reference Figure 1 which shows a water heater draft
hood.
Water Heater Draft Hood
Figure 1
Vent Pipe
Typical Gas
Water Heater
A. Match flame pulls toward draft hood.
This indicates no spillage and that appliance is getting
enough air for combustion. Return exhausting devices and
appliances to the condition you found them .
B. Match goes out or flame wavers away from draft hood. This
indicates spillage and that appliance is not getting enough
air for combustion.
!
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 2² ² ² ² ) near the ap-
pliance until a permanent air duct is installed. Con-
tact a qualified service agency.
Carbon monoxide poisoning can result in death
from asphyxiation or serious bodily injury.
4
Draft Hood
Match
User's Information Manual
If draft hood spillage is indicated:
1. Check for plugged flue 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 perma-
nent 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 sup-
ply fresh air by a permanent duct. Circuit breakers for fans
should be turned off.
4. Spillage means air starvation and a fresh air duct or air in-
takes must be installed to provide air directly to the area
around the unit. These MUST comply with local and state
building codes or in their absence with the National Fuel
Gas Code NFPA 54 ANSI Z223.1, current edition or in Can-
ada the National Standard CAN/CGA 1--B149.
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
outside to the unit 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 Unit
Figure 2 shows the location of the components in the unit.

Circulating Air Blower

The blower circulates room air through the unit, air ducts, and into
the rooms of the structure. The blower can be set at the thermostat
for automatic or manual operation. In manual mode the blower op-
erates 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 unit will
shut off. The blower will continue to run until the unit cools down.
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