Service manual

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2-6
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In installations where the exhaust system is not
described in the charts, the following method
must be used to determine if the exhaust system
is acceptable: (See Figure 2-4)
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1. Connect an inclined or digital manometer
between the dryer and the point the exhaust
connects to the dryer.
2. Set the dryer timer and temperature to air fluff
(cool down) and start the dryer.
3. Read the measurement on the manometer.
4. The system back pressure MUST NOT be
higher than 1.0 inch of water column. If the
system back pressure is less than 1.0 inch of
water column, the system is acceptable. If the
manometer reading is higher than 1.0 inch of
water column, the system is too restrictive and
the installation is unacceptable.
Although vertical orientation of the exhaust system
is acceptable, certain extenuating circumstances
could affect the performance of the dryer:
1. Only the rigid metal duct work should be used.
2. Venting vertically through a roof may expose
the exhaust system to down drafts causing an
increase in vent restriction.
3. Running the exhaust system through an
uninsulated area may cause condensation and
faster accumulation of lint.
4. Compression or crimping of the exhaust
system
will cause an increase in vent restriction.
5. The exhaust system should be inspected and
cleaned a minimum of every 18 months with
normal usage. The more the dryer is used,
the more often you should check the exhaust
system and vent hood for proper operation.
EExxhhaauusstt
DDiirreeccttiioonn
Directional exhausting can be accomplished by
installing a quick-turn 90° dryer vent elbow directly
to exhaust outlet of dryer. Dryer vent elbows are
available through your local parts distributor or
hardware store. (See Figure 2-5)
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1. Installation MUST conform to current
Manufactured Home Construction & Safety
Standard, Title 24 CFR, Part 32-80 (formerly
the Federal Standard for Mobile Home
Construction and Safety, Title 24, HUD Part
280) or Standard CAN/CSAZ240 MH.
2. Dryer MUST be exhausted outside (outdoors,
not beneath the mobile home) using metal
ducting that will not support combustion.
Metal ducting must be 4 inches (10.16 cm) in
diameter with no obstructions. Rigid metal
duct is preferred.
3. If dryer is exhausted through the floor and area
beneath the mobile home is enclosed, the
exhaust system MUST terminate outside the
enclosure with the termination securely
fastened to the mobile home structure.
4. Refer to previous sections in this guide for
other important exhaust venting system
requirements.
5. When installing a gas dryer into a mobile
home, a provision must be made for outside
make up air. This provision is to be not less
than twice the area of the dryer exhaust outlet.
6. Installer MUST anchor this (1) dryer or (2)
dryer mounted on pedestal to the floor with
approved Mobile Home Installation Kit.
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