Thermo Pride CMA3-50D36N Installation And Service Manual page 9

: Copper and brass tubing and fittings (except tin lined) shall not be
used if the gas contains more than a trace (0.3 grains per 100 cubic ft.) of
hydrogen sulfide gas. Check with your gas supplier.
: TURN OFF THE ELECTRICAL POWER to the furnace before attempting
to change blower speed wiring.
: Turn off power to furnace before it is placed into service. The gas
piping system must have been leak tested by a qualified heating contractor in
accordance with State, Local and National Codes including the National Fuel Gas
Code NFPA 54/ANSI-Z233.1 (Latest Edition).
: It may be necessary to purge the air out of the gas line for initial start-
up of the furnace after installation. This should be done by a qualified heating
contractor. If excessive gas escapes when purging the gas supply at the union,
allow the area to ventilate for at least 15 minutes before attempting to start the
furnace. LP gas is especially dangerous because the specific gravity of LP gas
allows it to accumulate at floor level at a dangerous concentration.
: Heat exchanger oil will burn off on initial firing creating an unpleasant
odor. To prevent this odor from occurring more than once, it is suggested that:
1. A window(s) be opened.
2. The thermostat set at highest setting.
3. The furnace remain running at conditions 1&2 above for 15 minutes or until
odor has dissipated.
The CMA/CMC furnace models are of direct vent design and do not
:
require an air shutter adjustment (air shutters are not used) for proper flame
characteristics. Burner box access cover must always be secured with all screws
in place and tightened before operating furnace.
: Personal injury or property damage could result from repair or service
of this furnace by anyone other than a qualified heating contractor.
Label wires prior to disconnection when servicing controls. Wiring
:
errors can cause improper and dangerous operation.
The inducer motor mounting plate gasket and the collector box gasket
:
must be replaced if they show any sign of having been damaged.
: Power must be disconnected before servicing.
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