Carbon Monoxide Test; Heater Ignition System; Coil - Aerotech BT 400-46 Installation And Operation Maintenance

Section 5
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5.38 Heat Exchanger Reassemble
5.39 To assemble the heat exchanger, reverse the disassemble procedures.
5.40

Carbon Monoxide Test

5.41 To check the heaters' ventilating air stream for carbon monoxide contamination, proceed as follows:
On units that are used on a seasonal basis, this test shall be performed prior to the unit
being put into service. A second test will be required if the heating season is longer than
six month. Additional tests shall be performed any time contamination is suspected or
if maintenance has been performed on exhaust system.
(a) Attach one twelve inch duct to heater. Attach a duct adapter to the twelve inch duct and attach
three six inch duct to adapter, see figure 4-7. Ensure there is no kinks in ducts.
(b) Start heater using proper start procedures (paragraph 4.29). Rotate temperature selector valve
to obtain a discharge temperature of 250°F.
(c) Using a carbon monoxide tester, measure the carbon monoxide level at one of the six inch
ducts. The carbon monoxide level will not exceed 35 PPM.
5.42

Heater Ignition System

5.43 Components of the ignition system are the coil, ignition cable and the igniter plug.
5.44

Coil

5.45 The coil is mounted on a bracket installed opposite the fuel pump.
5.46 Ignition cable and igniter plug
5.47 Ignition cable and plug removal
5.48 To remove ignition cable and igniter plug, proceed as follows:
(a) Remove fan mounting ring by following the procedures listed in Par. 5.31.
(b) Disconnect the ignition cable from igniter plug and coil.
(c) Remove grommet from casing and remove ignition cable.
(d) Remove igniter plug from combustion plate.
(e) Disengage clamp from notches in combustion chamber and remove combustion plate (see
figure 5-3).
(f) Clean igniter plug and ignition cable and inspect for cracks, burning, pitting or other damage.
Replace as necessary.
AEROTECH HERMAN NELSON INTERNATIONAL INC.
100 Eagle Drive, Winnipeg, Manitoba Canada R2R 1V5
Phone: 204-633-1999 (24 Hours) Fax: 204-694-1612 Email:
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