Bryant 342 User Manual

Maintain a 10-foot clearance from the bottom of the heater to aircraft wings or fuselage.

Maintain an 8-foot clearance from the floor in other hangar areas, offices, and shops.

Locate heater to prevent damage from aircraft/objects and ensure service accessibility.

Maintain a 6-inch clearance from combustible material at the top and sides.

Ensure 18-inch service clearance at the rear and 12 inches at the bottom.

Direct heated airstream toward the area with the greatest heat loss.

Arrange heaters for continuous circular airflow in multiple installations.

Avoid locating in areas with limited combustion air.

Provide sufficient makeup air if units are in spaces with exhaust fans.

Use 1/2-inch pipe tappings for suspension with pipe unions.

Do not lift by motor mount; use a rope sling when possible.

Make electrical connections per NEC and local codes; ensure proper grounding.

Use proper wire size, manage voltage drop, and treat aluminum for oxidation.

Connect to 115/60/1 power; set thermostat heat anticipator to 0.8 amps.

Remove burner hold-down bracket and follow lighting instructions.

Adjust pilot flame for proper impingement or surrounding of the thermocouple.

Check and verify that the unit's gas input matches the rating plate.

Test thermostat cycles, pilot operation, and temperature limit control.

Inspect and clean pilot orifice; unscrew and clean main burner orifices.

Procedure for removing main burners by disengaging the orifice spud.

Scrub heat exchanger tubes with a stiff brush to remove scale and soot.

Oil fan motors yearly with SAE No. 20 nondetergent oil or equivalent.

Wiring diagrams for unit heaters with 733 pilot and 732 pilot installed.

Wiring diagrams for unit heaters with 733 pilot and 732 pilot installed.

Wiring diagrams for unit heaters with 733 pilot and 732 pilot installed.

Wiring diagrams for unit heaters with 733 pilot and 732 pilot installed.

Instructions for connecting thermostat field wiring and subbase.