Trane Gas Unit Heaters Installation Manual download pdf (Page 32)

32 GKND-SVX01B-EN

Maintenance

Periodic Service

All Maintenance/Service information should be recorded

accordingly on the inspection sheet provided in this

manual (see “Gas Equipment Start-Up,” p. 31).

Note: The heater and vent system should be checked

once a year by a qualified technician.

Important: Gas tightness of the safety shut-off valves

must be checked on at least an annual basis.

To check gas tightness of the safety shut-off valves, turn off

the manual valve upstream of the appliance combination

control. Remove the 1/8-inch pipe plug on the inlet side of

the combination control and connect a manometer to that

tapping. Turn the manual valve on to apply pressure to the

combination control. Note the pressure reading on the

manometer, then turn the valve off. A loss of pressure

indicates a leak. If a leak is detected, use a soap solution to

check all threaded connections. If no leak is found,

combination control is faulty and must be replaced before

putting appliance back in service.

Should maintenance be required, perform the following

inspection and service routine:

1. Inspect the area near the unit to be sure that there is no

combustible material located within the minimum

clearance requirements listed in this manual.

2. Turn off the manual gas valve and electrical power to

the gas unit heater.

3. To clean or replace the main burners, remove the

ttom panel and compress the spring by moving the

burner toward the manifold. Slide the opposite end of

the burner downward from the locating slot while

retaining spring is still compressed. Pull the burners

away from the heat.

4. With the burners removed, wi

re brush the inside

surfaces of the heat exchanger.

5. Remove any dirt, dust, or other foreign matter from the

urners using a wire brush and/or compressed air.

Ensure that all parts are unobstructed. Inspect and

clean pilot burner if necessary.

6. Reassemble the gas unit heater

by replacing all parts in

reverse order.

7. Complete the appropriate unit start-up procedure as

ven in “Operation,” p. 27 (see unit lighting instruction

plate and the unit nameplate).

8. Check the burner adjustment (see “Primary Air Shutter

Adjustment,” p. 29).

9. Check all gas control valves and pipe connections for

leak

10. Check the operation of the automatic gas valve by

lowering

the setting of the thermostat, stopping the

operation of the gas unit heater. The gas valve should

close tightly, completely extinguishing the flame on

the main burners.

11. Inspect and service the motor/fan assemblies. T

maintain efficient air flow, inspect and clean the fan

blades and guard to prevent buildup of foreign matter.

WARNING

Hazardous Service Procedures!

The maintenance and troubleshooting procedures

recommended in this section of the manual could

result in exposure to electrical, mechanical or other

potential safety hazards. Always refer to the safety

warnings provided throughout this manual concerning

these procedures. When possible, disconnect all

electrical power including remote disconnect and

discharge all energy storing devices such as capacitors

before servicing. Follow proper lockout/tagout

procedures to ensure the power can not be

inadvertently energized. When necessary to work with

live electrical components, have a qualified licensed

electrician or other individual who has been trained in

handling live electrical components perform these

tasks. Failure to follow all of the recommended safety

warnings provided, could result in death or serious

injury.

WARNING

Hazardous Voltage and Gas!

Turn off the gas supply and disconnect all electric

power, including remote disconnects before servicing

unit. Follow proper lockout/tagout procedures to

ensure the power can not be inadvertently energized

and the gas can not be inadvertently turned on. Failure

to turn off gas or disconnect power before servicing

could result in death or serious injury.

WARNING

Hazard of Explosion!

Never use an open flame to detect gas leaks. Explosive

conditions may occur. Use a leak test solution or other

approved methods for leak testing. Failure to follow

recommended safe leak test procedures could result in

death or serious injury or equipment or property-only-

damage.

WARNING

Combustible Materials!

Maintain proper clearance between the unit heat

exchanger, vent surfaces and combustible materials.

Refer to unit nameplate and installation instructions for

proper clearances. Improper clearances could result in a

fire hazard. Failure to maintain proper clearances could

result in death or serious injury or property damage.

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Trane Gas Unit Heaters Installation Manual Page 32

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