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CTH3-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL
58 of 71
Gas Line Check for gas leaks. See Page 37, Section 9.
Burner Observation
Window
Make sure it is clean and free of cracks or holes.
Clean and replace as required.
Blower Scroll, Wheel and
Motor
Compressed air or a vacuum cleaner may be used to clean dust and dirt.
Burner Cup and Orifice Clear of obstructions (even spider webs will cause problems).
Carefully remove any dust and debris from the burner.
Hot-Surface Igniter Replace if cracked or broken.
Heat Demand Device:
Thermostat, Zone Sensor,
External Pot or 0-10 Vdc or
4 - 20 mA wiring
There should be no exposed wire or damage to the device or wiring.
See Page 39, Section 10.
Suspension Points Make sure the heater is hanging securely.
Look for signs of wear on the chain or ceiling.
See Page 13, Figure 14.
Decorative and Protective
Grille (optional)
The grille must be securely attached.
Check that the side reflector extensions are installed correctly and secured in
place if necessary. (Decorative grille only.)
See Page 28, Section 7.5 and Page 30, Section 7.6
Make sure shield is installed correctly and secured in place if necessary.
(Decorati
ve grille only.) See Page 29, Section 7.5.2.
Lower Clearance Shield
(optional)
The lower shield must be securely attached.
Inspect shield support straps and lower clearance shield anchor points.
See Page 28, Section 7.4.
Make sure shield is installed correctly and secured in place if necessary.
See Page 28, Section 7.4.
Silicone Tubing Ensure tight, secu re fit on all pressure fittings at gas valve, pressure switch,
pressure sensor, burner partition, and blower outlet.
Gas Valve Verify silicone tubing has a tight secure fit on "vent" fitting.
Verify that plastic cap on covering pressure regulator adjustment screw is
secure and has not been tampered with.
Do not remove plastic regulator cap or attempt to adjust valve pressure
regulator.
Verify all wiring connections.
Wall Tag
If wall tag is present, make sure it is legible and accurate. Please contact
Roberts-Gordon LLC or your ROBERTS GORDON
®
independent distributor, if
you need a wall tag. See Page 4, Section 2.1.
Safety Labels Product safety signs or labels should be replaced by the product user when
they are no longer legible. Please contact Roberts-Gordon LLC or your ROB-
ERTS GORDON
®
independent distributor to obtain replacement signs or
labels. See Page 2, Figure 1 through Page 3, Figure 2.