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UHA L
OW
 P
ROFILE
 U
NIT
 H
EATER
 I
NSTALLATION
 O
PERATION
 
AND
 S
ERVICE
 M
ANUAL
36 
12.7 Venting and Air Intake Pipe
Inspect all venting and air intake pipe. Ensure that 
all seams are sealed and suspension points secure. 
Repair suspension points if any part of the venting 
or combustion air pipe is sagging. Check to make 
sure any insulation is not missing or in poor 
condition. Replace as required. Check all venting 
and air intake components to ensure they are in 
good condition, gas tight and corrosion-free.
12.8 Maintenance Checklist
Installation Code and Annual Inspections: All 
installations and service of ROBERTS GORDON
®
 
equipment must be performed by a contractor 
qualified in the installation and service equipment 
sold and supplied by Roberts-Gordon and conform 
to all requirements set forth in the ROBERTS 
GORDON
®
 manuals and all applicable 
governmental authorities pertaining to the 
installation, service and operation of the equipment.
To help facilitate optimum performance and safety, 
Roberts-Gordon recommends that a qualified 
contractor annually inspect your ROBERTS 
GORDON
®
 equipment and perform service where 
necessary, using only replacement parts sold and 
supplied by Roberts-Gordon.
WARNING
Explosion Hazard
Installation, service and annual inspection 
must be done by a contractor qualified in 
the installation and service of gas-fired 
heating equipment or your gas supplier.
Turn off gas and electrical supplies before 
performing service or maintenance.
Failure to follow these instructions can 
result in death, injury or property damage.
The Vicinity of the Heater
Do not store or use flammable objects, liquids or vapors near the heater. 
Immediately remove these items if they are present.
 
Vehicles and Other 
Objects
Maintain the clearances to combustibles.
Do not hang anything from, or place anything on, the heater.
Make sure nothing is lodged in between the heat exchanger or in the louvers.
Immediately remove objects in violation of the clearances to combustibles.
 
Vent Pipe/Terminals
Venting must be intact. Using a flashlight, look for obstructions, cracks on the 
pipe, gaps in the sealed areas or corrosion.
The area must be free of dirt and dust.
Remove any carbon deposits or scale using a wire brush.
If the vent terminal has a screen built in, remove any dirt, dust or deposits 
from the screen.