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FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK
QUESTIONS AND ANSWERS cant.
Q
Is there a maximum distance that the vent cap can terminate from the exterior wall?
A. No, as long as the overall equivalent length is not exceeded. We would advise that the
exterior piping have a slight negative slope and be properly supported and insulated (The
colder the vent piping, the more condensation will be experienced).
Q
Can this unit terminate in a window well?
A.. No. Clearances to an air inlet opening must be observed
Q
What is the maximum temperature at which of the sealant will function properly?
A.
400 deg. F
Q
May I paint the vent piping?
A. Yes. Use a latex paint if it will adhere to the smooth surface. Do not use oil based paint, they
contain solvents which may attack the PVC.
Q
May I use an FPS to replace a Sidewinder?
A. Yes, but the entire FFS unit must be used. Note that the FPV/KPV units use a larger joint
penetration hole than is necessary for the FPS. Close the gap by using insulation and a
centering plate to center the vent pipe and prevent air drafts into the house.
Q
If the vent is blocked, will the blower motor continue to run?
A. Yes, but the air pressure switch will open and interrupt power to the gas solenoid valve
shutting off main burner gas flow.
Q
Will increasing the vent pipe size allow a longer equivalent feet run?
A. No, the 3 inch vent is the only sized venting approved
@1995
A.D. Smith
Water Products Co
Technical Information
Irving, Texas
100