Rheem 801C Series, Installation Instructions Manual

22

COMBUSTION AND VENTILATION AIR (cont .)

POWER VENT SYSTEMS

When vertical venting is not possible, the only acceptable 

method for horizontal venting is with the use of Tjernlund model 

GPAK-1TR or Field Controls models SWG-4R power venter . 

Type B vent pipe and fittings must be used . Common venting is 

not permitted
All application and installation instructions supplied with 

the power venter must be followed .
Please address all questions regarding power venter installa-

tion, agency listings and furnace model compatibility to:
   Tjernlund Products, Inc .

      (800) 255-4208 or (612) 426-2993
   Field Controls L .L .C .

      (800) 742-8368 or (919) 522-0214

EXISTING VENT SYSTEMS

IMPORTANT RETROFIT

VENTING INSTRUCTIONS

If this furnace is a replacement installation, ALWAYS INSPECT 

the existing vent system to be sure there are no obstructions, 

blockages, or signs of corrosion .
When the existing furnace is removed from a venting system 

serving other appliances, the venting is likely to be too large to 

properly vent the remaining attached appliances .
The following steps shall be followed with each appliance that 

remains connected to the common venting system, while the 

other appliances that remain connected to the common venting 

systems are not in operation .
NOTE: When the vent table permits more than one diame-

ter of pipe for a connector or vent, the smallest permitted 

diameter must be used .1 . Seal any unused openings in the 

common venting system .
NOTE: Ensure existing venting system complies with latest 

addition of National Fuel Gas Code ANSI Z223 .1 and all local 

codes/regulations .

1 . Visually inspect the venting system for proper size and hori-

zontal pitch and determine that there is no blockage, restric-

tion, leakage, corrosion or other deficiencies which could 

cause an unsafe condition .

2 . Insofar as is practical, close all building doors, windows and 

all doors between the space where the appliances remaining 

connected to the common venting system are located . Turn 

on clothes dryers and any appliance not connected to the 

common venting system . Turn on any exhaust fans, such as 

range hoods and bathroom exhausts, so they will operate 

at maximum speed . Do not operate a summer exhaust fan . 

Close fireplace dampers .

3 . Follow the lighting instructions . Place the appliance being 

inspected into operation . Adjust the thermostat so the appli-

ance will operate continuously .

4 . Test for spillage at the draft hood relief opening after 5 min-

utes of main burner operation . Use the flame of a match or 

candle, or smoke from a cigarette, cigar, or pipe .

5 . After it has been determined that each appliance that remains 

connected to the common venting system properly vents 

(when tested as outlined above) return doors, windows, 

exhaust fans, fireplace dampers and any other gas-burning 

appliance to their previous conditions of use .

6 . If improper venting is observed during any of the above tests, 

the common venting system must be resized . Refer to Na-

tional Fuel Gas Code, ANSI Z223 .1 .

Combustion Air