Manual

Page 3
POWER VENTER SIZING
In order to choose the correct size power venter for a particular installation, the total input firing rate and total equivalent
length of vent pipe to be used must be known. Refer to Table 2 to determine the maximum allowable equivalent feet of
pipe for each model used with the pipe diameters shown. When venting multiple appliances, add the input of each
appliance to determine the total input. Always choose a power venter that is capable of handling more than the system
requires. The choke plate can be adjusted to compensate for the difference.
Table 2
MAXIMUM EQUIVALENT HORIZONTAL PIPE LENGTH (FEET)
BTU/HR INPUT
VENTER MODEL NO. AND VENT PIPE DIAMETER
PVG-100 PVG-300 PVG-600
3” 4” 4” 5” 6” 5” 6“ 8”
25,000
270 455 --- --- --- --- --- ---
55,000
100 169 --- --- --- --- --- ---
70,000
--- 144 --- --- --- --- --- ---
100,000
--- 100 305 --- --- --- --- ---
145,000
--- --- 145 247 334 413 --- ---
220,000
--- --- 64 100 147 181 --- ---
310,000
--- --- --- 54 74 91 146 216
400,000
--- --- --- --- --- 54 87 134
520,000
--- --- --- --- --- --- 52 86
610,000
--- --- --- --- --- --- --- 66