User Guide

page 2 of 12
SYSTEM OPERATION
1. The thermostat (wall thermostat, or aquastat) calls for heat and energizes a relay which activates the
power venter. After the venter motor has come up to speed, the pressure switch closes. This completes the
circuit to the burner and allows the burner to  re.
2. For millivolt controlled water heaters, the gas pressure switch on the gas valve activates the power venter
at the same time as the burner  res.
3. After the heating requirement has been satis ed, the thermostat circuit will open and de-activate the
burner and power venter circuit.
4. The post purge timer continues to run the power venter for a period of time after the burner has shut o to
purge remaining  ue gases.
UNIT SPECIFICATIONS
Table 1
UNIT DIMENSIONS (INCHES) ELECTRICAL RATINGS
MODEL H W D I/O* VAC Hz RPM WATT AMP TP**
PVG-100 7.5 10.0 7.0
4
⁄4 115 60 3000 145 2.1 YES
PVG-300 7.5 11.5 7.0
4
⁄4 115 60 3000 145 2.1 YES
PVG-600 8.75 12.0 8.5
5
⁄5 115 60 3000 167 1.5 YES
*Inlet and outlet diameter
**Thermally protected motor
SIDEWALL VENT HOODS (Model SWH-1)
Sidewall vent hoods are available in the following sizes. The vent hood should be chosen that matches the
outlet size of the Power Venter. (See Figure 2) NOTE: When using di erent sizes, consider reducers and
speci c size pipe when determining equivalent length of vent pipe.
Figure 1
SWH-1-3 - 3"
SWH-1-4 - 4"
SWH-1-5 - 5"
SWH-1-6 - 6"
SWH-1-8 - 8"
Figure 2
P/N 46246300 Rev M 04/20