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UNIT SPECIFICATIONS
(See Table 1 and Figure 1)
Table 1
UNIT DIMENSIONS (INCHES)
MODEL “H” “W” “D” I/O*
PVO-300
7.50 9.25 7.00 4/4
PVO-600
8.75 9.75 8.50 4/4
*
Inlet and outlet diameter.
ELECTRICAL RATINGS
MODEL VAC Hz RPM WATT AMP TP**
PVO-300
120 60 3000 145 2.1 YES
PVO-600
120 60 3000 167 1.5 YES
**
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 different sizes consider reducers and specific size pipe when
determining equivalent length of vent pipe.
SWH-1-3 - 3 inch
SWH-1-4 - 4 inch
SWH-1-5 - 5 inch
SWH-1-6 - 6 inch
SWH-1-8 - 8 inch
CONTROL KITS
The following Control Kits can be used to common vent multiple appliances with on PVO unit:
CK-61: For operation with all 120VAC oil-fired systems. Includes draft proving switch, adjustable electronic
post purge timer, RJR isolation relay, and WMO-1 secondary safety switch.
CK-62: Same as CK-61, except has thermally activated post purge.
CK-63: For operation with all 120VAC oil-fired systems. Includes draft proving switch, adjustable electronic
post purge timer, and WMO-1 secondary safety switch.
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 fire.
2. After the heating requirement has been satisfied, the thermostat circuit will open and de-activate the burner and power
venter circuit.
3. The power venter continues to operate for a period of time after the burner has shut off to purge remaining flue gases.
Figure 2
Figure 1