Overview of Primary Product

page 8
AIR FLOW ADJUSTMENTS
In order to obtain proper system draft, the power venter has an airflow adjustment damper
built in. When used in a system with a barometric draft control, this damper should be used
to make coarse draft adjustments while the barometric should be used for finer adjustments.
Loosen the locking screw on the air flow adjustment damper on the outer pipe of the
power venter. (See Figure 8) Adjust the damper to the full open position. Follow appliance
manufacturer's procedures for starting the heating appliance. Then adjust the thermostat
to call for "Heat". After the system has operated for several minutes to stabilize flue gas
temperatures, check for negative draft or up-draft at the heating appliance outlet or air flow
into the draft hood. Use a draft gauge, velocity meter or match test procedure. Adjust the
adjustment damper closed to obtain the minimum air flow required to maintain draft. Then
increase air flow slightly (10% over minimum air flow rate) to ensure proper venting. For oil-
fired or gas-fired power burners, adjust draft to proper over-fired draft.
Figure 13
Figure 12
Figure 11
CLASS B AND CLASS L DOUBLE WALL VENT PIPE INSTALLATION
(Follow vent pipe manufacturer’s listed or recommended clearances from combustible material.)
Using a hand crimper or a like device, crimp the inner pipe of the CV power venter approximately 1” long. 1.
(See Figure 7)
Attach the vent pipe over the crimped end of the CV power venter inner pipe.2.
Secure the vent pipe to the CV power venter inner pipe with at least three (3) #8 sheet metal screws 3.
Pre-drilling the holes through both pipes will allow easier fastening.
WIRING
NOTE: Refer to appropriate control kit for proper installation instructions.
Wire the power venter motor and controls in accordance with the National Electric Code and applicable local
codes. UNIT MUST BE GROUNDED. Check ground circuit to make certain that the unit has been properly grounded.
The wiring should be protected by an over-current circuit device rated at 15 amperes. CAUTION MUST be taken
to ensure that the wiring does not come in contact with any heat source. All line voltage and safety control circuits
between the power venter and the appliance MUST be wired in accordance with the National Electrical Code for
Class 1 wiring or equivalent.
MODEL HOLE DIMENSIONS
CV-4 Min. 7-
1
⁄8" Square
CV-5 Min. 8-
1
⁄8" Square
Figure 10
Table 5