CFM Corporation PVS-1 - Manual (Page 6)

6
Majestic
®
Fireplaces Power Venting System
51810
FP1421
Min. vertical rise
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18” (457mm)
Minimum
FP1421
Fig. 5 An 18” (457mm) minimum vertical rise is necessary
before a 90° elbow.
FP1422
pipe transitions
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Negative Pressure
Power Venter
Positive Pressure
All seams on the
positive side of
power venter to
be sealed with
high temperature
silicone sealant.
FP1422
Fig. 7 Vent pipe connections and all joints on the outlet side
of the power venter must be sealed with high temperature
sealant.
FP1423
pipe transitions
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Incorrect Correct
FP1423
Fig. 6 Vent pipe transitions should be gradually tapered.
Installation
1. Cut 6¹⁄₄” (159mm) diameter hole through outside wall
- see General Code Requirements for proper loca-
tion.
2. Install vent terminal. Fasten from outside with four
(4) screws and caulk around flange edge.
3. Locate fireplace and fasten to floor as shown in fire-
place manual.
FP1425
horizontal mounting
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FP1424
vertical mounting
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Ceiling
6” (152 mm)
Bracket
1” (25 mm)
Bracket
Vibration
Isolation
Mounts
Fan
Power Venter
Discharge
Power Venter
Bracket
Discharge
Fan
Power Venter Bracket
Wall or
Wall
Studs
Horizontal Mounting
Vertical Mounting
FP1425
Fig. 8 Power venter mounting options.
FP1424
4. Install optional sound reducer (Model SR5 or SR4)
onto fireplace. See Installation Instructions pack-
aged with sound reducer.
5. Mount Power Venter
NOTE: It is best to locate the fan near the vent
terminal. However, if such a location is not suitable,
the fan can be installed anywhere within the vent
system.
a. Remove vibration isolation mount and retain
the nut from the parts bag and install. Install on
Power Venter as shown in diagram. Next install
flexible duct piece and outlet collar using four (4)
screws to fasten.
b. To prevent vibration, securely support Power
Venter from ceiling or joist with Power Venter
bracket. (Fig. 8)
c. By using 1” (25 mm) bracket, clearance to fan is
maintained at 1” (25 mm). The addition of the 6”
(152 mm) bracket, maintains a 6” (152 mm) clear-
ance to combustibles.