Prepare Wall Penetrations - Lochinvar 81 - 286 Installation And Operation Manual

4
Sidewall direct venting
Figure 4-3A Clearance to Forced Air Inlets
VENT / AIR
TERMINATION
7' MIN. ABOVE ANY
PUBLIC WALKWAY
Figure 4-3B Alternate Clearance to Forced Air Inlets w/
Field Supplied Fittings
7' MIN. ABOVE ANY
PUBLIC WALKWAY

Prepare wall penetrations

1. Use the factory supplied wall plate as a template to locate
the vent and air intake holes and mounting holes.
Air pipe penetration:
a. Cut a hole for the air pipe. Size the air pipe hole as
close as desired to the air pipe outside diameter.
Vent pipe penetration:
a. Cut a hole for the vent pipe. For either combustible
or noncombustible construction, size the vent pipe
hole with at least a 1/2 inch clearance around the
vent pipe outer diameter:
• 4½ inch hole for 3 inch vent pipe
• 5½ inch hole for 4 inch vent pipe
Drill 3/16" diameter holes for inserting the plastic anchors
into the wall.
2. Install the vent and air intake piping through the wall
into the vent plate openings. Seal all gaps between the
pipes and wall. Use RTV silicone sealant to seal the air
pipe. Use the cement/primer listed in Table 3A on page
17 to seal the vent pipe.
3. Mount and secure the vent plate to the wall using
stainless steel screws. Seal around the plate to the wall
assuring no air gaps.
(continued)
4.
IF LESS
THAN 10'
5. Seal all wall cavities.
36"
MIN.
Figure 4-4A Sidewall Termination Assembly
FORCED AIR
INLET
VENT PIPING
IF LESS
THAN 10'
Prepare wall penetrations (Alternate -
Field Supplied Option)
36"
MIN.
1.
FORCED AIR
INLET
2.
BIRD
SCREEN
(TYPICAL)
3. Use a sidewall termination plate as a template for correct
4. Follow all local codes for isolation of vent pipe when
5. Seal exterior openings thoroughly with exterior caulk.
Figure 4-4B Alternate Sidewall Termination Assembly w/
Field Supplied Fittings
VENT PIPING
Installation & Operation Manual
Assemble the vent cap to the vent plate (see FIG. 4-4A).
Insert the stainless steel screws into the vent cap screw
hole openings and securely attach the vent cap to the vent
plate.
AIR PIPING
WALL PLATE
GALVANIZED
THIMBLE
Air pipe penetration:
a. Cut a hole for the air pipe. Size the air pipe hole as
close as desired to the air pipe outside diameter.
Vent pipe penetration:
a. Cut a hole for the vent pipe. For either combustible
or noncombustible construction, size the vent pipe
hole with at least a 1/2 inch clearance around the vent
pipe outer diameter:
• 4½ inch hole for 3 inch vent pipe
• 5½ inch hole for 4 inch vent pipe
b. Insert a galvanized metal thimble in the vent pipe
hole as shown in FIG. 4-4B.
location of hole centers.
passing through floors or walls.
AIR PIPING
GALVANIZED
THIMBLE
SIDEWALL
TERMINATION PLATE
VENT PLATE
VENT CAP
ELBOW
BIRD SCREEN
ELBOW
BIRD SCREEN
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