Lochinvar WH 55-399 Vent, Centerline Width, Prepare wall penetrations, Sidewall direct venting

4 Sidewall direct venting

Figure 4-3BAlternate Clearance to Forced Air Inlets w/ Field Supplied Fittings

IF LESS

THAN 10’

Installation & Operation Manual

Figure 4-4APVC/CPVC Sidewall Termination Assembly

7’ MIN. ABOVE ANY PUBLIC WALKWAY

36”

MIN.

FORCED AIR

INLET

BIRD

SCREEN

(TYPICAL)

AIR PIPING

VENT PIPING

WALL PLATE

GALVANIZED

THIMBLE

VENT AIR

CENTERLINE WIDTH

VENT PLATE

VENT CAP

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:

Table 4B Sidewall Vent Centerline Dimensions

Model	Air	Vent	Centerline Width
151 - 200	3"	3"	5 5/8"
286	4"	4"	5 5/8"

Figure 4-4BPolypropylene Sidewall Termination Assembly

• 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.	For Polypropylene Only: Install the vent and air intake
	sidewall adapters from Table 3F on page 20 into the vent
	plate. Slide the sidewall retaining bracket down the
	sidewall adapters flush to the vent plate (FIG. 4-4B).
3.	For PVC/CPVC Only: Install the vent and air intake
	piping through the wall into the vent plate openings.
	Use RTV silicone sealant to seal the air pipe. Use the
	cement/primer listed in Table 3D on page 19 to seal the
	vent pipe.
4.	Mount and secure the vent plate to the wall, using stainless
	steel screws.

SIDEWALL ADAPTER (AIR)

SIDEWALL ADAPTER (VENT)

WALL

PLATE

SIDEWALL

RETAINING

PLATE

VENT

PLATE

VENT

CAP

5.	Seal all gaps between the pipes and wall. Seal around the
	plate to the wall assuring no air gaps.
6.	Assemble the vent cap to the vent plate (see FIG.'s 4-4A
	and 4-4B). Insert the stainless steel screws into the vent
	cap screw hole openings and securely attach the vent cap
	to the vent plate.
7.	Seal all wall cavities.
8.	PVC/CPVC terminations are designed to accommodate
	any wall thickness of standard constructions per the
	directions found in this manual.
9.	Stainless steel terminations are designed to penetrate
	walls with a thickness up to 9.25 inches of standard
	construction.

GALVANIZED	IMG00085
THIMBLE

24