Lochinvar 51 operation manual Sidewall direct venting, Vent/air termination sidewall, Vent Size

Installation & Operation Manual

4Sidewall direct venting

Vent/air termination – sidewall

Figure 4-1APVC/CPVC Sidewall Termination of Air and

￿WARNING

￿WARNING

￿WARNING

NOTICE

Follow instructions below when determining vent location to avoid possibility of severe personal injury, death, or substantial property damage.

A gas vent extending through an exterior wall shall not terminate adjacent to a wall or below building extensions such as eaves, parapets, balconies, or decks. Failure to comply could result in severe personal injury, death, or substantial property damage.

Do not connect any other appliance to the vent pipe or multiple boilers to a common vent pipe. Failure to comply could result in severe personal injury, death, or substantial property damage.

Installation must comply with local requirements and with the National Fuel Gas Code, ANSI Z223.1 for U.S. installations or CSA B149.1 for Canadian installations.

Vent

	TO BOILER
	INTAKE AIR
	CONNECTION
	FROM BOILER
	VENT PIPE
	CONNECTION	12"
POSSIBLE ORIENTATIONS
		MIN
		TO
		OVER-
		HANG
	VENT / AIR
	TERMINATION
		12"
		MIN
		GRADE OR
		SNOW LINE
Table 4A Sidewall Vent Kit
Model	Kit Number	Vent Size
51 - 106	KIT30044	2 inch vent
151 - 211	KIT30045	3 inch vent

If using the alternate sidewall termination:

Determine location

Locate the vent/air terminations using the following guidelines:

1.The total length of piping for vent or air must not exceed the limits given in the General Venting Section on page 19 of this manual.

2.You must consider the surroundings when terminating the vent and air:

a.Position the vent termination where vapors will not damage nearby shrubs, plants or air conditioning equipment or be objectionable.

b.The flue products will form a noticeable plume as they condense in cold air. Avoid areas where the plume could obstruct window views.

c.Prevailing winds could cause freezing of condensate and water/ice buildup where flue products impinge on building surfaces or plants.

d.Avoid possibility of accidental contact of flue products with people or pets.

e.Do not locate the terminations where wind eddies could affect performance or cause recirculation, such as inside building corners, near adjacent buildings or surfaces, window wells, stairwells, alcoves, courtyards, or other recessed areas.

3.The air piping must terminate in a down-turned elbow as shown in FIG. 4-1B. This arrangement avoids recirculation of flue products into the combustion air stream.

4.The vent piping must terminate in an elbow pointed outward or away from the air inlet, as shown in FIG. 4-1B.

￿WARNING Do not exceed the maximum lengths of the outside vent piping shown in FIG. 4-1B.

Excessive length exposed to the outside could cause freezing of condensate in the vent pipe, resulting in potential boiler shutdown.

Figure 4-1BAlternate PVC/CPVC Sidewall Termination of Air and Vent w/Field Supplied Fittings

TO BOILER

INTAKE AIR BIRD SCREEN

CONNECTION

FROM BOILER	12” MIN
VENT PIPE
	15” MAX
CONNECTION

TERMINATION

PLATE

12”

MIN BIRD SCREEN

GRADE OR

SNOW LINE

21