Lochinvar 151 Sidewall direct venting, Vent/air termination sidewall, Determine location

4 Sidewall direct venting

Vent/air termination – sidewall

￿WARNING Follow instructions below when determining vent location to avoid possibility of severe

personal injury, death, or substantial property damage.

￿WARNING 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.

Installation & Operation Manual

Figure 4-1ASidewall Termination of Air and Vent

TO BOILER

INTAKE AIR

CONNECTION

FROM BOILER

VENT PIPE

CONNECTION

12"

POSSIBLE ORIENTATIONS MIN

TO

OVER-

HANG

VENT / AIR

TERMINATION

12"

MIN

￿WARNING

NOTICE

Do not connect any other appliance to the vent pipe or multiple water heaters 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.

		GRADE OR
		SNOW LINE
Table 4A Sidewall Vent Kits
Model	Kit Number	Vent Size
151 - 200	KIT30045	3 inch vent
286 - 601	KIT30046	4 inch vent

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 22 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.

￿WARNING Sidewall vent and air inlet terminations must terminate in the same pressure zone.

f.Do not terminate above any door or window. Condensate can freeze, causing ice formations.

g.Locate or guard vent to prevent condensate damage to exterior finishes.

24

701 - 801 KIT30048 6 inch vent

If using the alternate sidewall termination:

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 water heater shutdown.

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

TO BOILER

INTAKE AIRBIRD SCREEN

CONNECTION

FROM BOILER	12” MIN
VENT PIPE
	15” MAX
CONNECTION

TERMINATION

PLATE

12”

MIN

BIRD

SCREEN

GRADE OR

SNOW LINE