Lochinvar GAS HEATER FOR COMMERICAL POOL APPLICATIONS User Manual download pdf (Page 10)

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General Information

You must supply adequate combustion and ventilation air to

this pool heater. You must provide minimum clearances for the

vent terminal from adjacent buildings, windows that open, and

building openings. Follow all requirements set forth in the

latest edition of the National Fuel Gas Code, ANSI Z223.1, in

Canada, the latest edition of CAN/CGA Standard B149

Installation Code for Gas Burning Appliances and Equipment

or applicable local building codes. Vent installations for

connection to gas vents or chimneys must be in accordance

with Part 7, “Venting of Equipment” of the above-mentioned

standards.

IMPORTANT: Examine the venting system at

least once each year. Check all joints and vent

pipe connections for tightness. Also check for

corrosion or deterioration. If you find any

problems, correct them at once.

Venting Support

Support horizontal portions of the venting system to prevent

sagging. Provide an upward slope of at least 1/4 inch per foot

(21mm/m) on all horizontal runs from the pool heater to the

vertical flue run or to the vent terminal on sidewall venting

installations.

Do not use an existing chimney as a raceway if another

appliance or fireplace is vented through the chimney. The

weight of the venting system must not rest on the pool heater.

Provide adequate support of the venting system. Follow all

local and applicable codes. Secure and seal all vent

connections. Follow the installation instructions from the vent

material manufacturer.

Vertical Vent Termination Clearances

and Location

The vent terminal should be vertical and exhaust outside the

building at least 2 feet (0.61m) above the highest point of the

roof within a 10 foot (3.05m) radius of the termination.

The vertical termination must be a minimum of 3 feet (0.91m)

above the point of exit.

A vertical termination less than 10 feet (3.05m) from a parapet

wall must be a minimum of 2 feet (0.61m) higher than the

parapet wall.

You must locate the air inlet termination elbow at least 12"

(30cm) above the roof or above normal snow levels.

Keep the vent cap clear of snow, ice, leaves, and debris to

avoid blocking the flue.

Figure 10 – Vent Termination from Peaked Roof - 10' or

Less From Ridge

IMPORTANT: Vent terminations are not shown in

Figures 10, 11, 12, and 13. Make sure all vertical

vents are installed with vent terminations

recommended by the vent manufacturer.

Figure 11 – Vent Termination from Peaked Roof More Than 10'

From Ridge

Commercial Pool Heaters

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Lochinvar GAS HEATER FOR COMMERICAL POOL APPLICATIONS User Manual Page 10

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