Lochinvar F0600187510 - Manual (Page 10)

10
Commercial Pool Heaters
INSTALLATION
Continued
VENTING
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.
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 10 – Vent Termination from Peaked Roof - 10' or Less
From Ridge
Figure 11 – Vent Termination from Peaked Roof More Than 10'
From Ridge