Commercial Pool Heaters
INSTALLATION Continued
Masonry Chimney Installations
A masonry chimney must be properly sized for the installation of a high efficiency
Inspection of a Masonry Chimney
A masonry chimney must be carefully inspected to determine its suitability for the venting of flue products. A
Vertical Vent Termination Clearances and Location Follow all vertical venting termination information for clearances and location under Vertical Vent Termination Clearances and Location, page 10.
You can terminate the combustion air pipe either horizontally with a sidewall air inlet or vertically with a rooftop air inlet. The installed length of air inlet pipe from the pool heater to the outside air inlet cap must not exceed 50 equivalent feet (15.2m).
Figure 18 – Vertical DirectAire Installation with Sidewall Combustion Air Inlet
2. Vertical DirectAire™ Venting
IMPORTANT: Before installing a venting system, follow all venting clearances and requirements found in the Venting, General Information section, page 10.
Figure 19 – Air Inlet Cap for Sidewall Termination
The Vertical DirectAire™ vent system is the same as the Conventional Negative Draft vent system, except it pulls combustion air from the outdoors through a sidewall or vertical air inlet. Follow all requirements in Conventional Negative Draft Venting, page 14.
The Vertical DirectAire™ vent system requires you to install two vent pipes directly to the pool heater; one vertical pipe with a rooftop termination for the flue products and one pipe for combustion air. For this venting option, you must purchase the DV box adapter. The DV box attaches to the air inlet of the pool heater. The pipe for combustion air attaches to the DV box.
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