Lochinvar GAS HEATER FOR COMMERICAL POOL APPLICATIONS - Manual (Page 20)

IIN NS ST TA AL LL LA AT TIIO ON N Continued
Input Kit* Max. Vent Vent Max. Vent
Btu/hr (w/Power Length Termination Only Length
Fan Assy.) (500,000 - 750,000 Btu/hr)
500,000 SVK3006 100 ft. SVK3043 50 ft.
650,000 SVK3008 100 ft. SVK3044 50 ft.
750,000 SVK3008 100 ft. SVK3044 50 ft.
990,000 SVK3053 100 ft. N/A N/A
1,260,000 SVK3054 100 ft. N/A N/A
1,440,000 SVK3054 100 ft. N/A N/A
1,800,000 SVK3055 100 ft N/A N/A
2,070,000 SVK3055 100 ft. N/A N/A
*These kits include a sidewall venter assembly, vent termination, and barometric damper.
4. Horizontal DirectAire™ Venting
IMPORTANT: Before installing a venting system,
follow all venting clearances and requirements
found in the Venting, General Information
section, page 10.
The Horizontal DirectAire™ vent system is the same as the
Sidewall Venting system, except it pulls combustion air from the
outdoors through a sidewall air inlet. Follow all requirements in
Sidewall Venting, page 17.
The Horizontal DirectAire™ vent system requires you to
install two vent pipes directly to the pool heater; one pipe for
flue products and one for combustion air. Install both vent
pipes horizontally with a sidewall termination point. For this
venting option, you must purchase the DV box accessory from
the pool heater manufacturer. The DV box attaches to the air
inlet of the pool heater. The pipe for combustion air attaches to
the DV box.
Make vent connection directly to the top of the pool heater. No
additional draft diverter or barometric damper is required on
single unit installations with a dedicated stack and a negative
draft maintained between 0.04 to 0.08 inches w.c.
The Horizontal DirectAire™ combustion air supply system
has specific vent material and installation requirements. The
air inlet pipe connects directly to the pool heater to supply
combustion air. The combustion air inlet pipe is a dedicated
system with one air inlet pipe per pool heater. You must
connect the air inlet pipe to a combustion air inlet cap as
specified in this section.
Figure 23 – Horizontal DirectAire Installation (Illustration
with Sidewall Venter and Sidewall Combustion Air)
Combustion air supplied from outdoors must be free of
contaminants (see Combustion and Ventilation Air, page 7).
Vent Kits
You must order the Horizontal DirectAire™ Vent Kit for
sidewall installation. See TABLE–F for kit numbers. Each kit
includes a sidewall powered vent cap, proving switch,
controls, combustion air inlet cap to supply air to a single pool
heater, the transition adapter to attach the field supplied single
wall air inlet pipe to the pool heater and installation
instructions. Purchase flue pipe and air inlet pipe locally.
The sidewall air inlet cap supplied in the Horizontal
DirectAire™ Vent Kit is used to supply combustion air to a
single pool heater. Combustion air supply pipes from multiple
pool heaters can not be combined into a single air inlet pipe
and inlet point.
ƽ
WARNING: Only use the sidewall air inlet cap
recommended by the appliance manufacturer.
Using another sidewall air inlet cap may result in
operational problems and the spillage of flue
products. Spillage of flue products can cause
personal injury or death due to carbon monoxide
poisoning.
Venting of Flue Products
Termination point for the flue products must follow the
clearance requirements in Sidewall Vent Termination
Clearances and Location page 11.
Commercial Pool Heaters
20
TABLE-E
Sidewall Vent Kits