Outdoor Air Supply; Locating The Heater; Outdoor Install Clearances - Hayward H250FDN Service & Installation Manual

10

LOCATING THE HEATER:

Locate the pool/spa/hot tub heater in an area where leakage of the heat exchanger or connections will not
result in damage to the area adjacent to the heater or to the structure. When such locations cannot be avoided,
it is recommended that a suitable drain pan, with drain outlet, be installed under the heater. The pan must not
restrict airflow.
This heater must be installed at least (5) feet from the inside wall of a pool (in-ground or aboveground)/
spa/hot tub unless separated from the pool/spa/hot tub by a solid barrier.
The heater must be installed such that the location of the exhaust gas vent assembly outlet relative to
adjacent public walkways, adjacent buildings, openable windows, and building openings complies with the
National Fuel Gas Code (ANSI Z223.1/NFPA 54) and/or CAN/CGA B149 installation codes. Outdoor instal-
lation and service clearances:
The installation and service clearances for outdoor installation must be maintained as shown in Figure .
1. The heater is self-venting when installed outdoors and does not require additional vent piping.
. Do not install in a location where growing shrubs may in time obstruct a heater's combustion air
and venting areas.
. Do not install this appliance under an overhang less than () feet from the top of the appliance.
The area under the overhang must be open on () sides.
. Do not install the heater where water spray from ground sprinkler can contact the heater. The wa-
ter could splash on the controls causing electrical damage.
5. Do not install under a deck.
6. Do not install within 24" of any outdoor HVAC equipment.
7. Do not install where water may run-off a roof into the heater. A gutter may be needed to protect
the heater.
8. Any enclosure around the heater must provide a combustion air vent commencing within 1"
of the bottom of the enclosure. The vent opening shall have a minimum free area of 1 sq. in. per
,000 BTU per hour of input rating of all heaters in the enclosure. See Figure .
Figure 
Outdoor Installation Clearances
Top – " to combustible surfaces
Front – "
Right (water) side – 1"
Left side – "
Combustible floor
Back – "
USE ONLY HAYWARD GENUINE REPLACEMENT PARTS
Figure 
Air Needed in Heater Enclosures
1 Square Inch per ,000 BTUH
Input Combustion air
00,000 100 sq. in.
50,000 87.5 sq. in.
50,000 .5 sq. in
Pomona, CA Clemmons, NC Nashville, TN
Tel: 908-351-5400
Ventilation air
100 sq. in.
87.5 sq. in.
.5 sq. in.
www.haywardpool.com