Raypak Xfiire 1000B, Installation And Operation Manual

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11
NOTE: Vent termination must not terminate under less
than 3 ft below eaves, soffits.
Combustion and Ventilation Air
NOTE: Use of this heater in construction areas where
fine particulate matter, such as concrete or dry-wall dust,
is present may result in damage to the heater that is not
covered by the warranty. If operated in a construction
environment, a clean source of combustion air must be
provided directly to the heater.
Inside Air Contamination
All heaters experience some condensation during start-
up. The condensate from flue gas is acidic. Combustion
air can be contaminated by certain vapors in the air which
raise the acidity of the condensate. Higher acidity levels
attack many materials including stainless steel, which is
commonly used in high efficiency systems. The heater
can be supplied with corrosion-resistant, non-metallic
intake air vent material. You may, however, choose to use
outside combustion air for one or more of these reasons:
1. Installation is in an area containing contaminants
listed below which will induce acidic condensation.
2. You want to reduce infiltration into your building
through openings around windows and doors.
3. You are using AL29-4C stainless steel, PVC,
CPVC or Polypropylene vent pipe, which is more
corrosion-resistant than standard metallic vent pipe.
In extremely contaminated areas, this may also
experience deterioration.
Products causing contaminated combustion air:
• spray cans containing chloro/fluorocarbons
• permanent wave solutions
• chlorinated waxes/cleaners
• chlorine-based swimming pool chemicals
• calcium chloride used for thawing
• sodium chloride used for water softening
• refrigerant leaks
• paint or varnish removers
• hydrochloric acid/muriatic acid
• cements and glues
• antistatic fabric softeners used in clothes dryers
• chloride-type bleaches, detergents, and cleaning
solvents found in household laundry rooms
• adhesives used to fasten building products
• similar products
Areas where contaminated combustion air commonly
exists:
• dry cleaning/laundry areas
Outdoor Installation
A A CAUTION: DO NOT install XFiire heaters outdoors in
freezing climates.
NOTE: Housekeeping pad of adequate height required
for outdoor units to protect heater from standing water.
These units may be installed outdoors when provided with
the factory-supplied and required outdoor trim.
Heaters must not be installed under an overhang unless
clearances are in accordance with local installation codes
and the requirements of the gas supplier.
Three sides must be open in the area under the overhang.
Roof water drainage must be diverted away from heaters
installed under overhangs.
Combustion air is drawn through the louvers in the jacket.
DO NOT remove the cap as shipped from the factory.
COMBUSTION AIR INLET
DO NOT REMOVE COVER
(TRUE SEAL OPTION)
F10610
Figure 11. Outdoor Combustion Air
A A CAUTION: Do not install where the condensate can
freeze. Take appropriate measures.
Heater Side
Minimum
Clearances from
Combustible
Surfaces
in. (mm)
Minimum Service
Clearance
in. (mm)
Rear
24 (610) 24 (610)
Front
Open 30 (762)
Left Side
0 0
Right Side
0 0
Top 0 0
Vent
Termination
Open Open
Table I. Clearances – Outdoor Installations