Proper operation of the water heater requires air for combustion and ventilation. Provisions for
combustion and ventilation air must comply with referenced codes and standards.
Combustion and Ventilation Air
(Indoor Water Heater Only)
NOTICE: If the water heater is installed in
an unconfined space within a building of
conventional frame, masonry or metal
construction, infiltration air is normally
adequate for proper combustion and
ventilation. If the water heater is installed in
a confined space, provisions for combustion
and ventilation air must be made.
A confined space is one having a volume
of less than 50 cubic feet (1.4 m
3
) per
1000 Btuh (0.3 kw) of the aggregate input
of all appliances within that space.
The air must be supplied through two
permanent openings of equal area. One
is to be located within 12” (30 cm) above
the floor and the other is to be located
within 12” (30 cm) below the ceiling.
The minimum net free area of each opening
must not be less than one square inch (6.5
cm
2
) per 1000 Btuh (0.3 kw) of the total
input rating of all the appliances in the
enclosure (but not less than 100 square
inches [650 cm
2
]) if each opening
communicates with other unconfined areas
inside the building. The above
requirements shall be used unless:
national, provincial, or local codes govern
the requirement for these air openings.
Buildings of unusually tight construction
shall have the combustion and ventilation
air supplied from outdoors, or a freely
ventilated attic or crawl space.
If air is supplied from outdoors, directly or
through vertical ducts, there must be two
openings located as specified above and
each must have a minimum net free area
of not less than one square inch
(6.5 cm
2
) per 4000 Btuh (1.2 kw)of the
total input rating of all the appliances in
the enclosure.
If horizontal ducts are used to
communicate with the outdoors, each
opening must have a minimum net free
area of not less than one square inch
(6.5 cm
2
) per 2000 Btuh (0.6 kw) of the
total input rating of all the appliances in
the enclosure. If ducts are used, the
minimum dimensions of rectangular air
ducts shall not be less than 3” (7.6 cm).
NOTICE: If the duct openings which supply
combustion and ventilation air are to be
covered with a protective screen or grill, the
net free area (openings in the material) of
the covering material must be used in
determining the size of the openings.
Protective screening for the openings MUST
NOT be smaller than 1/4” (0.64 cm) mesh to
prevent clogging by lint or other debris.
Additional installation information for The
Commonwealth of Massachusetts is located
on page 36.
Corrosive Atmospheres
The air in beauty shops, dry cleaning
establishments, photo processing labs,
and storage areas for liquid and powdered
bleaches or swimming pool chemicals
often contains such halogenated
hydrocarbons.
An air supply containing halogenated
hydrocarbons may be safe to breathe,
but when it passes through a gas flame,
corrosive elements are released that
will shorten the life of any gas burning
appliance.
Propellants from common spray cans
or gas leaks from A/C and refrigeration
equipment are highly corrosive after
passing through a flame.
The water heater warranty is voided when
failure of the heater is due to operation in
a corrosive atmosphere.
NOTICE: The water heater
should not be installed near
an air supply containing
halogenated hydrocarbons.
DANGER: OUTDOOR
water heaters must not
be installed indoors or
in a confined space.
Install outdoor water
heaters outdoors only.
9
Inspect Shipment
Inspect the water heater for possible damage. Check the markings on the rating plate of
the water heater to be certain the type of gas supplied corresponds to the water heater
requirements. Verify all included parts are present (see below).
Air openings
minimum
200 sq. in.
(1290 cm
2
).
Min. 3”
(7.6 cm)
Manual Appliance
Gas Shut-off Valve
Wood Screw x 5pcs.
Washer x 4 pcs.
Use & Care Manual
T ankless Unit
FOR YOUR SAFETY!
—
Do not stor e or use gasoline or other
flammable vapors or liquids or other
combustible materials in the vicinity of this or
any other appliance. To do so may r esult in an
explosion or fir e.
—
WHA T T
O DO IF YOU SMELL GAS
l
Do not try to light any appliance.
l
Do not touch any electrical switch; do not
use any phone in your building.
l
Immediately call your gas supplier fr om a
neighbor ’s phone. Follow the gas
supplier ’s instructions.
l
If you cannot r each your gas supplier , call
the fir e department.
l
Do not r eturn to your home until authorized
by the gas supplier or fir e department.
—
Impr oper installation, adjustment,
alteration, service or maintenance can cause
pr operty damage, personal injury , or death .
Refer to this manual. Installation and servic e
must be performed by a qualified installer ,
service agency or the gas supplier .
!
W ARNING: If the information in these instructions is not followed exactly ,
a fir e or explosion may r esult causing pr operty damage, personal injury o r death.
!
The purpose of this manual is twofold: one, to pr ovide the installer with
the basic dir ections and re commendations for the pr oper installation and
adjustment of the water heater; and two, to the owner–operator , to
explain the featur es, operation, safety pr ecautions, maintenance and
tr oubleshooting of the water heater . This manual also includes a parts
list.
It is imperative that all persons who ar e expected to install, operate or
adjust this water heater r ead the instructions car efully so they may
understand how to perform these operations. If you don’t understand
these instructions or any terms within it, seek pr ofessional advice.
Any questions r egarding the operation, maintenance, service or
warranty of this water heater should be dir ected to the selle r f
ro m whom
it was pur chased. If additional information is re quir ed, r
efer to the
section on How to Obtain Service Assistance.
Do not destr oy this manual. Please r ead c ar efully and keep in a safe
place for futur e r efer ence.
Recognize this symbol as an indication of Important Safety
Information!
C alifornia P r oposition 65 W arning: This pr
oduct contains
chemicals known to the S tate of California to cause cancer , birth
defects or other r epr oductive harm.
!
!
U se & Care M anual
Wi th Installation Instructions for the I nstalle r
Printed in US A
W ater Heaters
R esidential G as
W arning: This water heater is not suitable for
use in manufactur ed (mobile) homes!
T ankless
DESIGN
CERTIFIED
®
°F
PRIORITY
POWER
ON/OFF
Remote Control
Assembly Kit
Drain Tubing
(Indoor models only)
