The indoor unit
MUST
be installed so that
the ignition system components are
protected from water (dripping, spraying,
rain, etc.) during appliance operation and
service (circulator replacement, control
replacement, etc.)
Units located in a residential garage
MUST
be installed so that burners and
ignition devices have a minimum clearance
of 18" (46 cm) above the floor. The units
shall be located or protected to prevent
physical damage by a moving vehicle.
The appliance
MUST
be installed on a
level floor. A combustible wood floor may
be used without additional bases or special
floor buildup. Maintain required clearances
from combustible surfaces.
The appliance
MUST NOT
be installed on
carpet or other combustible material other
than wood flooring.
SPECIAL LOCATION:
OUTDOOR USE
Outdoor models have additional location
and clearance requirements. These requirements
must be adhered to carefully, since wind, rain,
snow and cold cannot be controlled in outdoor
applications. See Outdoor Installation, in the
venting section on page 15.
COMBUSTION & VENTILATION AIR
Provisions for combustion and ventilation air
MUST
be in accordance with Section 5.3, Air
for Combustion and Ventilation, of the latest
edition of the National Fuel Gas Code, ANSI
Z223.1; or in Canada, the latest edition of
CGA Standard B149 Installation Code for
Gas Burning Appliances and Equipment; or
provisions of the local building codes.
3.
5.
4.
L o c h i n v a r
D E S I G N E R
’
S G U I D E E F F I C I E N C Y
+
W A T E R H E A T E R
6 1 5 - 8 8 9 - 8 9 0 0
3
(TABLE A)
CLEARANCES FROM COMBUSTIBLE CONSTRUCTION
RIGHT SIDE
1
”
REAR
1
”
LEFT SIDE
6
”
(24
”
suggested for service)
FRONT
3
”
(24
”
suggested for service)
Suitable for closet installation
TOP
3
”
*Allow sufficient space for servicing pipe connections, pump and other
auxiliary equipment, as well as the appliance.
(FIG. 1) WATER HEATER EQUIPMENT &
CONTROL ORIENTATION
FLUE PRODUCTS
VENT
HOT WATER
OUTLET
BURNER INSPECTION
PORT
GAS
CONNECTION
COLD WATER
INLET
BACK
TERMINAL STRIP
(INSIDE)
FRONT
DRAIN
120V ELECTRICAL
CONNECTION
AIR INLET
EW 150-300
LEFT SIDE
CAUTION!
EXHAUST FANS: Any
fan or equipment which
exhausts air from the
equipment room may
deplete the combustion
air supply and/or cause
a down draft in the
venting system. If a
fan is used to supply
combustion air to the
equipment room, it
must be sized to make
sure that it does not
cause drafts which
could lead to nuisance
operational problems
with the water heater.
2.
