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L o c h i n v a r
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S G U I D E E F F I C I E N C Y
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W A T E R H E A T E R
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OUTDOOR INSTALLATION
Units are self venting and can be used outdoors
when installed with the optional Outdoor Vent
Kit. This kit includes a one piece top cover
which replaces the standard two piece cover,
air inlet cap, exhaust cap and gas valve cover.
The cap mounts directly to the top of the water
heater and covers the flue outlet and combustion
air inlet openings on the jacket. No additional
vent piping is required. Maintain a minimum
clearance of 3" (76mm) to combustible surfaces
and a minimum of 3" (76 mm) clearance to the
air inlet. An outdoor unit should not be located
so that high winds can deflect off of adjacent
walls, buildings or shrubbery causing
recirculation. Recirculation of flue products may
cause operational problems, bad combustion or
damage to controls. The unit should be located
at least 3 feet (0.91m) from any wall or vertical
surface to prevent adverse wind conditions from
affecting performance.
Multiple unit outdoor installations require 48"
(1.22m) clearance between each vent cap. The
outdoor cap must be located 4 feet (1.22m)
below and 4 feet (1.22m) horizontally from any
window, door, walkway or gravity air intake.
The combustion air inlet of the outdoor cap must
be located at least one foot (0.30m) above
grade and above normal snow levels. The
water heater must be at least 10 feet (3.05m)
away from any forced air inlet and at least 3
feet (0.91m) outside any overhang. Do not
install in locations where rain from building
runoff drains will spill onto the water heater.
Lochinvar must furnish an outdoor vent kit in
accordance with CSA international
requirements. Each kit includes the flue
outlet/combustion air inlet, gas valve cover,
piece unit top and pump cover.
Freeze Protection-
Outdoor Installation
A snow screen should be installed to prevent
snow and ice accumulation around the
appliance or its venting system.
If for any reason the unit is to be shut off:
(a.) Shut off water supply.
(b.) Drain unit completely.
(c.) Drain pump and piping.
If freeze protection is not provided for the
system, a low ambient temperature alarm or
automatic drain system is recommended.
Lochinvar
(FIG. 14) OUTDOOR VENTING
(TABLE F)
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OUTDOOR VENT KITS
MODEL
OUTDOOR
NUMBER
VENT KIT
EW150
ODK3062
EW200
ODK3063
EW250
ODK3067
EW300
ODK3068
*Minimum diameter, installer may increase diameter one pipe
size for ease of installation if needed.