Outdoor Installation - Lochinvar COPPER-FIN II CF401 Designer's Manual

Lochinvar
NOTE:
Outdoor models must
MODEL
have an optional
NUMBER
CF401
vent cap and air inlet
CF501
shield installed.
CF651
CF751
The installer supplies all vent pipe
material.
NOTE:
Some discoloration Combined Air Inlet Points
to building exterior
In most installations, the combustion air inlet
or unit surfaces
pipe will be a dedicated system with one air
can be expected.
inlet pipe per water heater.
Adjacent brick or
masonry surfaces
Multiple air inlets may be combined to a
should be protected
single common connection if the common air
with a rust resistant
inlet pipe has a cross sectional area equal to
sheet metal plate.
or larger than the total area of all air inlet
pipes connected to the common air inlet pipe.
The air inlet point for multiple water heater air
inlets must be provided with an exterior
opening which has a free area equal to or
greater than the total area of all air inlet pipes
connected to the common air inlet. This
exterior opening for combustion air must
connect directly to the outdoors.
The total length of the combined air inlet pipe
must not exceed a maximum of 50
(15.25m) equivalent feet. Subtract 5 feet
(1.52m) for each elbow in the air inlet pipe.
Deduct the restriction in area provided by any
screens, grills or louvers installed in the
common air inlet point. These are common on
the sidewall air inlet openings. Screens, grills
or louvers installed in the common air inlet
can reduce the free area of the opening from
25% to 75% based on the materials used.
16
L o c h i n v a r
(TABLE H)
SIDEWALL VENT KIT PART NUMBERS
FLUE PART
SIZE NUMBER
6 " SVK3043
6 " SVK3043
8 " SVK3044
8 " SVK3044
'
D E S I G N E R S G U I D E C O P P E R

OUTDOOR INSTALLATION

(FIG. 16) OUTDOOR VENTING
Units are self venting and can be used
outdoors when installed with the optional
Outdoor Cap. This 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" (76 mm)
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.
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