Lochinvar EFFICIENCY PLUS, Руководство дизайнера

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Multiple Unit Applications
(Horizontal Direct Vent)
The combustion air inlet caps for multiple unit
installations
must maintain the minimum 3
foot (0.9m) radius clearance below or
horizontally from the closest flue outlet.
Multiple flue outlet caps may be installed side
by side, and multiple air inlet caps may be
installed side by side, but the 3 foot (0.9m)
radius minimum clearance between air inlet
and flue outlet
must be maintained.
All clearance and installation requirements in
this section and the applicable portions of the
general venting section
must be maintained
on multiple unit installations.
Vertical Direct Vent
Vertical direct vent applications do not require
a vent kit to be supplied by Lochinvar. The
vent cap and air inlet cap for vertical direct
vent applications are fabricated or purchased
in the field.
A vertical vent cap, as specified by the vent
material manufacturer, is used to vent the flue
products to the outdoors. The air inlet cap
consists of two 90° ells installed at the point
of termination for the air inlet pipe. The
termination ell on the air inlet
must be
located a minimum of 12 ” (15.2cm) above
the roof or above normal levels of snow
accumulation. The point of termination for the
air inlet shall be 24
”
(0.6m) lower than the
point of flue gas termination, if it is located
within 10
ft.
(3.0m) of the flue outlet.
Incorrect installation and/or location of the
air inlet cap can allow the discharge of flue
products to be drawn into the combustion
process on the boiler. This can result in
incomplete combustion and potentially
hazardous levels of carbon monoxide in the
flue products.
Lochinvar
12 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
+
B O I L E R
6 1 5 - 8 8 9 - 8 9 0 0
(FIG. 13) VERTICAL DIRECT VENT
CAUTION!
Boilers which are shut
down or will not
operate may
experience freezing
due to convective air
flow in the air inlet
pipe connected to the
unit. Proper freeze
protection MUST be
provided.
(FIG. 12) MULTIPLE SIDEWALL VENT CAPS
AIR INLETS
AIR INLETS
3 feet
MIN.
3 feet
MIN.
FLUE OUTLETS
CAUTION!
Maintain a minimum
3 foot (0.9m) radius
clearance between
the combustion air
inlet cap and the
flue outlet cap.
(TABLE E) – VERTICAL DIRECT VENT,
FLUE AND AIR INLET SIZES.
MODEL DIRECT VENT AIR INLET
NUMBER FLUE SIZE PIPE
EB150 4” 4”
EB200 4” 4”
EB250 5” 5”
EB300 5” 5”