Lochinvar EW 150, Руководство дизайнера

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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 (0.9 m)
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° elbows
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
”
(15.2 cm)
above the roof or above normal levels of snow
accumulation. The point of termination for the
air inlet MUST be 24 ” (0.6m) lower than the
point of flue gas termination, if it is located
within 10 feet (3.05 m) 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 water heater. This can result in
incomplete combustion and potentially
hazardous levels of carbon monoxide in the
flue products.
MULTIPLE UNIT APPLICATIONS
Vertical Direct Vent
The combustion air inlet caps for multiple unit
installations MUST maintain the minimum 2 foot
(0.6 m) clearance below the closest vertical flue
outlet if within 10 feet (3.05 m).
Multiple flue outlet caps may be installed side
by side and multiple air inlet caps may be
installed side by side, but the air inlet MUST
always be at least 2 feet (0.6 m) below the
closest flue outlet if the outlet is within 10 feet
(3.05 m).
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
1 3
(FIG. 13) VERTICAL DIRECT VENT
(TABLE E) – VERTICAL DIRECT VENT,
FLUE AND AIR INLET SIZES
MODEL DIRECT VENT AIR INLET
NUMBER FLUE SIZE PIPE
EW 150 4 ” 4 ”
EW 200 4 ” 4 ”
EW 250 5 ” 5 ”
EW 300 5 ” 5 ”
(FIG. 12) MULTIPLE SIDEWALL DIRECT VENT CAPS
AIR INLETS
AIR INLETS
3
’
MIN.
3 ’ MIN.
FLUE OUTLETS