Lochinvar EW 150, Руководство дизайнера

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1 0
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
SIDEWALL AIR INLET
The sidewall air inlet cap is supplied in the
E+ DirectAire Sidewall Vent Kit. Each kit
includes a sidewall combustion air inlet cap to
supply air to a single water heater and
instructions for proper installation. The part
number for each kit is listed by unit size.
Locate units as close as possible to sidewall
where the combustion air supply system will be
installed.
To prevent recirculation of flue products from
an adjacent vent cap into the combustion air
inlet, follow all applicable clearance
requirements in the latest edition of the
National Fuel Gas Code and instructions in
this guide.
The combustion air inlet cap MUST be placed
at least one foot (0.3 m) above ground level
and above normal snow levels.
ROOFTOP AIR INLET
The air inlet cap for the vertical roof top air
inlet is assembled from components purchased
locally. The air inlet cap consists of two 90°
elbows installed at the point of termination for
the air inlet pipe.
The point of termination for the combustion air
inlet cap MUST be at least 2 feet (0.6 m)
below the point of flue gas termination (vent
cap), if it’s located within 10
feet
(3.05 m) of
the flue outlet.
The termination ell on the air inlet MUST be
located a minimum of 12
”
(0.30 m) above the
roof or above normal levels of snow
accumulation. It MUST NOT be placed closer
than 10 feet (3.05 m) from an inside corner of
an L-shaped structure.
Incorrect location of the air inlet cap can allow
the discharge of flue products to be drawn into
the combustion process of the water heater.
Lochinvar
(FIG. 9) E+ DIRECTAIRE VENT WITH VERTICAL AIR INLET
(FIG. 8) E+ DIRETAIRE VENT WITH SIDEWALL AIR INLET
(TABLE C)
E+ DIRECTAIRE VENT SIDEWALL AIR KIT PART NUMBERS
CONVENTIONAL VENT AIR VENT KIT
MODEL NUMBER FLUE SIZE* INLET SIZE PART NUMBER
EW 150 5
”
4
”
SVK 3020
EW 200 5
”
4
”
SVK 3020
EW 250 6
”
5
”
SVK 3021
EW 300 6
”
5
”
SVK 3021
NOTE:
The use of double wall
vent material
for the combustion air
inlet pipe is
recommended in cold
climates to prevent the
condensation of airborne
moisture
in the incoming
combustion air.
*Vent size with 1” increaser installed for conventional negative
draft venting.