Lochinvar EFFICIENCY PLUS, Руководство дизайнера

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8 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
When each unit is installed with an individual
vent, and the negative draft is higher than the
specified range (0.02 to 0.05 inches of water
column), a barometric damper will be necessary.
Multiple unit installations with combined
venting require barometric dampers to
regulate draft at each unit. The negative
draft
must be within the range of 0.02 to
0.05 inches of water column to ensure
proper operation.
All draft readings are made while the unit is
in stable operation (approximately 2 to 5
minutes).
For this type of installation, it is best to use a
draft control for each boiler located on the
riser between the vent outlet and the
breeching - Location “A”. (Figure 7)
When this riser is too short to permit the
installation of a control, locate a separate
control for each boiler on the main breeching
as illustrated in Location “B”. (Figure 7)
If, because of general crowding or other
reasons, neither of these locations are
possible, use a single large control in the
breeching between the boiler nearest the
chimney and the chimney, as shown in
Location “C”. (Figure 7)
Conventional Venting with Direct
Combustion Air Intake (E+Vent)
This vent system uses two pipes, one vertical
pipe with a roof top termination for the flue
products and one pipe for combustion air. The
combustion air pipe may terminate
horizontally with a sidewall air inlet or
vertically with a roof top air inlet. All
instructions for “Conventional Venting -
Negative Draft” apply to “Conventional
Venting with Direct Combustion Air”. The flue
may be combined with the vent from any
other negative draft, Category I appliances.
Utilize Category I type “B” vent material for
venting flue products.
Lochinvar
WATER HEATER/BOILER
BAROMETRIC DAMPER ON SINGLE UNIT INSTALLATION
Lined
Chimney
WATER HEATER/BOILER
BAROMETRIC DAMPER ON SINGLE UNIT INSTALLATION
(FIG. 6) BAROMETRIC DAMPER INSTALLATION
(FIG. 7) MULTIPLE UNIT BAROMETRIC
DAMPER INSTALLATION
NOTE:
An unlined masonry
chimney should not be
used to vent flue
products from this high
efficiency appliance.