Noritz GHQ-C2801WX-FF US, Руководство по установке, Страница: 33 / 84

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6.5.2 Consideration for Installation
• When installing this Combi Boiler in an
area with a large amount of lint such as a
commercial Laundromat, direct vent (“-DV”)
system must be used.
The “-SV” configuration (using SV Conversion
Kit) is prohibited.
• When installing this Combi Boiler in a mobile
home, all combustion must be drawn directly
from the outdoors.
The “-SV” configuration (using SV Conversion
Kit) is prohibited.
DANGER
• SV Conversion Kit SV-CK-2 is required for the air
intake.
• It is recommended that a carbon monoxide alarm
installed in same room space as Combi Boiler
when supplying combustion air from the indoors.
To prevent possible personal injury or death
due to asphyxiation, common venting with
other manufacturer’s induced draft appliances
is not allowed.
WARNING
Failure to change DIP switch #3 and use SV
Conversion Kit SV-CK-2 could result in a fire or
explosion causing property damage, personal
injury or death.
Refer to the instructions provided with the
conversion kit for additional details.
WARNING
For SV Conversion Kit
• Disconnect the electrical power and then turn ON
DIP switch #3 if combustion air will be supplied
from the indoors.
Refer to page 67 for the location of the DIP switch
bank and how to change the DIP switch.
Failure to perform this step will result a “73” code
displayed on the Operation Display and a cease in
operation.
If this occurs, disconnect, then reconnect the
electrical power to the Combi Boiler to reset the
system.
Here
6.5.3 Combustion Air
NOTE
Provide adequate combustion air so
as to not create negative pressure
within the building.
• Supply combustion air to the Combi Boiler as per
the National Fuel Gas Code, ANSI Z223.1 - latest
edition and in Canada, in accordance with the
Natural Gas and Propane Installation Code CSA
B149.1 - latest edition.
• A minimum free area of each opening:
• If the Combi Boiler is installed in a mechanical
closet, a minimum of permanent clearance
of 4 in. or more in front of the Combi Boiler is
required. In order to facilitate maintenance and
repair, a minimum clearance (24 in. or more)
should be met.
• If combustion air will be provided through a duct,
size the duct to provide as below.
- NRCB199DV (GHQ-C3201WX-FF US):
70 ft
3
of fresh air per minute
- NRCB180DV (GQ-C2801WX-FF US):
63 ft
3
of fresh air per minute
H
H
W
W
Provide two
permanent
openings to allow
circulation of
combustion air.
(e.g. SV Conversion Kit installation)
Indoor make up
air is provided
200 in.²
example 20 in. (W) × 10 in. (H)
Outdoor
make
up air is
provided
Direct or Vertical ducts 50 in.²
example 10 in. (W) × 5 in. (H)
Horizontal ducts 100 in.²
example 20 in. (W) × 5 in. (H)
[NRCB199DV (GHQ-C3201WX-FF US)]
Indoor make up
air is provided
180 in.²
example 20 in. (W) × 9 in. (H)
Outdoor
make
up air is
provided
Direct or Vertical ducts 45 in.²
example 10 in. (W) × 4 1/2 in. (H)
Horizontal ducts 90 in.²
example 20 in. (W) × 4 1/2 in. (H)
[NRCB180DV (GHQ-C2801WX-FF US)]
Venting the Combi Boiler