LAARS Mighty Max HH (Sizes 320M - 400M) - Installation, Operation and Maintenance Instructions - Manual (Page 12)

Page 12
LAARS Heating Systems
the latest edition of ANSI Z223.1/NFPA 54. In
Canada, installation must be in accordance with CSA
B149.1, and applicable local codes.
There are a variety of ways to provide venting
and combustion air for the boiler (see Figure 8).
The Mighty Max HH boiler is certified as a true
direct vent unit when installed according to the
instructions for horizontal venting and ducted
combustion air. This can be done even if the runs are
vertical.
2.11Top-to-Rear Vent Collar Conversion
The Mighty Max HH boiler is shipped with the
vent collar on top of the heater. Follow this procedure
to convert it for rear connection (see Figure 9).
Figure 9. Top-To-Rear Vent Collar.
Adapter Plate
Top Panel
Vent
Collar/Stack
Blank Plate
(Boiler
Jacket)
Blank Plate On
Flue Collector
Blank Plate On
Boiler Jacket
Top Panel
1. Removal of Blank Plate and Adapter
Plate From Boiler
3. Blank Plate Placement
Over Stack Top Opening
Blank Plate
(Flue
Collector)
Vent
Collar/Stack
2. Removal of Blank Plate From
Rear of Flue Collector
4. Connecting Vent Collar/Stack
to Flue Collector
14. Within three (3) days of start-up, recheck all air
bleeders and the expansion tank as described in
Steps 4 and 8 above.
IMPORTANT
The installer is responsible for identifying to the
owner/operator the location of all emergency
shutoff devices.
2.10Venting and Combustion Air
Information
Provisions for venting and supply of air for
venting and combustion must be done in accordance
with these instructions and applicable requirements of
OUT OF
PRODUCTION