Before Installing; Locating The Boiler - Crown Boiler AWR070 Installation Instructions Manual

Gas-fired natural draft hot water boilers
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1) Safe, reliable operation of this boiler depends upon installation by a professional heating contractor in strict accordance with
this manual and the requirements of the authority having jurisdiction.
In the absence of an authority having jurisdiction, installation must be in accordance with this manual and the
National Fuel Gas Code, ANSI Z223.1-latest edition.
Where required by the authority having jurisdiction, this installation must conform to the Standard for Controls and
Safety Devices for Automatically Fired Boilers (ANSI/ASME CSD-1)-latest edition.
2) Make sure that a properly sized chimney is available which is in good condition. Consult the authority having jurisdiction,
Part VI of this manual, and the National Fuel Gas Code for additional information on venting requirements.
3)
Make sure that the boiler is correctly sized:
For heating systems employing convection radiation (baseboard or radiators) use an industry accepted sizing method
such as the I=B=R Guide RHH published by the Air-Conditioning, Heating and Refrigeration Institute (AHRI).
For new radiant heating systems refer to the radiant tubing manufacturer's boiler sizing guidelines.
For systems including a Crown Mega-Stor indirect water heater, size the boiler to have either the Heating Capacity
required for the Mega-Stor or the I=B=R Net Rating required for the heating system, whichever results in the larger
boiler.
For systems that incorporate other indirect water heaters, refer to the indirect water heater manufacturer's instruc-
tions for boiler output requirements.
4) Make sure that the boiler received is configured for the correct gas (natural or LP).
5) Boilers built for installations at altitudes above 2000 ft. require different main burner orifice. Make sure that the boiler is
configured for use at the correct altitude.
FAILURE TO OBSERVE THE FOLLOWING LOCATION REQUIREMENTS COULD RESULT
IN A FIRE, EXPLOSION OR CARBON MONOXIDE (CO) HAZARD.
1) Clearances:
Observe minimum clearances shown below to avoid potential fire hazard. These clearances apply to all combustible
construction as well as noncombustible walls, ceilings and doors. Also see Figures 4.1 and 4.2.
Front (AWR038-210) - 6"
Front (AWR245-280) - Alcove
Left Side - 1" (requires relocation of relief valve to right hand side of boiler - Figure 8.2)
Right Side - 4"
Rear - 6"
Top - 24-1/2" Additional Height May Be Required To Maintain 6" Clearance From All Breeching Components
A 24" service clearance from the jacket is recommended on the left, right, and front of the boiler. These clearances may
be reduced to those shown in Figures 4.1 & 4.2 , however servicing the boiler will become increasingly difficult as these
service clearances are reduced.
III Before Installing
IV Locating the Boiler
WARNING
4

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