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The following terms are used throughout this manual to bring attention to the presence of hazards of various risk
levels, or to important information concerning product life.
Table of Contents
I. Pre-Installation ..........................................4
II. Unpack Boiler............................................. 5
III. Water Piping............................................... 6
IV. Gas Piping ................................................... 8
V. Venting ........................................................ 9
VI. Electrical.................................................... 12
VII. System Start-up........................................ 13
VIII. Service Instructions ................................ 21
IX. Repair Parts ............................................... 24
CAUTION
Indicates a potentially hazardous
situation which, if not avoided, may result
in moderate or minor injury or property
damage.
NOTICE
Indicates special instructions on
installation, operation, or maintenance
which are important but not related to
personal injury hazards.
DANGER
Indicates an imminently hazardous
situation which, if not avoided, will result
in death, serious injury or substantial
property damage.
WARNING
Indicates a potentially hazardous
situation which, if not avoided, could
result in death, serious injury or
substantial property damage.
NOTICE
USA boilers built for installation at altitudes greater than 2,000 feet above sea level have
been specially orificed to reduce gas input rate 4 percent per 1,000 feet above sea level
per the National Fuel Gas Code, NFPA 54/ANSI Z223.1, Section 8.1.2 and Appendix F.
Canadian boilers' orifice sizing is indicated on the rating label. High altitude boiler
models are identifiable by the second digit in the model number suffix on the rating
label:
20_PV_I-__2: Less than 2000 ft. elevation
20_PV_I-__4: 2000 ft. and higher elevation, Canada
20_PV_I-__5: 2000 ft. and higher elevation, USA