Slant/Fin GXHA-200 - Manual (Page 5)

GALAXY STEAM BOILER 5
ELECTRICAL CONTROLS AND WIRING—
A. The electrical power to the boiler must be on a separately
fused and live circuit.
B. If an external electrical source is utilized, the boiler, when
installed, must be electrically grounded in accordance with
the requirements of the authority having jurisdiction or, in
absence of such requirements, with the National Electrical
Code, ANSI/NFPA No. 70-latest edition.
C. Basic control wiring diagrams are given on pages 16-17.
Other control systems may be factory supplied, see User's
Information Manual and Instructions packed with control
system supplied.
D. After placing the boiler in operation, the safety shut-off
device must be tested. See page 12 safety check.
BOILER ROOM AIR SUPPLY AND VENTILATION
An ample supply of air is required to obtain combustion and
ventilation. Room temperature over 100°F may cause nuisance
tripping of the Blocked Vent Safety Switch.
ALL AIR MUST COME FROM OUTSIDE, directly through wall
openings to the boiler or through unsealed openings around
windows, doors, etc. in the whole building. When buildings are
insulated, caulked and weather-stripped, now or later on, direct
opening to outside may be required and should be provided. If
the boiler is not on an outside wall, air may be ducted to it from
outside wall openings.
The National Fuel Gas Code, ANSI Z223.1-latest edition speci-
fies openings for air under various conditions. Local codes may
specify minimum opening sizes and locations. The following
recommendation applies to buildings of energy-saving construc-
tion, fully caulked and weather-stripped:
Provide one GRILLED opening near the floor and one near the
ceiling on an outside wall near the boiler (or duct from such
openings to the boiler), EACH opening to be a minimum of one
square inch per 2000 Btuh input to ALL APPLIANCES in the
area. For a total appliance input of 200,000 Btuh, each open-
ing will be 100 square inches. A grilled opening 10" x 10" has
100 square inches of area. If fly screen must be used over
openings, double the area and inspect and clean the screen
frequently.
Openings must NEVER be reduced or closed. If doors or win-
dows are used for air supply, they must be locked open.
Protect against closure of openings by snow and debris.
Inspect frequently.
NO MECHANICAL DRAFT EXHAUST OR SUPPLY FANS ARE
TO BE USED IN OR NEAR THE BOILER AREA.
The flow of combustion and ventilating air to the boiler must
NOT be obstructed.
DRAFT HOOD—
The draft hood supplied is part of the listed boiler assembly.
DO NOT alter the hood. See dimensions, page 2.
SPECIAL FLUSHING INSTRUCTIONS
Installation of new boiler may break loose a heavy
accumulation of sediment and scale from old piping
and radiators. It is extremely important to blow
down your McDonnell Cut-off 67 more frequently
the first week.
First week — 3 times
Thereafter — at least once a week
* Exception: McDonnell Cut-off 42A must be blown
down daily.
See "CARE AND MAINTENANCE" for instructions.
Steam Control Assembly