Electrical Controls And Wiring; Boiler Room Air Supply And Ventilation - Slant/Fin Galaxy GXH-300H Installation And Operating Instructions Manual

GALAXY
than maximum pressure when the boiler or any other appliance is
turned on or off.

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 Canadian Electric
Code – CSA-C22.1, Part 1 – latest edition.
C. Basic control wiring diagrams are supplied. 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 shutoff
device must be tested. See page 14 safety check.

BOILER ROOM AIR SUPPLY AND VENTILATION

An ample supply of air is required to obtain combustion and
ventilation. ALL AIR COMES FROM OUTSIDE, directly through
wall openings to the boiler or through unsealed openings
around windows, doors, etc. in the whole building. When build-
ings are insulated, caulked and weather stripped, now or later
on, direct openings to outside may be required and should be
provided. If the boiler is not near an outside wall, air may be
ducted to it from outside wall openings.
Provisions for combustion and ventilation air must be made in
accordance with section 5.3, Air for Combustion and Ventilation,
19 mm ( / ")
3
4
RELIEF VALVE
NIPPLE 6 MM ( / ")
1
4
× CLOSE
NIPPLE 6 MM × 64
NIPPLE
13 MM × 140 MM
( / × 6") THD AT
1
2
BOTH ENDS
TEE 13 MM × 16 MM
NIPPLE
13 MM × 152 MM
( / × 5 / ") THD AT
1 1
2 2
BOTH ENDS
TEE
13 MM × 13 MM
× 13 MM
( / × / × / ")
1 1 1
2 2 2
13 mm (
O.D. TUBE
CUT TO SIZE
AT THIS END
16 MM ( / ") COMP .
5
8
ADAP . FITTING
ELBOW
6 mm (1/4")
× 90°
WATER LEVEL
648 mm (25 / ")
1
MM ( / × 2 / ")
1 1 2
4 2
OFF FLOOR
ADAPTER
10 MM ( / ") MALE
3
8
PIPE TO 13 MM ( / ")
1
( / × / ") ADAPTER
1 5 2
2 8
O.D. COMP . ADAP .
NIPPLE
13 MM × 51 MM
(1/2 × 2")
of the National Fuel Gas Code, ANSI Z223.1-latest edition or
CSA B149.1-00 for natural gas and propane, or applicable pro-
visions of the local building codes. The following recommenda-
tion applies to buildings of energy-saving construction, fully
caulked and weather stripped:
INSTALLATION IN ENCLOSED BOILER ROOM REQUIRES
TWO UNOBSTRUCTED OPENINGS FOR PASSAGE OF AIR
INTO THE BOILER ROOM:
A. Air drawn horizontally from outdoors DIRECTLY through
an outside wall; one louvered opening near the floor and
one louvered opening near the ceiling, each opening with a
minimum FREE air passage area of 550 mm
square inch per 4000 BTUH) of total appliances' input.
B. Air drawn horizontally through HORIZONTAL DUCTS;
one opening near the floor and one opening near the ceiling,
each opening with a minimum FREE air passage area of
1100 mm
appliances' input.
C. Air drawn VERTICALLY from outdoors; one opening at the
floor and one opening at the ceiling, each opening with a
minimum FREE air passage area of 550 mm
square inch per 4000 BTUH) of total appliances' input.
D. Air drawn from inside the building; one opening near the
floor and one opening near the ceiling, each opening with a
minimum FREE air passage area of 2200 mm
square inch per 1000 BTUH) of total appliances' input.
19 mm ( / ")
3
4
RELIEF VALVE
/ ")
1
2
6mm×6mm×6mm
/ " × / " ×
1 1
4 4
6mm ( /
1
4
SIPHON
2
per kW (1 square inch per 2000 BTUH) of total
/ "
1
4
")
SPECIAL FLUSHING INSTRUCTIONS
Installation of new boiler may break loose a heavy
accumulation of sediment and scale from old pip-
ing 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 & MAINTENANCE" for instructions.
5
2
per kW (1
2
per kW (1
2
per kW (1