Vent Piping; Gas Piping - Slant/Fin Galaxy GXH-300H Installation And Operating Instructions Manual

4
GALAXY GXH SERIES
MODELS GXH-105
THROUGH GXH-190
MINIMUM CLEARANCE
FOR COMBUSTIBLE
CONSTRUCTION.
MINIMUM CLOSET
CLEARANCE.
Front 152 mm (6")
Rear 152 mm (6")
Left Side 152 mm (6")
Right Side 457 mm (18")
Top 914 mm (36")*
Flue
Connector 152 mm (6")
Type 'B' Vent 25 mm (1")
* Allow extra clearance from combustibles for additional venting.
B. Provide accessibility clearance of 610 mm (24") on sides
requiring servicing and 457 mm (18") on sides used
for passage.
C. All minimum clearances shown above must be met. This
may result in increased values of some minimum clear-
ances in order to maintain the minimum clearances of oth-
ers.
D. Clearance from steam and hot water pipes shall be
25 mm (1"). **
** At points where hot water or steam pipes emerge from a floor, wall or ceil-
ing, the clearance at the opening through the finished floor boards or wall
or ceiling boards may be not less than 13 mm (
shall be covered with a plate of noncombustible material.
KEEP THE BOILER AREA CLEAR AND FREE FROM
COMBUSTIBLE MATERIALS, GASOLINE AND OTHER
FLAMMABLE VAPORS AND LIQUIDS.
SAFETY—

VENT PIPING—

A. Vent piping installation must be in accordance with the
requirements of the local gas utility, local building codes and
other authorities having jurisdiction.
B. Boiler vent pipe must be the full diameter of the boiler draft
hood outlet. See dimensions, page 2. If a vent damper is
added, its diameter must be equal to the hood outlet and
must be located past the hood outlet. See installation
instructions furnished with vent damper and in the section
"Vent Damper Installation" of this instruction book.
C. If more than one appliance vents into a common breeching,
the area of the breeching must be equal to the area of the
largest vent plus 50% of the area of the additional vent areas.
Vent connectors serving appliances vented by natural draft
shall not be connected into any portion of mechanical draft
systems operating under positive pressure. Horizontal
breeching or vent pipe should be as high as possible, con-
sistent with codes, so that vertical vents from appliances will
have a high rise above draft diverter openings. All horizontal
runs must slope upwards not less than 20 mm/m (
foot) of run. Horizontal portions of the venting system must
be supported to prevent sagging by securing each joint with
metal screws and by providing hangers spaced no greater
than 1524 mm (5 feet) apart.
D. Vent or breeching into chimney should not be inserted past
the inside wall of the chimney liner.
MODELS GXH-210 TO
GXH-300H, GX-225 TO
GX-250.
MINIMUM CLEARANCE
FOR COMBUSTIBLE
CONSTRUCTION.
MINIMUM ALCOVE
CLEARANCE.
Front Alcove
Rear 152 mm (6")
Left Side 152 mm (6")
Right Side 457 mm (18")
Top 914 mm (36")*
Flue
Connector152 mm (6")
Type 'B' Vent 25 mm (1")
/ "). Each such opening
1
2
/ inch per
1
4
E. All venting means should be inspected frequently. See Care
and Maintenance and separate User's Information Manual.

GAS PIPING—

A. Local installation codes apply. The pipe joint compound used on
threads must be resistant to the action of liquefied petroleum gases.
B. The gas supply line to the boiler should be run directly from the meter
for natural gas or from the fuel tank for L.P . propane gas. See page 2
for location of union and manual main shut-off valve that may be
specified locally.
Selecting pipe size for natural gas:
1. Measure or estimate the length of piping from the meter to the
installation site.
2. Consult gas supplier for heating value of gas-W/m
3. Divide boiler rated input by heating value to find gas flow in pip-
ing (m /hr) (cu. ft. per hour).
3
4. Use table below to select proper pipe size.
Example: Boiler model GG-300 is to be installed. Distance from gas
meter to the boiler is 15.24 m (50 ft). Heating value of natural gas is
10560 W/m (1020 BTU/cu. ft.) Select proper pipe size.
3
87 930 W/hr
Gas flow =
10 560 W/m
300,000 BTU/hour
(
Gas flow =
1020 BTU/cu. ft.
At 15.24 m (50 ft.) length of pipe, match required capacity from table
below (choose higher capacity, in this case 12.5 m
hour). Required pipe size is 32 mm (1
Improper gas pipe sizing will result in pilot flame outages, insufficient
heat and other installation difficulties. For more information and also
if other appliances are to be attached to the piping system, see
Appendix C of National Fuel Gas Code ANSI Z223.1-latest edition or
CSA B149.1-00 for natural gas and propane.
C. The boiler and its gas connection must be leak tested before placing
the boiler in operation. Use liquid soap solution for all gas leak test-
ing. Do not use open flame.
This boiler and its individual shutoff valve must be disconnected from
the gas supply piping system during any pressure testing of that sys-
tem at test pressures in excess of 3.5 kPa (
be isolated from the gas supply piping system by closing its individ-
ual manual shutoff valve during any pressure testing of the gas sup-
ply piping system at test pressures equal to or less than 3.5 kPa (
PSIG).
D. All gas piping used should be inspected thoroughly for cleanliness
before makeup. A sediment trap must be provided, as illustrated on
page 2.
E. The minimum and maximum gas supply pressure (at the inlet of gas
valve) are shown on the boiler rating plate for the type of gas used.
Gas supply pressure should never be less than minimum or more
Length
Pressure Drop = 8mm (.3") in water Specific Gravity = 0.60
of Pipe
Iron Pipe Size (Ips)—inches
13mm ( / ") 19mm (
1
2
m ft m /hr cu.ft./hr. m /hr cu.ft./hr. m
3 3
3.0 10 3.7 132 7.9 278
6.1 20 2.6 92 5.4 190
9.1 30 2.1 73 4.3 152
12.2 40 1.8 63 3.7 130
15.2 50 1.6 56 3.3 115
18.3 60 1.4 50 3.0 105
21.3 70 1.3 46 2.7
24.3 80 1.2 43 2.5
27.4 90 1.1 40 2.4
30.5 100 1.1 38 2.2
At pressure drop of 0.3 in. water, specific gravity = 0.60.
(BTU/cu. ft.).
3
= 8.3 m /hr
3
3
= 294 cu. ft. per hour
(440 cu. ft.) per
3
/ ").
1
4
/ PSIG). This boiler must
1
2
Gas Flow In Piping
/ ") 25mm (1") 32mm (1 / ") 38mm (1
3 1
4 4
/hr cu.ft./hr. m /hr cu.ft./hr. m
3 3
14.7 520 29.7 1050 45.3 1600
9.9 350 20.7 730 31.1 1100
8.1 285 16.7 590 25.2 890
6.9 245 14.2 500 21.5 760
6.1 215 12.5 440 19.0 670
5.5 195 11.3 400 17.3 610
96 5.1 180 10.5 370 15.9 560
90 4.8 170 9.9 350 15.0 530
84 4.5 160 9.1 320 13.9 490
79 4.2 150 8.6 305 13.0 460
GALAXY
)
/
1
2
/ ")
1
2
/hr cu.ft./hr.
3