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GALAXY

B. Provide accessibility clearance of 24" on sides requiring ser-

vicing and 18" on sides used for passage.

C. All minimum clearances shown above must be met. This

may result in increased values of some minimum clearances
in order to maintain the minimum clearances of others.

D. Clearance from steam and hot water pipes shall be 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 1/2". Each such opening shall be
covered with a plate of noncombustible material.

SAFETY—

KEEP THE BOILER AREA CLEAR AND FREE FROM
COMBUSTIBLE MATERIALS, GASOLINE AND OTHER
FLAMMABLE VAPORS AND LIQUIDS.

VENT PIPING—

A. Vent piping installation must be in accordance with ANSI

Z223.1-latest edition, National Fuel Gas Code, Part 7,
Venting of Equipment. Other local codes may also apply
and must be followed.

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 1/4 inch per foot of
run. Horizontal portions of the venting system must be sup-
ported to prevent sagging by securing each joint with metal
screws and by providing hangers spaced no greater than 5
feet apart.

D. Vent or breeching into chimney should not be inserted past

the inside wall of the chimney liner.

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 petro-
leum 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 (BTU/cu. ft.).
3. Divide boiler rated input by heating value to find gas flow

in piping (cu. ft. per hour).

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 50 ft. Heating value of natural
gas is 1020 BTU/cu. ft. Select proper pipe size.

At 50 ft. length of pipe, match required capacity from table
below (choose higher capacity, in this case is 440 cu. ft. per
hour). Required pipe size is 1-1/4". 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.

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 testing. DO NOT use open flame.
This boiler and its individual shut-off valve must be discon-
nected from the gas supply piping system during any pres-
sure testing of that system at test pressures in excess of 1/2
PSIG.
This boiler must be isolated from the gas supply piping sys-
tem by closing its individual manual shut-off valve during any
pressure testing of the gas supply piping system at test
pressures equal to or less than 1/2 PSIG.

D. All gas piping used should be inspected thoroughly for

cleanliness before makeup. A sediment trap must be provid-
ed, 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 than maximum pressure when the
boiler or any other appliance is turned on or off.

GALAXY GX

GXH SERIES

GXHA SERIES

MODELS GXH-105

THROUGH GXH-190

MINIMUM CLEARANCE

FOR COMBUSTIBLE

CONSTRUCTION.

MINIMUM CLOSET

CLEARANCE.

Front

Rear