8
GALAXY
VENT DAMPER INSTALLATION
The vent damper referred to in the following instructions is the
Slant/Fin Corporation vent damper.
I. This device is design certified by A.G.A. for use ONLY on
specific Slant/Fin Corp. gas boiler models. These boilers
must also be equipped with a plate which states that the
boiler must or may be used with a Slant/Fin Corp. automatic
vent damper device and indicates the proper vent damper
model number. This device cannot be used with millivolt
ignition system or boilers with input of 300,000 Btu/hr. or
greater equipped with continuous pilot.
II. A.INSTALLATION INSTRUCTIONS BEFORE YOU START
TO INSTALL
1. Read this installation manual, the "DANGER" plate
attached to the top of the boiler, the "WARNING" on the
wiring diagrams, vent damper carton and operator cover.
2. Perform pre-installation inspection as required by ANSI
specification Z21.66.
3. Turn off all electrical power, gas supply and wait for sys-
tem to cool (for previously installed boilers).
4. Select a proper, convenient location (see figures 4 and 5).
5. Carefully unpack the unit. DO NOT FORCE IT OPEN
OR CLOSED. Forcing the damper may damage the
gear train and void the warranty.
WARNING—DANGER
Once you have begun vent damper installation procedure, DO
NOT restore electric power and gas supply until installation and
inspection have been completed (in order to prevent the main
burners from operating). DO NOT operate the boiler until the
vent damper harness "RECEPTACLE B" is plugged into "MALE
PLUG" (as described in the installation instructions), and the
vent damper installation and checkout procedures have been
completed. Failure to observe this warning may create a haz-
ardous condition that could cause an explosion or carbon
monoxide poisoning.
B.1. This device must be installed after the appliance draft
hood (between the draft hood outlet and the connector
to the outdoor chimney or vent) as close to the draft
hood as practicable, and without modification of the
draft hood or the damper. (See figures 4 and 5.)
2. The inlet size of the vent damper must be the same
nominal trade size as the outlet of the draft hood.
3. This device must be located in a venting system or sec-
tion of a venting system so that it serves only the single
appliance for which it is installed. (See fig. 9.)
4. Clearances of not less than 6 inches (152mm) must be
maintained from combustible materials, with provisions
for access for service.
5. GXHA steam boilers are equipped with integral draft
diverter consists of front section (factory assembled to
the boiler) and the rear section (shipped with the boiler).
The rear section must be assembled to the boiler using
three sheet metal screws (see figure 7).
Vent damper may be installed vertical or horizontal
(see figure 8a & 8b)
C.NOW, PROCEED AS FOLLOWS:
1. Remove the front cover of the boiler exposing the wiring
compartment. With all electrical power to boiler off,
locate "MALE PLUG" (if boiler has an input of 300,000
Btu/hr. or greater, locate "Receptacle A") (see wiring
diagram attached to boiler); a copy of this may also be
found in this manual. To find the correct wiring diagram
in this manual, match the number found in the lower
FIGURE 4
FIGURE 5
FIGURE 6
FIGURE 7