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1.
Connect gas service from meter to control assembly in
accordance with ANSI Z223.1 and local codes or utility.
A ground joint union should be installed for easy removal
of gas control for servicing. A drip leg or trap must be
installed at the bottom of a vertical section of piping at the
inlet to the boiler. A pipe compound resistant to the action
of liquified petroleum gases must be used on all threaded
pipe connections. Check with the local utility for location
of manual shutoff valve if required. (Figure #13)
Figure #13
2.
The gas line should be of adequate size to prevent undue
pressure drop and never smaller than the pipe size of the
main gas control valve. (See Chart)
ELECTRICAL WIRING
See wiring diagrams on the following two
pages for details.
Electrical wiring must conform with the National Electrical
Code, ANSI/NFPA No 70 latest edition when installed in the
United states, the CSA C22.1 Canadian Electrical Code, Part
1, when installed in Canada, and/or the local authority having
jurisdiction.
!
When an external electrical source is utilized,
the boiler, when installed, must be electrically
grounded in accordance with these require-
ments.
CONNECTING GAS SERVICE
ELECTRICAL SECTION
WARNING
MAXIMUM CAPACITY OF PIPE IN CUBIC FEET OF GAS/HOUR
(Gas Pressure = 0.5 psig or less, Pressure Drop = 5 in. w/c)
Length of
Pipe (Feet)
½"
10
175
20
120
30
97
40
82
60
66
80
57
100
50
For additional information refer to the National Fuel Gas Code
Handbook.
3.
To check for leaks in gas piping, use a soap and water
solution or other approved method.
!
Do not use an open flame!!
4.
Disconnect boiler from gas supply piping system during
any pressure testing of the gas piping. After reconnecting,
leak test gas connection and boiler piping before placing
boiler back into operation.
Min. Supply Pressure
Max. Supply Pressure
Manifold Pressure
IMPORTANT: Install a fused disconnect
switch between boiler and electric panel at a
convenient location.
THERMOSTAT INSTALLATION
1.
Thermostat should be installed on an inside wall about
four feet above the floor.
2.
NEVER install a thermostat on an outside wall.
3.
Do not install a thermostat where it will be affected by
drafts, hot or cold pipes, sunlight, lighting fixtures, televi-
sions, a fireplace, or a chimney.
4.
Check thermostat operation by raising and lowering ther-
mostat setting as required to start and stop the burners.
5.
Instructions for the final adjustment of the thermostat are
packaged with the thermostat (adjusting heating anticipa-
tor, calibration, etc.)
13
Nominal Iron Pipe Size
¾"
1"
360
680
250
465
200
375
170
320
138
260
118
220
103
195
WARNING
Natural Gas
Propane
5" w.c.
11" w.c.
14" w.c.
14" w.c.
3.5" w.c.
10.5" w.c.
1¼"
1400
950
770
660
530
460
400
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