W415-1005 / 03.01.11
41
FIGURE 33 - MANOMETER MEASURING GAS
MANIFOLD PRESSURE
14.0 ELECTRICAL
SPECIFICATIONS
14.1 ELECTRICAL WIRING AND CONNECTIONS
Before proceeding with the electrical connections, ensure that the available electrical supply is compatible with
the voltage, frequency and phase listed on the appliance rating plate.
All furnaces are rated 120 vac, 60 Hz, 1 Ø. The amperage rating is 15 amps or less.
Each furnace requires a dedicated 15 amp over-current device, either a 15 amp circuit breaker or a 15 amp
Type D time delay fuse. It is permissible to connect furnace accessories such as humidi
fi
er transformers,
condensate pumps and electronic air cleaners. If adding accessory equipment to the furnace circuit, ensure
that the combined amperages listed on the appliance rating plates does not exceed the rating of the over-
current device.
SHUT OFF ELECTRICAL POWER AT THE FUSE BOX OR SERVICE PANEL BEFORE
MAKING ANY ELECTRICAL CONNECTIONS. FAILURE TO DO SO CAN CAUSE
ELECTRICAL SHOCK RESULTING IN PERSONAL INJURY OR LOSS OF LIFE.
• THE FURNACE CABINET MUST HAVE AN UNINTERRUPTED GROUND.
• A GROUND WIRE IS PROVIDED IN THE ELECTRICAL JUNCTION BOX.
• DO NOT USE GAS PIPING AS A GROUND.
FAILING TO GROUND THE FURNACE PROPERLY CAN RESULT IN ELECTRIC SHOCK
RESULTING IN PERSONAL INJURY OR DEATH.
WARNING
!
!
IMPORTANT:
NEVER ADJUST THE INPUT OF
THE FURNACE TO EXCEED THE
INPUT SHOWN ON THE RATING
PLATE.
Input =
Heating Value of Gas x 3600
Time in Sec. for 1 cu. ft.
where:
•
input is expressed in Btu/hr
•
heating value of the gas is expressed in Btu/ft
3
• and time is the number of seconds required for
the test dial to indicate 1 cubic foot.
If using a gas meter with SI (metric) units:
•
1 cubic foot = 0.0283 cubic meters
•
1 cubic meter = 35.315 cubic feet
•
0.01 cubic meter = 0.3531 cubic feet
•
0.5 cubic meter = 1.766 cubic feet