Instruction manual

34
alternate power supply must generate the same voltage, phase, and
frequency (Hz) as shown in Table 11 or the furnace rating plate.
Power from an alternate power supply that is non-sinusoidal may
damage the furnace electronics or cause erratic operation.
Contact the alternate power supply manufacturer for specifications
and details.
Table 11 – Electrical Data
UNIT SIZE
V O L T S ---
H E R T Z ---
PHASE
OPERATING VOLTAGE
RANGE*
MAXIMUM
UNIT
AMPS
UNIT
AMPACITY#
MINIMUM
WIRE
SIZE
AWG
MAXIMUM
WIRE
LENGTH
FT (M)}
MAXIMUM
FUSE OR CKT
BKR
AMPS{
Maximum* Minimum*
040---10 1 1 5 --- 6 0 --- 1 127 104 6.8 9.5 14 39 (11.9) 15
060---10 1 1 5 --- 6 0 --- 1 127 104 7.0 9.7 14 38 (11.5) 15
060---14 1 1 5 --- 6 0 --- 1 127 104 8.4 11.5 14 32 (9.7) 15
080---16 1 1 5 --- 6 0 --- 1 127 104 9.6 13.0 14 28 (8.5) 15
080---20 1 1 5 --- 6 0 --- 1 127 104 14.5 19.1 12 30 (9.1) 20
100---14 1 1 5 --- 6 0 --- 1 127 104 7.6 10.4 14 35 (10.6) 15
100---20 1 1 5 --- 6 0 --- 1 127 104 14.6 19.2 12 29 (8.8) 20
120---20 1 1 5 --- 6 0 --- 1 127 104 14.9 19.6 12 29 (8.8) 20
* Permissible limits of the voltage range at which the unit operates satisfactorily.
# Unit ampacity = 125 percent of largest operating component’s full load amps plus 100 percent of all other potential operating components’ (EAC, humidifier,
etc.) full load amps.
{Time---delay type is recommended.
}Length shown is as measured one way along wire path between furnace and service panel for maximum 2 percent voltage drop.
A12226
Fig. 32 -- Installing J--Box (When Used)
COPPER
WIRE ONLY
ELECTRIC
DISCONNECT
SWITCH
ALUMINUM
WIRE
GROUND
NEUTRAL
LINE VOLTAGE
A11146
Fig. 33 -- Field--Supplied Electrical Box on Furnace Casing
59SC2A