Indoor Unit; Outdoor Unit - York E1FB012 Installation Instruction

515.26-N1Y
The crankcase heater, when furnished, is energized whenever
the compressor is not running. Check for proper operation by
feeling for heat on the compressor where the heater is installed.
The heater should be energized for at least 8 hours before the
thermostat is set to operate the compressor.
CAUTION: An attempt to start the compressor without at least
8 hours of crankcase heat will damage the com-
pressor.
A warning label with an adhesive back is supplied in the unit
installation instruction packet. This label should be attached to
ALL WIRING TO BE IN ACCORDANCE WITH NATIONAL ELECTRIC CODE AND/OR LOCAL CODES
THERMOSTAT
POWER WIRING
24V CONTROL WIRING
(NEC CLASS 2)
7 WIRES
THERMOSTAT
R
G
O
B or C
L or X
W
Y
2
T
2
E
FIELD
INSTALLED
JUMPER
1
Jumper terminals E and W to heat
on first stage during Emergency Heat.
2
Terminal not used on all thermostats.
FIGURE 3 - TYPICAL FIELD WIRING (AIR HANDLER WITH ELECTRIC HEAT)
4

INDOOR UNIT

LOW VOLTAGE TERMINAL BLOCK
IN AIR HANDLER WITH ELECTRIC HEAT
R
5 3
6 0
6 6
G
O
B
X
W
Y
1
CIRCUIT
BREAKER***
3
Check the low voltage terminal block on the indoor unit for the actual arrangement of the terminals.
4
Connect power wiring to terminal block 3TB on units without electric heat or units without a circuit breaker..
the field supplied disconnect switch where it will be easily seen.
See below:
IF POWER HAS BEEN OFF FOR 8 HOURS OR LONGER,
DISCONNECT SWITCH MUST BE TURNED ON 8 HOURS
BEFORE THERMOSTAT IS SET TO "HEAT", "COOL" OR
"AUTO".
3,4
7 WIRES
GRD.
LUG
IMPORTANT
035-03095A

OUTDOOR UNIT

DEFROST
CONTROL
R
X
GRD.
O
SCREW
CONTACTOR
66
W
T2
T1
Y
M
B
L 2
L1
THERMISTOR
POWER WIRING
208/230-1-60
Central Environmental Systems