FORM 100.50-EG5 (108)
31
JOHNSON CONTROLS
is called from the thermostat, the Supply Fan will start.
Ventilation functions (if equipped) will be permitted to
run with an occupied signal. Economizer functions will
operate with a “G” call and a call for cooling.
HEATING OPERATION
Thermostat Control
If a 7-wire thermostat (2 Cool/2 Heat) controls the unit,
all zone-temperature setpoint-control is maintained at
the thermostat. With this operation, the unit remains idle
until it receives a stage call from the thermostat. If “G”
is called from the thermostat, the Supply Fan will start.
Ventilation functions (if equipped) will be permitted to
run with an occupied signal.
TABLE 22 –
POWER-SUPPLY-CONDUCTOR SIZE RANGE
Dual-Point TB
Supply
Voltage
Single-Point
TB
Single-Point
Disconnect
TB 1
TB 2
208V
(2*) 250 kcmil-500 kcmil
(2*) 2 AWG-500 kcmil
6 AWG-400 kcmil
6 AWG-350 kcmil
230V
(2*) 250 kcmil-500 kcmil
(2*) 2 AWG-500 kcmil
6 AWG-400 kcmil
6 AWG-350 kcmil
460V
6 AWG-400 kcmil
6 AWG-350 kcmil
14 AWG-2/0
14 AWG-2/0
575V
6 AWG-400 kcmil
6 AWG-350 kcmil
14 AWG-2/0
14 AWG-2/0
NOTE: 2* = Dual pairs per phase
