York YCAL Series - Single-Point Supply Connection - Terminal Block, Non-Fused Disconnect Switch or Circuit Breaker (0041 - 0071); Fig. 2 - Single-Point Supply Connection - Terminal Block, Non-Fused; Disconnect Switch or Circuit Breaker (0041 - 0071)

FORM 150.66-NM3
ISSUE DATE: 09/25/2020
37
JOHNSON CONTROLS
SECTION 4 - INSTALLATION
4
FIG. 2 – SINGLE-POINT SUPPLY CONNECTION – TERMINAL BLOCK, NON-FUSED DISCONNECT
SWITCH OR CIRCUIT BREAKER (0041 - 0071)
SINGLE-POINT SUPPLY CONNECTION – TERMINAL BLOCK, NON-FUSED
DISCONNECT SWITCH OR CIRCUIT BREAKER (0041 - 0071)
Electrical Notes and Legend located on page 59.
It is possible that multiple sources
of power can be supplying the unit
power panel. To prevent serious in-
jury or death, the technician should
verify that NO LETHAL VOLTAGES
are present inside the panel AFTER
disconnecting power, PRIOR to work-
ing on equipment.
The unit evaporator heater uses
120 VAC. Disconnecting 120 VAC
power from the unit, at or below freez-
ing temperatures, can result in damage
to the evaporator and unit as a result
of the chilled liquid freezing.
LD07719
Power PanelControl Panel
Terminal Block,
NF Disconnect SW
or Circuit Breaker
1L11L2 1L3
GRD
MICROPANEL
2
L
CTB2
13 14
CTB1
Field Provided Unit Power Supply
Field Provided 120- 1-60
Micropanel Power Supply if Control
Transformer not Supplied
Flow Switch
See electrical note 9
Power PanelControl PanelPower PanelControl Panel
Terminal Block,
NF Disconnect SW
or Circuit Breaker
1L11L2 1L31L11L2 1L3
GRDGRDGRD
MICROPANEL
2
L
CTB2
2
L
CTB2
13 1413 14
CTB1
Field Provided Unit Power Supply
Field Provided 120- 1-60
Micropanel Power Supply if Control
Transformer not Supplied
Flow Switch
See electrical note 9