Figure 10 - Single-Point Supply Connection - Terminal Block, Non-Fused Disconnect Switch Or Circuit Breaker - York YCAL0019 Installation, Operation And Maintenance Manual

SECTION 4 – INSTALLATION
SINGLE-POINT SUPPLY CONNECTION – TERMINAL BLOCK, NON-FUSED
DISCONNECT SWITCH OR CIRCUIT BREAKER
Power Panel Power Panel Power Panel
Terminal Block, Terminal Block,
NF Disconnect SW NF Disconnect SW
or Circuit Breaker or Circuit Breaker
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 injury or
death, the technician should verify
that NO LETHAL VOLTAGES are
present inside the panel AFTER dis-
connecting power, PRIOR to working
on equipment.
FIGURE 10 - SINGLE-POINT SUPPLY CONNECTION – TERMINAL BLOCK, NON-FUSED DISCONNECT
SWITCH OR CIRCUIT BREAKER (0043 – 0066)
44
1L1 1L2 1L3 1L1 1L2 1L3 1L1 1L2 1L3
See electrical note 9 See electrical note 9
Control Panel Control Panel Control Panel
2 2 2
L L L
MICROPANEL MICROPANEL
CTB2 CTB2 CTB2
13 13 13
CTB1 CTB1
Field Provided 120-1-60 Field Provided 120-1-60
Micropanel Power Supply if Control Micropanel Power Supply if Control
Transformer not Supplied Transformer not Supplied
Field Provided Unit Power Supply Field Provided Unit Power Supply
The unit evaporator heater uses
120VAC. Disconnecting 120VAC pow-
er from the unit, at or below freezing
temperatures, can result in damage to
the evaporator and unit as a result of
the chilled liquid freezing.
FORM 150.67-NM1
ISSUE DATE: 4/28/2017
Flow Switch Flow Switch
14 14 14
LD07719
JOHNSON CONTROLS