Safety And Equipment Protection Systems - York VCH-25A Installation Manual

1 Installation manual
1.10 Instructions for installation and connection of the unit
Thermostat connections to the control board
A. Thermostat connection board.
Board connection terminals
X1 To terminal X1 of the DPC-1 thermostat.
B White. To terminal B of the DPC-1 thermostat.
R Red. To terminal R of the DPC-1 thermostat.
Y1 –
O/B –
Y2 –
Thermostat connections
1. Yellow cable.
2. Red cable.
3. White cable.
Shielded cable, 2 x 0,5 mm
A.
100 m.
Shielded cable, 10 x 0.22 mm
B.
length: 100 m.

1.10.7 Safety and equipment protection systems

The VITALITY range of air conditioning units includes an entire series of safety and protection systems
intended to provide a high degree of safety for users and maintenance personnel.
Those not expressly authorised to use the air conditioning unit must not handle it or perform repair or
maintenance work.
Safety systems
Johnson Controls Inc. manufactures air conditioning units in accordance with EU occupational protection
and user safety regulations, provided that the units are used and maintained in line with the instructions
and indications given in this document.
40
2
. Maximum length:
2
. Maximum
A
1
A
DS1 RS1
3
B
2