General Instructions; Operating Instructions; Thermostat Connections To The Control Board - York VITALITY series User Manual

1 User manual
1.5

Operating instructions

1.4.3 General instructions

C A U T I O N
• Always keep the electrical power supply connected to the unit.
• Only disconnect the unit if it is not to be used for a long period of time.
• When preparing for seasonal use, connect the unit to the electricity supply at least 8 hours before
starting it.
False start the compressors (connect them just long
enough to make a few turns). To do so, use contactors
-KM1- and -KM2-.
Wait for 5 to 7 minutes and repeat the false start.
Wait another 5 to 7 minutes and perform a last false
start.
Then switch the compressors to full working order.
1.5 Operating instructions
A thermostat is used for starting and managing the air conditioning unit and for adjusting the temperature
of the supply air.
Through this thermostat, the operating programme determines when to automatically start the air con‐
ditioning unit. The performance of the different unit components is also determined by the operating
programme.
See the documents on the DPC-1 programmable digital thermostat with communication or the documents
on the thermostat installed with the unit for further details on the start-up and adjustment mechanism.

1.5.1 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.
W. –
O/B –
Y1 –
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