Function Introduction; Function Setting - Westinghouse WHU09DHA21S Service Manual

Instructions for the function setting of access control, fire protection
1. Factory setting
In case of using or canceling the access control / fire protection function, use the wired controller to
modify the parameters of indoor unit.
NOTE: please refer to "Site Setting" section in TC Manual for how to use the wired controller to
modify the parameters of indoor unit.

2. Function introduction

(1) Access control: a kind of control mode to control the machine startup & shutdown based
(2) Fire protection: a kind of control mode to control the machine startup & shutdown based on

3. Function setting

(1) Hardware connection
ON/OFF input or Fire input
Figure 1 electrical wiring diagram
3 pins of the OUT INPUT CN16 socket shown in the electrical wiring diagram of Figure 1 are tacitly
approved to be in short circuit state under the factory state (an external short circuit plug shown as Figure
2), and the OUT INPUT CN16 socket of main control board is shown as Figure 3.
(Illustration: the socket number in circuit is subject to the actual serial number of PCB.)
1) When using the door lock function, the user cuts off the red short wire shown in Figure 2 and
accesses the door lock control switch (supplied by user), and the connecting wire should be
22AWG or above specification. The door lock switch is closed under normal conditions and off
under abnormal conditions.
2) When using the fire protection function, the user cuts off the white short wire shown in Figure 2
and accesses the fire protection control switch (supplied by user), and the connecting wire
should be 22AWG or above specification. The protection control switch is closed under normal
conditions and off under abnormal conditions.
(2) Timing sequence description:
Access control:
1) Control of entrance card disconnection: the air conditioner shall be shut down after the access control
signal is disconnected for 30 seconds. In this state, the indoor unit can't be started. If the user performs
starting operation, the wired controller shall not respond and displays power-off.
on the on & off state of the access control port.
the on & off state of the fire protection port.
CN16
Door input
OUT INPUT
Figure 3 main control board
Figure 1 short wiring
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