Daikin R407C PLUS, Service Manual

Page: 131 / 267

Test Operation Si33-105
120 Test Operation R407C PLUS Series Heat Recovery System
1.7 Demand Control
By connecting the external contact input to the demand input of the outdoor unit external control
adaptor (option), the compressor operating conditions can be controlled for reduced power
consumption.
!
Demand 1 Approximately 70% level
!
Demand 2 Approximately 40% level
!
Demand 3 Forced thermostat OFF
Instructions for
Demand Control
Operation 1. Outdoor unit field setting
&
Setting mode 1: Set low noise operation to “ON.”
&
Setting mode 2: Match low noise operation and demand control address with address of
outdoor unit external control adaptor.
2. Outdoor unit external control adaptor setting
&
Function switch (SS1)
Set to “BOTH” or “DE.”
&
Address setting switches (DS1, DS2)
Match with outdoor unit low noise operation and demand control address.
3. Select one from demand input terminals 1 through 3 on the outdoor unit external
control adaptor, and short the corresponding terminals.
!
Demand 1 Short 1-C.
!
Demand 2 Short 2-C.
!
Demand 3 Short 3-C.
Demand Control
System Example