Hitachi RAC-25WSA RAC25WSA User Manual
Product codes
RAC25WSA
1-23
1.3.3
DRY CONTACT APPLICATION (USING DIP SWITCH)
The dry contact system enables the operation of the air conditioner indoor unit to be controlled by using external dry contacts
(with non voltage) such as card-key controller or window for facilities such as hotels.
(with non voltage) such as card-key controller or window for facilities such as hotels.
Table 1 (Applicable models and related information)
Optional Connecting cord Accessory SPX-WDC#
Model
DIP SW Label
CN#
SPX-WDC1 RAK-18/25/35PSPA
DSW1
CN6
RAK-25/35/50PXA
DSW1
CN6
RAK-18/25/35PPA
DSW1
CN6
RAK-50/60/70PPA
SW501
CN6
RAK-18/25/35/50PEA
DSW1
CN6
RAK-18/25/35/50QXA
DSW1
CN6
RAK-18/25/35/50QPA
SW501
CN6
RAF-25/35/50PXA
DIP-SW
CN6
RAF-25/35/50QXA
DIP-SW
CN6
RAF-25/35/50RPA
DSW1
CN6
SPX-WDC2 RAD-25/35/50RPA
SW501
CN9
RAD-50/60/70PPA
SW501
CN9
RAI-25/35/50RPA
SW501
CN9
Note:
1) DRY CONTACT function is "Enable" by set pin No. 2 of the DIP SWITCH (refer to table 1 for the label) to ON position.
2) Select the proper setting for DRY CONTACT LOGIC INPUT pin No. 3 on DIP SWITCH (refer to Table 1 for the label)
i) Set to OFF position (Hi Input) if the type of Dry Contact switch to be used (for the CARD KEY UNIT or Window) is of
contact type a (Normally Open Type) as shown in below diagram.
ii) Set to ON position (Lo Input) if the type of Dry contact switch to be used (for the CARD KEY UNIT or Window) is of contact
type b (Normally Close Type) as shown in below diagram.
ON
↕
OFF
Pin No.
Function
Switch Position / Setting
2
DRY CONTACT function OFF
Disable
ON
Enable
3
DRY CONTACT Input Logic OFF HI Input Active ON LO Input Active
DIP SW Label
Main PWB side
(CN# terminal)
(CN# terminal)
Dry Contact side
(no polarity)
Connecting cord
SPX-WDC#