HITACHI SPX-WDC2 Dry Contact Kit Instruction Manual

HITACHI SPX-WDC2 Dry Contact Kit

Product Information

Specifications :

• Model: SPX-WDC2
• Product Name: Dry Contact Kit
• Connection Type: Dry Contact Cord

Product Usage Instructions

Installation :

1. Identify the dry contact cord included in the kit.
2. Locate the external device you wish to connect using the dry contact cord.
3. Connect one end of the dry contact cord to the external device’s input.
4. Connect the other end of the dry contact cord to the designated port on the SPX-WDC2 unit.
5. Ensure all connections are secure and properly fitted.

Operation:

1. Power on the SPX-WDC2 unit.
2. Activate the external device that is connected via the dry contact cord.
3. Monitor the functionality of the external device through the SPX-WDC2 unit.
4. Follow any specific instructions provided by the external device’s manufacturer for optimal operation.

FAQ:

• Q: What should I do if the connected external device is not functioning properly?
  A: Check the connections between the external device and the SPX-WDC2 unit. Ensure they are secure and properly inserted. Verify that the external device is powered on and functioning correctly. If issues persist, refer to the troubleshooting section in the user manual or contact customer support.

• Q: Can I use the dry contact kit with multiple external devices?
  A: The SPX-WDC2 unit supports connections with multiple external devices using separate dry contact cords. Each device should be connected to the designated ports on the unit following the installation instructions provided.

Dry Contact Kit Installation & Operation Manual

MODEL SPX-WDC2

INSTALLATION AND OPERATION MANUAL

DRY CONTACT FUNCTION (Optional Part)

How to connect the “Connecting Cord (SPX-WDC2)”.
This product is a connecting cord to connect a Dry Contact Unit cord to the PCB of the room air conditioner indoor unit. Beside this sheet, in order to perform an installation job, please refer to Installation Manual for each air conditioner. Do make sure items listed below are included in the packaging box.

< Included Item>

1. Connecting cord to PCB (SPX-WDC2) (1 pcs)
2. Contact with sleeve (2 pcs)
3. Installation and Operation Manual (1 booklet)

CAUTION : PLEASE STOP THE OPERATION OF AIR CONDITIONER AND OFF THE BREAKER BEFORE PERFORMING AN INSTALLATION JOB.

< Working Instruction>

1. Open the Electrical Cover of indoor unit.
2. Connect the CD[Connecting Cord (SPX-WDC2)] to connector CN9 of indoor main PCB.
3. Join the cord from Dry Contact Cord to CD[Connecting Cord (SPX-WDC2)] by using the @[Contact with sleeve] provided.
4. Set the dip switch SW501 of indoor main PCB to enable the DRY CONTACT function. (refer to Note 1)
5. Be careful not to clamp any wire when assemble back the Electrical Cover.
6. Do an operation check after Dry Contact has been connected.

Note:
Detail setting of dip switch SW501 as mention in portion B Table 1.

Wire for this Connecting Cord have no polarity, any wire joint is acceptable.

CONNECTION DIAGRAM

How to operate the DRY CONTACT function.
DIP SWITCH (SW501) setting which related to DRY CONTACT function.

Table 1

Note :

1. AUTO RESTART function set to “Enable” is needed (set pin#1 on the DIP SWITCH SW501 above to OFF position).
2. DRY CONTACT function is “Enable” by set pin#2 of the DIP SWITCH SW501 to ON position.
3. Select the proper setting for DRY CONTACT LOGIC INPUT pin#3 on SW501.
4. 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.
5. 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.

After all connection has been done as below diagram, turn ON the breaker and push ON button of wireless remote controller or wired remote controller to operate the air conditioner unit. ” When the CARD KEY is in insert condition, the air conditioner operation is allowable by remote controller

• When the dry contact switch on the Card Key Unit is open (refer to diagram below for contact type a), the unit stops to operate it takes 10 seconds to stop the unit operation after the dry contact switch on the card key turns off) and vice versa.
• When the card key is removed from the Card Key Unit, the wireless remote controller can not be used.
• When the card key is removed from the Card Key Unit, the wired remote controller LCD display is activated; however it has no control over the unit.
• The suitable accessory Card-key Connecting Cord (accessory code#: SPX-WDC2) need to be used to connect the Card Key Unit’s dry contact switch to the connector on the control board of the indoor unit. Please contact your Hitachi sales representative to select suitable accessory code# for the concerning indoor model.

Final wiring connection will be as below (reference only)

Connection example.

1. Pin# 3 of DIP SWITCH SW501 set to OFF position for Dry Contact Type a
2. Pin# 3 of DIP SWITCH SW501 set to ON position for Dry Contact Type b

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