HITACHI PSC-6RAD RAC Adapter Control Accessories Instruction Manual

PSC-6RAD RAC Adapter Control Accessories
Instruction Manual

PSC-6RAD RAC Adapter Control Accessories

Read and understand this manual before using this air conditioner. Keep this manual for future reference.

Specifications in this catalogue are subject to change without notice in order that HITACHI may bring the latest innovations to their customers
Whilst every effort is made to ensure that all dimensions and specifications are correct, any printers’ errors not rectified are outside the control of HITACHI, who cannot be held responsible for same
ATTENTION: This product shall not be mixed with general household waste at the end of its life and it shall be retired according to the appropriated local or national regulations in a environmentally correct way. Due to the refrigerant, oil and other components contained in the Air Conditioner, its dismantling must be done by a professional installer according to the applicable regulations. Contact the relevant authorities for more information.

DANGER — Immediate hazard which WILL result in severe injury or death.
WARNING — Hazards or unsafe practices which COULD result in severe personal injuries or death.
CAUTION — Hazards or unsafe practices which COULD result in minor personal injury or product or property damage.

SAFETY SUMMARY

**DANGER::**
DO NOT pour water into the remote control switch (hereafter called “controller”). This product is equipped with electrical parts.
If poured, it will cause a serious electrical shock.

**WARNING:**
DO NOT perform installation work and electrical wiring connection by yourself. Contact your distributor or dealer of HITACHI and ask them for installation work and electrical wiring by service person.
The specified cable should be used to connect room air-conditioner and adapter, and controller and adapter.
If not it may result in an electricl shock or a fire.

**CAUTION:**
– DO NOT install the indoor unit, outdoor unit, controller and cable at such places as;
– Where there is oil vapor and the oil is dispersed
– Where the hot springs are near (in a sulfuric environment)
– Where generation, flowing, staying or leaking of flammable gas is detected
– Where the sea is near (in the salty environment)
– An acid or alkaline environment
– DO NOT install the indoor unit, outdoor unit, controller and cable within approximately 3 meters from strong electro-magnetic wave radiators such as medical equipment. In case that the controller is installed in a place where there is electromagnetic wave direct-radiation, shield the controller and cables by covering with the steel box and running the cable through the metal conduit tube.
– In case that there is electric noise at the power source for the indoor unit, provide a noise filter.

INSTALLATION WORK

2.1. BEFORE INSTALLATION
Check the contents and the number of the accessories in the packing.

2.2. INSTALLATION PROCEDURE

1. RAC adapter can be installed to the wall as well as on the air-conditioner itself.

2. Install RAC adapter in the vertical surface as shown below.

3. Installation procedure
   a) When installing to the wall.
   (i) Fix the adapter with 2 screws. Tapping screw is for metal surface, and other screw is for wooden surface.
   (ii) When using the cover.
   It can be installed at the right and left side of room air-conditioner. Double-face tape fixes the cover and RAC adapter.
   b) When installing on the room air conditioner In case that it cannot be installed to the wall due to the space or material problem, double-face tape is used for installation on the room air-conditioner.
   (i) Confirm if the piping cover of the Unit can be removed when performing the service maintenance, and then fix RAC adapter in the side of room air- conditioner with double-face tape. (Available at the right as well as left side)
   (ii) Clean with a dry cloth the surface to be installed.

NOTE:
Consider the following points since the adhesively changes according to the environmental conditions (temperature, humidity etc).

• The adhesively is decreased in the humidity or oil.
• Warm the adhesive part and installation place of Double-face tape to avoid the decrease of the addressability in case that ambient temperature is low.
• Do not touch the adhesive part by fingers nor re-use it many times.
• Any forced power shall not be added in 24 hours after the installation.

ELECTRICAL WIRING

3.1. SYSTEM COMPOSITION

• Up to 128 units can be connected in case that H-LINK is made up only by RAC adapter.
• In case of combination use with H-LINK devices like package air-conditioner, 16 refrigerant systems and up to 128 indoor units can be used.
• RAC adapter and room air-conditioner shall be connected one by one. Only one RAC adapter cannot control various room air-conditioners.

**CAUTION:**
-Turn OFF the power supply of the room air-conditioner or the central control device when performing the wiring work.- DO NOT run all the H-LINK cable or power supply cable along the other signal cable, or malfunction may occur due to the noise, etc. If it is required to run along the other transmission cable, separate the cable more than 30cm, or run the cable through the metal tube and earth the tube.

• Follow local codes and regulations when performing electrical wiring and earth wiring.
• Transition cable used in H-LINK shall be 2 cores cable (0.75mm2 to 1.25mm2) (Model: VCTF, VCT, CVV, MVVS, CVVS, VVR, VVF) or 2 cores twist pair cable (Model: KPEV, KPEVSpec). Total length of cable shall be below 1000m.
• Do not use wire with more than 3 cores

3.2. INTERNAL COMPONENTS AND WIRING CONNECTIONS
3.2.1. ACCESS
Open the cover by removing the 1 and 2 screws.

3.2.2. WIRING CONNECTION
Connection with room air-conditioner.
(i) Remove the front cover of room air-conditioner and the cover of electrical box.
(ii) The cable attached with the connector of RAC adapter shall be connected with the connector of indoor PCB.
(iii) Install the electrical box cover paying attention not to clamp the cable. See an installation manual of each room air-conditioner for confirming how to connect and how to assemble the cable of RAC adapter.

**CAUTION:
Disconnect the power plug before performing this work.
Turn OFF a breaker power source in case that the power comes from outdoor unit.
Connection of transmission cable**
H-LINK transmission cable connecting to RAC adapter shall be connected to H-LINK.

CAUTION:

• Incorrect wiring may cause a failure of RAC adapter. Especially pay attention not to apply the high voltage like AC400/230V.
• Do not perform the wiring work with power of the central station or RAC adapter being supplied. It may cause the malfunction. Turn OFF devices when performing the wiring work.
• The RAC adapter side cable should not overload to the connector.
• Do not clamp the cable when attaching the RAC adapter cover.
• Band should be in the fixed position.

DIP SWITCH SETTING

1. Dip Switch setting should be performed with the power of room air-conditioner OFF. The setting contents are invalid if it is performed with the power ON.

2. Installation position of Dip Switch is as below. CAUTION:
   Do not turn ON various pins of DSW1 and DSW2.

3. Refrigerant cycle No. is set by RSW1 and DSW1.
   Refrigerant Cycle No. Setting

4. Unit No. is set by RSW2 and DSW2.
   Unit No. Setting

5. Sub Setting
   In case of setting various RAC adapters in the same refrigerant cycle, set the RAC  adapter with smallest Unit No. as a main. In case of only one RAC adapter in a refrigerant system, this adapter should be a main. Set by changing DSW3. Main Setting
   Setting before shipping (Sub setting) **CAUTION:**
   Do not set various main adapters in the same refrigerant cycle.

6. In case of wrongly applying high voltage to H-LINK wiring, fuse installed in a transmission circuit on PCB is cut. In this case, after wiring correctly, turn ON No.2 pin of DSW4 on PCB and then transmission circuit is recovered. (If you make this error again, the transmission circuit is not recovered.)

7. Terminal resistance is set in whole H-LINK.
   (i) If H-LINK connection devices like package air-conditioner is connected besides RAC adapter, set the terminal resistance by package air-conditioner. The terminal resistance should be ON in only one position in whole H-LINK.
   (ii) In case that H-LINK is made up only by RAC adapter, set the terminal resistance by RAC adapter. The terminal resistance should be ON in only one position in whole H-LINK.

TEST RUN

Test run should be performed in the following way after finishing the installation, wiring and setting. See installation manual enclosed with each central control devices for the detail.

1. Connection State Confirmation
   Confirm if RAC adapter connection is recognised in the central control device. In case that it is not confirmed, check the transmission cable, refrigerant cycle No. indoor unit No., terminal resistance setting etc.

2. Registration
   Confirm if RAC adapter connection is recognised.

3. Confirmation of Run/Stop Order
   Confirm if room air-conditioners work correctly by run/stop operation from the central control devices. Check also if air-conditioner state changes correctly by each setting.

P5414170, PMML0141A rev.0 – 02/07 Printed in Spain

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