Connecting Multiple Indoor Units To A Single Solenoid Valve Kit; Each Method (General) And Conditions - Sanyo SPW-C0705DZH8 Technical Data Manual

3. Electrical Wiring
(5) Use shielded wires for inter-unit control wiring (c) and ground the shield on both sides, otherwise
misoperation from noise may occur. Connect wiring as shown in Section 3-3."Wiring System Diagrams."
WARNING
When connecting each power wire to the terminal, follow the instructions on "How to connect wiring to the
terminal" and fasten the wire securely with the fixing screw of the terminal plate.

3-4. Connecting Multiple Indoor Units to a Single Solenoid Valve Kit

It is possible to connect multiple indoor units to one solenoid valve kit.
The indoor units can be controlled individually or be operated as a group.
It is possible to adopt multiple units with a common use of the solenoid valve kit per piece of refrigerant.
Categories of connected indoor unit capacities are determined by the solenoid valve kit.
Type of solenoid valve kit
* If the capacity range is exceeded, use two solenoid valves connected in parallel.

Each Method (General) and Conditions

Connecting one indoor unit with
Method
one solenoid valve kit
Connectable number 1 piece
of remote controls
Possible operating Individual control
functions
Possible operating Cool, Dry, Heating, Auto, Fan
modes
Condition –
Method 1 Method 1
Solenoid Solenoid
valve kit valve kit
Indoor unit Indoor unit
Remote Remote
controller controller
Loose wiring may cause the terminal
to overheat or result in unit malfunction.
A fire hazard may also occur.
Therefore, ensure that all wiring is tightly
connected.
160
56
Method 1
Method 2
Solenoid Solenoid
valve kit valve kit
Indoor unit Indoor unit Indoor unit
Remote
controller
Total capacity of indoor units (kW)
5.6 < Total capacity
2.2 Total capacity
Method 2
Group control is possible by
connecting multiple indoor units
to one solenoid valve kit.
1 piece
Group control
* Thermostat On/Off function is
only individual control (when
selecting the body thermostat).
Cool, Dry, Heating, Auto, Fan
Mixed cooling and heating is
impossible.
Method 3
Solenoid
valve kit
Indoor unit Indoor unit
Remote Remote
controller controller
2-27
Design of 3-WAY ECO-i SYSTEM
Shielded wire
Ground Ground
16.0
5.6
Method 3
Indoor units can operate
individually by connecting
multiple indoor units to one
solenoid valve kit.
Over 2 pieces
Individual control available
* Mixed group control available
Cooling, Dry, Heating, Fan
* Auto selection is impossible.
Mixed cooling and heating is
impossible.
Auto selection is impossible.
Method 3
Solenoid
valve kit
Indoor unit Indoor unit Indoor unit
Remote Remote
controller controller
1
2
3
4
5
6
Indoor unit
7
Remote
controller
8