– 30 –
Hydro Unit
Installation Manual
EN
Remote controller installation
NOTE
• Wiring for the remote controller should not be bundled
or installed in the same conduit with a power cable.;
otherwise, malfunction may result.
• Install the remote controller away from sources of
electrical interference and electromagnetic fields.
1. Insert a flat-blade screwdriver into the groove on
the back side of the remote controller to remove
the rear case.
2. Use the wood screws (2 pieces) supplied with
the remote controller to attach the rear case of
the remote controller to the wall.
Do not use an electrical screwdriver. Do not
over-tighten the screw
(Tightening torque is up to 2 kg / f•cm.);
otherwise, the rear case may be damaged.
3. Connect the electrical wire from the hydro unit to
the terminal block of remote controller.
(Refer to “
Wire the remote controller”.)
Check the terminal number of electrical wire
from the hydro unit to avoid miswiring.
(If AC 220-230 V is applied, the remote
controller and hydro unit will break down.)
Wire the remote controller
Wiring diagram
Terminal block (TB07) for the remote control wiring on
the hydro unit
Second remote controller installation
requirements
Installation
For a dual remote controller system, install the remote
controllers in the following way.
1. Set one of remote controllers as the header
remote controller. (Remote controller of hydro
unit is preset as Header.)
2. Set from “Header / Second” in “Initial setting” on
the setting screen.
• To control room temperature instead of water
temperature with this remote controller, set function
code “40” of hydro unit to “1”.
Basic wiring diagram
NOTE
Terminals of A and B have no polarity.
To diverge from the hydro unit
Rear case
Remote controller
Wood screw x 2
<Back side of the remote controller>
Wall
A
B
A
B
Remote control wiring (procured locally)
Terminal block for the
remote control wiring
Remote
controller
* Terminals of A and B
have no polarity.
* Use wire of 0.5 mm
2
to 2.0 mm
2
.
* A crimp-style terminal cannot be used.
A B
A B
A B
Remote control
wiring (Locally
procured)
0.5 mm
2
to 2.0 mm
2
.
Remote controller
(Header)
Remote controller
(Second)
(Sold
separately)
Terminal block (TB07)
for the remote control
wiring
Earth
hydro unit
30-EN
Summary of Contents for HWS-1405XWHM3-E
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