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4. Electrical work
4.2 Connecting the main remote controller
4.2.1 Connect the main remote controller cable to FTC (Master)
Connect the main remote controller cable to 1 and 2 on the terminal block (TBI. 2)
on the FTC (Master) controller.
Wiring wire No. × size (mm²): 2 × 0.3 (non polar)
The 10 m wire is attached as an accessory. Max. 500 m
Wiring size must comply with the applicable local and national codes.
Circuit rating: 12V DC
Circuit rating is NOT always against the ground.
Location to place the main remote controller
When using the Remote controller options (refer to section 4.3), place the main
remote controller on appropriate location that meets the following points to detect
room temperature.
• Do not place the main remote controller in the periphery of a door or a window.
• Do not place the main remote controller near heat or cold sources, such as a ra-
diator or the like.
Notes:
Wiring for main remote controller cable shall be (5 cm or more) apart from
power source wiring so that it is not influenced by electric noise from power
source wiring. (Do not insert main remote controller cable and power source
wiring in the same conduit.) (Refer to Fig. 4.1.1)
When wiring to TBI.2, use the ring type terminals and insulate them from the
cables of adjoining terminals.
4.2.2 Installing the main remote controller
1. The main remote controller can be installed either in the switch box or directly on
the wall. Perform the installation properly according to the method.
(1) Secure clearances shown in regardless of whether installing
the main remote controller either directly on the wall or in the switch box.
(2) Prepare the following items in the field.
Double switch box
Thin metal conduit
Locknut and bushing
Cable cover
Wall plug
2. Drill an installation hole in the wall.
■ Installation using a switch box
• Drill a hole in the wall for the switch box, and install the switch box in the hole.
• Fit the conduit tube into the switch box.
■ Direct wall installation
• Drill a cable access hole and thread the main remote controller cable through it.
Caution:
To prevent entry of dew, water, and insects, seal the gap between the cable
and the hole through which the cable is threaded with putty. Otherwise, elec-
tric shock, fire, or failure may result.
3. Have the main remote controller ready.
Remove the bottom case from the main remote controller.
4. Connect the main remote controller cable to the terminal block on the bottom case.
Modify the main remote controller cable as shown in , and thread
the cable from behind the bottom case.
Completely thread the cable to the front so that the unsheathed part of the cable
cannot be seen behind the bottom case.
Connect the main remote controller cable to the terminal block on the bottom
case.
■ Direct wall installation
• Seal the gap between the cable and the hole through which the cable is
threaded.
Caution
To prevent electric shock or failure, keep the sheath ends or any other
foreign objects out of the terminal block.
Do not use ring terminals to connect the wires to the terminal block on the
bottom case. The terminals will come in contact with the control board and
the front cover, which will result in failure.
Thread the sheath part
of the cable to the front.
Sheath
10mm
Front
Back
6mm
Thread the cable.
14
Main remote
controller profile
Installation pitch
Connect the cabe.
(non-polarized)
Connect the cable so that the
2-core wire must not
cable sheath is not pinched.
be seen on the back.
30
30
46
Wall
Conduit tube
Locknut
Switch box
Bushing
Seal the gap with putty.
Main controller cable
Front cover and top case
Route the cable from behind
the remote controller.
TBI.2 RC
Required clearances
surrounding the main
remote controller
Bottom case
Remote controller cable
Seal the gap with putty.
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