Johnson Controls THM-R2A Manuale utente

Installation Manual for Remote Sensor

Model THM-R2A

No. Name Qty.

1 Remote Sensor 1

2 Fixing Screw 2

3 Cord Fixer 3

2. Contents

Check to ensure that the following parts are included in the box.

3. Installation

(1) Selection of Installation Location

The thermistor for detecting room temperature is installed inside the remote sensor.

Installation location should be determined according to the following conditions.

Install the remote sensor where:

* the average room temperature can be detected.

* it is not exposed to the sun.

* there is no heat source around.

* discharge air from the air conditioner does not blow directly against it.

* it is not affected by the outdoor air when opening or closing doors or windows.

(2) Installation

(a) Installing Remote Sensor on Wall

1. Applicable Models

This remote sensor is applicable to indoor units for air conditioners.

Fixing Screw

Sensor Box

1-1/4

(32)

Unit: inch (mm)

2-M4

Dimension for Fixing Remote Sensor on Wall

1-1/4

(32)

- Cut out the wiring holes in the sensor box and lead the wires for the sensor through the holes.

- Secure the sensor box on the wall with the two screws.

- If the sensor box cannot be secured on the wall with the screws, use double-sided tapes.

(b) Concealing Wires inside Wall

- Make the holes for securing the sensor box on the metal plate (ﬁeld-supplied) as shown in the ﬁgure

on the right, and secure the sensor box to the plate with screws.

- Make sure that the hole for air intake on the sensor box remains unobstructed.

Sensor Box Cover

Switch Box

(Field-Supplied)

Unit: inch [mm]

Fixing Screw

Sensor Box Fixing Frame

(Field-Supplied)

Metal Plate

(Field-Supplied)

1-1/4

[32]

(2-3/4 [70])

(4-23/32 [120])

1-1/4

[32]

5/8

[16]

2-M4

4. Wiring Procedures

(1) Connect the cord (26ft (8m)) for the remote sensor to connector “THM4” of the indoor unit PCB.

5. Remarks

(1) When removing the cover of the sensor box, insert the tip of the ﬂat head

screwdriver between the upper recess part of the sensor box and the cover,

and remove it.

(2) Run the sensor cord where the power line or electromagnetic interference

(EMI) will not cause any abnormal operation.

(3) Check to ensure that the wiring is correctly performed. Contact failure may

cause incorrect temperature sensing and an abnormal operation.

(2) Extending Cord

If there is a requirement that the cord be extended, cut the cord in the middle and connect it to the

extension cord (wire size: 0.3mm2(AWG22), ﬁeld-supplied).

When using the extension cord, connect it by soldering and the soldering part should be isolated

electrically so that contact failure may not occur.

The total length of the cord (including the extension cord) should be within 98ft (30m).

Remote Sensor

THM4 (White)

Code No. LIT-12012110

Issued June, 2015

P5415563

Indice

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