Trane THS-02 Bedienungsanleitung

THS-02

Thermostat for heat pump- 2 com-

pressors with auxiliary heating

User’s guide

A70 UG 007 GB

2A70 UG 007 E - 0299

A70 UG 007 E - 0299

Index

Operating instructions 4

General information 4

User commands 4

Power cuts 5

Temperature precision 5

Installation instructions 6

Position 6

Removing the thermostat from its base 6

Setting the micro-switches 7

Replacing thermostat on its base 7

Specifications 9

Operating instructions

4A70 UG 007 E - 0299

Your new THS thermostat has been

designed to provide precise control and

display of the ambient temperature. It

also displays all the other information

you need concerning your system.

The symbols on the keys and the infor-

mation display format make it a prod-

uct that is easy to understand and use.

It is a good idea to set aside some time

to read these instructions and famil-

iarise yourself with the different func-

tions to get the maximum benefit from

this electronic control system.

General information

The thermostat normally displays the

ambient temperature, the operating

mode and indicates whether the unit is

cooling or heating. The six keys on the

front panel give you total control of the

equipment.

You can select different heating and

cooling set points for the system, e.g.

21°C for heating and 24°C for cooling.

To increase or decrease the heating and

cooling set points, you only have to

press one key. In addition you can

choose display in °F or °C.

You can also select continuous fan

operation (useful for an air purifier) or

fan operation linked to operation of the

air-conditioning system.

User commands

MODE: ❉

Select the operating mode you want by

pressing the MODE key several times.

❉- controls the system in cooling

mode only.

(the word "COOL" is displayed

for 5 seconds).

- controls the system in heating

mode only (the word "HEAT" is

displayed for 5 seconds).

❉- controls the system in both

heating and cooling modes

(the word "AUTO" is displayed

for 5 seconds.

()

- forced heating (the word “EHt“

is displayed for 5 seconds).

OFF - stops the thermostat and the

system

COOLING: ❉

Select the temperature the system

must maintain in cooling mode by

pressing the and keys. The set

point value is displayed for 5 seconds

with .

HEATING:

Select the temperature the system

must maintain in heating mode by

pressing the and keys. The set

point value is displayed for 5 seconds

with .

FAN:

The fan starts automatically when the

system is operating, but this is not indi-

cated on the display unit. To select con-

tinuous operation of the fan press the

key and the screen displays

OFF:

When the word “OFF“ is displayed, the

system does not operate.

Avoid using the OFF mode during peri-

ods of extreme cold, to prevent the risk

of frosting.

AUTO: ❉

In this mode the system operates in

heating and cooling mode. The thermo-

stat changes automatically from one to

the other according to the chosen set

points.

N.B.: The thermostat always leaves

a difference of 1°C between the

heating and cooling set points.

▲

▼

▲

▼

A70 UG 007 E - 0299

KEY /(Outdoor temp. option):

When the outdoor temperature

option is connected to your thermo-

stat, you can display this value by

pressing the /key. If this

option is not connected, the thermo-

stat displays “- -“

KEY / (Day/Night):

When the thermostat is initialised,

the symbol corresponding to the

day-time temperature is displayed.

By pressing the / key or pow-

ering up the CLK1 and CLK2 termi-

nals at the back of the thermostat

(customer connection), you can

select a relief or night-time tempera-

ture . (The thermostat memorises

this temperature).

To alternate between the two tem-

perature settings simply press the

/ key.

CLOCK TERMINALS (option):

CLK1 - CLK2

If you connect a clock to these termi-

nals, the thermostat can alternate

automatically between the day/night

set point values.

REMOTE SENSOR TERMINALS

(option):

RS1-RS2-RS+V

The THS thermostat is designed to

accept an electronic remote sensor

that will enable you to place the ther-

mostat in an unobtrusive position.

°C/°F

Press the and keys simulta-

neously to change the °C /°F display.

Power cuts

One of this thermostat’s special fea-

tures is that it does not need a bat-

tery to conserve the selected set

points if a power cut occurs. Its

memory is not affected by power

cuts, no matter how long they last.

When the current returns, the ther-

mostat will continue to operate as if

the power had never been discon-

nected.

Temperature precision

The thermostat will measure the

temperature exactly once it has been

installed and powered up for at least

one hour.

6A70 UG 007 E - 0299

Installation instructions

Position

To operate correctly, the thermostat

must be positioned on an indoor par-

tition wall in a part of the building that

is regularly occupied. In addition, it

must be placed at least 50 cm from

any external wall, at a height of

roughly 1.5 m, in a place where the

temperature represents an average

for the building and where the air cir-

culation is unobstructed.

Avoid the following locations:

- Behind doors or in corners where air

does not circulate freely.

- Places where direct lighting or radia-

tor heating installations may affect

the control system.

- On an external wall.

- Next to or facing air-conditioning

discharge grilles, stair wells or exter-

nal doors.

- Places where the presence of water

or steam piping, hot air ducts or an

unoccupied room behind the ther-

mostat may affect its operation

- Near to a unit’s air discharge grille.

- Near to sources of electrical interfer-

ence, such as contact relays.

Removing the thermostat

from its base

1) Place a flat screwdriver blade in

the the slot in the middle of the

unit’s bottom edge. Pull up the

blade gently until the lid comes off

the base.

2) Pull the bottom part of the thermo-

stat towards you and rotate it.

3) Lift up the thermostat to remove it

from the base

4) Connect the system’s wires to the

thermostat, referring to the dia-

gram below. The wiring can then

be inserted in the wall cavity or a

junction box. The access hole

must be made water-tight to pre-

vent air currents inside the wall

affecting the thermostat’s mea-

surements.

5) You need terminal (C) of the 24V

transformer common.

➞

123

A70 UG 007 E - 0299

Setting the micro-switches

* Heat pump:

Additional: the compressor system

ceases to operate when the auxiliary

heating is operating.

Normal: the compressor system

and the auxiliary heating can oper-

ate simultneously.

** Auxiliary heating :

Comfort: the auxiliary heating can

be activated as soon as the room

temperature is 2°C below the set

point.

Economic: auxiliary heating ceas-

es to operate if the room tempera-

ture is within 0.5°C of the set point.

Forced heating is never autho-

rised.

Replacing thermostat on its

base

1) Position the thermostat on the

hinge lugs located on top of the

base.

2) Slowly lower the thermostat while

rotating it and press down on the

bottom edge until it clicks into

place.

12345678

Normal heat pump

Not used

4 min. minimum aux. heat. operat.

Keyboard in operation

Economic auxiliary heating

1 stage

LED 1 free without icon

LED 2 free without icon

Additional heat pump

Not used

2 min. minimum aux. heat. operat.

Keyboard blocked

Auxil. comfort heating**

Multi-stage

LED 1 + filter icon

LED 2 + fault icon

➞

8A70 UG 007 E - 0299

THS 02

24 V

LED1

LED2

RS+V

RS1

RS2

CLK2

CLK1

a Compressor 2

b Auxiliary heating

c Compressor 1

d Fan

e Common

f Independent power supply

g Mains power supply

h 24 V transformer

Note 1

Note 2 e

24V(C) g

❴

A70 UG 007 E - 0299

Output terminal functions

W1 Make-up or forced auxiliary

heating

Y1 Compressor 1 in cooling or

heating

Y2 Compressor 2 in cooling or

heating

G Fan starting

O Reversing valve supplied

with cooling

B Reversing valve supplied

with heating

R Independent power supply

24 V System 24 V power supply

24 V (C) 24 V common

LED 1 Free LED for status

LED 2 or to indicate function

CLK1 Used with remote clock

CLK2 for alternating set points

RS2 Used to connect the out-

door temp.sensor option

RS1 and/or remote ambient

temp. sensor option

RS+V Refer to instructions sup-

plied with the sensors.

Note 1: The R terminal can be used for

a second independent power supply.

If there is just one power supply,

bridging is provided between 24V

and R.

Note 2: This thermostat can operate

using 24VD C. The negative pole must

be connected to the 24V terminal (C).

Specifications

Nominal voltage 20-30 VAC, or

24 VDC nomi-

nal

Current amps (AC) 0.05 to 0.5 A

direct per out-

put with max.

peaks at 1A

Current amps (DC) 0 to 0.5 A

direct per out-

put with max.

peaks at 1A

Control range Heating: 5 to

30°C in 1°C

stages

Cooling:16 to

40°C in 1°C

steps

Ambient temperature

measurement range 0 to 48°C

Outdoor temperature

measurement range -48°C to 48°C

Precision ±0.5°C at 20°C

Minimum dead band 1°C between

heating and

cooling

modes.

Note : This thermostat contains elec-

tronic circuits which replace tradi-

tional mechanical contacts.

10 A70 UG 007 E - 0299

Notes

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