Computherm Q5RF Manuale utente

COMPUTHERM

Q5RF (TX)

Multi-zone wireless (radio-frequency)

digital room thermostat

Operating Instructions

You can watch the most important aspects of the usage of this thermostat on our video

presentation at www.computherm.info.

- 2 -

GENERAL DESCRIPTION OF THE THERMOSTAT

The

COMPUTHERM

Q5RF (TX) type switched-mode room

thermostat is suitable to regulate the overwhelming majority of boilers

and air conditioners. It can be used together with the

COMPUTHERM

Q5RF or Q8RF multi-zone thermostats to complement the two

thermostats in the basic package, to increase the number of zones

regulated and to control the

COMPUTHERM

Q1RX wireless (radio-

frequency) thermostat-controlled socket.

(You can find detailed information and recommended usage

of the

COMPUTHERM

Q1RX socket and

COMPUTHERM

Q5RF/

Q8RF thermostats on our website: www.computherm.info)

Because there is a wireless (radio-frequency) connection

between the

COMPUTHERM

Q5RF (TX) thermostat and the

receiver unit of the

COMPUTHERM

Q5RF/Q8RF thermostat and/

or the

COMPUTHERM

Q1RX socket, no cable is required between

the thermostat and the receiver and/or the socket.

Temperature can be measured and set more precisely as compared

to simple, conventional thermostats. In heating mode, in accordance

with the selected switching sensitivity, the thermostat switches

the boiler or any other appliances on and o󰀨 below and above

the adjusted temperature, respectively, and contributes to reduce

- 3 -

energy costs while maintaining comfort. In cooling mode it switches

exactly the opposite way.

To increase the lifetime of the batteries, the thermostat will not

transmit signals continuously. Instead it will repeatedly transmit

the actual signal every 5 minutes. Therefore, the regulation of the

heating or cooling will continue even after a blackout.

Thermostat

Boiler

Receiver

230 V AC, 50 Hz Zone valves 230 V AC, 50 Hz

- 4 -

The portability of the thermostat o󰀨ers the following

advantages:

• no need to lay a cable, which is especially advantageous when

old buildings are being modernized,

• the optimal location of the device can be selected during

operation,

• it is also advantageous when you intend to locate the thermostat

in di󰀨erent rooms in the course of the day (e.g. in the living room

during the day but in the bedroom at night).

The e󰀨ective range of the transmitter incorporated in the thermostat

is approximately 50 m in open terrain. This distance may become

considerably shorter within a building, especially when a metal

structure, reinforced concrete or adobe wall stands in the way of

radio waves.

- 5 -

1. LOCATION OF THE DEVICE

The thermostat of the

COMPUTHERM

Q5RF (TX) type device can

be freely moved in your residence. It is reasonable to locate it in

a room used regularly or for many hours per day so that it is in

the direction of natural ventilation in the room but protected from

drought or extreme heat (e.g. direct sunlight, refrigerator, chimney,

etc). Its optimal location is 0.75 - 1.5 m above oor level. Do not

use in wet, chemically aggressive or dusty environment. It can be

placed on its own stand or can be mounted on a wall.

Temperature

measurement unit

Room temperature

is displayed

Set temperature

is displayed

Sign of the

boiler working

Sign of the air

conditioner

working

The information shown on the liquid crystal

display of the thermostat includes the following:

- 6 -

IMPORTANT WARNING! If the radiator valves in your at are

equipped with a thermostatic head, adjust it to maximum temper-

ature or replace the thermostatic head of the radiator valve with a

manual control knob in the room where the room thermostat is to

be located, otherwise the thermostatic head may disturb the tem-

perature control of the at.

2. PUTTING THE THERMOSTAT INTO

OPERATION

Warning! The device must be installed and connected by

a qualied professional.

To put the thermostat into operation,

detach the rear panel of the thermostat

from the front panel by pressing the lock

on the upper side of the housing of the

thermostat, as shown in the gure.

The battery compartment is in the inner

side of the front panel of the housing.

Insert 2 AA alkaline batteries (LR6 type) in accordance with the

diagram in the battery compartment.

- 7 -

Warning! Good quality alkaline batteries may only be used

for this appliance. Carbon-zinc batteries known as durable or long

life batteries and chargeable accumulators are not suitable for the

operation of this appliance. Icon appearing on the display to

indicate low battery voltage warns reliably that the batteries should

be replaced only when good quality alkaline batteries are used.

After the batteries have been inserted, the display ashes the

measured room temperature. (If this information fails to appear on

the display, press the „RESET” button located on the main panel of

the thermostat.

3. BASIC SETTINGS

After removing the rear panel of the de-

vice, the following factory default set-

tings can be modied by relocating the

jumpers (black plugs) and/or changing

the position of the orange-colored po-

tentiometer located on the main panel.

3.1 Selecting the Displayed Temperature

The temperature(s) to be shown on the display can be selected and set

by the left jumper.

- 8 -

With factory default settings the jumper is located on the central and

uppermost pins, in which case the display shows the currently meas-

ured room temperature value, while the notice “ROOM” appears in the

bottom right corner of the display. In this case, the adjusted tempera-

ture is visible only during the adjustment process, for approximately 6

seconds after the last button has been pushed. By relocating the plug

onto the bottommost and central pins the displayed temperature can

be modied so that the display alternately shows the current room tem-

perature and the adjusted temperature for 3-3 seconds, respectively.

In this mode, the notices “ROOM” and “SET” are alternately shown

under the currently displayed temperature in the bottom right corner of

the display, indicating whether the display shows the room temperature

or the adjusted temperature value.

3.2 Selecting the Switching Sensitivity (Accuracy)

The switching sensitivity of the thermostat can be selected or adjust-

ed by the central jumper which detemines how much the thermostat

switches the connected appliance on / o󰀨 below / above the set tem-

perature.

With factory default settings the jumper is located on the central

and uppermost pins, resulting in a switching sensitivity of ±0.2 °C.

It can be modied to ±0.1 °C by relocating the jumper onto the

- 9 -

bottommost and central pins. A smaller switching sensitivity re-

sults in steadier room temperature and therefore in higher comfort.

The heat loss of the room (building) does not depend on the switching

sensitivity.

If higher comfort is needed, the switching sensitivity should be set so

that it provides a steadier room temperature. On the other hand, please

also take into account that the boiler should not switch on and o󰀨 mul-

tiple times in an hour’s time except at low outside temperatures (e.g.

-10 °C), since the frequent on and o󰀨 switches of the boiler reduce

its e󰀩ciency and hence increases the gas consumption. We recom-

mend using the ±0.1 °C switching sensitivity for heating systems with

high thermal inertia (e.g. underoor heating), and the ±0.2 °C switching

sensitivity (factory default setting) for heating systems with low thermal

inertia (e.g. at panel radiators).

You can read more about switching sensitivity in Chapter 5.

3.3 Switching between the Heating and Cooling Mode

The heating or the cooling mode of the thermostat can be

selected by the right jumper. With factory default settings the

jumper is located on the central and uppermost pins, which

selects the heating mode. By relocating the jumper onto the

- 10 -

bottommost and central pins, the cooling mode can be selected.

The output terminals of the receiver unit NO - COM and the zone

outputs are turned on below the set temperature in heating

mode, and they are turned off above the set temperature in

cooling mode (taking the switching sensitivity into account).

3.4. Calibration of the thermometer of the thermostat

You can calibrate the thermometer of the appliance (to correct

measured temperature). To this end all you have to do is change

the position of the orange-colored potentiometer by a Phillips

screwdriver. When you adjust the potentiometer clockwise then

the displayed temperature will be lower than that measured

initially, and when you adjust it anticlockwise the displayed

temperature will be higher than that. The displayed temperature

can be adjusted within a range of approx. ±4 °C.

Correction of the displayed temperature takes place a few

seconds after the adjustment.

ATTENTION! If the modication of the basic settings was done

after inserting the batteries and the modications did not take ef-

fect, please press the “RESET” button located on the main panel

of the thermostat.

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