GW20852 - Thermostat Gewiss - Free user manual and instructions

USER MANUAL GW20852 Gewiss

• Congratulations for having choosing a Gewiss product. Gewiss products are constructed with careful attention to detail, using only high quality materials. Gewiss products assure you of peak performance over time.

• Carefully read the following instructions since they contain important information on installing and operating the product. The installer should give these instructions to the final user and ask him to read the contents.

• System programming products must be installed in conformity with the provisions of HD 384 - IEC364 regulations for devices for household or similar use in non-dusty rooms or where special protection against water penetration is not required.

• In case of failure and/or malfunction, contact an authorized technician or GEWISS SAT technical assistance service.

• Luminous signals: Led indicating load on/off

• Remote control input for night-time lowering of heating (winter ). (Night-time lowering is not possible for summer conditioning ).

• Night time reduction temperature (referring to set): – 4°C

• Type of disconnection and appliance: 1 B / Electronic

• Type of relay output: with exchange contact

NO/COM/NC 8(2)A / 250 V~

• User connections (load): 2 or 3 wires

• Max. wire section at the terminals: 2.5 mm

• Type of insulation: Class II e

• Grade of protection: IP 30

• Regulation range: from +5°C to +30°C

• Thermal gradient: max 1K/15 min.

• Differential operation: ∆t = 0.7°C

• Precision of reading: ± 1°C

• Temperature operating limits: 0°C to +50°C

L O C AT I O N A D V I C E Recommendations for positioning: Install the thermostat at a height of approx. 1.50÷1.70 m from floor level, away from heat sources, draughts, doors and windows.

D D Heating systems with thermostat controlling: A Wall mounted boiler B Burner C Circulation pump D Zone solenoid valve N.B.: The examples given in the following documentation are for illustrative purposes only.

H14 INSTALLATION INSTRUCTIONS E L E C T R I C A L C O N N E C T I O N S With the mains power supply disconnected: Connect the power supply cables to terminals N° 4 (Line) and N° 5 (Neutral). Connect the wires of the device to be controlled to terminals: n° 1 = common n° 2 = norm. open n° 3 = norm. closed With strong inductive loads (pumps and solenoid valves) it is recommended that an RC filter is connected in parallel to the load. Remote selection of “Comfort” or “Reduced” temperature Whenever it is desired to utilise the remote selection of “Comfort” or “Reduced” tem- perature, connect the external contact to terminals N° 6 and N° 7 of the thermostat. Important: The installation and electrical connecting of the devices and appliances must be undertaken by qualified personnel and in accordance with standards and regulations in force at the time. The manufacture declines to accept any responsibility concerning the use of the products in accordance with particular environmental or installation regulations, as this responsibility rests entirely with the installer.

Warning: Prior to installing the product, ensure the mains electrical supply is

disconnected. Contact Open Comfort 22:00h 06.00h Open Closed Reduced Comfort Ambient temperature “Comfort” temperature = external contact open “Reduced” temperature = external contact closed Selection of “Reduced” temperature results in a 4°C reduction with respect to the set temperature.Multiple installations In multiple installations (offices, schools, homes, etc.) where the night time reduction is controlled from a single centralised timer, in addition to the above it is necessary to pay close attention to the following instructions:

1) Power supply 230V~

Terminal 4: connect to mains Line (230V~) Terminal 5: connect to mains Neutral (return) N.B.: normally with civil mains power supplies “brown” is the recognised colour for phase and “blue” for neutral (line return).

2) Connections for night time

reduction All terminals 6: connect in parallel with output 2 of the timer. All terminals 7: connect in parallel with output 1 of the timer. 230 V~

Timer switch with contact NO, common to all the thermostats Power supply 230 V~ 230 V~

E L E C T R I C A L C O N N E C T I O N S Example of connections to a boiler and timer to control night time reduction

NO/COMM/NF 8(2)A / 250 V~