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 Key

Designation

Function

Daytime room
temperature

Set the daytime room temperature. 

3

Reduced room
temperature

Set the night time room temperature or reduced heating. 

4

Water heater
temperature

Set the domestic hot water temperature.
Manual water heater reloading. 

5

 

Rotary pushbutton

Change the values by turning. Confirm the values by pres-
sing. Function selection by pressing and turning.

6

Information key

• Show the operating data on the display.
• Return to the basic display without saving the values.

7

Heating curve set-up

Set the heating characteristics 

8

Operating mode
selection key

Select the operating modes

   

 

Holiday

Turn off the heating system during the holidays 

   

 

Absence

Temporarily switch off heating 

   

 

Party

Extended heating 

   

 

Automatic

Automatic heating according to the preset heating times

   

 

Summer

only water heater; heating off 

   

 

Constant

 

heating

Constant heating mode 

   

 

Reduced

 

heating

Constant reduced heating mode 

   

 

Standby

System switched off - frost protection activated 

9

Display

The  basic  display  shows  the  day  of  the  week,  date  and 
time of the day, as well as the room temperature.

Possible readouts:
1  Active heating time 24h
2  Weekday display
3  Display of the active operating mode and the clock pro-

gramme

4  Time of the day
5  Selected operating mode
6  Date / Day / Month / Year
7  Boiler temperature and room temperature

 

6. Heating system control

1

3
4

6

7

5

Summary of Contents for TopGas combi 21/18

Page 1: ...9 07 EN Subject to modifications Hoval Export Hovalwerk AG Austrasse 70 9490 Vaduz Principality of Liechtenstein Phone 423 399 24 00 Fax 423 399 26 18 Hoval United Kingdom Hoval LTD Northgate Newark N...

Page 2: ...purpose 5 3 Customer service 6 4 Functional principle of the heating system 7 8 5 System start up 8 5 1 Checks prior to start up 8 5 2 Switching on the system 8 6 Heating system control 9 6 1 Operatin...

Page 3: ...elephone numbers Heating installer Plumbing installer Electrical installer Chimney inspector Fuel supplier 1 2 Key to symbols used i Instruction Prompts you to carry out an action Result Shows the exp...

Page 4: ...equipment Yes No Condensate pump Yes No Outside temperature sensor Yes No Room temperature sensor Yes No Room air dependent Yes No Room air independent Yes No Number of heating circuits 1 2 3 4 Heatin...

Page 5: ...This does not apply if your system is operated independent of boiler room air Commissioning of a newly installed system may only be carried out by a qualified installer The installation control must...

Page 6: ...ce The reliable and safe functioning of a gas boiler as well as the achievement of an optimal effectiveness and clean combustion are only possible and guaranteed if the system is maintained and cleane...

Page 7: ...pera ture is as required in an optimum and fuelefficient manner Radiators underfloor heating Delivers the heat from the heating water to the room Heating pump Pumps the heating water from the boiler t...

Page 8: ...mmissioning the TopGas the stench trap siphon in the conden sate drain pipe must be filled with water 5 1 Checks prior to start up Check the water level in the heating system The heating system must b...

Page 9: ...of the current operating mode of the boiler is displayed in the two digit display Reset button change values 6 Heating system control 6 1 Operating elements of the boiler control panel basic control...

Page 10: ...d A total of 4 start attempts are permitted before the unit registers a malfunction Operating Mode Heat During the heating operation the target temperature is shown in the two digit display If the ser...

Page 11: ...selection key Select the operating modes Holiday Turn off the heating system during the holidays Absence Temporarily switch off heating Party Extended heating Automatic Automatic heating according to...

Page 12: ...he timer clock of the TopTronic T Check according to the set correctly operating manual for the heater control Check water level and water pressure Top off the heating system and bleed off air 15 Are...

Page 13: ...ons Press the On Off button to turn the appliance off LED is dark the water pressure is displayed The heater flow and return valves must be open The boiler fill and drain faucet is accessible on the u...

Page 14: ...ng wasted You therefore save fuel if you keep windows and doors closed in winter close chimney dampers when the fire is out only operate kitchen and ba throom fans when it is necessary to remove moist...

Page 15: ...ng heating boilers for oil and wood firing burners solar energy production systems collectors and heat pumps for making use of geo thermal heat or heat generated by wind and water Heat distribution sy...

Page 16: ...7243 550 15 www hoval at Hoval Italia S r l Via per Azzano San Paolo 26 28 I 24050 Grassobbio BG Telefono 39 035 52 50 69 Telefax 39 035 52 58 58 www hoval it Germany Switzerland Austria Italy France...

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