Warranty Terms; Technical Parameters Of Solid Fuel Boiler Wbs Active; General Features - Sunsystem BURNIT WBS Active-Serie Montage- Und Bedienungsanleitung

TECHNICAL PASSPORT INSTALLATION and OPERATION MANUAL
The fan is being turned off, whereas CH and WUW pumps
are operating independently from the current temperature,
each in accordance with its specific settings. In case of CH
sensor damage, the alarm will remain active until the sensor
is replaced. If the DHW sensor is damaged, the user should
press MENU which will turn off the alarm and the controller
will return to one pump operation (house heating). In order
for the boiler to operate in all modes the sensor needs to
be replaced.
Temperature protection. After the temperature exceeds
85°C, the alarm is sounded with the display showing the
following message:
The current temperature is read from an electronic sensor
and processed by the thermo controller. When the alarm
temperature is exceeded, the fan is shut off and both pumps
begin to run in order to distribute hot consumption water
throughout the system.
Anti-boil protection. This protective function is used only
with the water heater priority mode. For example, when the
water heater setpoint temperature is 55°C and the boiler
temperature rises to 65°C (so-called priority temperature),
the controller shuts off the fan. If the boiler temperature
reaches 80°C, the C.H. pump will be activated. If the
temperature continues to rise, the alarm will be activated
at 85°C. Such condition may appear when the water heater
or the pump is damaged or when the sensor has been
improperly installed. However, if the temperature drops, the
controller will activate the fan at 63°C and it will remain in
the duty mode maintaining the priority temperature of 65°C.
Fuse. The controller has a network protection WT 3.15 A
tube fuse.
*
ATTENTION: Higher current ratings may cause
damage to the controller.
10.16. Technical specifications of controller ST 81
1 Supply voltage
2 Power consumption
3 Ambient temperature
4 Circulation pump outlet load
5 Fan outlet load
230V/50Hz
V
+/-10%
W
°C 10÷50
A
A
Diagram 11. Elements of WBS Active boiler /see page 75/
1. Control unit
2. Housing
3. High efficiency thermal insulation
4. Safety heat evacuator (exchanger)
5. Three-pas flue gas flow
6. Water mantle
7. Combustion chamber
6 Temperature measurement range
7 Measurement accuracy
8 Temperature adjustment range
9 Sensor thermal resistance
10 Fuse insert
The warranty terms are described in the Service booklet
included in the supply.
12. TECHNICAL PARAMETERS OF SOLID FUEL BOILER WBS

12.1. General features

- Electronic control unit controls the combustion by fan
speed modulating. Optional control of circulation pumps
for central heating and domestic hot water (DHW).
- Air feed fan optimizes the combustion and the fuel
consumption rate.
- Water mantle embraces the combustion chamber in full to
utilize the emitted heat most efficiently.
- Ribbed chamber surface and three-pass flue gas flow for
improved heat exchange.
- Combustion chamber with large heat exchanging surface
and low chamber resistance.
- Large firebox door ensures easy loading even with bigger
logs (length of logs up to 50 cm).
-Exchangeable metallic ash grate protects the pipe grid from
the flame.
-Burner flange on lower door for fitting pellet, oil or gas
burners (optional).
- Safety devices:
1. Pressure relief valve 3 bar
2. Safety heat evacuator a tap-water-filled line passes
through the upmost part of the boiler body. In case of
overheating it is triggered open by a thermostatic valve
(not included) to evacuate the heat of the boiler.
3. STB - emergency thermostat - turn off the fan and stop
the combustion process.
4. Air intake flap for the fan.
5
0.5
0.6
8. Metal ash grate
9. Ash-and-soot-container
10. Burner flange (option)
11. Flue
12. Air feed fan
13. Air intake flap
13
°C
°C
°C
°C
А

11. WARRANTY TERMS

ACTIVE
0÷90
1
EN
45÷80
-25÷100
3.15