Varan 1.14, 1.20
Changes in models reserved.
Dimensions not binding!
12
This safety element constantly measures the pressure inside the
heat exchanger and transmits the information to the controller.
In case the pressure sinks below 0,5 bar or exceeds 2,7 bar, the
boiler stops operation. The limit values are programmed into the
controller.
This component measures the draught in the exhaust channel and
transmits the data to the controller. In case the draught value sinks
below or exceeds the parameter, teh boiler stops operation and
shows an alert message.
NOTE:
The flue draught may change due to cloggings or heavy
pollution of the flue or the boiler, or defective boiler sealings. Also,
bad weather conditions may influence the flue draught.
The controller is connected to an independent thermostat which is
used to limit the boiler temperature.
This safety thermostat interrupts the operation of the fan. The
temperature is limited to 95°C. This safety thermostat is located
below the main switch.
Installation
5 Installation
5.1 General Warnings
Mind regional prescriptions and legal guidelines during installa-
tion, operation and disposal of the boiler. The boiler must be ins-
talled by qualified personnel.
This boiler is designed to run in aquiferous central heating instal-
lations with an operating pressure of max. 2.5 bar an max. water
temperature of 90°C.
The combustion chamber door must remain closed during normal
heating operation.
All electrical components of the boiler need a power supply of 230
V. An improper connection can result in electrical shocks.
Prior to installation, check the boiler for visible damages.
5.2 Safety Devices
Make sure that the following components are always in function:
- safety valve, vent valve,
- electro-mechanic water pressure switch
- vacuum actuator
- boiler thermostat.
Safety valve
vent valve
Water pressure switch
Vacuum actuator
Thermostat
