Intergas Heating Ltd 10
3 GENERAL BOILER INFORMATION
3.1 General
The Intergas Combi Compact HRE wall mounted, gas fired boiler is a closed appliance.
The appliance is designed to transfer heat to the water circuit in a CH system and the
DHW installation.
The air supply and combustion gas flue connection is as standard prepared for a
concentric 60/100 horizontal flue system. The appliance can be connected to a wall
mounting jig and expansion vessel. The appliance can also be connected without the
wall mounting jig using the robo kit.
The Intergas Combi Compact HRE wall mounted gas fired boiler carries the CE rating
and IP44 electrical protection.
The HRE 36/30 and HRE 36/40 are suitable for supplying at least 13 litres of water per
minute at 35°C temperature arise. The HRE 28/24 is suitable for supplying at least 10.5
litres of water per minute and the HRE 24/18 is suitable for supplying at least 8.5 litres
of water per minute.
It is possible to use the appliance solely for hot water or solely for heating. The unused
system does not have to be connected. The parameters have to be set accordingly.
The appliance is supplied as standard for natural gas (G20). For usage of propane gas
(G31) the boiler can be modifed by changing the gas injector. A gas conversion kit can
be ordered at Intergas Heating Ltd.
Note
Modification of the boiler can only be done by a qualified competent person.
3.2 Boiler controller
An electronic control unit, consisting of a boiler controller and separate ignition module
which is placed on the gas valve, provides direct burner ignition and flame supervision
along with continuous modulation of the burner’s gas supply.
3.3 Parameter list
All boiler adjustments are accessible through the parameter list in the software.
3.4 Heat transfer
Heat transfer to the boiler’s heating and DHW circuit is obtained via a primary, gas to
water heat exchanger within a hermetically sealed combustion chamber. A modulated
speed fan blows the gas/air mixture into the combustion chamber and expels the
products of combustion to outside air via an associated flue system.
3.5 Central heating system
An integral pump located in the boilers hydraulic circuit circulates water through the
heat exchanger to the central heating circuit. During DHW demand the pump stops
functioning, so all the heat is directly transferred to the integrated DHW circuit and no
transfer losses occur. In the event of reduced or interrupted water circulation in the
central heating circuit, an automatic system by-pass should be fitted as far away from
the boiler as possible.
Note
It is no longer permissible to utilize a non-thermostatic controlled radiator as a by-pass.
3.6 Room temperature control
Room temperature can be controlled by the use of an external room thermostat and
thermostatic radiator valves.
Note
Connection of the room thermostat is dependant on the operating voltage of the
thermostat.
3.7 Integrated clock
The boiler incorporates an integrated clock, which allows the setting of central heating
periods (See the User Instructions, ‘Operation and display read-out’ for details) and the
boiler’s control panel incorporates an LED display, which indicates the state of
operation and fault defect codes.