Boiler Location; Central Heating System - Dunkirk DCC-150 COMBI Manuel D'installation, D'utilisation Et D'entretien

Note:
Loca l Codes or Regula tions ma y require different clea ra nces. The flue terminal m ust be e xposed to t he e xternal air a nd the
position must allow the free passage of air across it a t all times. In certain weather conditions the terminal may emit a plume of
steam. Avoid positioning the terminal where this may cause a nuisance.
5.

BOILER LOCATION

The boiler is not suitable for external installation.
The boiler must be installed on a flat vertical wall which is capable of supporting the weight of the boiler.
The boiler may be installed in any room or internal spa ce, although particular attention is drawn to the requirements of the current
electrical provisions with respect to the installation of the boiler in a room or internal space containing a bath or shower. Where a
room-sealed boiler is installed in a room containing a bath or shower, it must not be possible for a person using the bath or shower
to touch any electrical switch or boiler control utilizing line voltage electricity.
The boiler may be installed in a closet, provided minimum clearances are held.
6.

CENTRAL HEATING SYSTEM

The boiler is designed for use in a sealed central heating system.
Refer to section 2: "TECHNI CAL DATA" for details of the heating system volume.
The system should be designed to operate with flow temperatures of up to 176° F I 80° C. When designing the system, the pump
head, expansion tank size, mean radiator temperature, etc. must all be taken into account. Refer to the pump performance
table in section 2.6: "AVAILABLE PUMP HEAD FOR CENTR AL HEATING".
The boiler is supplied with the following components.
Pressure relief valve - set to operate at 30.0 psi I 2.1 bar. The boiler internal pressure switch will shut the boiler off at 43.5 pis / 3.0 bar.
WARNING
The discharge pipe must be routed clear of the boiler to a drain, in such a manner that it can be seen, but cannot
cause injury to persons or property.
The pressure relief valve must be manually operated at least once a year.
•
Avoid contact with hot water coming out
Prevent water damage
Pressure gauge - to indicate the system pressure to be maintained.
By-pass - The boiler incorporates an automatic by-pass, However, where all radiators are fitted with thermostatic radiator
valves, an external by-pass must be fitted.
Note:
See Application Guide for other acceptable system schematics.
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240011373, Rev. G [03/31/2017]