Janfire
pelletswärme
swedish quality
9 chimney
To assure proper operation of the Combiflame, the chimney and the flue gas connection have to fit
to the requirements of the boiler. If you like to connect the boiler to an existing chimney, ask your
chimney cleaner for permission. The flue gas system has to be conform to EN 18160 and your local
terms.
At all modes of operation the natural draft of the chimney measured at the flue gas connector of
the boiler has to be above 10 Pa. A draft regulator is required. The regulator has to be adjusted to
15 Pa. Natural draft above 18 Pa has to prevented. No part of the flue gas system is allowed to be
more tighten than the flue gas connector of the boiler. Janfire advises a cross-section for the flue
gas system from 180 mm. The flue gas system should be as tight, as short and should have as few
angles as possible.
If you like to run the Combiflame as an additional boiler to an existing heating system, a separate
flue gas system for each boiler is required. Ask you local authorities for permission if you like to
connect the Combiflame and a second boiler to the same chimney.
Any data which are necessary for the design of the flue gas system can be
fount in chapter 4. No part of the flue gas system is allowed to be more tighten
than the flue gas connector of the boiler.
!
A draft regulator is required. This regulator is not part of the purchased parts
package.
9.1
Adjustment of draft
Before setting the Combiflame into operation check the draft. The draft has to be measured in the
flue gas pipe about 0.5 m behind the boiler.
If the boiler and the chimney are cold, 10 Pa to 15 Pa natural draft are required. Start the burner
and let it run on the boilers maximum power level for at least 15 min. Now check the draft again. In
this mode of operation not more than 18 Pa natural draft are allowed. If the draft is higher than 18Pa
adjust the required draft regulator.
10 Connection of thermal safety relief valve / thermal safety
relief switch
The Combiflame is equipped with a weld thermal relief heat exchanger. This heat exchanger
prevents the Combiflame from overheating for example during an electric power failure. It has to
be connected to the domestic cold water supply by a thermal safety relief valve. The thermal safety
relief valve has to open at 95°C. The assembly of the thermal safety relief valve has to be conform
to EN 303-5 clause 4.1.5.11.3. The valve must be placed in the cold water supply. It is not allowed
to have any other valve in front of or behind the safety relief valve.
The following must be considered: