©
Euroheat
Distributors (H.B.S) Ltd. 2000 Instructions Part number IN10111 Edition C
14
Flue Draught Measurement. cont
The negative pressure created within the combustion chamber of the stove must be measured using a test hole
drilled into the flue, as close to the stove as possible and before any draught stabilizer that may be fitted to the flue.
To ensure a constant air inlet size the readings should be taken with both the grate and the thermostatically controlled
air inlet to the stove shut, and the secondary air-wash inlet fully open.
A reading should be taken before the stove is lit to identify any possible problems which may be caused by air being
drawn down the flue by other heating appliances fitted with a flue, extraction fans, etc.. These should be dealt with
before lighting the stove.
Once lit, the stove and flue should be allowed to warm thoroughly before letting the fire burn at a low setting.
While taking the flue draught reading, all air entries to the combustion chamber of the stove should be closed
except the secondary air-wash shutter, which should be fully open. The draught measurement should read
approximately 0.5mm gg.
The stove should now be made to burn at its maximum output and another draught measurement taken, again
closing all air supplies to the stove other than the secondary air-wash shutter. The draught reading when the burner
is operating at its maximum setting should be approximately 1.5mm. gg.
A flue draught which is too low will result in the stove being difficult to light, responding only slowly to demands
for increased output and unable to reach its full heating output.
Flue draught which is too high will make control of the fire difficult, and makes it possible to over fire the stove,
which can seriously damage it. In this instance a flue draught stabaliser may need to be fitted.
The installation manual should be consulted if the flue draught pressure readings are incorrect.
3. Operation and Lighting
The customer is to be advised about the operation and lighting procedures, use of the tools and general maintenance
of the stove.
4. Warranty
The warranty registration form should be completed and the user advised to return it fully completed to Euroheat
for registration.
5. Instructions
All instructions are to be left with the user.
