Supplied By www.heating spares.co Tel. 0161 620 6677
If the gas control valve is changed, then when the
appliance is running, the flue gas CO
2
should be
measured, refer to section 6.1, and compared to the
values stated section 2.3. If the measured value does
not correspond to the Performance Data, then contact:
Halstead Boilers Ltd. Service Help line: 08450 710780.
Always seal the gas valve adjustment screw with paint
after adjustment
9.4
FAN
Refer to Figures 36 & 37
a)
Ensure supply voltage is isolated, and that the gas supply is
isolated.
b)
Remove the gas control valve, fan & burner assembly; refer to
section 6.2.
c)
Remove the gas control valve; refer to section 9.3.
d)
Unscrew the three screws holding the gas valve mounting
plate, remove plate; refer to Figure 36.
e)
Unscrew the four screws holding the fan to the burner
manifold, and remove fan; refer to Figure 39.
f)
Attach and secure the replacement fan, replace the gasket.
g)
Re-assemble in reverse order; ensure that all joints and seals
are correctly re-fitted.
37
9.5
BURNER
Refer to Figures 34, 38 & 39
a)
Ensure supply voltage is isolated, and that the gas supply is
isolated.
b)
Remove the gas control valve, fan & burner assembly; refer to
section 6.2.
c)
Unscrew the three Torx screws, (T-25), holding the manifold to the
combustion chamber door, and remove the manifold; refer to Figure
34.
d)
Remove the gasket, and withdraw the burner; refer to Figure 37.
e)
Fit replacement burner, taking care not to damage the insulation,
and ensure burner is correctly located by lining up the locating tab.
f)
Fit new gasket; refer to Figure 40.
g)
Re-assemble in reverse order; ensure that all joints and seals are
correctly re-fitted.
38
39
4 SCREWS
LOCATING TAB
GASKET
33
751094 ACE HE INST MANUAL:751094 ACE HE 28/9/10 09:46 Page 35
