FROM THE BEGINNING OF THE PARAGRAPH.) The flame should be without a yellow tip and be
approximately 25mm (1 in) long. No adjustment of the pilot flame is necessary as with the restrictor
screw fully open the pilot jet is sized to give the correct flame length at 20 mbar (8 in wg) inlet
pressure.
Operate the burner by turning the thermostat knob to the high setting. CHECK THE OPERATION
OF THE FLAME FAILURE DEVICE by turning the grey ON/OFF button clockwise. The burner and
the pilot should go out.
Turn the boiler thermostat to the OFF position. Wait 3 minutes and relight the pilot.
Operate the burner by turning the thermostat knob to the high setting.
Remove the cover screw and adjust the appliance governor to give the correct pressure
corresponding to the required input. See table opposite. Check this pressure after 10 minutes and
adjust if necessary (
). Replace cover screw.
Turn the boiler thermostat to the OFF position and recheck the pilot flame length.
The system should now be flushed again whilst hot, refilled, vented and checked for water leaks.
Make a final check for gas soundness.
Replace the burner pressure test point screw and then turn the boiler thermostat to the required
setting.
Complete the assembly of the outer case as described in 'Outer Case' (
).
Instruct the user in the use of the unit. Please leave these instructions with the user, along with the
user's instructions and safety card.
NOTE: In the event of an electrical fault after the installation of the appliance, preliminary electrical
system checks must be carried out (i.e. Earth continuity, polarity and resistance to earth).
Model
Maximum
Input
Setting
Pressure
Minimum
Input
Setting
Pressure
80 OF
30.36 kW
15.8mbar
27.11 kW
12.7mbar
(103600 Btu/h) (6.35 in wg)
(92500 Btu/h)
(5.1 in wg)
70 OF
26.4 kW
16.4mbar
23.15 kW
12.2mbar
(90100 Btu/h)
(6.6 in wg)
(79000 Btu/h)
(4.9 in wg)
60 OF
22.91 kW
16.8mbar
19.5727 kW
12.3mbar
(78200 Btu/h)
(6.7 in wg)
(66800 Btu/h)
(4.9 in wg)
50 OF
19.25 kW
17.1mbar
15.91 kW
11.7mbar
(65700 Btu/h)
(6.85 in wg)
(54300 Btu/h)
(4.7 in wg)
40 OF
15.26 kW
16.9mbar
12.07 kW
10.5mbar
(52100 Btu/h)
(6.8 in wg)
(41200 Btu/h)
(4.2 in wg)
Summary of Contents for BOSTON 40 OF
Page 9: ...fig 1 Pump in Casing Page 5 fig 2 Outer Case ...
Page 15: ...Page 8 Fig A One Zone Valve Fully Pumped System ...
Page 16: ...Fig B Sundial Gravity System ...
Page 17: ...Fig C 2 Zones Valve Fully Pumped System ...
Page 20: ...fig 7 Burner Controls fig 8 Boiler Thermostat Page 10 ...
Page 23: ...Fig 9 Insulation Combustion Box Door Fig 10 Baffle Securing Screws ...
Page 24: ...fig 11 Door Burner 60 50 40 fig 12 Door Burner 80 70 ...
Page 29: ...fig 16 Insulation Page 14 Short Parts List ...
Page 30: ......
