Commissioning - Glow-worm Swift flow 75e Instructions For Use Installation And Servicing

10.7 Flue Fixing
Fit the self-adhesive gasket, supplied in the loose items pack,
to the flue elbow, see diagram 10.3.
Push the prepared ductings into and through the wall sleeve,
the longest protrusion of the flue terminal is positioned at the
top.
Note: The foam seal is a tight fit in the wall sleeve and the flue
system should not be inserted unless the cement has fully set
or it can be held from the other side.
Fit the flue elbow to the top of the boiler, see diagram 10.3, using
the four screws supplied loose. To assist with the location of the
flue elbow into the fan outlet, loosen the two wing nuts on the
flue collector angle and the two fan securing screws.
Tighten the four screws of the flue elbow evenly to ensure a
good seal at the gasket. Tighten the wing nuts and screws, if
slackened, to secure the flue collector and fan.
Make the wall good internally around the air duct.
Check that the ductings do not slope down towardsthe boiler.
11.1 Filling Domestic Water Circuit
Check that the boiler is isolated from the electrical supply, at the
external isolator.
Fully open the domestic water supply stop cock or valve in the
supply to the boiler.
Open the two domestic water isolation valves, slots in line with
the length of the valve, see diagram 8.1.
Open all hot water draw-off taps and close them when water
flows. Check for water soundness of the whole domestic water
system and boiler.
11.2 Filling the Heating System
It is essential that a bypass is fitted in all installations, 22mm o.d.
minimum. The bypass must have a lockable valves "B" in
diagram 4.2, incorporated in a position so that inadvertent
closure or unauthorised interference is not possible.
The bypass MUST be fitted before any system control. A
radiator bypass is not recommended.
Open the two central heating isolating valves, slots in line with
the length of the valve, see diagram 8.1.
Flush, fill and vent the system refer to Section 4.9 "Filling
Sealed Systems".
WARNING. SEVERAL COMPONENTS OPERATE ON MAINS
VOLTAGE AND WITH THE OUTER CASE REMOVED, LIVE
COMPONENTS BECOME EXPOSED.
To assist in filling and venting, the pump may be operated:
Connect the electrical supply, set switch "C" to "On", any
remote heating systems controls, time switch and/or room
thermostat to call for heat, see diagram 11.1.
Note. If the clock/timer kit is to be fitted, refer to the setting
instructions in the Instructions for Use.
Make sure that the automatic air vent is operating correctly, see
diagram 11.2.
Take care not to splash any of the electrical components.
Alternate the position of switch "C" between "On" and "Off"
positions to ensure that water flows through all parts of the
boiler and air is not trapped in the boiler internal bypass.
Supplied By www.heating spares.co Tel. 0161 620 6677
10 Boiler Fixing
FLUE ELBOW
(REAR FLUE
SHOWN)
SECURING
SCREW (4)
FAN
SECURING
SCREW (2)

11 Commissioning

Pressurise the system until the pressure is 1.5bar (21.5lbf/in2).
Check the heating system and boiler for water soundness.
Check the operation of the safety valve by turning the safety
valve knob in the direction of the arrow.
Lower the pressure to the initial cold fill design pressure, refer
to Section 1.6 "Data". Position the set pointer on the boiler
pressure gauge at this pressure also.
11.3 Preparation for Lighting
Isolate the boiler from the mains electrical supply at the external
isolator.
Test for soundness and purge air from the gas supply. Turn on
the gas service cock, slot in line with the length of the cock.
Loosen the burner pressure test point screw and connect a
suitable pressure gauge, see diagram 11.3.
11.4 Burner Pressure - Hot Water
The burner pressure is factory preset and no adjustment should
be required.
Connect the electrical supply; the pump will operate for about 30
seconds, then the pump will stop.
Fully open the largest hot water draw off tap whereby the main
burner will light, the flames gradually increasing to the maximum.
Check the soundness of the boiler gas joints, with the main
burner on, using a leak detection fluid. Take care not to splash
any of the electrical components.
Fully open the hot water throttle, (clockwise), see diagram 11.5.
Check that the water flow rate is not less than:
10.5 l/min (2.3 g/min), equivalent to 5.7 seconds to fill a 1 litre
container, or 3.3 seconds to fill a 1 pint container.
To achieve this flow rate a water pressure of at least 0.8bar is
required during commissioning, although subsequently the
appliance will work at a minimum pressure of 0.5bar.
This flow rate should prevent any modulation of the gas pressure.
21
GASKET
FLUE
COLLECTOR
WING
NUT
Diagram 10.3
221422A