Glow-worm COMPACT 100p Instructions For Installation And Operation Manual page 21

achieved, obtain it by turning the small adjusting nut, (clockwise
to increase the pressure). Always adjust the minimum pressure
first.
Reconnect the grey wire and adjust pressures on potentiometers.
If the maximum pressure is unattainable, check that the gas
supply is of adequate size, refer to Section 1.7 "Gas Supply". Put
right as necessary.
Isolate the boiler from the electrical supply then reconnect the
modulator cable and refit the cap.
10.6 Domestic Water Flow Rate
This is factory preset and can not be adjusted.
10.7 Burner Pressure - Heating
The burner pressure is factory preset and no adjustment should
be required.
Check that all remote heating system controls, room thermostats,
integral clock and the like are switched on/programmed and
calling for heat.
Set button "J" to "winter" "F".
The pump will circulate water through the boiler and the main
burner will light.
Check that the burner pressure, with the heating system cold to
prevent any modulation of the gas pressure, is within +/-0.2mbar
(+/-0.08in wg) of 4.5mbar (1.8in wg), the central heating pressure.
If the burner pressure is incorrect, it may be adjusted to the
correct setting by turning the central heating gas pressure
adjuster (potentiometer), located on the control board to gain
access remove the two screws securing the controls facia.
Hinge the control facia open.
Remove the plastic plugs. Using the burner adjusting tool
supplied (clockwise to increase), see diagram 10.2. Turn the
adjuster slowly, always making adjustment by reducing below
the required pressure then increasing up to the required setting.
Isolate the boiler from the electrical supply.
Remove the pressure gauge and tighten the test point screw.
Test for gas soundness around the burner pressure test point
with the main burner alight, using leak detection fluid. Take care
not to splash any of electrical components.
Replace plastic plugs and refit the control fascia.
10.8 Temperature Settings
The domestic hot water outlet and central heating flow
temperatures are factory preset and sealed, therefore cannot be
adjusted.
The nominal temperature setting for the domestic hot water
outlet is 65 o C (149 o F) at a flow rate of 3.6Litre/min (0.8gall/min).
The nominal maximum flow temperature setting for central
o o
heating is 82 C (180 F).
10.9 Heating System - Commissioning
Check that all remote controls and integral clock are calling for
heat.
Fully open all radiator valves.
Set the heating system in operation and balance the radiators.
Refer to Section 4.6 and diagram 4.1.
Allow the system to reach maximum temperature then switch off,
isolate the boiler from the electrical supply and drain the system
rapidly whilst still hot.
10 Commissioning
CABLE ENTRY
COVER
CONTROL
BOARD
COVER
SECURING
SCREW (4)
SECURING
SCREW (2)
Remove the inner case front.
Fill and vent the system as described in Section 10.2 "Filling the
Central Heating Circuit". Add inhibitor, if applicable, refer to
Section 4.9 "Corrosion Inhibitor".
21
CLOCK-TIMER
COVER
PLASTIC
PLUG (2)
DOMESTIC HOT WATER
BURNER PRESSURE
HEATING
BURNER PRESSURE
CONTROL
POTENTIOMETER
BOARD
COVER
BURNER PRESSURE
ADJUSTING TOOL
SECURING SCREW (2)
POTENTIOMETER
Diagram 10.2
SIDE PANEL
Diagram 10.3
221680G