5
4000123923-2
Draining and Filling
Appliance Introduction
Diagram 1
BOILER DRAIN
VALVE
9744
The 30ci and 35ci boilers are wall mounted modulating boilers
with electronic ignition providing central heating and hot
water.
The 30si boiler is wall mounted modulating boilers with
electronic ignition providing central heating only.
The boiler is of the II
2H3+
category for use with Natural Gas
(G20) as distributed in the United Kingdom, or Butane (G30),
Propane (G31) with the appropriate conversion kit.
The boiler has a fan assisted balanced flue which both
discharges the products of combustion to and draws the
combustion air from the outside of the room.
The central heating and domestic hot water (30ci Only)
temperatures are user adjustable.
Domestic hot water demand (30ci Only) always has priority
over heating demand.
The boiler is designed for use as part of a sealed water central
heating system with fully pumped circulation. The pump,
expansion vessel and associated safety devices are all fitted
within the boiler.
The boiler can be installed against either an external wall or on
➜
(a)
(b)
(c)
Caution: The boiler is installed as part of a sealed system
which must only be drained and filled by a competent person.
If the mains electricity and gas are to be turned off for any long
periods during severe weather, it is recommended that the
whole system, including the boiler, refer to diagram 1, should
be drained to avoid the risk of freezing. Make sure that, if
fitted, the immersion heater in the cylinder is switched off.
If in doubt, consult your servicing company.
30ci Only
• If the boiler loses water: the pressure will be indicated (a)
and the boiler ON indicator (b) will flash red indicating a fault.
Fill the system by the filling device (c) at the bottom of the
boiler until the pressure gauge reads 1.0 bar. A mains
pressure of 2.0 bar is required to reach a fill pressure of 1.0
bar.
Reset boiler: refer to diagram 2, turn the On/Off switch to (0),
wait for five seconds. Turn the On/Off switch to ( I ) to reset
the appliance.
30si Only
• If the boiler loses water: the pressure will be indicated (a)
and the running lamp (b) will flash red indicating a fault. Fill the
system with the external filling device until the pressure gauge
reads 1.0 bar.
Reset boiler: refer to diagram 2, turn the On/Off switch to (0),
wait for five seconds. Turn the On/Off switch to ( I ) to reset
the appliance.
• Warning: Take care not to overfill the boiler.
At a pressure of 2.5 bar or above indicating over pressure, the
boiler ON indicator (b) will flash red indicating a fault. The
pressure must be reduced to 1.0 bar by opening the drain
valve, refer to diagram 1. If the fault continues call the relevant
Servicing organisation or Glow-worm Service using the
telephone number on the inside front cover of this literature.
an adjacent inside wall, that is, the flue system will pass
directly to the rear or to either side to the terminal fitted on the
outside wall face.
This boiler may be installed in any room, although particular
attention is drawn to the installation of a boiler in a room
containing a bath or shower where reference must be made to
the relevant requirements.
Any electrical switch or boiler control utilising mains electricity
should be placed so that it cannot be touched by a person
using the bath or shower.
In GB this is the current I.E.E. WIRING REGULATIONS and
BUILDING REGULATIONS.
In IE reference should be made to the current edition of I.S.813
"Domestic Gas Installations" and the current ETCI rules.
These instructions should be carefully followed for the safe
and economical use of your boiler. The 'User Controls and
Lighting' section describes how to safely use the boiler.
Note: The boiler serial number is marked on the data label
attached to the rear of the control box.
Accessories
A range of accessories are available.
For further information contact your supplier.
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