IDEAL CLASSIC
RS30, RS40, RS50 & RS60
Wall Mounted, Balanced Flue
Gas Boilers
Installation & Servicing
CAUTION: To avoid the possibility of injury during the
installation, servicing or cleaning of this appliance, care should
be taken when handling edges of sheet steel components.
IMPORTANT:
This appliance is for use with
NATURAL GAS ONLY.
Ideal Classic
RS 30
RS 40
RS 50
RS 60
G.C. Appliance No.
41 429 35
41 429 36
41 429 37
41 429 38
NOTE TO THE INSTALLER: LEAVE THESE INSTRUCTIONS ADJACENT TO THE GAS METER
GENERAL
PERFORMANCE DATA
Table 1- GENERAL DATA
Boiler Size
RS 30
Main burner bar
RS 40
Aeromatic
AC 19/123 263
Gas control
RS 50
Aeromatic
AC 19/123 262
RS 60
Aeromatic
AC 19/123 261
HONEYWELL V 4700E 1072, 240V.
Burner Injector
BRAY
Cat 10
Size 750
Pilot injector
Cat 10
Size1050
Cat 10
Size 1350
Cat 10
Size 1600
HONEYWELL 45900421 - 001
(STAMPED 38/36A)
Gas supply connection
(in. BSP)
Rc 1/2 (1/2)
Flow connections - PUMPED & GRAVITY
22 mm copper
(Gravity must be increased to 28 mm at the boiler)
Return connections - PUMPED & GRAVITY
22 mm copper
(Gravity must be increased to 28 mm at the boiler)
Maximum static water head
m (ft.)
30.5 (100)
Minimum static water head
m (ft.)
0.45 (1.5)
Electrical supply
240 V ~ 50 Hz
External fuse rating
3A
Water content
litre (gal.)
2.7 (0.6)
3.65 (0.8)
3.65 (0.8)
4.6 (1.0)
Dry weight
kg (lb.)
33.0 (72.6)
39.0 (86.0)
39.0 (86.0)
44.0 (97.0)
Maximum installation weight
kg (lb.)
28.0 (61.6)
34.0 (75.0)
34.0 (75 0)
40.5 (89.0)
Boiler size
Height
mm (in.)
600 (23.6)
Width
mm (in.)
380 (15 0)
Depth
mm (in.)
300 (11.8)
Table 2- PERFORMANCE DATA
Boiler Size
Boiler input
MINIMUM
RS 30
RS 40
RS 50
RS 60
5.8
11.3
15.0
18.8
(19 800)
(38 500)
(51 200)
(64 100)
0.15 (19 0)
0.29 (37.0)
0.39 (49.3)
0.48 (61.7)
8.5
13.0
16.7
20.4
(29 000)
(44 350)
(56 850)
(69 600)
0.22 (27.9)
0.34 (42.7)
0 43 (54.8)
0.53 (67.0)
11.0
14.7
18.30
22.0
(37 500)
(50 000)
(62 500)
(75 000)
0.28 (36.1)
0.38 (48.2)
0.47 (60.2)
0.57 (72.2)
4.4
8.8
11.7
14.7
(15 000)
(30 000)
(40 000)
(50 000)
6.6
10.3
13.2
16.1
(22 500)
(35 000)
(45 000)
(55 000)
8.8
11.7
14.7
17.6
(Btu/h)
(30 000)
(40 000)
(50 000)
(60 000)
kW
To obtain gas consumption
(Btu/h)
(a) For l/s; divide heat input
(kW) by C.V. of the gas
(MJ/m3).
Gas consumption l/s (ft3/h)
(b) For ft3/h; divide heat input
(Btu/h) by C.V. of the gas
(Btu/ft3).
Heat inputs are pre-set to the
highest nominal rating.
MID
kW
(Btu/h)
Gas consumption
MAXIMUM
l/s (ft3/h)
kW
(Btu/h)
Gas Consumption l/s (ft3/h)
Boiler output
MINIMUM
kW
(Btu/h)
MID
kW
(Btu/h)
MAXIMUM
2
kW
Burner setting pressure
MINIMUM
mbar (in.w.g.)
4.5 (1.8)
8.9 (3.6)
9.7 (3 9)
11.0 (4.4)
(HOT)
MID
mbar (in.w.g.)
9.5 (3.8)
12.0 (4.8)
12.1 (4.9)
12.7 (5.1)
MAXIMUM
mbar (in.w.g.)
16.0 (6.4)
15.0 (6.0)
14.5 (5.8)
15.4 (6.2)
GENERAL
INTRODUCTION - GAS SUPPLY
INTRODUCTION
The Ideal Classic RS 30, RS 40, RS 50 and RS 60 are wall
mounted, balanced flue, natural draught gas boilers. They are
range rated to provide central heating outputs of 4.4kW
(15 000 Btu/h) to 8.8kW (30 000 Btu/h), 8.8kW (30 000 Btu/h)
to 11.7kW (40 000 Btu/h), 11.7kW (40 000 Btu/h) to 14.7kW
(50 000 Btu/h) and 14.7 kW (50 000 Btu/h) to 17.6kW
(60 000 Btu/h).
The boiler casing is of white enamelled mild steel with a
removable controls pod containing a drop down door.
The boiler thermostat is located behind the controls access
door, in the box mounted on the gas valve.
A Programmer Kit, which fits neatly within the casing, is
available as an optional extra. Separate fitting instructions are
included with this kit.
The boilers are suitable, as standard, for connection to open
vented systems ONLY.
An Overheat Thermostat Kit is available to allow the boiler to
be used on sealed water systems.
A complete Sealed System Module, which fits on top of the
appliance, is also available as an optional extra.
The boiler is suitable for connection to pumped, open vented
central heating systems; pumped central heating combined
with pumped, or gravity, indirect domestic hot water systems;
gravity or pumped, indirect domestic hot water supply systems.
See Frame 3 for details of the correct boiler tappings to use.
The boilers are suitable for the following wall thicknesses:
114 mm
(4 1/2 in)
to 191 mm (7 1/2in)
229 mm
(9 in)
to 305 mm (12 in)
318 mm
(12 1/2 in) to 394 mm (15 1/2 in)
406 mm
(16 in)
and
to 584 mm (23in)
Wall thicknesses outside of these sizes cannot be
accommodated .
Gas Safety (Installation and Use) Regulations, 1984
It is law that all gas appliances are installed by competent
persons (e.g. CORGI, identified by ) in accordance with the
above regulations. Failure to install appliances correctly could
lead to prosecution. It is in your own interest and that of
safety to ensure the law is complied with.
The installation of the boiler MUST also be in accordance with
the latest l.E.E. Wiring Regulations, the local building
regulations, bye-laws of the local water authority, the Building
Regulations and the Building Standards (Scotland) and any
relevant requirements of the local authority. Detailed
recommendations are contained in the following
British Standard Codes of Practice:
BS 6891
BS 6798
Low pressure installation pipes.
Installation of gas fired hot water boilers of rated
input not exceeding 60 kW.
BS 5449 Forced circulation hot water systems.
BS 5546 Installation of gas hot water supplies for domestic
purposes (2nd Family Gases).
BS 5440:1 Flues (for gas appliances of rated input not
exceeding 60 kW).
BS 5440:2 Ventilation (for gas appliances of rated input not
exceeding 60 kW).
Manufacturer's notes must NOT be taken, in any way, as
overriding statutory obligations.
IMPORTANT. These appliances are certificated by the British
Standards Institution for safety and performance. It is,
therefore, important that no external control devices, e.g. flue
dampers, economisers etc., are directly connected to these
appliances - unless covered by these 'Installation and
Servicing' instructions or otherwise recommended by Caradon
Ideal Ltd. in writing. If in doubt please enquire.
Any direct reconnection of a control device not approved by
Caradon Ideal Ltd. could invalidate the B.S.I. certification and
the normal appliance warranty. It could also infringe the Gas
Safety Regulations and the above regulations.
LOCATION OF BOILER
The boiler MUST be installed on a flat and vertical external
wall, capable of adequately supporting the weight of the boiler
and any ancillary equipment.
The boiler may be fitted on a combustible wall, and insulation
between the wall and the boiler is not necessary - unless
required by the local authority. THE BOILER IS NOT
SUITABLE FOR EXTERNAL INSTALLATION.
IMPORTANT NOTICE. If the boiler is to be fitted in a timber
framed building it should be fitted in accordance with the
British Gas publication 'Guide for Gas Installations in Timber
Frame Housing,' Reference DM2. If in doubt advice must be
sought from the local gas region of British Gas.
The boiler may be installed in any room or internal space,
although particular attention is drawn to the requirements of
the current l.E.E. Wiring Regulations and, in Scotland, the
electrical provisions of the building regulations applicable in
Scotland with respect to the installation of the boiler in a room
or internal space containing a bath or shower.
Where a room-sealed appliance is installed in a room
containing a bath or shower then the appliance and any
electrical switch or appliance control utilising mains electricity
should be so situated that it cannot be touched by a person
using the bath or shower.
Where installation will be in an unusual location, special
procedures may be necessary and BS.6798 gives detailed
guidance on this aspect.
A compartment used to enclose the boiler MUST be designed
and constructed specially for this purpose. An existing
cupboard or compartment may be used, provided it is
modified for the purpose. Details of essential features of
cupboards / compartment design, including airing cupboard
installation, are given in BS.6798.
In siting the boiler, the following limitations MUST be
observed:
1. The position selected for installation MUST allow
adequate space for servicing in front of the boiler and for
air circulation around the boiler. For the minimum
clearances required for safety and subsequent service,
see the Wall Mounting Template, Frame 6 and Frame 7.
In addition, sufficient space may be required to allow lifting
access on to the wall mounting plate.
2. This position MUST also permit the provision of a
satisfactory balanced flue termination.
GAS SUPPLY
The local gas region should be consulted at the installation
planning stage in order to establish the availability of an
adequate supply of gas. An existing service pipe must NOT be
used without prior consultation with the local gas region.
A gas meter can only be connected by the local gas region or
by a local regional contractor.
3
GENERAL
FLUE INSTALLATION - AIR SUPPLY
An existing meter should be checked, preferably by the gas
region, to ensure that the meter is adequate to deal with the
rate of gas supply required.
Installation pipes MUST be fitted in accordance with BS. 6891.
Pipework from the meter to the boiler MUST be of an adequate
size. Do NOT use pipes of smaller size than the boiler inlet gas
connection.
The complete installation MUST be tested for gas soundness
and purged as described in the above Code.
FLUE INSTALLATION
The flue must be installed in accordance with the
recommendations of BS. 5440:1
Terminal Position
1. The boiler MUST be installed so that the terminal is
exposed to external air.
2. It is important that the position of the terminal allows the
free passage of air across it at all times.
3. Minimum acceptable spacings from the terminal to
obstructions and ventilation openings are specified in
Table 3.
4. Where the lowest part of the terminal is fitted less than
2 m (6.6 ft.) above a balcony, above ground or above a
flat roof to which people have access then the terminal
MUST be protected by a purpose designed guard.
Terminal guards are available from:
(Model P6)
Tower Flue Components Ltd.,
Vale Rise, Tonbridge, Kent. TN9 1TB
(Model C).
and
Ensure that the guard is fitted centrally.
5. Where the terminal is fitted within 850 mm (34 in.) of a
plastic or painted gutter or 450 mm (18 in.) of painted
eaves then an aluminium shield at least 750 mm (30 in.)
long should be fitted to the underside of the gutter or
painted surface.
6. The air inlet/products outlet duct and the terminal of the
boiler MUST NOT be closer than 25 mm (1 in.) to
combustible material. Detailed recommendations on the
protection of combustible material are given in
BS. 5440:1, 1990.
IMPORTANT. It is absolutely ESSENTIAL to ensure, in
practice, that products of combustion discharging from the
terminal cannot re-enter the building or any other adjacent
building through ventilators, windows, doors, other sources
of natural air infiltration or forced ventilation/ airconditioning.
If this should occur, the appliance MUST be turned OFF
immediately and the local gas region consulted.
TERMINAL
The terminal assembly can be adapted to accommodate
various wall thicknesses. Refer to Frame 1 'Unpacking'.
AIR SUPPLY
Detailed recommendations for air supply are given in
BS.5440:2. The following notes are for general guidance:
1. It is NOT necessary to have a purpose provided air vent
in the room or internal space in which the boiler is
installed .
2. If the boiler is to be installed in a cupboard or compartment,
permanent air vents are required (for cooling purposes) in
the cupboard/ compartment, at both high and low levels.
The air vents must either communicate with room/internal
space or be direct to outside air. The minimum effective
4
Refer to Tables 4 - 7 for details of air vent positioning and
sizing.
Table 3 - BALANCED FLUE TERMINAL POSITION
The following notes are intended tor general guidance:
Quinnel, Barret & Quinnel Ltd.,
884 Old Kent Road, London SE15
areas of the permanent air vents required in the cupboard/
compartment are specified as follows and are related to
maximum rated heat input.
3. Both air vents MUST communicate with the same room or
internal space or MUST be on the same wall to outside air.
4. In siting the air vents care must be taken to avoid the
freezing of pipework.
Minimum
Spacing
1. Directly below an opening window,
air vent or other ventilation opening
300 mm (12 in.)
2. Below guttering, drain pipes or soil
pipes
300 mm (12 in.)
3. Below eaves
300 mm (12 in.)
4. Below balconies or a car port roof
600 mm (24 in.)
5. From vertical drain pipes or soil pipes
75 mm (3 in.)
6. From internal or external corners
600 mm (24 in.)
7. Above adjacent ground, roof or
balcony level
300 mm (12 in.)
8. From a surface facing the terminal
600 mm (24 in.)
9. From a terminal facing a terminal
600 mm (24 in)
10. From an opening in a car port
(e.g. door or window) into dwelling
1200 mm (48 in)
11. Vertically from a terminal on the same
wall
1500 mm (60 in)
12. Horizontally from a terminal on the wall
300mm (12 in.)
Table 4 - RS 30 AIR SUPPLY
Position of air vent
Air from room/
internal space
Air direct
from outside
HIGH LEVEL
cm2
(in2)
102
(16)
51
(8)
LOW LEVEL
cm2
(in2)
102
(16)
51
(8)
Table 5 - RS 40
AIR SUPPLY
Position of air vent
Air from room/
internal space
Air direct
from outside
HIGH LEVEL
cm2
(in2)
135
(21)
68
(11)
LOW LEVEL
cm2
(in2)
135
(21)
68
(11)
GENERAL
AIR SUPPLY- ELECTRICAL SUPPLY
Table 6 - RS 50 AIR SUPPLY
Position of air vent
Air from room/
internal space
Air direct
from outside
HIGH LEVEL
cm2
(in2)
170
(27)
85
(14)
LOW LEVEL
cm2
(in2)
170
(27)
85
(14)
Air from room/
internal space
Air direct
from outside
Table 7 - RS 60 AIR SUPPLY
Position of air vent
HIGH LEVEL
cm2
(in2)
203
(32)
102
(16)
LOW LEVEL
cm2
(in2)
203
(32)
102
(16)
WATER CIRCULATION SYSTEM
The boiler must NOT be used for direct hot water supply. For
the types of system and correct piping procedure see
'Introduction' and Frame 3.
Note: All water connections MUST be made to the boiler TOP
tappings.
The central heating system should be in accordance with
BS.6798 and, in addition, for Smallbore and Microbore
systems, BS.5449.
The domestic hot water system, if applicable, should be in
accordance with the relevant recommendations of BS.5546.
Copper tubing to BS.2871 :1 is recommended for water
carrying pipework.
The hot water storage cylinder MUST be of the indirect type
and should preferably be manufactured of copper.
Single-feed, indirect cylinders are not recommended and
MUST NOT be used on sealed systems.
The appliances are NOT suitable for gravity central heating
systems, with or without additional gravity domestic hot water
supply nor are they suitable for the provision of gravity
domestic hot water requirements above a 181.8 litre (40 gal)
tank capacity, depending on the model.
The hot water cylinder and ancillary pipework not forming part
of the useful heating surface should be lagged to prevent heat
loss and any possible freezing - particularly where pipes run
through roof spaces and ventilated underfloor spaces.
The boiler must be vented.
If venting cannot be done via a flow connection then a
separate vent MUST be fitted by the installer. This does NOT
mean that more than one open vent is required. Other parts of
the system, which may become unavoidably air locked, can be
automatically vented.
Draining taps MUST be located in accessible positions, which
permit the draining of the whole system - including the boiler
and hot water storage vessel. Draining taps should be at least
1/2in. BSP nominal size and be in accordance with BS.2879.
INSTALLATION
The boiler is fitted with a special drain plug which is provided
to drain the BOILER ONLY in the event of the system drain
plug being unable to do so.
The hydraulic resistance of the boilers, at MAXIMUM OUTPUT
with an 11 °C (20°F) temperature differential, are shown in
Table 8.
THERMOSTATIC RADIATOR VALVES
Caradon Ideal Ltd. recommend that heating systems utilising
full thermostatic radiator valve control of temperature in
individual rooms should also be fitted with a room thermostat
controlling the temperature, in a space served by radiators not
fitted with such a valve - as stated in BS 5449.
When thermostatic radiator valves are used, the space heating
temperature control over living / dining area or hallway, having
a heating requirement of at least 10% of the boiler heat output,
should be achieved using a room thermostat whilst other
rooms are individually controlled by thermostatic radiator
valves. However, if the system employs thermostatic radiator
valves on all radiators then a bypass must be fitted to ensure a
flow of water should all the TRV's be in the closed position.
Table 8 - WATER FLOW RATE AND PRESSURE LOSS
Boiler Size
RS 30
RS 40
RS 50
RS 60
Boiler output
kW
Btu/h
8.8
30 000
11.7
40 000
14.7
50 000
17.6
60 000
Water flow
rate
l/min
gal/h
11.4
150
15.2
200
19.0
250
22.8
300
mbar
in w.g.
22.0
8.9
20.4
8.3
31.5
12 6
41.7
16.7
Pressure
loss
ELECTRICAL SUPPLY
Wiring external to the appliance MUST be in accordance with
the current 1. E. E. Wiring Regulations and any local
regulations which apply.
The boiler is supplied for 240 V ~ 50 Hz
Single Phase
Fuse Rating is 3 A
The method of connection to the mains electricity supply
MUST facilitate complete electrical isolation of the boiler,
preferably by the use of a fused, unswitched three-pin plug
and a shuttered socket outlet, both complying with the
requirements of BS.1363. Alternatively, a fused double pole
switch, having at least a 3 mm (1/8 in.) contact separation in
both poles and servicing only the boiler, may be used.
The point of connection to the mains should be readily
accessible and adjacent to the boiler, except that for bathroom
installations, the point of connection to the mains MUST be
situated outside of the bathroom.
Note: Where a room sealed appliance is installed in a room
containing a bath or shower then the appliance and any
electrical switch or appliance control utilising mains electricity
should be so situated that it cannot be touched by a person
using the bath or shower.
UNPACKING - BOILER ASSEMBLY
1 UNPACKING
The boiler is supplied fully assembled in one pack ' A' together with one of four packs, B, B1, C and D, containing the flue terminal
appropriate to the wall thickness. Optional extras, if ordered (programmer kit, complete sealed system module and overheat
thermostat kit) are supplied in separate boxes.
PACK 'A' CONTENTS
• Complete boiler
• Wall mounting template
• Wall mounting plate
•
•
•
•
•
Installation & Servicing Instructions
User's Instructions
Hardware pack
Controls pod door
Cover plate
HARDWARE PACK CONTENTS
• No.14 x 50mm wood screws,
3 off
• No.10 x 50mm wood screws, 3 off
• Wall plug (TP2B - brown), 6 off
•
•
•
•
Data plate indication
arrow, 1 off
Back panels to wall
sealing strip, 3 off
5
INSTALLATION
UNPACKING - BOILER ASSEMBLY
1 A UNPACKING - continued
1. Unpack the boiler
2. Remove the casing as follows, and place to one side to avoid
damage.
(a) Release the controls pod fixing screws (a) 3 full turns only.
Remove the pod by pulling it forward to disengage from
the keyhole slots.
(b) Undo the 3 screws (b) retaining the casing to the back panel.
(c) Remove the casing in the direction of the arrows.
Metal clip
Controls
pod casing
Packing base
Controls
pod
casing
Controls
pod door
3. Fit the plastic controls pod door to the controls casing as
follows:
A. Insert the L.H. door catch into the L.H. metal clip, fitted
to the controls pod casing.
B. Push the R.H.door catch into the R.H. metal clip.
4. Unpack the flue terminal.
5. Remove the boiler from its packing base. Do not remove
the pod casing controls protection box.
FLUE PACKS
Note: All flue packs contain 2 sachets of sealant.
PACK B. Contains a balanced flue terminal suitable for wall thicknesses from 229 mm ( 9 in.)
to 305 mm (12 in.)
PACK B1. Contains a balanced flue terminal suitable for wall thicknesses from 318 mm (12 1/2in.) to 394 mm (15 1/2in.)
PACK C. Contains a balanced flue terminal suitable for wall thicknesses from 114 mm ( 4 1/2in.) to 191 mm ( 7 1/2in.)
PACK D. Contains extension ducts which, when used in conjunction with PACK B, are suitable for wall thicknesses from
406 mm (16 in. ) to 584 mm (23 in.).
Note: Wall thicknesses outside those specified cannot be accommodated. An overlap of at least 50 mm at any duct joints must
be allowed
2 BOILER ASSEMBLY
Exploded view
6
INSTALLATION
SYSTEM DESIGN
3 BOILER WATER CONNECTIONS. Open vented systems.
1. This appliance is NOT suitable for use in a direct hot water
system
2. If the boiler is to be used on a sealed system an overheat
thermostat kit is available and must be installed, in
accordance with the instructions supplied with the kit.
3. If the boiler is to be used for gravity domestic hot water
supply then cut off the spun ends of the gravity flow and
return pipes and fit a 22 mm to 28 mm copper connection
at the boiler gravity flow and return connections in order to
run the gravity circuits in 28 mm pipe.
For Sealed System applications (fully pumped) refer to the
Overheat Thermostat Kit instructions
Boiler
casing
Ensure that the
pipes are 50 mm
long - measured
from the top of
the boiler casing
if capillary
fittings are used
- or 35mm long if
compression
fittings are used.
4 OPEN VENT SYSTEM REQUIREMENTS. Fully pumped.
The system should be vented directly off the boiler flow pipe, as
close to the boiler as possible. The cold feed entry should be
inverted and MUST be positioned between the pump and the vent,
and not more than 150 mm (6 in.) away from the vent connection.
Note: Alternatively, the redundant gravity flow and return
connections may be used for feed and vent if a close coupled feed
and vent system is not desired
There should be a minimum height - 450 mm (18 in.) of open vent
above cistern water level. If this is impossible refer below.
The vertical distance between the highest point of the system
and the feed/expansion cistern water level MUST not be less
than 450 mm (18 in.). The pump MUST be fitted on the flow side of
the boiler.
Controls
pod door
All dimensions in mm. (in.)
A suitable pump is a domestic circulator capable of providing an
11°C (20°F) temperature differential (e.g. Grundfos UPS 15 /50 or
equivalent). The vertical distance between the pump and feed /
expansion cistern MUST comply with the pump manufacturer's
minimum requirements to avoid cavitation. Should these
conditions not apply, either lower the pump position or raise the
cistern above the minimum requirement specified by Caradon
Ideal Ltd. Note: A cold water feed path must be available back to
the boiler, when all automatic valves are in the closed position
(refer BS.6798) and when close coupled the feed must not be in a
vertical leg.
All dimensions in mm. (in.)
LOW HEAD INSTALLATIONS
MINIMUM REQUIREMENT
The Ideal Classic range of boilers can be installed in low head
situations by fitting a 'surge arrester' in the expansion pipe - as shown.
The following conditions MUST be observed;
1. The surge arrester must be at least 42 mm in diameter
x 150 mm long, thus ensuring a MINIMUM air gap and a
MINIMUM depth of water below the static water level (cold ) of
75 mm.
2. The static water level (cold) must be at least 200 mm above the
top of the horizontal flow pipe, fitted as shown. The vent
connection MUST NOT be made immediately off the top of the
boiler, as venting is made less efficient.
3. The maximum practical length of 15 mm cold feed pipe should be
used in order to reduce the effective volume of system water
expanding into the feed / expansion cistern
7
INSTALLATION
SYSTEM DESIGN - BOILER DIMENSIONS & CLEARANCES
5 REQUIREMENTS FOR CORRECT GRAVITY HOT WATER PERFORMANCE
NOTE: Gravity horizontal pipes should be ABOVE ceiling level and
as SHORT as possible. A MINIMUM inclination of 25 mm per 3 m
run (1 in per 10 ft.) is required to avoid air locks. If these conditions
cannot be met, pumped primaries MUST be used.
The above graph assumes 8 elbows in the gravity circuit. For each
elbow in excess of 8, (R) must be reduced by 300 mm (12 in.) or
(H) increased by 100 mm (4 in.)
6 BOILER DIMENSIONS / SERVICES
All dimensions in mm (in.)
1
7 CLEARANCES & TERMINAL OPENING
Front clearance
from the front of
the boiler casing.
These are the
minimum
clearances
needed to allow
access to service the boiler, but additional space may be needed
for installation, depending on site conditions. Note: If using the
sealed system module, refer to the instructions packed with the
module for the necessary clearances.
8
8 WALL MOUNTING TEMPLATE
1. Tape the template to the wall in the selected position.
Ensure squareness by use of a plumbline - as shown.
2. Mark out the position
of the 3 wallplate
screws, choosing 1
from each group of 3
holes. Also mark the
position of the hole
for the duct, the
jacking plate screw
and the top cover
plate screws.
3. Drill the three holes,
8 mm (5/16 in.), and
insert the 3 plastic
plugs. Also drill the
jacking plate screw
and the top cover
plate screw holes and
insert the plastic
4. Remove the template from the wall.
plugs.
INSTALLATION
9 PREPARING THE WALL
PREPARING THE WALL - MOUNTING THE BOILER
10 PREPARING THE BOILER
NOTE: THE WALL MUST BE OF SUITABLE LOAD BEARING
CAPACITY.
Carefully place the boiler on its side and stick the self
adhesive sealing tape to the boiler back panel as shown
1. Cut the appropriate hole in the wall for insertion of the
terminal assembly. Note: The terminal must not come into
contact with a combustible material, such as that used in
the non-standard construction of timber framework
and plasterboard etc.
REAR VIEW OF BOILER
Sealing tape
Boiler air duct
Wall mounting
plate
2. Fix the mounting plate to
the wall with the 3 (No. 14 x
50 mm) screws provided.
Note: Do not remove the controls protection box until the
boiler has been lifted onto the wall mounting plate.
FLUE ALIGNMENT
11 MOUNTING THE BOILER
1. Lift the boiler onto the wall mounting plate, entering the
projecting flue duct into the opening cut in the wall, and
lowering the two slots in the boiler back panel onto the
angled tabs on the top of the wall mounting plate.
It is most important that the boiler is
installed in the vertical position
FRONT VIEW
DO NOT USE THE BURNER ASSEMBLY FOR LIFTING.
Dimension 'X'
wall thickness
2. Remove the controls protection box.
Flue collector hood
- refer to note 4
Top cover plate
LIFT HERE
SIDE VIEW
The flue duct
should be
horizontal
LIFT HERE
Use the jacking plate
to align the boiler
The wall must be of suitable load-bearing capacity
Wall mounting plate
Boiler flue
duct
On no account use the burner
assembly for lifting
LIFT HERE
LIFT HERE
3. Adjust the flue to its horizontal position by
tilting the boiler forward at the bottom and
then turning the jacking plate. Release
and check alignment with a spirit level.
Secure the jacking plate with a
No. 10 x 50 mm wood screw.
4. Remove the flue collector hood (refer
Frame 5, 'Servicing') and ensure that the
flue baffles are fully inserted in the
flueways
5. Fit the top cover plate in position above
the boiler air duct with the two
No.10 x 50 mm screws provided.
6. Make all water connections.
9
FITTING THE FLUE ASSEMBLY - EXTENSION DUCTS
INSTALLATlON
12 FITTING THE FLUE ASSEMBLY. Duct lengths up to 400 mm (16 in.)
FLUE TERMINAL ASSEMBLY
3
3
5
1
2
5
1
2
LEGEND
1.
2.
3.
4.
4
4
Boiler air duct
Boiler flue duct
Terminal air duct
Terminal flue duct
A. Air duct join
B. Flue duct join
6
5. Terminal grille
6. Terminal grille securing screws
FLUE TERMINAL SHOWN IN POSITION
Note: For duct lengths greater than 400 mm (16 in.), refer to Frame 13.
1. Remove the two securing screws and separate the terminal
grille from the terminal assembly.
2. Remove the four securing screws and separate the terminal
flue duct from the terminal air duct.
3. Smear sealant around outer perimeter of terminal air duct at the
opposite end to the brackets and on the mating face of the boiler
air duct (use one sachet of sealant).
4. Push the terminal air duct fully in- until the fixing brackets
contact the wall face.
5. Make good between the wall and duct, from OUTSIDE of the
building.
6. From OUTSIDE of the building, pass the terminal flue duct
through the wall opening and slide it over the boiler flue duct.
Locate it as shown and fix it in position with the four screws
previously removed.
7. Seal the flue duct join (B) with the remaining sachet of sealant
provided, either from inside the building (through the flue
duct) or from outside of the building.
8. Fasten the terminal grille to the duct assembly.
9. Replace the collector hood.
13 EXTENSION DUCTS. Duct lengths greater than 400 mm (16 in.)
3. Remove the terminal assembly.
4. Place the boiler in position - entering the extension
3
duct into the wall opening.
2
Extension ducts
5. Make good the brickwork around the wall opening.
6. Separate the terminal grille, terminal air duct
and terminal flue duct. Refer to Frame 12.
7. From OUTSIDE of the building, pass the
terminal air duct through the wall opening and
slide it into the extension air duct, locating it as
shown.
8. Smear sealant around outer perimeter of
terminal air duct at the opposite end to the
brackets and on the mating face of the boiler
air duct (use one sachet of sealant).
9. Push the duct fully in until the fixing brackets
contact the wall face.
Typical minimum
10. Ensure that the duct is level and make good
overlap - 50mm (2 in.)
between the wall and the duct from OUTSIDE
4
of the building.
5
6
LEGEND
11. From OUTSIDE of the building, slide the
1. Boiler air duct
A. Air duct join
extension flue duct over the boiler flue duct to
2. Boiler flue duct
5. Terminal grille
B. Flue duct join
the same distance as the extension air duct.
3. Terminal air duct
6. Extension air duct
C. Terminal air duct join
Seal the duct joint (B) with the sealant
4. Terminal flue duct 7. Extension flue duct D. Terminal flue duct joint
provided.
12. From OUTSIDE of the building, pass the
1. BEFORE PLACING THE BOILER IN POSITION, loosely
terminal flue duct through the wall opening and
fit the extension air duct and terminal assembly to the
slide it into the extension flue duct. Locate it
boiler air duct and adjust to the required overall duct
as shown, and fix in position with the four
length. Note: Ensure that any of the duct overlaps are
screws previously removed.
not less than 50 mm (2 in.).
13. From OUTSIDE of the building, seal the duct join D with
2. Secure the extension air duct in position, using the
the sealant provided.
adhesive tape provided, at join A. Ensure that a good
14. Fasten the terminal grille to the duct assembly.
seal is made.
15. Replace the collector hood.
EXTENSION DUCTS SHOWN FITTED
10
INSTALLATION
14 GAS CONNECTION
SERVICE CONNECTIONS - WIRING DIAGRAMS
15 ELECTRICAL CONNECTIONS
A MINIMUM gas pressure of 20 mbar (8 in.w.g.) MUST be
available at the boiler inlet.
The main gas cock is on the left hand side of the gas control
valve, as shown.
To facilitate connection it is recommended that the gas cock
is not removed from the gas control valve.
WARNING: The
appliance MUST be
efficiently earthed.
EARTH
(Green/yellow)
NEUTRAL
(Blue)
A mains supply of
240 V ~ 50 Hz is
required.
LIVE
All external controls and wiring
(Brown)
MUST be suitable for mains
voltage. Wiring should be in
3-core PVC insulating cable
NOT LESS than 0.75 mm2 (24 x 0.2 mm) to BS.6500, Table 16.
Gas
inlet
Gas inlet
Also refer to 'Gas supply' - page 3.
16 EXTERNAL CONTROLS
The wiring diagrams illustrated in Frames 18 - 21 cover the
systems most likely to be fitted to this appliance.
For wiring external controls to the Ideal Classic RS boiler,
reference should be made to the system wiring diagrams
supplied by the relevant manufacturer, in conjunction with the
wiring diagrams shown in Frames 17 - 21.
Difficulty in wiring should not arise, providing the following
directions are observed:
1. Controls that switch the system ON and OFF, e.g. a time
switch MUST be wired in series in the live mains lead to
the boiler.
2. Controls that over-ride an ON/OFF control, e.g. a frost
thermostat, MUST be wired into the mains lead, in parallel,
with the control(s) to be over-ridden - refer to Frame 21.
3. Controls that switch the circulation pump only ON and
OFF, e.g. a room thermostat, MUST be wired in series with
the pump in the live pump lead.
4. If a proprietary system is used, follow the instructions
supplied by the manufacturer.
5. SYSTEM DESIGNS FEATURING CONTROLS OR
WIRING ARRANGEMENTS WHICH ALLOW THE BOILER
TO FIRE WHEN THERE IS NO PUMPED OR GRAVITY
CIRCULATION TAKING PLACE SHOULD NOT BE
FITTED.
Wiring external to the boiler MUST be in accordance with current
l.E.E. Wiring Regulations and local regulations.
The supply connection may be made via a removable plug to a
shuttered socket/outlet, preferably adjacent to the boiler, and,
should such a plug be used for connection to the mains, it MUST
be of the 3-pin type, wired as shown, fused at 3A and comply with
the requirements of BS.1363. Alternatively, a fused double-pole
switch, having a 3 mm contact separation in both poles, serving
only the boiler and its external controls, may be used.
Note: If the optional Programmer Kit is to be fitted, refer to the
instructions provided with the kit, ignore this Frame and go to
Frame 16.
The internal wiring of the control box is shown in Frame 17.
A wiring diagram is also contained in the Lighting Instructions
(inside the control pod door).
DETAIL OF CONTROL BOX TERMINALS
Note: In order to connect the
Terminal strip
incoming mains wires, first
Alignment
remove the control box cover,
pegs
then remove the terminal fixing
screw and lift the terminal strip
Terminal
clear of the control box (refer to
fixing
Fr. 23 'Servicing').
screw
Ensure that the earth lead is longer than the live and neutral so
that if the cable slips in its anchorage the current carrying
conductors become taut before the earth conductor and that the
cable is routed through the strain relief clamp. Ensure all cables
are secure and that no basic insulation is accessible outside of the
control box. (Refer diagram in Frame 23, 'Servicing').
FLOW WIRING
DIAGRAM
17 PICTORIAL WIRING
Advice on required modifications to the wiring may be obtained
from the component manufacturers.
Notes
1. Connections between a frost thermostat and the
time control should be made without disturbing
other wiring.
2. A frost thermostat should be sited in a cool
place in the house, but where it can sense heat
from the system.
LEGEND
br brown
g/y
green/yellow
b blue
11
INSTALLATION
SYSTEM WIRING DIAGRAMS
19 TWO SPRING CLOSED VALVES
18 MID POSITION VALVE
Pumped only
Notes:
1. Some earth wires are omitted for clarity. Ensure proper earth
continuity when wiring.
2. Numbering of terminals on thermostats is specific to the
manufacturer.
3. This is a fully controlled system - set the boiler thermostat to
maximum.
4. Switchmaster 'Midi' is similar in operation but the wiring differs
slightly; see manufacturer's literature.
LEGEND
b - blue
gy - grey
r - red
bk - black
g - green
y - yellow
br - brown
or - orange
w - white
Pumped only
Notes:
1. Some earth wires are omitted for clarity.
Ensure proper earth continuity when wiring.
2. Numbering of terminals on thermostats is specific to the
manufacturer.
3. This is a fully controlled system - set the boiler thermostat to
maximum.
4. Switchmaster valve has grey & orange auxiliary switch leads
but the grey wire must be connected to the live supply.
LEGEND
b - blue
gy - grey
bk - black
r - red
br - brown
or - orange
w - white
TLX 2259
TLX 2284
RTE
RTM/RTCC
Terminal trip
suitably enclosed
Terminal strip
suitably enclosed
Typical programmer
Typical programmer
CH may be
selected
independently
CH cannot be
selected without
HW
Boiler supply connector
Boiler supply connector
Mains
21 FROST PROTECTION
20 HONEYWELL 'C' PLAN
Gravity HW & Pumped CH
A. Double pole frost 'stat, e.g. SOPAC TA37.04
Typical Programmer
Notes:
1. Some earth wires are omitted for clarity. Ensure proper
earth continuity when wiring
2. Numbering of terminals on thermostats is specific to the
manufacturer.
LEGEND
w - white
or - orange
g - green
bk b r -
black
blue
red
Mains
br gy y -
brown
grey
yellow
Typical programmer
using change-over
contacts
V4043H 1049 in HW circuit
On Off
On Off
HW
CH
To system controls
Typical programmer
CH may be
selected
independently of
HW
Mains
12
Central heating systems fitted wholly inside the house do not normally
require frost protection as the house acts as a 'storage heater' and can
normally be left at least 24 hrs. without frost damage. However, if parts of
the pipework run outside the house or if the boiler will be left off for more
than a day or so, then a frost 'stat should be wired into the system. This is
usually done at the programmer, in which case the programme selector
switches are set to 'Off' and all other controls MUST be left in the running
position. The frost 'stat should be sited in a cold place but where it can
sense heat from the system. Wiring should be as shown, with minimal
disturbance to other wiring of the programmer. Designation of the terminals
will vary, but the programmer and thermostat manufacturer's leaflets will
give full details. Diagram A shows a double pole frost 'stat, which should
suffice for all systems which do not use the 'OFF' terminals of the
programmer. Diagram B shows a 'change-over' frost 'stat, which will cover
most systems which do use 'CH OFF.' If, however, on such a system the
HW pipework is in an isolated part of the house, a second frost 'stat may
be used to protect it. If in doubt, ask your installer for advice.
COMMISSIONING AND TESTING
INSTALLATION
22 COMMISSIONING AND TESTING
(b) Gas Installation
(a) Electrical Installation
1. The whole of the gas installation, including the meter,
MUST be inspected and tested for soundness, and purged
in accordancewith the recommendations of BS. 6891.
1. Checks to ensure electrical safety should be
carried out by a competent person.
2. ALWAYS carry out preliminary electrical system
checks, i.e. earth continuity, polarity, resistance to
earth and short circuit using a suitable test meter.
3. Refit the control box cover.
Note: The gas service
cock is shown in the
OPEN position.
BOILER CONTROLS
LEGEND
A Gas valve
control button
B Sightglass
C Thermostat control knob
D Piezo unit ignition
3. Retighten the screws and check for gas soundness.
WARNING. Whilst effecting the required gas soundness test
and purging air from the gas installation open all windows and
doors, extinguish naked lights and DO NOT SMOKE.
23 INITIAL LIGHTING
G
2. Purging air from the gas installation may be expedited by
loosening the screws on the gas service cock and purging
until gas is smelled.
F
E
E Burner pressure test nipple
F Main burner pressure
adjuster
G Inlet pressure test nipple
H Gas service cock
1. Check that all drain cocks are CLOSED, and that the stop
valves in the flow and return lines are OPEN and that the
thermostat phial is in its pocket.
Determine the required heat input and fix the adhesive
arrow (supplied in the Hardware Pack) to the data plate on
the bottom right hand side of the back panel, indicating the
intended burner setting pressure heat input.
2. Check that the gas service cock (H) is ON and that the
boiler thermostat control knob (C) is OFF. Fit the boiler
casing (Frame 24) but do not fit the controls casing pod.
3. Loosen the screw in the burner pressure test nipple (E)
and connect a gas pressure gauge via a flexible tube.
4. Slide the gas control button (A) to the RIGHT until
resistance is felt and then release it. WAIT FOR THREE
MINUTES.
5. Push in and retain fully depressed the gas control button
(A). Press and release the piezo unit button (D) repeatedly
until the pilot is seen to light through the sightglass (B).
6. Hold the gas control button depressed for 15 seconds after
the pilot burner has ignited, then release.
7. If the pilot burner fails to remain alight at this stage, repeat
the procedure detailed above but wait longer than 15
seconds before releasing the gas control button.
8. Check the appearance of the pilot flame to ensure that it
envelopes the tip of the thermocouple and is
approximately 25mm (1 in) long. Check that the
thermocouple output is between 8 and 15 mV closed
circuit.
The pilot flame is factory set and no adjustment is
possible. If the pilot flame is incorrect refer to Frame 7 of
the 'Servicing' instructions.
9. Check that the electricity supply and all external controls
are ON.
10. Set the boiler thermostat control knob to position '6' and
check that the burner cross lights smoothly from the pilot
flame.
11. Test for gas soundness around the boiler gas
component joints, using leak detection fluid.
12. Operate the boiler for ten minutes to stabilise the burner
temperature.
13. Check the burner setting pressure against the relevant
values quoted in Table 2, Page 2.
14. If the burner setting pressure requires adjustment, turn
the pressure adjusting screw (F) as required
(CLOCKWISE to DECREASE).
15. Set the boiler thermostat control knob to OFF. Remove
the pressure gauge tube and tighten the sealing screw in
the pressure test nipple. Relight and check for gas
soundness at the pressure test nipple.
16. Refit the controls casing pod and tighten the two front
fixing screws.
17. Close the pod door.
22 FITTING THE CASING
1. Check that the sealing strip is in place along the four rear
edges of the boiler
casing.
2. Lift the boiler
casing up to the
boiler
assembly,
locate over the
upper support
bracket and
secure with the
3 captive
screws
3. The casing must be sealed correctly. This MUST be
checked by ensuring that, at the top and bottom edges of
the casing, the seal is compressed over its complete
length.
13
INSTALLATION
COMMISSIONING AND TESTING
25 GENERAL CHECKS
Make the following checks for correct operation:
1. Turn the boiler thermostat OFF and ON, and check that
the main burner is extinguished and relit in response.
2. Flame failure device
Check the operation of the flame failure device in the
gas control valve as follows:
(a) Extinguish the pilot flames by closing the gas service
cock (H) and note the time taken for the flame failure
device to shut down - identified by a click within the gas
control valve. This MUST NOT be longer than
50 seconds.
5. With the system HOT, examine all water connections for
soundness. Then turn OFF the gas, electricity and water
supplies to the appliance and drain down whilst the system
is still hot, in order to complete the flushing process. Refill
and vent the system and again check for water soundness.
6. Finally, set the controls to the User's requirements.
The temperatures quoted below are approximate and vary
between installations.
Knob Setting
Flow Temperature
o
C
F
o
1
56
133
2
61
142
3. With the burner alight again, slide the gas control button to
the right until resistance is felt and then release it. The
burner and pilot flames should shut down immediately.
Note: A latch in the gas control provides a safety delay
period before the boiler can be relit.
3
66
152
4
72
161
5
77
170
4. The correct operation of ANY programmer and all other
system controls should be proved. Operate each control
separately and check that the main burner or circulating
pump, as the case may be, responds.
6
82
180
(b) Open the gas service cock and relight the pilot.
WARNING. The boiler MUST NOT be operated with the casing removed.
26 HANDING OVER
After completing the installation and commissioning of the system, then the installer should hand over to the
householder by the following actions:
1. Hand the User's Instructions to the Householder and
explain his or her responsibilities under the Gas Safety
(Installation and Use) Regulations 1984.
2. Draw attention to the Lighting Instruction label affixed to
the controls pod door.
3. Explain and demonstrate the lighting and shutting down
procedures.
4. The operation of the boiler and the use and adjustment of
ALL system controls should be fully explained to the
Householder, to ensure the greatest possible fuel
economy, consistent with household requirements of both
heating and hot water consumption.
Advise the User of the precautions necessary to prevent
damage to the system and to the building, in the event of
the system remaining inoperative during frosty conditions.
14
5. Explain the function and the use of the boiler thermostat
and external controls.
6. Explain the function of the boiler overheat thermostat
(ONLY FITTED FOR SEALED SYSTEM USE) and
emphasise that if cutout persists, the boiler should be
turned off and the local heating installer consulted.
7. Explain and demonstrate the function of time and
temperature controls, radiator valves etc., for the
economic use of the system.
8. If any Programmer Kit is fitted, then draw attention to the
Programmer Kit User's Instructions and hand them to the
Householder.
9. Stress the importance of regular servicing by the local
gas region or by a qualified heating engineer and that a
comprehensive service should be carried out AT LEAST
ONCE A YEAR.
GENERAL - CLEANING AND ADJUSTMENT
SERVICING
1 SCHEDULE
2 BOILER CASING REMOVAL
To ensure the continued safe and efficient operation of the
appliance, it is recommended that it is checked at regular
intervals and serviced as necessary. The frequency of
servicing will depend upon the installation condition and usage,
but should be carried out at least annually .
It is the law that any service work must be carried out by a
competent person.
1. Refer to Frame 1.
2. If the Ideal Classic sealed system module is fitted lift off
the casing to expose the boiler casing top fixing screw.
3. Open the controls pod door.
4. Release the three captive screws at the top and bottom of
the casing. Lift the casing off the boiler and retain in a safe
place .
(a) Light the boiler and carry out a pre-service check, noting
any operational faults.
(b) Clean the main burner.
(c) Clean the heat exchanger.
(d) Clean the main and pilot injectors.
(e) Check that the flue terminal is unobstructed and that the
flue system, including the inner cover, is sealed correctly.
(f) If the appliance has been installed in a compartment, check
that the ventilation areas are clear.
Top captive screw, 1 off
Bottom
captive
screws,
2 off
The servicing procedures are covered more fully in Frames 2
to 7 and must be carried out in sequence.
WARNING. Disconnect the electrical supply.
IMPORTANT. After completing the servicing or exchange of
components always test for gas soundness and carry out
functional checks as appropriate.
Note. In order to carry out either servicing or replacement of
components, the boiler casing must be removed (Frame 2).
IMPORTANT. When work is complete the casing MUST be
correctly refitted, ensuring that a good seal is made.
The boiler must NOT be operated if the casing is not fitted.
3 BURNER AND AIR BOX REMOVAL
Controls pod door
5. Isolate the gas supply at the service cock. Refer to Frame 8.
4 CLEANING THE FLUEWAYS
1. Remove the screw retaining the front burner support
bracket to the combustion chamber.
2. Remove the M5 pozi screw situated at the left hand,
bottom rear of the burner and pull the burner downwards
in order to disengage the retention tab. Remove burner to
a safe place for inspection and cleaning.
3. Unscrew the thermocouple connection at the gas control.
1. Remove the collector hood by undoing the front tie rod
double nuts and washers. Withdraw the rods.
2. Remove the 4 collector hood retaining screws and
washers
Collector hood
Air box
See note 1
Thermocouple
Main burner
Flue baffles
Electrode
M5 pozi screw,
see note 1
Heat exchanger
Tie rods
4. Remove the four screws retaining the air box / pilot
assembly to the vertical manifold.
5. Pull off the electrode lead at the piezo unit.
6. Unhook the clip retaining the thermocouple and H.T. lead.
Remove the air box assembly to a safe place for
inspection and cleaning.
3. Unclip and remove the flue baffles from the heat
exchanger.
4. Remove all loose deposits from the heat exchanger,
particularly between the fins, using a suitable brush or rod.
15
SERVICING
CLEANING AND ADJUSTMENT - REPLACEMENT OF PARTS
5 CLEANING THE BURNER AND PILOT ASSEMBLY
Refer to Frame 3 for illustration of the procedure below.
1. Brush off any deposits that may have fallen onto the burner
head, ensuring the flame ports are unobstructed, and
remove any debris that may have collected.
Note: Brushes with metallic bristles MUST NOT be used.
2. Remove the main burner injector and ensure that there is
no blockage or damage.
3. Refit injector using an approved jointing compound
sparingly.
4. Inspect the pilot burner, thermocouple and spark electrode;
ensure they are clear and in good condition. Check that:
(a) The pilot burner injector is not blocked or damaged
(refer Frame 11 for removal details).
6 RE-ASSEMBLY
Re-assemble in reverse order to that shown in Frames 2 to 5.
1. Refit the flue baffles and retain with the spring clips.
2. Refit the collector hood, replacing any damaged or
deteriorating gaskets. Note: Ensure rear vertical hood
retaining screws are tightened before rear horizontal
screws.
(b) The pilot burner is clean and unobstructed.
(c) The spark electrode is clean and undamaged.
(d) The spark lead is in good condition and securely
connected.
(e) The spark gap is correct. Refer Frame 7.
( f ) The thermocouple tip is not burned or cracked.
(g) The position of the thermocouple relative to the pilot
burner and main burner is correct. Refer to Frame 7.
(h) The thermocouple terminal at the gas valve is clean.
5. Re-assemble the burner / air box assembly in reverse
order. Ensure that the burner tab is correctly located.
Refer to Frame 3
Note: The pilot shield is positioned around the pilot assembly
bracket and is located by the electrode retaining nut
3. Refit the burner and air box assembly.
4. Turn on the gas supply
5. Ensure the sightglass in the boiler casing is clean and
undamaged .
6. Refit the boiler casing and tighten the three captive screws.
7. Inspect the visible casing seal for correct fit.
8. Refit control casing pod (see Frame 1 Inst.-note 2a)
9. Close the controls pod door.
7 PILOT BURNER SETTING
DETAIL OF PILOT BURNER FLAME LENGTH
1. Turn on the gas supply.
2. Light the pilot (refer to Frame 23 'Installation') and check that the pilot flame
envelopes the tip of the thermocouple and is approximately 25 mm (1 in.) long.
The pilot is factory set to maximum and no further adjustment should be necessary.
However, if the pilot flame appears small, check the pilot injector. Refer to
Frame 11.
Thermocouple
Heat Input / Setting Pressure
After each occasion of servicing, reference should be made to Table 2, which quotes
details of the rated output, with the related burner setting pressure and the heat input.
Any required adjustment should be made by using the pressure adjustment screw. .
Refer to Frame 23, 'Installation'.
Electrode
REPLACEMENT OF PARTS
8 GENERAL
9 SIGHTGLASS REPLACEMENT
When replacing any component:
1. Refer to Frame 8.
2. Unfasten the two nuts and washers holding the sightglass
assembly to the casing front panel.
3. When fixing the new assembly, make certain that the parts
are in the correct order. The frame MUST have the return
edge at the bottom.
Gasket Frame
Glass
(a) Isolate the electricity supply.
(b) Turn off the gas supply at the boiler - refer to the
illustration below.
Note: The gas cock is shown in the CLOSED position.
Gasket
(c) Remove the boiler casing (refer to Frame 2).
IMPORTANT. When work is complete the casing MUST be
correctly refitted - ensuring that a good seal is made.
The boiler MUST NOT be operated if the casing is not fitted.
16
4. Retighten the two nuts to ensure an airtight seal.
Do NOT overtighten
5. Replace the boiler casing - refer to Frame 6.
SERVICING
REPLACEMENT OF PARTS
11 PILOT BURNER REPLACEMENT
10 PIEZO UNIT REPLACEMENT
1. Refer to Frame 8.
2. Disconnect the ignition
and earth leads from
the piezo unit.
1. Refer to Frame 8.
2. Remove burner and air box assembly. Refer to Frame 3.
Pilot
3. Remove the electrode
shield
retaining nut. Remove
the pilot shield and
electrode.
Thermocouple
Control box
3. Unscrew the locking
nut at the rear of the
Piezo unit
piezo unit mounting
4. Remove the control box cover.
bracket.
5. Remove the piezo unit.
Refit the new unit and re-assemble in reverse order.
6. Replace the boiler casing - Frame 6.
7. Check the operation of the new piezo unit.
12 SUPPRESSOR REPLACEMENT
1. Refer to Frame 8.
2. Remove the screw retaining
the control box cover and
remove the cover, c/w
thermostat.
Terminal strip
3. Remove
Suppressor
the suppressor
by removing the screw
retaining the terminal block, lifting the
terminal block and unscrewing the suppressor lead
connections
4. Fit the new suppressor and re-assemble in reverse order.
Ensure that all of the electrical connections are correctly
remade - refer to 'Wiring Diagrams'.
5. Replace the boiler casing. Refer to Frame 6.
6. Check the operation of the control thermostat.
Electrode retaining
nut, see note 3
Electrode
4. Unscrew the central pilot fixing screw and lift the pilot clear
of thermocouple and pilot injector.
If required, the pilot
injector may now
be unscrewed and
the injector
checked or
replaced as
necessary.
Thermocouple
Fixing screw,
see note 4
Pilot burner
Ensure that the copper sealing
washer is fitted when replacing
the injector.
5. Replace the pilot burner and retain with the M4 screw
previously removed.
6. Replace the electrode and pilot shield - retaining both with
the electrode nut.
7. Replace the airbox assembly and ensure that the gasket is
in position.
8. Replace the burner.
9. Check the pilot burner relationship to the main burner and
spark gap. Refer to Frame 7.
10. Replace the boiler casing. Refer to Frame 6.
11. Check the pilot length. Refer to Frame 7.
12. Check the pilot operation (cross lighting, holding in time,
etc.).
13 CONTROL THERMOSTAT REPLACEMENT
1. Refer to Frame 8.
2. Unclip the thermostat capillary from the two clips
situated on the back panel
Securing
screw, see
note 3
DETAIL
OF
THERMOSTAT
POCKET
4. Pull off the thermostat knob. Remove the control box cover
retaining screw and remove the cover, complete with
thermostat.
5. Remove the two screws securing the thermostat.
Control
Control thermostat
box
Thermostat
knob
Control box cover
retaining screw
Thermostat capillary
Control box
3. Slacken the screw at the thermostat pocket
retaining screw.
6. Pull off the two electrical connections from the thermostat
head and the thermostat earth lead.
7. Fit the new thermostat and refit in reverse order. Ensure
that the phial is correctly replaced in the pocket and the
capillary routed as previously.
8. Replace the boiler casing. Refer to Frame 6.
9. Check the operation of the new thermostat. Refer to
Frame 25 'Installation.'
17
SERVICING
REPLACEMENT OF PARTS
14 OVERHEAT THERMOSTAT REPLACEMENT Fitted for sealed systems only
DETAIL OF
OVERHEAT
THERMOSTAT
POCKET
1. Refer to Frame 8.
2. Slacken the screw at the thermostat pocket and withdraw
the phial from pocket.
3. Unclip the capillary from back panel.
4. In order to gain access to the back-nut retaining the
overheat thermostat remove the control box cover by
undoing the cover retaining screw (refer to Frame 12).
Remove the back-nut.
Control box
5. Remove thermostat from control box and
Overheat
thermostat
capillary
pull off the two yellow leads.
6. Re-assemble the new thermostat in reverse order
(polarity immaterial), ensuring that the alignment peg
on the thermostat sits in the small hole adjacent to the
main fixing hole.
7. Replace the control box cover.
8. Replace the boiler casing. Refer to Frame 6
Overheat
thermostat
15 SPARK ELECTRODE AND LEAD
REPLACEMENT
DETAIL OF PILOT BURNER
1. Refer to Frame 8.
Thermocouple
2. Remove burner and
air box assembly
Pilot
Refer Frame 3,
shield
3. Remove the electrode
retaining nut.
4. Remove the pilot shield.
5. Remove the spark
electrode and
integral lead.
6. Fit the new electrode.
Spark electrode
and lead in reverse order,
taking care to replace the pilot shield.
7. Check the spark gap. Refer to Frame 7.
8. Refit the burner.
9. Replace the boiler casing. Refer to Frame 6.
10. Check the pilot ignition.
Yellow leads, see note 5
16 THERMOCOUPLE REPLACEMENT
1. Refer to Frame 8.
2. Remove the burner and air box assembly. Refer to
Frame 3.
3. Remove the electrode retaining nut. Refer to Frame 11.
4. Remove the pilot shield and electrode
5. Unscrew the central pilot fixing screw. Lift the pilot clear of
the thermocouple and pilot injector. Refer to Frame 11.
6. Withdraw the thermocouple and fit the replacement.
Re-assemble in reverse order, ensuring that no sharp
bends are used on the thermocouple and the pilot shield is
refitted.
7. Replace the boiler casing. Refer to Frame 6.
8. Check the operation of the thermocouple.
17 MAIN BURNER AND MAIN BURNER INJECTOR REPLACEMENT
1. Refer to Frame 8.
Air box
2. Remove the screw retaining the front of the burner
assembly
support bracket to the combustion chamber.
3. Remove the M5 pozi screw and washer, situated at
the left hand bottom rear of the burner. Pull the
burner downwards to disengage the retention tab
and remove the burner.
4. At this stage the main burner injector can be
removed, checked, cleaned or replaced as required.
Ensure that an approved jointing compound is used
sparingly.
5. Fit new burner, ensuring that the retention tab is
correctly located in the air box slot.
6. Refit the M5 retaining screw and washer.
Pilot burner
7. Refit the front burner support bracket.
8. Refit boiler casing. Refer to Frame 6.
9. Check the burner for cross-lighting and flame
Main burner
injector
stability.
18
DETAIL OF
LOCATION TAB
Main burner
M5 pozi screw and
washer, see note 2
SERVICING
REPLACEMENT OF PARTS
18 GAS CONTROL VALVE REPLACEMENT
1.
2.
3.
4.
Refer to Frame 8.
Remove the burner and air box assembly. Refer to Frame 3.
Turn off the gas supply at the service cock.
Remove the control box cover fixing screw and remove the
cover.
5. Pull off the two electrical connections and the earth
connection at the boiler thermostat.
Boiler
thermostat
Control
box
6. Remove the control
box fixing screw, situated
see note 4
behind the suppressor.
7. Withdraw and suspend the control box. Pull off the gas
valve solenoid connections and disconnect the earth
connection at the solenoid. Pull off the 2 connections at
the piezo generator.
8. Withdraw the thermostat phial from its pocket (refer to
Frame 13).
9. Remove the four M4 extended screws retaining the gas
service cock to the gas control.
19 COMBUSTION CHAMBER
INSULATION REPLACEMENT
1. Refer to Frame 8.
2. Remove the burner and air box
Combustion
chamber
Note: Refer also to Frame 25 'Exploded Views' for
illustration of the procedure detailed below.
Manifold, see note 10
see note 7
Gas control
valve
Gas cock,
see note 3
Manifold extension,
see note 12
10. Whilst supporting the gas control valve, remove the two
screws retaining the manifold to the back panel.
11. Remove the gas control / manifold assembly.
12. Remove the four screws retaining the manifold extension
to the gas control and fit new gas control, ensuring that:
(a) The new gas control is fitted the correct way round; an
arrow is engraved on the back, indicating the direction
of gas flow.
(b) The sealing gasket is correctly fitted.
13. Re-assemble in reverse order. Note: Do NOT overtighten
the four gas cock retaining screws.
14. Replace the burner / air box assembly.
15. Replace the boiler casing. Refer to Frame 6.
16. Check the gas valve operation.
DETAIL OF BOILER
COMBUSTION CHAMBER
Insulation panels
assembly. Refer to Frame 3.
3. Remove the two front tie rods.
8. Fit the new side panels and retain
4. Remove the two side panel retaining brackets.
with the brackets and screws
5. Remove the side insulation panels.
previously removed.
6. Remove the front and rear insulation panels.
7. Fit the new front and rear insulation panels.
20 HEAT EXCHANGER REPLACEMENT
Note: Refer to Frame 24 of 'Exploded Views' for illustration of
the procedure detailed below.
1. Refer to Frame 8.
2. Remove the burner and air box assembly. Refer to
Frame 3.
3. Drain the system .
4. Disconnect the water flow and return connections. If
compression fittings are used, cut the pipes both above
and below the fittings in order to allow the heat exchanger
assembly to be removed.
Remove the heat exchanger drain plug and drain the
residual water into a suitable receptacle
5. Remove the collector hood. Refer to Frame 4.
6. Remove the 4 screws retaining the flue duct and remove
the duct.
7. Remove the combustion chamber by unscrewing the nuts
retaining the side tie rods.
8. Remove the four extended nuts retaining the gas service
cock to the gas control valve.
9. Remove the control box cover and control box. Refer to
9. Refit the front tie rods.
10. Re-assemble the rest of the
appliance in reverse order.
Frame 18. Unclip the thermostat capillary and remove the
phial from the pocket. Refer to Frame 13.
10. Remove the Programmer Kit (if fitted).
11. Remove the two screws retaining the manifold / gas control
valve assembly to the back panel and remove the assembly.
12. Slacken 3 turns only the four screws retaining the heat
exchanger / inter-panel assembly.
13. Lift the heat exchanger / inter-panel assembly upwards and
forwards to disengage the keyhole fixings. Pull the assembly
downwards to clear the water pipes from the back panel.
14. Remove the four rubber grommets from the top of the back
panel, to facilitate the fitting of the new heat exchanger.
15. Fit the new heat exchanger assembly, complete with its 4
pipe connections and hang it on the 4 keyhole slots and
screws. Retighten the 4 screws.
16. Replace the 4 rubber grommets in order to seal the gap
between the water pipes and the back panel.
17. Re-assemble in reverse order. Note: Do NOT overtighten
the four gas cock retaining screws.
18. Remake all water connections, ensuring that the
compression fittings ( if used ) are correctly refitted.
19. Fully test all functions, including water and gas soundness.
19
SERVICING
REPLACEMENT OF PARTS
22 GAS VALVE SOLENOID REPLACEMENT
21 CASING SEAL REPLACEMENT
1. Refer to Frame 8.
2. Remove the fixing screw retaining the control box cover
and remove the cover.
1. Refer to Frame 8.
INNER VIEW OF BOILER CASING
DETAIL OF CONTROL BOX
Control box
cover
Control box
retaining screw,
see note 3.
2. Remove the old seal from the casing surround.
3. Thoroughly clean the casing surfaces and fit the adhesive
seals.
4. Replace the boiler casing. Refer to Frame 6.
see note 2
3. Unscrew the control box retaining screw and remove the
box from the gas control valve.
4. Pull off the electrical connections at the solenoid and
remove the earth wire connection at the solenoid bracket
5. Remove and replace the solenoid coil as shown below.
DETAIL OF GAS CONTROL VALVE
Spring clip
23 PROGRAMMER REPLACEMENT
(if fitted)
1. Refer to Frame 8.
2. Remove the boiler control box cover and release the
terminal strip fixing screw.
connections from the
Disconnect the 'L', 'N' and
terminal strip and release the cable clamp.
DETAIL OF BOILER CONTROL BOX
Solenoid bracket
Terminal strip fixing
screw, see note 2.
6. Re-assemble in
reverse order.
Solenoid
7. Replace the
boiler casing.
Refer to Frame 6.
8. Check the function of the gas control
valve
Control box
cover
Cable clamp
3. Remove the 2 screws retaining the programmer mounting
bracket to the back panel mounting bracket.
4. Pull the programmer mounting bracket downward and
forward in order to disengage the terminal strip connection.
5. Remove the 2 screws fastening the stainless steel lid to
the programmer mounting bracket and remove the lid.
6. Slide the programmer upwards in order to clear the
mounting bracket.
7. Remove the strain relief bush retaining the control box
feed cable and remove the earth lead from the earth post.
8. Remove the 3 screws retaining the terminal strip to the
programmer mounting bracket.
9. Remove the programmer, complete with its terminal strip
and wiring harness.
10. Fit the new programmer, terminal strip and wiring harness
in reverse order.
11. Set the programmer to the desired programme and test its
functions.
20
Control box
bracket
DETAIL OF PROGRAMMER
Back panel
mounting
bracket
Programmer
mounting
bracket
Terminal strip,
see note 8.
See note 3
See note 5
Stainless steel lid,
see note 5
Programmer
SERVICING
EXPLODED VIEWS
24 BOILER ASSEMBLY - Exploded view
LEGEND (Numbers up to 39 relate to the B.G. spares list)
1.
2.
4.
5.
6.
7.
Heat exchanger
Flue baffles
Pumped flow pipe
Gravity flow pipe
Pumped return pipe
Gravity return pipe
8. Collector hood
9. Combustion chamber
15. Main burner
22. Igniter button
25. Control box (mounted on
the gas control valve)
26.
28.
32.
33.
35.
37.
Boiler thermostat
Thermostat pocket
Wall mounting plate
Back panel
Balanced flue terminal
Programmer (optional)
39.
100.
101.
102.
103.
Overheat thermostat (if
fitted)
Boiler flue duct.
Rubber sealing grommets
Interpanel
Boiler drain point
25 BURNER AND CONTROLS
- Exploded view
LEGEND (Numbers up to 39 relate to B.G. spares list)
12. Manifold extension
19. Pilot burner shield
13. Burner manifold
20. Gas control valve.
14. Air box & pilot burner assy.
21. Gas service cock
15. Main burner
22. Piezo unit
16. Main burner injector
25. Control box
27
27.
39.
104.
105.
106.
108.
Boiler thermostat knob
Overheat thermostat (if fitted)
Extended nuts
'O' ring
Sealing gasket
Control box mounting bracket
21
SERVICING
FAULT FINDING
Before attempting any electrical fault finding ALWAYS carry out
the preliminary electrical system checks as detailed in the
Instructions for the British Gas Multimeter, or similar test
meter.
Detailed instructions on the cleaning and adjustment or
placement of faulty components are contained in the 'Servicing'
section, of this publication.
26 PILOT WILL NOT LIGHT
Is there a spark at the ignition electrode ?
NO
YES
YES
Is there gas at the pilot burner when the gas valve
button is pressed ?
NO
YES
Light the pilot burner with a match.
Confirm satisfactory ignition, using the piezo
unit
Check the gap between the electrode and the pilot
burner; 3-4 mm. Refer to Frame 7.
Check the H/T lead and electrode are undamaged and
the connections are NOT close to earthed metalwork.
Check the piezo unit is operative - by holding an
earthed screwdriver approximately 3 mm from the H/T
output terminal (with the ignition lead removed) and by
operating the button.
Is there a spark across the gap ?
YES
NO
Allow time to purge any air present.
Check the following; the gas valve button is being
pressed fully in; there is gas pressure at the boiler
inlet; the boiler union gas cock is open; the pilot
jet is not blocked; the overheat thermostat (it fitted)
requires resetting.
NO
Faulty piezo unit - replace
27 PILOT WILL NOT STAY LIT WHEN THE GAS VALVE BUTTON IS RELEASED
Is the connection between the thermocouple and the gas
valve clean and tight ?
NO
Clean the contracts and reconnect securely
YES
Is the pilot flame the correct size (refer to Frame 7) ?
NO
Check the pilot injector. Refer to Frame 11
YES
Check thermocouple output (8-15 mV closed
circuit).Replace thermocouple if output is outside the
stated range. Reference may be made to the
British Gas Multimeter Instruction Book.
Does the pilot now stay alight ?
28 PILOT LIT BUT NO MAINS GAS
Is there a supply voltage at the
input to the control box?
NO
NO
YES
Set any CH and HW controls to the 'Continuous'
position. Is there a supply voltage between CH and N,
also between HW and N? Expect 240 V +/- 10%
NO
Replace the gas valve.
Check the supply voltage, e.g., by using a Multimeter,
set on the 300 V AC range, between the L and N
terminals. Expect 240 V +/- 10%. If there is no supply
then check the fuse in the plug or other supply point.
If there is no supply, check controls. Reference may be
made to the British Gas Multimeter Instruction Book.
YES
Have you confirmed that the system controls are 'Calling
for Heat' ?
NO
YES
Is there a supply voltage between the gas valve
terminals ? Expect 240 V +/- 10%.
YES
Does the main burner light ?
YES
NO
YE
Check the settings of the room thermostat and the
cylinder thermostat. Check the control system.
Reference may be made to the British Gas Multimeter
Instruction Book.
Check the boiler thermostat. Reference may be made
to the British Gas Multimeter Instruction Book.
S
NO
Faulty gas valve - check. Reference may be made to
the British Gas Multimeter Instruction Book.
YES
After any faults have been corrected, return all thermostatic and other controls to the previously noted settings.
22
SERVICING
SHORT LIST OF PARTS
Ideal Classic RS 30, RS 40, RS 50 and RS 60 Gas boilers
The following list comprises parts commonly required as
replacement components due to damage, expendability, or
such that their failure or absence is likely to affect safety or
performance.
When ordering spares please quote:1.
2.
3.
4.
5.
The list is extracted from the British Gas List of Parts, which
contains all available spare parts.
Details of the British Gas Lists are held by gas regions,
Caradon Ideal distributors and merchants.
Key No.
G.C. Part No.
11
319 493
No. Off
Maker's Part No.
Sightglass assembly kit
1
160 079 333
386 138
386 137
386 136
Main burner
AEROMATIC No. AC 19/123 263; RS 30
AEROMATIC No. AC 19/123 262; RS 40 & RS 50
AEROMATIC No. AC 19/123 261; RS 60
1
1
1
199 614 084
199 624 084
199 644 084
398 042
398 048
398 054
398 058
Main burner injector
BRAY Cat. 10 - size 750;
BRAY Cat. 10 - size 1050;
BRAY Cat. 10 - size 1350;
BRAY Cat. 10 - size 1600;
1
1
1
1
199 616 060
199 626 060
199 636 060
199 046 061
Pilot burner injector
HONEYWELL 45900421 - 001 (Stamped 38/36A)
1
589 624 084
Pilot burner
HONEYWELL Q 359 A 1124
1
589 614 085
Gas control valve
HONEYWELL V 4700 E 1072, 240 V
1
586 611 900
15
16
17
18
20
Boiler model
Appliance G.C. number
Description
Maker's part no.
Quantity
386 131
308 347
308 348
Description
RS 30
RS 40
RS 50
RS 60
22
395 705
Piezo unit, VERNITRON 60080
1
589 830 086
23
308 317
Ignition electrode. VERNITRON No. 1414
1
589 614 088
24
390 131
Thermocouple, HONEYWELL Q 309 A 2846, 18 in. lg.
1
586 811 720
25
308 319
Control box, including thermostat, thermostat knob and
suppressor assembly
1
589 610 065
26
386 139
Thermostat, RANCO K 36 - L 1016 with 48 in. capillary
1
589 610 051
27
308 012
Thermostat knob
1
589 070 052
29
384 689
Suppressor assembly
1
589 040 030
30
308 322
Boiler casing assembly - white stove enamel, with
sightglass and foil insulation
1
199 614 030
Controls casing door - white plastic, with Lighting
Instructions
1
199 610 089
31
308 323
34
308 329
Boiler sealing pack
1
199 610 094
39
386 140
Overheat thermostat, RANCO LM 7 - P 9054
(sealed systems only)
1
589 610 074
23
SERVICING
29 SHORT PARTS
SHORT LIST OF PARTS - COMPONENT DIAGRAMS
30 BOILER CASING ASSEMBLY
30
31
THIS SYMBOL IS YOUR
ASSURANCE OF QUALITY
These appliances are designed for use with Natural Gas
only. They have been tested and conform with the
provisions of BS. 6332 & BS. 5258.
Products bearing this kitemark are made to a safety and
performance standard under a stringent scheme of
supervision and control monitored by the British
Standards Institute.
CARADON IDEAL Ltd. pursues a policy of continuing
improvement in the design and performance of its products.
The right is therefore reserved to vary specification without
notice.
CARADON IDEAL Ltd,
P.O. Box 103, National Avenue,
Kingston upon Hull,
North Humberside. HU5 4JN.
Telephone: 01482 492 251
Fax: 01482 448 858.
Registration No. London 322 137.
Registered Office; National Avenue, Kingston upon Hull,
North Humberside, HU5 4JN.
A subsidiary of Caradon p.l.c
Customer Care & Technical Support
Please use the following numbers for speedy assistance.
Spares. ........................................ Tel: 01482 498 643
Customer Care &
Technical Support. ..................... Tel: 01482 498 610
August 1994 116 771 A06
................................................... Fax: 01482 498 666
Publications/Literature. ............. Tel: 01482 498 467
Printed in England