ELECTRONIC IGNITION - AUTOMATIC MODULATING BOILER
FANNED COMBI
RSF 82E - RSF 82ET
WITHOUT TIMER
RSF 82E G.C. N
NATURAL GAS (G 20)
Tested, certified and
service listed
Listed by The United Kingdom Water
Fitting Byelaws Scheme
0
47 581 18
WITH TIMER
RSF 82ET G.C. N0 47 581 04
NATURAL GAS (G 20)
INSTALLATION AND SERVICING INSTRUCTIONS
TO BE LEFT WITH USER
Technical and illustrative data are not binding and can be modified without prior notice.
The descriptions and illustrations in the present booklet are for guideline purposes only.
RAVENHEAT MANUFACTURING LTD., CHARTISTS WAY, MORLEY, LEEDS, LS27 9ET. - TELEPHONE (0113) 252 7007
ELECTRONIC IGNITION - AUTOMATIC MODULATING BOILER.
FOR CENTRAL HEATING AND DOMESTIC HOT WATER
This new high efficient turbo-modulating boiler is designed to meet domestic hot water and central heat-
ing requirements at super high efficiency, unheard of only a few years ago.
POSITION
The appliance is extremely versatile as it can be fitted in almost any room. The appliance is room sealed,
there is no contact between combustion chamber and living accomodation. This guarantees maximum safety
and efficiency. Indeed, our depression/combustion front cover has been designed to fit achieving maximum
air tight seal using screw down fasteners at 15 cm. This should not hinder service of the appliance, but does
ensure maximum efficiency and safety - something which Ravenheat take great pride in.
Each boiler has been designed and manufactured in our modern plant to exacting IS0 9001 discipline,
all boilers carry full CE marking of approval. Technical sales and commercial service are available
throughout the UK. This product is guaranteed by Ravenheat Manufacturing, Chartist Way, Morley,
LEEDS, LS27 9ET. Telephone No 0113 2527007.
.
BASIC COMPONENTS - (See figure 1)
Guarantee is a full 12 months from date of purchase providing the appliance has been fitted in accor-
dance with these instructions and relevant codes of practice.
MAJOR COMPONENTS
Gas valve with flame modulator.
Variable head pump suitable for any type of central heating system.
Main burner with flame stabiliser designed to operate under all thermal conditions.
Double parallel heat exchanger which, for domestic hot water uses, the “countercurrent”
system, offering high thermal exchange and durability.
High reliability diverter valve with ethylene propylene diaphragm permitting primary fluid circulation in the boiler during D.H.W. supply. This gives maximum heat exchange, improved efficiency and exceptionally silent operation.
Built in frost protection.
Printed circuit board designed to connect to room stat and/or timer/frost stat.
Aesthetically pleasing panels and controls.
On/Off ball valves for shutting off gas central heating and domestic hot water circuits.
Safety relief valve (for safety discharge).
Programmable 7 day module with digital display (optional model).
All front panel controls not often used have been hidden. This achieves simplicity of operation with easy
to clean panels.
COSHH - CONTROL OF SUBSTANCES HARMFULTO HEALTH
IMPORTANT
This appliance contains materials that are indicated below.
It is the Users/Installers responsibility to ensure that the necessary personal protective clothing is worn
when handling, where applicable, the pertinent parts that contain any materials that could be interpreted
as being injurious to health and safety.
WARNING When installing the appliance, care should be taken to avoid any possibility of injury when
handling sheet metal parts,
GENERAL INFORMATION:
GLUES AND SEALANTS - exercise caution - if these are still in liquid form.
INSULATION PADS, CERAMIC FIBRE - may be harmful if inhaled, may be irritating to skin, eyes, nose
and throat.
When handling keep dust generation to a minimum, avoid inhaling and contact with skin or eyes.
When disposing of the product keep dust generation to a minimum and ensure that parts are securely
wrapped.
When servicing avoid inhalation by using a vacuum cleaner or in conjunction with other tools,
After handling wash hands and other exposed parts.
RAVENHEAT use only high quality material for production of this product, in an effort to protect the envi-
ronment components should be re-cycled.
3
SECTIONS:
1
2
3
4
5.
6
7
8
9
10
11’
TABLE OF CONTENTS
INTRODUCTION
DESIGN PRINCIPLES AND
OPERATING SEQUENCE
TECHNICAL DATA
GENERAL REQUIREMENTS
INSTALLATION
COMMISSIONING
SERVICING INSTRUCTIONS
FAULT FINDING
ELECTRICAL SYSTEM DIAGRAM
EXPLODED PARTS DIAGRAM
LIST OF SPARE PARTS
PAGE:
6
6
8-9-10
11
16
25
30
43
45
.
47
48
GENERAL
LAYOUT
KEY
1 - Heat exchanger
3 - Burner
4 - Pilot burner
7 - Ignition board
9 - Ignition electrode
11 - Frame
12 - Modulating gas valve
15 - Heating control
16 - Hot water control
4
17 - DHW sensor 33 - Main switch
18 -Water pressure switch (heating circuit)
22 - Overheat cut off thermostat
23 - Safety relief systems
24 -Three way valve
26 - Auto air vent valve
28 -Air pressure switch
29 - Circulation pump
34 - C.H. Sensor
36 - Fan
37 - Expansion tank
38 - Sealed chamber
45 - Combustion chamber
50 - Flue gas exhaust hood
105 - Timer
30 -Water pressure gauge 106 -Air restriction ring
OPERATING SCHEME
Fig
.2
KEY
1 - Heat exchanger
2 - Heat exchanger for D.H.W. water
3 - Burner
4-
Pilot burner
5 - Air restriction ring
Electronic ignition
79-
Ignition electrode
12- Modulating gas valve
Heating control
15-
16 - Hot water control
18 - Overheat cut-off thermostat
20 - Gas service cock
21 - Compression ball valves
23 Safety relief system
24 -Three way valve
25 - Flow regulator
26 - Auto air vent valve
27 - D.H.W. Pressure switch giving priority 62 -Terminal
28 - Air pressure switch
29 - Circulating pump
30 -Water pressure gauge
36-Fan
37 - Expansion tank
38 - Sealed chamber
60 -Air intake duct
61 - Flue duct
5
SECTION 1
1.1
INTRODUCTION
The Ravenheat boiler is for the use of
central and domestic hot water combined in
one unit.
It is fitted with an automatic domestic hot
water priority valve.
A (winter/summer) selector
switch is fitted to the left hand side of control
panel. With the only (summer) position
being for domestic hot water.
position being for central heating
with domestic hot water priority. The boiler
is equipped with a front cover which can be
removed for servicing. The data badge with
technical data is placed on the lower left
hand side of the frame.
2.2.6
2.2.7
switched off, the pressure switch returning
to its rest mode.
Central heating mode
If the switch is positioned on
with a
demand for heat to supply radiators, etc.
With heating circuit fully charged so as to
operate the low water sensor device the
boiler will start in the same way as domestic
hot water mode but with slightly differing
time delay in that it will start on minimum
and remain at this level for about 1 minute,
after which the flame will lift to its maximum
setting as governed by a potentiometer
range rates the heating circuit between
maximum and minimum power.
1.2
SECTlON 2
2.1
2.2
2.2.1
2.2.2
2.2.3
2.2.4
Fig. 1 Illustrates the general layout of
components.
Fig. 2 Illustrates the operating principles
described in section 2.
DESCRIPTION OF CONTROL SYSTEM
AND SEQUENCE OF OPERATION
Domestic hot water mode
When the appliance is in rest mode with the
mains neon switch on. Switch the summer/winter switch in the position, making sure the heating circuit is charged with
water (above 1 bar). When the domestic hot
water tap is turned on, the boiler will function
in the following sequence:
The pump starts.
The control board sensors.
The fan operates via the pressure switch
and sends a signal back to the ignition board
that the fan is running at maximum speed.
The spark ignition system is powered which
in turn commences the spark igniter to
operate and light the burner.
At this point the ignition board opens the first
step of the gas valve to light the pilot/burner.
When the electrode/sensor senses the
signal from the pilot/burner, it opens the
second stage of the gas valve via the ignition
board on minimum power. Upon the second
valve opening the spark igniter stops.
From the minimum gas rate setting the
boiler
increases to
the
maximum
permissible pressure over a period of 3 to 4
seconds and will remain at its maximum
required power until its maximum regulated
temperature.
2.3
2.3.1
2.3.2
2.3.3
2.3.4
2.3.5
2.3.6
On the control panel are mounted two
potentiometers (thermostats) these control
the temperature. One is for domestic hot
water and the other for heating.
The boiler is fitted with an anti-cycling
device on the control board. This delays the
boiler from re-firing over a 2.5 minute period
when in heating mode. The domestic hot
water will always take priority and is
unaffected by the anti-cycling device.
GENERAL FUNCTION
Central Heating Mode
A potentiometer is installed on the electric
circuit board this permits regulation of the
boiler to partial heating requirements,
between the factory setting.
Air is drawn by the fan for combustion.
The fan also forces exhaust gas through the
flue to the outside, this creates a lesser
pressure in the sealed combustion chamber,
thus sucking in combustion air, through the
inlet duct.
The boiler water temperature is automatical-
ly controlled by a built in thermostat. .
Interior space temperature is set by the
room thermostat to be installed in the heating system. The boiler already carries con-
nection terminals for this thermostat, as well
as for a timeclock. The burner will continue
to operate until it is stopped by the timer or
one of the thermostats.
When the internal C.H. temperature sensor
intervene the main burner shuts down. The
fan stops but the pump continues to operate.
2.2.5
6
When the domestic hot water tap is closed
the diverter valve goes back into rest mode,
the main burner is shut down along with the
pilot/burner. The pump and fan are also
2.3.7
When the room thermostats intervene the
main burner shuts down. The fan stops and
the pump turns off.
2.4
2.4.1
2.4.2
2.4.3
Domestic hot water mode 2.4.4
The heat exchanger in the D.H.W. circuit is
built into the main heat exchanger, and
domestic water is heated by converting the
water in the central heating circuit. The
transference of heat is very high because
the two fluids move in a counter direction
flow to each other.
Switch 33 in the (winter) position.
When a hot water tap is turned on a
diaphragm diverter valve excludes the central heating circuit the boiler automatically
modulates to maintain the domestic hot
water at a constant temperature.
Water temperature can be regulated using
the D.H.W. thermostat located on the front
control panel.
When domestic hot water is being drawn the
main burner and pump perform as they do
during central heating except that the burner
is commanded by the D.H.W. thermostat.
2.4.5
3.1
When D.H.W. is no longer called for the boiler automatically returns to the central heating mode.
Switch 33 in the (summer) position. The
boiler functions like an automatic gas hot
water heater. When D.H.W. is no longer
required the main burner, fan and pump
immediately turn off.
This also takes place when switch 33 is on
(winter) if there is no demand for
heat to the central heating system or until
the room thermostat/time clock demands for
heat to the central heating circuit.
SAFETY DEVICE
In both central heating and domestic hot
water mode safe operating is ensured by:
- A differential pressure switch which shuts
off the main burner if the fan stops or the flue
or combustion air intake duct is obstructed.
OVERALL DIMENSION
Fig. 3
3.1.2
An overheat cut off thermostat set slightly
higher than the high limit thermostat acts to
turn off the burner to resetable “lockout”
(Fig. 50 item 3).
3.1.3
3.2.1
A safety valve fitted on the
central heating circuit set at
43 psi (3 bar).
A heating circuit (low water)
pressure switch is set at 0.4
bar.
SECTION
3 TECHNICAL DATA
TABLE 1
HEAT INPUT NET
NOMINAL
HEAT OUTPUT
NOMINAL
GAS RATE max
AFTER 10 minutes
INLET PRESSURE
BURNER PRESSURE
GAS CONTROL VALVE
MAIN BURNER
MAIN BURNER INJECTORS
PILOT BURNER
NATURAL GAS (G 20) I 2H
max
mid
min
max
mid
min
mid
min
20 mbar
ma*
mid
min
SIT
POLIDORO MOD/NP
N. 13X1.35
POLIDORO PA525F
26.1 kW
18.9 kW
13.0 kW
23.6 kW
16.6 kW
10.3 kW
3
/h
2.6 m
3
/h
2.1 m
1.3 m3/h
(8.0 in wg.)
8.1 mbar
4.1 mbar
1.5 mbar
837 TANDEM
.
(89,100 Btu/h)
(64,500 Btu/h)
(44,400 Btu/h)
(80,500 Btu/h)
(56,700 Btu/h)
(35,200 Btu/h)
(91.8 ft
(74.1 ft
(45.9 ft3/h )
(3.2 in wg.)
(1.6 in wg.)
(0.6 in wg.)
PILOT INJECTOR 0.27x2 HOLES
ELECTRICAL SUPPLY
230V-50HZ
POWER CONSUMPTION 160W
EXTERNAL FUSE RATING 3A
INTERNAL FUSE RATING
DRY WEIGHT
WATER CONTENT D.H.W.
WAT
ER CONTENT C.H.
315 mA - 2A - 4A (20mm to BS4265)
48 kg (106 Lbs\
0.5 Lts. (0.9 pints)
3.0 Lts. (5.3 pints)
NECTION RC 112"GAS SUPPLY CON
FLOW CONNECTION C.H.
RETURN CONNECTION C.H.
INLET CONNECTION D.H.W.
OUTLET CONNECTION D.H.W.
22 mm
22 mm
15mm
15mm
compression isolating valve
compression isolating valve
compression isolating valve
copper pipe
MAXIMUM PERMISSIBLE COLD WATER CAPACITY WITHOUT ADDITIONAL EXPANSION VESSEL
110 LITRES
SAFETY DISCHARGE PIPE 15mm
copper pipe
SEALED WATER SYSTEM C.H. SYSTEM
MAX PRESSURE 2.5 bar (35.6 p.s.i.)
MINIMUM WORKING PRESSURE 0.5 bar, (7.35 p.s.i.)
8 LITRES EXPANSION VESSEL PRE-CHARGE-PRESSURE 0.5 bar (7.35 p.s.i.)
CENTRAL HEATING OPERATING TEMPERATURE MAX 85
MIN 45
DESIGN FLOW RATE 1013 I/h (223 gals) 20
o
C
o
C RISE
o
C
MINIMUM FLOW RATE C.H./503 Lts/h (111 gals/h)
D.H.W. FLOW RATE 30oC rise 11.3 l/min (2.5 gals/min)
D.H.W. FLOW RATE 35
D.H.W. FLOW RATE 40oC rise
D.H.W.TEMPERATURE
o
C rise
9.7 l/min (2.1 gals/min)
8.5 I/min (1.9 gals/min) 10 oC inlet temperature
max 65 oC
min 35°C
D.H.W. PRESSURE
max 10 bar (147 p.s.i.)
min 0.8 bar (11.8 p.s.i.)
To obtain 95% heat input 1.0 bar (14.5 psi.)
D.H.W. MINIMUM FLOW RATE 3 I/m (0.66 gals/min)
3
/h)
3
/h)
FLUE OUTLET NOM. DIA. 100 m/m specially supplied with boilers
DESTINATION: GB
FLUE TYPE - C 12- C
32
CATEGORY I 2H
NOX 2
SECTION 4 GENERAL REQUIREMENTS
4.0
4.1
SAFETY
Gas Safely (Installation and USE) Regulations,
1994, and amendments 1996.
It is law that all gas appliances are installed and serviced by a Corgi registered installer (identified by
in accordance with the above regulations. Failure to
install appliances correctly could lead to
tion. It is in your own interest, and that of safety,
ensure the law is complied with. Check the boiler
and flue is the correct type for installation.
The installation of the boiler MUST also be in accordance with the latest I.E.E (BS 7671) Wiring
Regulations, 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.
GENERAL INFORMATION
Both the user and the manufacturer rely heavily on
the installer, whose job it is to install the combination
boiler and connect it to a correctly designed heating
system. Acquaint yourself with the British Standards
concerning installation requirement. If you need
advice on any points your Ravenheat Technical
Services Office would be pleased to help. It is rec-
ommended that tools suitable for brass fittings are
used, and have a capability to accommodate hexa-
gon sizes up to 50 mms.
CODES OF PRACTICE/Fief: Documents
Detailed recommendations are contained in the following British Standard Codes of Practice:
prosecu-
to
4.2
4.2.1
NOTE: The Ravenheat boiler has been tested and
examined by BG Technology Certification Services
and is certified to comply with the relevant requirements of ES 5258 Part 1 1986 BS 6332 Part 1 1983
and the relevant BGK3.G. 1 agreements, also tests
based on BS 5286 Part 1,
If in doubt on any point please consult Ravenheat
Manufacturing Ltd.
LOCATION OF BOILER
Siting of Ravenheat RSF 82E Combi Boiler must be
as follows. The position of installation should be
within the building, unless otherwise protected by
suitable enclosure.
Adequate space for installation, servicing and aircirculation around boiler must be allowed for.
The Ravenheat RSF 82E Combi Boiler must be fitted on a flat and vertical wall capable of adequately
supporting the weight of the boiler and any ancillary
equipment.
The appliance may be installed on a combustible
wall subject to the requirements of the Local
Authority and Building Regulations.
CLEARANCES AROUNDTHE APPLIANCE
The following minimum free spaces, required for
installation inspection and servicing, must be left
around the boiler
18 inches (450 mm) in front
5 inches (120 mm) above
6 inches (150 mm) below
3 inches (75 mm) on each side
1 inch (25 mm) in front when installed in a cupboard.
BS. 6891
BS. 6798
BS. 5449
BS. 5546
BS. 544O:1
BS. 5440:2
Health &Safety Document No. 635
The Electricity at Work Regulations, 1989.
The manufacturer’s notes must NOT be taken, in
any way, as overriding statutory obligations.
IMPORTANT. These appliances are CE certificated
for safety and performance. It is, therefore, important
that no external control devices e.g. flue dampers,
economisers etc., are directly connected to this
appliance unless covered by these Installation and
Servicing Instructions or as otherwise recommended by Ravenheat in writing. If in doubt please
enquire.
Any direct connection of a control device not
approved by Ravenheat could invalidate the certifi-
cation and the normal appliance warranty. It could
also infringe the Gas Safety regulations and the
above regulations.
Low pressure installation pipes.
Installation of gas fired hot water
boilers of rated input not exceeding
60 kW.
Forced circulation hot water systems.
Installation of gas hot water supplies
domestic purposes (2nd Family
Gases).
Flues (for gas appliances of rated
input not exceeding 60 kW).
Ventilation (for gas appliances of
rated input not exceeding 60 kW).
IMPORTANT NOTICE
If the combination 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 supplier.The combination boiler may be installed in any
room or internal space, although particular attention
is drawn to the requirements of the current I.E.E.
Wiring Regulations and in Scotland the electrical
provisions of the Building Regulations applicable in
Scotland, with respect to the installation of the combination 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, any electrical
switch or appliance control utilising mains electricity
should be so situated that it cannot be touched by a
person using a bath or shower.
A compartment used to enclose the combination
boiler MUST be designed and constructed specifically for this purpose. An existing cupboard, or compartment, may be used provided it is modified
accordingly. Samples of the RSF 82E combination
boiler have been examined by B.G. Technology
Notified Body, and is certified to comply with the
essential requirements of the Gas Appliance
Directive 90/396/EEC, the Low Voltage Directive
72/23/EEC and shows compliance with the Electro
Magnetic Compatibility Directive 89/336/EEC and
are therefore permitted to carry the CE Mark.
The appliance has been tested and approved by the
WRc as meeting the requirements of G3 and L of the
Building
Approved Products.
regulations and water Bylaws Scheme -
9
4.5
4.5.1
GAS SUPPLY
A gas meter is connected to the service pipe
by the Local Gas Supplier or a contractor.
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 for all appliances it
serves. Installation pipes should be fitted in
accordance with BS 6891. Pipework from
the meter to the boiler must be of adequate
size (22 mm) min. To within at least 3 metre
of the boiler (15 mm) min. can then be used
for remaining pipe work to the appliance. A
smaller size than the boiler inlet gas con-
nection should not be used. The complete
installation must be tested for soundness as
described in the above Code.
N.B. if the gas supply for the boiler serves
other appliances ensure an adequate supply is available both to the boiler and the
other appliances when they are in use at the
same time.
IMPORTANT: The following notes are
intended for general guidance.
The boiler MUST be installed so that the terminal is exposed to external air.
It is important that the position of the terminal allows the free passage of air across it at
all times.
Minimum acceptable spacing from the terminal to obstructions and ventilation opening are specified in Fig. 6.
Note positions: Due to the terminal design,
installation is possible with clearances less
than those specified in BS 5440, Part 1.
Fig. 6
4.6
4.6.1
FLUE SYSTEM
The terminal should be located where dis-
persal of combustion products is not impeded and with due regard for the damage or
discoloration that might occur to building
products in the vicinity (see fig. 6).
The terminal must not be located in a place
where it is likely to cause a nuisance.
The terminal must not be closer than 25
mm. (1 in) to any combustible material. For
protection of combustibles, refer to BS
5440.1.
Where a flue terminal ‘is installed less than
1000 mm. from a plastic. or painted gutter: or
500 mm from painted eaves, an aluminium
shield 1000 mm. long, should be fitted to the
underside of the gutter or painted surface.
Pluming will occur at the terminal so, where
possible, terminal positions which could
cause a nuisance should be avoided.
The flue must be installed in accordance with
the recommendations of BS 5440: Part 1.
IMPORTANT NOTICE: if a left or right side
flue is required, then a 90 Degree Bend will
be needed. (Not supplied as standard).
Available on order. If the flue terminates less
than 2 M. above a balcony, above the
ground, or above a flat roof to which people
have access, then a suitable terminal guard
must be fitted.
Fit only recommended flue terminal guard
by securing concentrically around terminal
with screws.
Available on request from:
NOTE:
The flue must be terminated in a place not
likely to cause a nuisance.
10
RAVENHEAT Manufacturing Ltd
Chartists Way
Morley, Leeds, West Yorkshire
ENGLAND LS27 9ET - U.K.
Tel. 0113 252 7007
4.6.2
4.7
4.7.1
A concentric vertical flue kit is available, for
flueing applications up to a maximun height
of 4.5 metres.
For further details see vertical flue installation instructions and page 21.
AIR SUPPLY
The following notes are intended for general guidance.
The roomsealed fan flued boiler does not
require a permanent air vent for combustion
air supply;
Where installed in a cupboard or compartment ventilation is not required.
4.8
4.8.1
4.8.2
WATER CIRCULATION (central heating)
Detailed recommendations are given in BS
6798 5449.1.1977 (for smallbore and microbore central heating systems). The following
notes are given for general guidance.
Pipework
Copper tubing to BS 2871 1.1.1971 is recommended for water pipes. Jointing should
be either with capillary soldered or with
compression fittings.
Where possible pipes should have a gradi-
ent to ensure air is carried naturally to air
release points and water flows naturally to
drain taps. It should be ensured as far as
possible that the appliance heat exchanger
is not a natural collecting point for air
except where providing useful heat, pipes
should be insulated to prevent heat loss
and to avoid freezing. Particular attention
should be paid to pipes passing through
ventilated spaces in roofs and under floors.
Fig. 6A
4.8.3
The water through the appliance heat
exchanger circuit must exceed the min.
2.38 gals/min. (650 It/h) when the burner is
firing. It is important to ensure that this rate
is achieved when sections of the system
are shut off either manually or by automatic
controls. Therefore a by-pass must be fit-
ted to the system (15 mm min.) (Fig. 6A).
If the volume of circulating water is too low,
the boiler water temperature will rise too
rapidly. This could cause noise in the system
or even cause the safety thermostat to trip.
11
4.8.4
4.8.5
Draining tap
These must be located in accessible positions to permit the draining of the whole system. The taps must be at least 15 mm nominal size and manufactured in accordance
with BS 2870 1980.
Air release points
These must be fitted at all high points where
air will naturally collect, and must be sited to
facilitate complete fitting of the system.
ed to the heating system to provide limited
automatic water make up.
Mains topping up method (Fig.9).
Here the temporary connection is supplied
from a service pipe, or distributing pipe,
which also supplies other draw-off points at
a lower level.
4.8.6
4.8.7
4.8.8
The appliance has an integral sealed expan-
sion vessel to accomodate the increase of
water volume when the system is heated. It
can accept up to 1.5 gal (7 Its) of expansion
water. lf the appliance is connected to a system with an unusually high water content,
calculate the total expansion and add additional sealed expansion capacity as appro-
priate (Fig. 7).
In general modern systems will present no
problem.
Fig. 7
Mains water feed: central heating
There must be no direct connection to the
mains water supply, even through a nonreturn valve, without the approval of the
Local Water Authority.
Permissible methods of filling
Cistern method (Fig. 8).
The system may be filled by one of the following methods. Through a cistern used for
no other purpose, via a ballvalve permanently connected directly to a service pipe
and/or cold water distributing pipe. The stat-
ic head available from the cistern should be
adequate to provide the initial system
design pressure.
The cold feed pipe from the cistern should
include a non-return valve, and a stop-valve
with an automatic air vent connected between them, with the stop valve being locat-
ed, between the cistern and the automatic
air vent. The stop valve may remain open
during normal operation of the system, if
automatic water make-up is required.
Booster pump method (Fig. 8).
The system may be filled through a self contained unit comprising of a cistern pressure
booster pump if required and if necessary
an automatic pressure reducing valve or
flow restrictor. The cistern should be supplied through a temporary connection from a
service pipe or cold water distributing pipe.
The unit may remain permanently connect-
A combined double check valve shall be
installed upstream of the draw-off point,
through a temporary hose connection from
a tap supplied from the mains, where the
mains pressure is excessive a pressure
reducing valve shall be used to make filling
easier. The following fittings shall form a permanent part of the system and shall be fitted in the order stated.
a) A stop valve complying with the require-
ments of BS 1010 Part 2 (the temporary
hose from the draw off tap shall be connected to this fitting).
b) A test clock.
c) Double check valve of an accepted type.
d) A non return valve of an accepted type.
We recommend use of a Ravenheat
Filling Loop designed for this method of
filling the system. Available from your
supplier.
PROVISIONS FOR MAKE UP WATER
(Fig. 7)
Provision can be made for replacing water
loss from the system either.
A) from a manually filled made up bottle with
a readily visible water level. The bottle
should be mounted at least 150 mm (6 in)
above the highest point of the system and
be connected through a non return valve to
the return side of the heating system.
12
SIZING OF ADDITIONAL EXPANSION VESSELS: TABLE 3
Deduct from the value given in the table the 7 litre vessel supplied.
Safety
valve setting (bar)
Vessel charge
pressure (bar)
Initial system
pressure (bar)
Total water
content Of system
Litres
25
50
75
100
125
150
175
200
225
250
275
300
325
350
375
400
425
450
475
500
For system volumes
other than those given
above, multiply the
system volume by
the factor across
Note: This pressure can be increased up to 1.5 bar to suit high static head situations, see item 10, other appliance components in the
SERVICING INSTRUCTIONS.
3.0
0.5
0.5
2.1
4.2
6.3
6.3
10.4
12.5
14.6
16.7
18.7
20.8
22.9
25.0
27.0
29.1
31.2
33.3
35.4
37.5
39.6
41.6
0.0833
1.0
3.5
7.0
10.5
14.0
17.5
21.0
24.5
28.0
31.5
35.0
38.5
42.0
45.5
49.0
52.5
56.0
59.5
63.0
66.5
70.1
0.140
1.5
6.5
I2.9
19.4
25.9
32.4
38.8
45.3
51.8 110.2
58.3
64.7
71.2
77.7 165.3
84.1 179.1
90.6
97.1
103.6
110.1
116.5 247.9
123.0
125.9
0.259
2.0
13.7
27.5 5.4
41.3
55.1
68.9
82.6
96.4
124.0
137.7
151.5
192.8
206.6
220.4
239.2
261.7
275.5
0.551
1.0
1.0
EXPANSION VESSEL VOLUME (LITRES)
2.7
8.2
10.9
13.6
16.3
19.1
21.8
24.5
27.2
30.0
32.7
35.7
38.1
40.9
43.6
46.3
49.0
51.8
54.5
0.109
1.5
4.7
9.5
14.2
19.0
23.7
28.5
33.2
38.0
42.7
47.5
52.2
57.0
61.7
66.5
71.2
76.0
80.7
85.5
90.2
95.0
0.190
2.0
10.3
20.6
30.9
41.2
51.5
61.8
72.1
82.4
92.7
103.0
113.3
123.6
133.9
144.2
154.5
164.8
175.1
185.4
195.7
206.0
0.412
1.5
1.5 2.0
3.9 8.3
7.8
11.7
15.6
19.5
23.4
27.3 57.9
31.2 66.2
35.1
39.0 82.7
42.9
46.8
50.7
54.6 115.8
58.5
62.4 132.4
66.3 140.7
70.2
74.1
78.0 165.5
0.156
16.5
24.8
33.1
41.3
49.6
74.5
91.0
99.3
107.6
124.1
148.9
157.2
0.331
4.8.9
B) Where fitting a make up vessel would be
difficult re pressurisation of the system can
be done. See section on FILLING.
If the capacity of the central heating system
should exceed 110 litres, an additional
vessel may be installed if required on
old system with a recommended descaling agent.
Also check pipework and renew any corroded pipework or fittings. Valve glands must
be repacked or replaced wherever necessary and any defective controls exchanged.
the return to the combination boiler from
the heating system (Fig. 7). Guidance on
vessel sizing is given in (Table 3).
Reference should be made to British Gas
Publications <<Material and Installation
Specifications for Domestic Central Heating
and Hot Water>>. Draining taps should be at
least 1/2” in BSP nominal size and be in
accordance with BS 2879.
Installation to an existing central heating
4.8.10
4.9 DOMESTIC WATER
Hard water areas
If the area of installation is recognized as a
hard water, it is recommended that a suitable
water treatment device is installed in the
mains.
The water hardness can be determined by
using the standard test paper or by referring to local water authority.
system
The combination boiler is designed to oper-
4.9.1
The domestic hot water must be in accorate on a sealed system only. Therefore if dance with the relevant recommendations
the existing system is of the open water
type it will have to be modified to comply
with BS 5376 Part 2.
Before installing a new combination
of BS 5546. Copper tubing to BS 2871. 1 is
recommended for water carrying pipework
and MUST be used for pipework carrying
potable water.
boiler to an existing system flush out the
13
The Ravenheat boiler is supplied for con-
nection to a 230 V - 50 Hz single phase
supply. The supply must be fused at 3 A.
NOTE: The method of connection to the
electricity supply MUST facilitate complete
electrical isolation of the appliance, by the
use of a fused, double pole isolator, having
a contact separation of at least 3 mm in all
poles. The point of connection to the electricity supply must be readily accessible
and adjacent to the appliance except,
where the appliance is installed in a bath-
room, this MUST be sited outside the bath-
room.
Fig. 10
SECTION
5.1
5.1.1
5.2
5.2.1
5 INSTALLATION
WARNING
It is MOST IMPORTANT that this appliance
is installed in a VERTICAL POSITION, with
the flue air duct passing through the wall in
a HORIZONTAL PLANE. A minor deviation
from the horizontal is acceptable, provided
that this results in a downward slope of the
flue/air duct away from the combination
boiler.
DELIVERY
The appliance will arrive on site in two
cartons:
Boiler carton containing (Fig. 10-l 1):
a) boiler fully assembled
b) installation instructions and
user instructions
c) white paper template
d) terminal cover plate (Fig. 12)
e) - 4 coach bolts and wall plugs
- screws and dowels
Polythene bag containing:
a) 2-22 mm compression ball valves
(heating)
b) 1-15 mm compression ball valve
(with drain screw for domestic cold
water inlet)
c) 1-1/2” BSP Union gas cock
d) - 2 15 mm flanged copper tails complete
with 1/2” brass nuts and washers
- 2 22 mm flanged copper tails complete
with 3/4" brass nuts and washers
Fig. 11
14
FLUE BOX CONTAINING (Fig. 12):
Standard Flue Assembly
60
- Air intake duct
61
- Flue exhaust duct
62
-Terminal
65
-Pipe centering spring
127
-Terminal Cover Plate
(Contained in the carton Fig. 10)
Fig. 12
OPTIONAL EXTRAS:
Flue bend carton containing: (Fig. 13)
57 Flue bend supplied as an extra cost only when
requested
59 Rubber seal 0 60
FLUE EXTENSION BOX CONTAINING (Fig. 14):
1000 mm flue extension duct as an extra cost only
when requested for side and vertical flue applications
Fig. 13
Fig. 14
59 Rubber seal 0 60
63 -Air intake duct extension
64 - Flue exhaust duct extension
65 - Pipe centering spring
WARNING:
Maximum allowable flue length 3.5 m horizontal or
4.5 m vertical (Fig. 3) or page 21.
maximum No. 3x800 mm vertical No. 4x800 mm.
Flue duct extension used with standard flue
15
5.3 UNPACKING
Fig. 18
4) Rest the boiler on the floor and remove
the polystyrene guards
2) Rest the carton on
the floor (keeping the flaps open)
Fig. 19
5.4
POSITIONING OF THE BOILER
Fig. 22
5.4.1
5.4.2
5.4.3
5.4.4
5.4.5
5.4.6
- Remove the 2 screws that secure the
upper part of the front panel of the casing (Fig. 19).
- Carefully slide the front panel a few millimetres up towards the top of the appliance until it is free from its slot, and then
lift off (Fig. 20).
Unscrew the 2 screws that fasten the lower
grating on the casing and remove it from
the sides of the casing (Fig. 22).
Push down the 2 plastic clips that fasten the
instrument panel (Fig. 23).
Lower the instrument panel down by rotating it on its own hinges (Fig. 25).
Unscrew the 2 screws that fasten the two
side panels (Fig. 21).
Remove the two sides of the casing by slightly lifting them and carefully sliding towards the
top of the appliance, to release them from
their upper suspension hooks (Fig. 26-27).
Make sure the casing and screws are put to
one side in a safe place.
Fig. 23
Fig. 25
5.5
5.5.1
Fig. 21
INSTALLING THE APPLIANCE FOR
REAR FLUE OUTLET
Use adhesive tape to attach the template to
the wall, making sure that the centre line is
vertical.
- Mark the four boiler fastening holes on the
wall as well as the centre of the flue duct.
- Detach the template from the wall.
- Use a 10 mm. dia drill to make the 4 boiler securing holes. Insert the plastic
expansion plugs.
- Cut or core drill a 105 mm. dia hole for
inserting the flue duct.
- Screw in the two upper coach bolts leaving
them about 10 mm. out from the wall to
enable the boiler to be located on the wall.
Fig. 27
Fig. 28-29
5.5.3
Fig. 30
If the standard duct furnished with the boiler
is too long (the wall to. go through is
than 680 mm. thick) it can be shortened
follows:
- Remove the centering spring 65, turn the
flue terminal clockwise and push to
disengage inner flue duct.
- Measure the thickness W of the wall.
- Cut the outer flue duct at right angles to a
length equal to W + 98 mm.
less
as
- Cut the inner flue duct (60 mm) at right
angles to a length equal to W + 201 mm.
Insert from cut end. Reassemble the two
tubes turn the flue terminal anti clockwise to
lock together. Insert centering spring 65.
Must be de-burred.
Fig. 32
INTAKE AND EXHAUST TERMINAL COMPONENTS
Fig. 31
KEY
56 - Straight header
57 - Elbow header
58 - Header gasket
59 - Rubber seal 0 60
18
60 - STD air intake duct
61 - STD flue exhaust duct
62 -Terminal
63 -Air intake duct extension
64 - Flue exhaust duct extension
65 - Pipe centering spring
127 - Terminal cover plate
128 - Screw
5.5.4
5.5.5
insert the flue assembly into the wall, being
careful to make sure that the outer air duct
comes flush to the inner surface of the wall.
Lift the boiler on to the wall (Fig. 34), locating onto the top coach bolts. Fit the two
lower coach bolts and tighten all four securing bolts.
5.5.8
5.5.9
Fig. 35
Fit terminal cover plate if required.
Extension kits are available on order for flue
extension of up to 3.5 metres total length
(Fig. 31).
5.5.6
Fig. 33
Working above the boiler pull the flue
exhaust duct towards the boiler in order to
engage tube 61 into its header 56A (Fig.
31-35).
Fig. 34
Fig. 37
5.5.10
Each extension length extends the pipe by
approximately 1000 mm long up to a maximum of three extensions.
Pipeline length can be established using
the instructions in section 5.5 for rear flue
outlets and section 5.7 for side flue outlets.
Extensions must be installed with the
widened end of the air intake pipe and the
tapered end of the flue pipe aimed towards
the exhaust terminal. Extensions must be
joined together, with the standard terminal
pipe, inserted in each other as far as they
can go.
If an extension must be shortened, this must
be done from the straight end, and not from
the tapered end. To measure the pipeline
properly all components must be assembled
and total length measured before cutting.
The straight end of the extension connects
to the boiler. The flue output pipe fits into the
boiler header until it stops (Fig. 31).
All joints must be sealed with a rubber collar,
fastened with the pipe straps supplied.
It is important to put the centering spacer,
supplied with the unit, inside between the
two pipes, from the side opposite the extension’s straight end.
- Measure the distance Y between the centre of flue duct hole to the corner. Detach
the template from wall.
-Use a dia. 10 mm. drill to make the 4
holes for securing the boiler. Insert the
plastic expansion plugs. Core drill a 100
mm dia. hole in the side wall for inserting
the flue duct.
- Screw in the two upper coach bolts leaving them about 10 mm. out from the wall
in order to enable the boiler to be located.
Fig. 38
5.5.11
5.6
5.6.1
5.7
5.7.1
NOTE: a suitable support bracket is available from Ravenheat Manufacturing and
should be used to support flue length at
least every 1.8 metre preferably at each
joint this bracket should be secured to wall
and flue duct.
INLINE FLUE BEND
Measure the distance between the flue
bends or the flue/terminal assembly. The
measurement should be taken from the
outer edge of the flue and bend (Fig. 398).
COMPLETING BOILER INSTALLATION
Reassemble the outer casing (sect 5.4)
proceeding in this order
1) Fit the two sides.
2) Refit the instrument panel in reverse ord-
er as in (sect. 5.4.4).
3) Refit the lower grating (sect. 5.4).
INSTALLING THE APPLIANCE FOR SIDE
FLUE OUTLET (Fig. 38-39)
-Attach the template to the wall with adhe-
sive tape, making sure that the centre line
is vertical and that the distance from the
centre line to the nearest side wall is not
less than 305 mm.
-Mark the four boiler securing holes on the
wall and extend the axis of the flue duct
hole to the side wall ensuring it is
horizontal.
-Trace the centre of the flue duct hole 60
mm. from the corner of the wall (Fig. 38).
Fig. 39
20
Fig. 398
USING AN INLINE 135
KEY
56 - Sample point (if required)
57 - Elbow Header
59 - Rubber seal 0 60
o
OR 90o BEND & VERTICAL FLUE SECTION
63 -Air intake duct extension
64 - Flue Exhaust duct extension
65 - Pipe centering spring
128 - In Line Bend (45” and/or 90”)
Deducted from overall length for each
90” bend 750 mm
135” bend 375 mm
VERTICAL FLUE OPTIONS
The vertical flue kit is intended
for use where a horizontal flue
outlet is not possible or
desired. The vertical flue can
be used either with a flat roof
or a pitched roof (maximum
pitch 60”). Where a straight
vertical flue is not possible or
desired, an offset vertical flue
can be used in conjunction
with a side horizontal flue
extension piece and an inline
90” flue bend.
5.7.2
5.7.4
5.7.5
5.7.6
5.7.7
Detach the straight header and replace it
with the elbow header (supplied on
request), positioning the elbow towards the
required direction (Fig. 40).
Important: make sure that the elbow’s dia.
60 mm. duct is inserted into the fan and
that the rubber seal and orifice are been
correctly fitted.
Remove left or right flue duct door cover as
appropriate (Fig. 42).
- If the standard, duct furnished with the
boiler is too long (position of the boiler
from the wall to go through as illustrated
in the drawing and wall thicknesses less
than what was specified above) it can
be shortened as follows: (Fig.31-32).
- Remove the centering spring 65. turn
the flue terminal clockwise and push to
disengage inner flue duct.
- Measure the thickness W of the wall.
- Cut the outer air duct (100 mm. dia.) at
right angles and to a length equal to
W+Y - 94 mm. (Fig. 32).
- Cut the inner flue duct (63 mm. dia.) at
right angles and to a length equal to
W+Y.
- Reassemble the two tubes turn the flue
terminal anti clockwise to lock together.
Insert centering spring 65 must be de-
burred.
Insert the flue assembly into the wall,
making sure it will not interfere with the
boiler body (Fig. 43) when mounting.
Lift the boiler on the wall. Locate onto the
top coach bolts. Fit the lower coach bolts
and tighten all four securing bolts.
ELBOW HEADER
RUBBERSLEEVE
5.7.8
5.7.10
5.7.11
5.8
5.6.1
Working above the boiler pull the flue duct
towards the elbow in order to engage tube
61 into its header 57A.
Fit terminal cover plate if required (Fig. 37).
Extension kits are available on order for
flue extension of up to 3.5 metres total
length (Fig. 31). For further details see sect
5.5.10.
REASSEMBLE BOILER AS PER
(sect. 5.6.1)
Fitting valves pack
Remove plastic caps from boiler connection
and fit flanged copper tail and valves as per
Fig. 46 using washers provided.
Fig. 42
22
Fig. 43
5.9
5.9.1
5.92
5.10
5.10.1
5.11
GAS CONNECTION (Fig. 46)
A minimum gas pressure of 20 mbar (6 in
w.g.) must be available at the boiler inlet at
full flow rate.
Fit gas service cock to the boiler via the
union nut and connect gas pipe.
Do not overtighten and use another
spanner as a counter force to avoid
straining internal connections.
Important: Consult sect. 4.5.1
CENTRAL HEATING CONNECTION
(Fig. 46)
Before any central heating connections are
made to the boiler all system valves should
be opened and the system thoroughly
flushed out with cold water.
- Connect the central heating return pipe
to the isolating cock marked CHR.
- Connect the central heating flow pipe to
the isolating cock marked CHF.
-
Pipe dimension’s and position are marked
on template supplied and Fig. 49 A
DOMESTIC HOT WATER (Fig. 46)
Fig. 44
5.11.1
The domestic hot water circuit does not need
a safety valve but it is essential to ensure that
the pressure of the cold water supply does
not exceed 10 bar. If in doubt it is advisable to
install a pressure reducing valve. The
minimum pressure needed to operate the
domestic hot water system is 0.5 bar
with a flow of approx 3 Lts per min. The
regulator screw on the cold water outlet of
the diverter valve may be adjusted to
prevent excess volume flow (Fig. 53
COMMISSIONING SECTION). Flush out all
foreign matter from the supply pipe before
connecting to the appliance.
- Connect the 15 mm. cold water pipe to
the stop cock to the appliance inlet
marked DCW.
- Connect the 15 mm. hot water pipe with
a suitable connection.
Fig. 45
23
Fig. 46
5.13
ELECTRICAL CONNECTIONS
5.12
5.12.1
SAFETY VALVE DISCHARGE
The safety valve is located near the pump.
It has a threaded outlet RC l/2” (to 15 mm
copper) to permit a discharge pipe to be
connected. When connecting ensure the
discharge pipe does not restrict access.
The discharge should terminate facing
downwards exterior to the building in a
position where discharging (possibly boiling
water & steam) will not create danger or
nuisance, in easily visible position, and not
to cause damage to electrical components
or wiring.
The discharge must not be over an entrance
or a window or any other type of access.
5.13.1
5.14
IMPORTANT: Electricity supply must be as
specified in clause (sect. 4.10).
- When controls external to the appliance
are required, design of the external
electrical circuits should be undertaken
by a competent person. In accordance
with the IEE wiring regulations.
It is essential that all external controls
must be volt free.
Factory fitted internal wiring must not be
disturbed when wiring external controls.
- To gain access to the electrical box
remove the front panel of the case as
described in clauses (sect. 5.4.1) and
the instrument panel as described in
clauses (sect. 5.4.3).
- The terminals are easily visible on the
front of the electronic control board (Fig.
48).
- Heat resistant flexible cable is fitted
between the isolator and the terminal
block. It is a 3 core cable of 0.75 mm
(24x0.2 mm) to BS 6500.
Make sure all wires to the appliance are
routed away from sharp edges and hot
surfaces.
The cable must be fastened with its cord
anchorage and connected so that should
the cable slip from the anchorage the
current carryIng conductors does not
become taut before the earthing
conductor.
Securely tighten all terminal screws and
arrange the cable with slack between
the cord anchorage and the terminal
block.
WARNING: If the supply cord is
damaged, it must be replaced by a
service engineer (supply cord available
from Ravenheat Manufacturing Ltd).
PROGRAMMABLE TIMECLOCK
Instructions for use Consult User’s Guide.
2
Fig. 48
DlAGNOSTIC
INFORMATION
COMPUTER
CONNECTION
6.1
6.2
6.2.1
6.3
6.4
Each boiler has been through a rigorous
operational procedure at our factory and
should not require any further adjustment. If
in the unlikely event of the appliance not
operating correctly, please turn to the Fault
Finding and Logic Sequence charts.
GAS SUPPLY INSTALLATION
Inspect the entire installation including the
gas meter, test for soundness and purge, all
as described in BS 6891.
ELECTRICAL INSTALLATION
Preliminary electrical system checks to
ensure electrical safety shall be carried out
by a competent person (earth continuity,
polarity, resistance to earth). Those checks
are outlined in the <<Instructions for British
Gas Multimeter>> Booklet. If a fault has
occurred on the appliance the fault finding
procedure should be followed as specified
under the servicing section of this
document.
INITIAL FILLING OF THE SYSTEM
Open central heating flow and return valves.
Unscrew the cap on automatic air release
valve one full turn (leave open permanently).
- Close all air release taps on the central
heating system.
- Gradually open stopcock at the filling
point connection to the central heating
system until water is heard to flow.
- Starting with the lowest radiator open
each air release tap in turn. Close it only
when clear water, free of bubbles, flows
out. In the same way release air from
any high points in the pipework.
- Continue filling the system until at least
1.5 bar registers on gauge. Then turn off
the filling points stopcock.
- Inspect the system for water soundness
and remedy any leaks discovered.
6.5
6.6 FILLING THE HOT WATER SYSTEM
SETTING THE SYSTEM DESIGN
PRESSURE
The design pressure must be a min. 1 bar
and max. 1.5 bar. These figures are read off
the pressure gauge.
- The actual reading should ideally be 1
bar + the height in metres to the highest
point of the system above the base of
the appliance (up to a max of 1.5 bar).
N.B.: The safety valve is set to lift a 3
bars (30 mt/42.5 psig).
- To lower the system pressure to the
required value remove drain point (Fig.
93) or drain on the heating circuit.
Close all hot water draw-off taps.
Open the cold water inlet cock.
Slowlv open each draw-off tap until clear
water-is discharged.
Fig. 49
25
INSTRUMENT PANEL
Fig. 50
GAS VALVE
Fig. 51
KEY
77 - Upstream pressure inlet
81 - Downstream pressure outlet
104 - Gas valve modulator
110 - Max. regulator nut
111 - Min. regulator nut
114 - Electrical connections modulator
26
6.7
6.9
LIGHTINGTHE BOILER (Fig. 50)
Before lighting the main burner make sure
that the heating circuit flow and return
valves are open and also that the cold water
input cock is also open.
- If external controls are installed (e.g.
timeclock and thermostat) make sure
that they call for heat.
- Turn summer/winter selector switch 1 to
winter
- Turn control thermostat 4 up to its
maximum setting.
- Now the main burner should turn on.
With leak detection fluid test for gas
soundness of all gas components and
joints.
- See paragraph 6.14 for regulating the
heating circuit thermostat.
Check gas mains pressure (Fig. 52). Fit
a gas pressure gauge on pressure inlet
77 (Fig. 51) on the gas valve, after
releasing the seal screw.
Check the gas mains pressure with
boiler operating.
Check with the Local Gas Supplier if the
pressure differs significantly from 20
mbar.
CHECK THE GAS PRESSURE AT THE
BURNER
Now check if the maximum gas pressure at
the burner is equal to 8.1 0.5 mbar (3.2
0.2 in w.g.) for RSF 82E - RSF 82ET.
To do this proceed as follows:
- Turn off main switch 1 (Fig. 50)
-Set main switch on &
-Set control thermostat 5 at its
maximum setting.
-Fit a pressure gauge, using a hose, to
pressure test point 81, (Fig. 51), after
first loosening its close-off screw.
-Open one or more hot water taps so
that at least 10 11.4 litre of water flows
per minute.
- The pressure indicated on the pressure
gauge is the maximum operating gas
pressure.
- Check if the minimum pressure
corresponds to 1.5 mbar (0.6 in w.g.)
RSF 82E - RSF 82ET as is set at the
factory.
Detach one of the wires going to
modulator 104 (Fig. 51) and make the
boiler operate just as’ was done for
checking the maximum pressure.
6.10
6.11
6.12
ADJUSTING MINIMUM AND MAXIMUM
PRESSURE (Fig. 51) SIT-HONEYWELL
GAS VALVE
- Remove cap covering modulator to gas
valve.
- Detach one of the cables connected to
the modulator 114.
- With the boiler operating use a screw
driver (HONEYWELL 9 mm spanner) to
turn the nut 111 clockwise to increase
pressure and anti-clockwise to decrease
pressure.
RECONNECTTHE DETACHED CABLE
Use a screw-driver to hold nut 111 firm
(HONEYWELL 9 mm spanner) and use a
10 mm spanner (HONEYWELL 7 mm
spanner) wrench to rotate the nut 110
clockwise to increase the pressure and
counter-clock-wise to decrease it.
After adjustement turn off D.H.W.Taps.
SETTING CENTRAL HEATING GAS
PRESSURETHE BOILER COMES SET AT
MID POSITION RATING FOR USE ON
C.H. (table1)
When the boiler operates in the C.H. mode
the gas pressure at the burner can be set
between the min. and max. values.
This permits capacity to be adjusted to suit
system demand. If adjustment is required
proceed as follows:
- Remove the front panel and the panel
instrument as described in clauses
(sect. 5.4.1 and sect 5.4.3). Unscrew the
two screws holding the control box cover
and lift off (Fig. 78).
- Select (winter) switch position
- Turn control thermostat 4 to maximum
setting (Fig. 50).
- Check all external controlsare on and
calling for heat ensure all D.H.W. taps’
are off.
- With boiler operating use a screwdriver
to turn potentiometer (Fig. 48) clockwise
to increase pressure and anti-clockwise
to decrease pressure.
- To obtain the desired heat value
establish pressure as per (Fig. 52).
- Replace the protective cover.
- Once this pressure is established, mark
it up on data badge with adhesive red
label/arrow burner pressure setting so
that this can be referred to and checked
during future servicing.
Observe the pilot flame which will light a
second before main burner. It should be
about 20 mm long (Fig. 528) and envelop
the spark electrode tip.
27
Fig. 52
RATIO BETWEEN BURNER
PRESSURE AND OUTPUT
6.13
6.13.1
CHECKING THE FLUE SYSTEM
The flue system should be visually checked
for soundness. Check all clamps and fixings
are secure and tight.
THREE WAY VALVE
Fig. 53
6.14
6.14.1
6.15
6.15.1
CHECKING THE HEATING THERMOSTAT
Allow the system to warm up and then turn
the C.H. thermostat to ensure the main
burner modulates from “high” to “low” and
“low” to “off” and vice versa (scale range
covers approx. 45
o
C 85oC).
TESTING AND REGULATING THE
DOMESTIC HOT WATER SYSTEM FLOW
Put the appliance in operation with the
(summer/winter) switch in winter position.
- Open a domestic hot water tap
(preferably the bath tap). Ensure cold
water inlet stopcock is open and the
D.H.W. thermostat 5 (Fig. 50) is set at
maximum.
If the burner does not light check that the
water flow rate is above the min.
required to operate the differential
pressure 2.8 Lts./min. (0.61 galsimin).
- The temperature of the water will
depend on the rate at which it flows. If,
due to high water pressure, the flow rate
is too high (and thus the temperature too
low for practical use) the flow rate may
be adjusted. It is better to set for the
lowest acceptable temperature preferably
at the bath tap since the user can gain
higher temperatures at other restricted
flow taps (Table 1).
- To adjust ‘the flow rate refer to (Fig. 53)
side view and locate the adjustment
screw (Fig. 53). Turn the screw clockwise
until the
required temperature is
reached.
N.B.: If the cold supply is subject to large
fluctuations or is above the permitted
max. water
pressure, a
suitable
pressure/flow regulator should be fitted
in the cold water supply to the appliance.
- Turn the appliance mode selector switch
(Fig. 50) (1) to the summer position.
Slowly close the draw off tap to reduce
the flow rate to above the min. (approx.
2.8 litre/min - 0.61 gals/min.). Rotate the
D.H.W. control thermostat to ensure it
operates at its various setting.
- Close the draw-off tap still further. The
burner should stop when the rate falls
below about 2.8 litreslmin (0.61
galslmin.).
Once the process of commissioning the boiler is
complete,
the commissioning engineer MUST
complete his section in the Benchmark log book.
28
6.16 HANDING OVER TO THE USER
6.16.1 After completion of installation and
commissioning of the system, the installer
should hand over to the Householder by
taking the following actions:
- Hand the “User’s Instructions” to the
Householder and
responsibilities under the “Gas Safety
Regulations 1996 (as amended)“.
- Explain and demonstrate the lighting
and shutting down procedures.
- The operation of the boiler including the
use and adjustment of ALL system
controls which should be fully explained
to the Householder. This then ensures
the greatest possible fuel economy
consistent with household requirements
of both heating and hot water
consumptions.
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 frost conditions.
- Explain the function and the use of the
boiler only/ (Summer/Winter)
and ON/OFF switches.
- Explain and demonstrate the function of
time and temperature controls neon
lights radiator valves etc. for the
economic use of the system.
- If an optional time clock is fitted, then
draw attention to the time clock User’s
Instructions and hand them to the
Householder.
- Stress importance of regular servicing
by a qualified Heating Engineer and that
a comprehensive service should be
carried out AT LEAST ONCE A YEAR.
Fill in the Benchmark log book and leave
completed with the customer.
SECTION 7 SERVICING INSTRUCTIONS
explain
His/Her
7.2
7.2.1
7.2.2
ticular installation conditions and usage but in
general, once per year should be adequate.
WARNING
Before the start of any servicing or
replacement of components always iso-
late electricity supply to the appliance
and always turn off the appliance gas
supply at the gas service cock.
Data badge position - lower left hand
sub frame.
- The following notes apply to the appliance and its controls but it should be
remembered that attention must also be
paid to the heating and hot water circuits with special attention to radiator
valves, thermostats, clocks, leaking hot
water taps etc.
- Where it is necessary to replace a gasket that relies on adhesive for securing this adhesive will be supplied with the
gasket as a spare item.
- In all cases prior to servicing, remove
the outer case (sect. 5.4). Operate the
appliance by turning the hot water services on to a high water flow, and
observe the main burner.
- Check that the flame covers all the
flame ports and is of a light blue colour.
Yellow flames and excessive lifting of
flames indicate poor combustion.
- IMPORTANT: After completing any servicing or replacement of gas carrying
components it is essential that a test for
gas soundness is always carried out
along with functional checks in operation.
TO INSPECT AND CLEAN THE APPLIANCE
Before carrying out cleaning operation,
cover the electrical control panel with a
piece of waterproof material to protect it
from debris.
Inspect the heat exchanger for any blockage. Deposits of any material should be
brushed always using a soft brush.
NOTE: Do not use brushes with metallic
bristles.
7.1
7.1.1
Ravenheat are a member of the
Benchmark initiative and fully supports the
aims of the programme. Benchmark has
been instructed to improve the standards of
installation and commissioning of central
heating systems in the UK and to
encourage the regular servicing of all
central heating systems to ensure safety
and efficiency.
SERVICING
To ensure continued efficient operation of the
appliance it is necessary to carry out servic-
ing and cleaning at regular intervals. The frequency of cleaning will depend upon the par-
7.2.3
7.2.4
7.2.5
7.2.6
Examine internal pipe-work connections
and automatic air vent for any water leaks.
Rectify if necessary.
Examine the combustion chamber insulating
material and renew if damaged (sect. 7.9).
Remove and examine the main burner
injector and pilot injector clean or renew, as
necessary (sec. 7.12 & 7.14).
Inspect the main burner and remove any
deposit with a soft brush. Check the electrodes for damage or deterioration, clean or
renew as necessary. Ensure that the spark
gaps are correct to dimensions specified in
sec. 7.15.
29
EXPLODED DIAGRAM OF BOILER BODY
Fig. 54
KEY
1 - Heat exchanger
26 - Auto air vent valve
28 - Pressure switch
36 - Fan
38 - Plenum chamber
39 - Plenum chamber cover
40 - Window
30
41 - Window seal
42 - Window clamp ring
43 - Thermocouple seal
44 - Burner centering pin
45 - Combustion chamber
46 - Ceramic insulation
50 - Flue gas exhaust hood
51 - Fan fastening bracket
52 - Air restriction ring
53-Connection tube54-Connection tube +
56-Straight header
57-Elbow header
58
Header gasket
66-Seal
-
Connection pipe
67
68-Seal
69 Plug
7.2.8
7.2.9
7.3
7.3.1
7.4
7.4.1
Examine flue duct and flue hood and ensure
that there is no obstruction. Examine the
gasket at the entry into the flue duct.
It is essential that a good seal is made at the
outlet to the fan, renew this gasket if there is
any sign of damage or deterioration.
TO REMOVE REPLACE THE FRONT
PANEL OF THE CASING (Fig. 19 & 20)
Remove the 2 screws that secure the upper
part of the front panel of the casing.
Lift the front panel few millimeters to the top,
until it is free from the slot and remove panel.
TO REMOVE/REPLACE THE COMBUSTION CHAMBER COVER
Remove the front casing panel (sect. 7.3).
7.8
7.8.1
7.8.2
7.8.3
TO REMOVE THE HEAT EXCHANGER
(Fig. 62-63-64)
Remove front casing (sect. 7.3).
Remove combustion chamber front cover as
in (sect. 7.4).
Remove the lower grating (sect. 5.4.2).
Lower the instrument panel (sect. 5.4.3 & 4).
Remove the two sides of the casing by
slightly lifting them and sliding them towards
the top of the appliance, to release them
from their upper suspension hooks.
Close the on/off valves for the heating and
the hot water circuits. Drain the heating
system from the drain point mounted on the
system (Fig. 93) and drain the hot water from
the lowest tap on its pipeline system and
drain point on D.H.W. inlet cock (Fig. 46).
7.4.2
7.4.3
7.4.4
7.6
7.6.1
7.6.2
7.6.4
Unscrew all the screws that fasten the cover
to the chamber body and put them into a
container so that they don’t get lost.
Detach the cover, being careful not to
damage the seal.
Reassemble in reverse order.
Ensure good seal of cover when replacing.
TO REMOVE/REPLACE THE FAN
ASSEMBLY (Fig. 58)
Remove front casing (sect. 7.3).
Remove combustion chamber front cover as
in (sect. 7.4).
Disconnect the electrical connections from
the fan motor.
Support the fan and remove the two fixing
screws and bracket from the front of the flue
hood.
Carefully withdraw it from the appliance.
Place in a safe place until required. Reassemble in reverse order. Ensure wires are
connected correctly (Fig. 94).
7.8.4
7.8.5
7.8.8
7.8.9
7.8.10
7.8.11
7.8.12
7.8.13
7.9
Remove the fan (sect. 7.6)
Remove the flue hood (sect. 7.7).
Remove the automatic air vent (Fig. 92)
Disconnect unions for the hot water and
heating water pipelines (Fig. 62).
Unscrew the rings that fasten the heat
exchanger to the combustion chamber.
Remove the two side insulation panels at
top of heat exchanger (Fig. 63).
Pull the heat exchanger up until its
connections come out from the combustion
chamber and then remove it (Fig. 64).
Replace in reverse order.
Ensure correct wire position (Fig. 94)
IMPORTANT: When replacing a heat
exchanger new seals must be used.
TO REMOVE/REPLACE COMBUSTION
CHAMBER INSULATION PANELS (Fig. 64).
7.7
7.7.1
7.7.2
7.7.3
7.7.4
7.7.5
7.7.6
TO REMOVE/REPLACE THE FLUE HOOD
(Fig. 60)
Remove front casing (sect. 7.3).
Remove combustion chamber front cover as
in (sect. 7.4).
Remove the fan (sect. 7.6).
Remove the three screws on the front that
fasten hood to the combustion chamber.
Remove the two screws at the rear of hood.
Pull the flue hood upwards and then remove.
Replace in reverse order.
7.9.1
7.9.2
Removecasing front panel (sect. 7.3).
Remove combustion chamber front cover
(sect. 7.4).
Remove fan assembly and flue hood (sect.
7.6 & 7.7).
Remove main burner (sect. 7.15).
Remove top insulation pieces at sides.
Remove 2 screws securing combustion
chamber.
To rear of boiler and lower chamber carefully
remove all insulation panels.
Replace in reverse order.
31
7.10
TO REPLACE THE ELECTRODE
(Fig. 66)
Fig. 60
7.10.1
58
Fig.
Remove front casing (sect. 7.3).
Remove combustion chamber front cover
(sect. 7.4).
32
Fig. 62
Fig. 63
Fig. 66
Fig. 64
7.10.2
7.10.3
7.12
7.12.1
7.12.2
7.12.3
7.12.4
7.12.5
7.12.6
7.13
Detach the wire from electrode and then
unscrew the nut that secures it to the pilot
burner assembly and remove.
Replace with new electrode in reverse order.
TO REPLACETHE PILOT INJECTOR
(Fig. 68)
Remove the front panel of the casing and
the combustion chamber front cover (sect.
7.3 & 7.4).
Remove the lower grating (sect. 54.2).
Release the fitting that secures pilot pipe at
the gas valve.
Remove electrode (sect. 7.10)
Unscrew pilot connection from pilot burner.
Pull the aluminium tube downwards and the
injector should come out by itself.
Replace in reverse order.
TO REPLACETHE PILOT BURNER
7.13.1
7.13.2
7.13.4
7.13.5
Remove the front panel of the casing and
the combustion chamber front cover (sect.
7.3 & 7.4).
Remove the electrode and pilot injector
(sect. 7.10 and sect. 7.12).
Remove the two screws securing pilot
burner to main burner (Fig. 69).
Replace in reverse order.
33
7.14
TO REMOVE REPLACE THE MAIN
INJECTORS
Fig. 69
7.14.1
7.14.2
7.14.3
7.14.4
7.14.5
7.14.6
7.14.7
Remove the front panel of the casing and
the combustion chamber front cover (sect.
7.3 & 4). Remove the pilot burner assembly
as described in sect. 7.13.
Unscrew the union (Fig. 70).
Unscrew the 4 screws securing the injector
manifold to the burner (Fig. 71).
Pull the manifold up and out from the combustion chamber (Fig. 72).
Unscrew and replace the injectors and their
seals (Fig. 73).
Replace in reverse order.
Relocate the grommet, sealing the gas supply pipe to the casing taking care not to
damage it. Replace if necessary.
Fig. 70
Fig. 68
Fig. 71
34
7.15
TO REMOVE/REPLACETHE MAIN
BURNER
7.15.1
7.15.2
7.15.4
7.15.5
7.15.6
7.15.7
7.16
7.16.1
Remove the front panel of the casing and
the combustion chamber front cover (sect.
7.3 & 7.4).
Remove the pilot burner assembly as
described in sect. 7.13.
Remove the injectors manifold as described
in sect. 7.14.
Remove the two screws securing the main
burner to the combustion chamber (Fig. 74).
Pull the burner forward and remove
(Fig. 75).
Replace in reverse order.
IMPORTANT: When refitting the burner
make sure that the pins at the rear of the
combustion chamber locate into the slots
made on the rear of the burner.
TO REMOVE/REPLACE THE GAS VALVE
(Fig. 51)
Remove front casing panel (sect. 7.3).
7.16.2
7.16.3
7.16.4
7.16.5
7.16.6
7.16.7
7.16.8
7.19
7.19.1
Push the 2 plastic clips that fasten the
instrument panel (Fig. 23).
Lift the instrument panel to detach it from
the sides, and lower it down by rotating it on
its own hinges (Fig. 25).
Pull the 2 wires from the Modulator. Remove
the electronic ignition board (7.32.213).
Remove the lower grating (sect. 5.4.2).
Unscrew the pilot burner tube connection.
Remove the eight screws (four per side)
that connect the gas valve to the gas
pipelines and then remove it from its seat.
Replace in reverse order, always using new
seals.
TO REMOVE/REPLACE THE HEATING
CONTROL AND DOMESTIC HOT WATER
CONTROL
Remove the front panel from the outer
casing (sect. 7.3) and lower the instrument
panel (sect. 7.16.2 & 3) and remove the
control box cover (7.31.2/3).
Fig. 75
7.19.2
7.19.3
Pull off the thermostat knob (Fig. 78).
Remove the lock nut and remove the control
board (PCB)
Detach the wires by unclipping the
connector from the control board (Fig. 79).
35
7.19.4
7.19.5
Unscrew the lock nut which fastens the
potentiometer to the instrument panel (Fig. 78).
Replace in reverse order
7.22.7
7.23
Replace in reverse order.
TO REMOVE/REPLACE THE ELECTRIC
CONTROL BOARD (PCB)
7.20
7.20.1
7.20.2
7.20.3
7.20.4
7.21
7.21 .1
7.21.2
7.21.3
TO REMOVE/REPLACE THE MAIN
SWITCH (Fig. 82).
Remove the front panel from the outer
casing (sect. 7.3), lower the instrument
panel (sect. 7.16.2 & 3), remove the control
box cover (7.31.2/3) and remove the control
knob.
Detach the wires that connect to the switch
-
make sure that these wires are later
reconnected to the same poles (Fig. 94).
Pull the switch out from the instrument
panel by pressing the clamp springs.
Replace in reverse order
TO REMOVE/REPLACETHE WATER
PRESSURE GAUGE (Fig. 83).
Remove the front panel from the outer
casing (sect. 7.3) and lower the instrument
panel
(sect. 7.16.2 & 3).
remove the lower grating (sect. 5.4.2).
Close the heating system on/off valves and
drain the water from the drain point on the
heating system (Fig. 93).
Unscrew the fitting that secures the
pressure gauge probe.
7.23.1
7.23.2
7.23.3
7.23.4
7.23.5
7.23.6
7.24
7.24.1
7.24.2
Remove the front panel from the outer
casing (sect. 7.3) and lower the instrument
panel (sect. 1.16.2 & 3).
Unscrew the 2 screws holding the control
box cover and remove.
Disconnect mains cables and any other
connections (room thermostat and frost
thermostat if fitted).
Detach the connectors from the board.
.
Detach the PCB board from its base by
unscrewing the six screws.
Replace in reverse order (ensure all
electrical connections are made correctly).
Having replaced PCB recommission boiler
on heating mode (sect. 6.15).
TO REMOVE/REPLACE THE DIFFERENTIAL PRESSURE SWITCH (Fig. 87).
Remove the front panel from the outer
casing and the combustion chamber front
cover (sect. 7.3 & 4).
Detach the wires that connect to the pressure
switch, make sure that these wires are later
reconnected to the same poles (Fig. 94).
7.21.4
7.21.5
7.22
7.22.1
7.22.2
7.22.3
7.22.4
7.22.5
7.22.6
Remove the gauge from the instrument
panel by pressing its fastening springs.
Replace in reverse order.
TO REMOVE/REPLACE THE OVERHEAT
THERMOSTAT
Remove the front panel from the outer
casing (sect. 7.3) and lower the instrument
panel (sect. 7.16.2 & 3) and remove the
control box cover (7.31.2/3).
Remove lower grill and right side of the
casing (sect. 5.4.2 & 5).
Remove the three wires that connect to the
overheat thermostat - making sure that
these
wires
will
subsequently be
reconnected to the same poles (Fig. 94).
Unscrew the plastic cover and locknut that
fastens the overheat thermostat and remove it.
Remove the split pin and pull the thermostat
sensor from its pocket complete with case
sealing grommet.
Remove case sealing grommet from the old
thermostat and fit to new one.
7.24.3
7.24.4
7.24.5
7.24.6
7.25
7.25.1
7.25.2
Unscrew the two screws that fasten the
pressure switch to the back of combustion
chamber.
Remove the two silicone tubes.
Ensure tubes are connected correctly (Fig.
87) avoiding kinks.
Replace in reverse order ensuring that the
- tapping is connected to the tube
terminating inside the case and the +
tapping is connected to the tube terminating
at flue ring (Fig. 87 and 94).
TO REMOVE/REPLACE THE PUMP
(Fig. 88)
Remove the front panel from the outer
casing (sect. 7.3) and lower the instrument
panel (sect. 7.16.2 & 3).
Remove lower grill right side of the casing
(sect. 5.4.2 & 5), lower the electric box
(sect. 7.16.2 & 3).
36
7.25.3 Close the on/off valves on the heating
circuit and drain at drain point water from
the boiler (Fig. 93).
7.25.8
IMPORTANT:
Make sure that the arrow that indicates the
direction of flow aims from the bottom upwards.
7.25.4
7.25.5
7.25.6
7.25.7 Replace in reverse order
Fig. 78
Remove the terminal covers and detach the
supply wires (Fig. 88).
Unscrew the-two hexagonal nuts that fasten
the pump to its pipes and remove the pump.
NOTE: It may be necessary to loosen the
flow pipe at the heat exchanger to replace
the pump gaskets.
Always use new seals when re-fitting new
pump.
7.25.9 Replace wires and cover ensuring that
7.25.10 Refill the heating system as described in
7.26
7.26.1
7.26.2
7.26.4
7.26.5
7.26.6
connection wire br=L and bl=N.
the sect. 6.4 & 5 and check for leaks
TO REMOVE/REPLACE THE DIVERTER
VALVE (Fig. 89)
Remove the front panel from the outer
casing, lower the instrument panel (sect.
7.16.2 & 3).
Remove lower gratin; (sect. 5.42).
Close the on/off valves for the heating
circuit and the hot water circuit. Drain the
boiler at drain point (Fig. 93) and drain hot
water from the lowest hot water tap and
drain point on DHW inlet cock (Fig. 46).
Unscrew the five nuts that connect the
diverter valve and pull it out from boiler
being careful not to damage the wires.
Pull off circlip securing microswitches to
diverter valve.
If replacing microswitch assembly use a
screw-driver to prise off the protective cover
of the microswitches.
Fig. 79
Fig. 82
7.26.7
7.26.8
7.26.9
7.27
7.27.1
7.27.2
7.27.3
7.27.4
Detach the wires that are connected to this.
Remember that they must subsequently be
reconnected to the same terminals (Fig. 94).
Replace in reverse order. Always use new
seals.
Fill the boiler as described in (sect. 6.4 & 5)
and check for leaks.
TO REMOVE/REPLACE THE CENTRAL
HEATING AND/OR HOT WATER CONTROL
THERMISTOR
Remove the front panel from the outer
casing (sect. 7.3) and lower the instrument
panel (sect. 7.162).
Remove left/right side of casing (sect. 5.4).
Remove the wires that connect the
thermistor (Fig. 81).
Close the on/off valves for the heating
circuit and the hot water circuit. Drain the
boiler at drain point (Fig. 93) and drain hot
water from the lowest hot water tap and
drain point on DHW inlet cock (Fig. 46).
7.27.5
Undo the nut and withdraw the sensor
(Fig. 81) from its pocket.
37
7.27.6
Fig. 62
Replace in reverse order.
7.20
TO REMOVE/REPLACE THE CENTRAL
HEATING EXPANSION VESSEL
In the unlikely event of failure of the central
heating expansion vessel it is recommended
a suitable expansion vessel be fitted external to the boiler. It should be positioned on
the return pipe and as close to the boiler as
possible (Fig. 7).
However, if it is necessary to replace the
central heating expansion vessel the boiler
must be removed from the wall as follows.
Fig. 83
7.28.1
7.28.2
7.28.3
7.28.4
7.28.5
7.28.7
7.28.8
7.28.9
Remove the front panel from the outer cas-
ing (sect. 7.3) and lower the instrument
panel (sect. 7.16.2 & 3) and remove the
control box cover (sect. 7.31.213).
Remove the lower grating (sect. 54.2).
Remove the two sides of the casing (sect.
5.4.5).
Close the on/off valve on the domestic cold
water, central heating and gas supply.
Drain domestic water from the lowest hot
water tap and drain point on DHW inlet
cock (Fig. 46).
Drain the boiler (Fig. 93).
Disconnect all pipework connected to boiler.
Disconnect mains cables and any other con-
nections (room thermostat, programming
clock).
Remove the duct proceeding in reverse
order as described in (sect. 5.5 or 5.7).
Remove the 2 lower coach bolts and
release 2 top coach bolts then remove boiler from the wall.
38
7.28.10 Unscrew the nut that connects the expansion vessel and remove it (Fig. 91).
7.28.11 Remove the screw supporting expansion
vessel (Fig. 91).
7.28.12 Remove the expansion vessel.
7.28.13
Replace all the components in reverse order
using new seals.
7.28.14 Fill the system as described in the sect. 6
and check for leaks.
7.29
TO REMOVE/REPLACE THE AIR
AUTOMATIC VENT (Fig. 92)
7.29.1
Remove the front panel from the outer casing and the combustion chamber front
cover (sect. 7.3 & 4).
7.29.2 Remove the lower grating (sect. 5.4.2)
7.29.3
Remove the fan assembly and the flue
7.29.4
Close the on/off valves for the central
heating circuit and drain the water from the
boiler drain point (Fig. 93).
7.29.5
7.29.6
7.29.7
7.29.8
7.30
7.30.1
7.30.2
7.30.3
7.30.4
7.31
7.31
Unscrew and remove the plastic cap that
protects the valve vent hole.
Disconnect-the unions 1 and 2 (Fig. 92)
slightly turn and remove pipe and auto air
vent.
Replace in reverse order, using new seals.
Fill the system as described in the
sect. 6.4 & 5 and check for leaks.
TO REMOVE/REPLACE THE PRESSURE
RELIEF VALVE (Fig. 93)
Remove the front panel (sect. 7.3) and the
lower grating (sect. 5.4.2) from the outer
casing, lower the instrument panel (sect.
7.16.2 & 3).
Remove right side of the casing (sect. 5.4.5).
Close the on/off valves for the heating
system and drain the water from the drain
point (Fig. 93).
Unscrew the screw from its body, clean or
replace. Replace in reverse order.
Fill the system as described in the
(sect. 6.4 & 6.5) and check for leaks.
TO REMOVE/REPLACE TIME CLOCK
(Fig. 88/A)
Remove the front panel from the outer
.1
casing (sect. 7.3) and lower the instrument
panel (sect. 7.16.2 and 3).
Fig. 88
7.31.6
7.32
7.32.1
7.32.2
7.32.3
7.32.4
Replace in reverse order (ensure all
electrical connections are made correctly)
(Fig. 88/A).
TO REMOVE/REPLACE THE IGNITION
BOARD
Remove front casing (sect. 7.3) lower the
instrument panel (sect. 7.16.2 & 3).
Remove the screw from the ignition box cover.
Detach the ignition box from its base on the
gas valve.
Remove the PCB cover and detach the
connectors from the board.
7.31.2
7.31.3
7.31.4
7.31.5
Fig. 87
Remove control box cover (sect. 7.23.2).
Remove control board (sect. 7.23.2) from
panel.
Remove two clips securing the timer,
Carefully remove the four wires connecting
timer by pulling spade connectors from
timer.
7.32.5
Replace in reverse order (ensure all
electrical) connections are made correctly.
Fig. 91
Fig. 93
Section 8 FAULT FINDING CENTRAL HEATING
Switch on
Select “Winter”
Central Heating
Stat to maximum
Ensure external controls calling for heat (Room Stat/Time Clock/TRV
FAULT FINDING DOMESTIC HOT WATER
Before continuing it may be necessary to see Central Heating Fault Finding.
Select only (Summer) Domestic Hot Water.
Open Domestic hot tap close to appliance.
42
SECTION
9 ELECTRICAL SYSTEM DIAGRAM
Fig. 94
44
45
46
SECTlON IO
EXPLODED PARTS DIAGRAM
RAVENHEAT RSF 82 E - RSF 82 ET FANNED COMBI BOILER
SHORT LIST OF SPARE PARTS
Pos.
1
2
4
5
8
9
10
13
15
16
17
18
18.1
21
22
22.1
25
25.1
26
28
29
30
31
32
33
36
37
39
45
46
47
48
Ravenheat
Part. No.
0014FR006005/0
0012COM06005/0
0012P0T05005/0
0007TER0301O/O
5027055 .
0007TER05005/0
0014VETO1005/0
0001 CAP05005/0
5021103
0012CIR05005/0
0014MAN06015/0
0012CIR05016/0
0012GEN0501010
5003066
0008VALO3005/0
0008VALO5005/0
5012114
0003PIL05010/0
0002SCA0501O/O
0014REGO1005/0
5003655
5015015
5018025
5018030
1012VEN01006/0
5018046
5095025
0012FUSO5015/0
5023020
0014GUA01020/0
0001CAM05010/0
5012096
G.C.
Part. No.
E23-711
E23-712
E23-714
371267
372842
E23-715
371268
E23-717
372845
E24-627
E23-718
E24-628
372849
173100
372894
E23-719
371271
372854
372888
372851
372867
378864
372853
E23-720
372855
371277
372856
Description
Instrument panel - TIMER MODEL
Main switch
DHW / C.H. Potentiometer
Overheat thermostat
Water gauge
D.H.W. / C.H. Sensor
Sight glass
Flue gas exhaust hood
Fuse 315 mA
Printed control board
Knob
Printed ignition board
Honeywell printed ignition board
Combustion chamber cover
Gas valve
Honeywell gas valve
Pilot burner
Pilot burner for Honeywell gas valve
Heat exchanger
Water flow regulator
Connecting pipe to air purge
Air purge valve
Gasket 18.5 x 11.6 x 2
Gasket24x15x2
Fan 82 ET
Gasket 30 x 22 x 2
Insulation pads set
Internal fuse 2A
Depression chamber pilot seal
Flue gasket
Depression chamber
Nozzle 0,27 for natural gas
!
48
Ravenheat
Part. No.
G.C.
Part. No.
Description
50
51
62
64
65
68
69
70
79
80
81
82
83
85
87
89
93
95
97
100
103
105
106
02
05
5021050
5021048
5012210
372892
372857
372862
0001TEL05005/0
5018046
0003BRU05015/0
0008VALO3010/0
0013GUA03035/0
0005PRE03010/0
5009080
0013GUAOlO45/0
5003283
0008VAL01017/0
0012FUSO5020/0
5021312
0005PRE05015/0
5094110
5094125
5023016
5009057
0001 DIA05005/0
Tmb192
5094130
5012051
5012052 372899
372864
372-866
371298
371273
371310
372896
371274
372874
E23-723
E23-724
372875
E24-629
372877
372878
372879
372880
E23-725
371258
371259
371257
Ignition electrode
Cable for electrode
Nozzle 1,35 for natural gas
Frame
Seal
Main burner
3-way valve
Seal 32 x 32 x 2 gas valve
Low water pressure switch
Circulation pump
Gasket 48 x 42 x 1
Brass manifold
Safety relief valve (3 bar)
Internal fuse 4A
Nylon tubes from pressure switch
Pressure switch
Elbow header
Flue extension
Flue duct and terminal complete
Expansion tank
Air restriction ring dm 79
Digital timer
Vertical flue terminal complete
Diaphragm for 3-way valve
Microswitch for 3-way valve
.
duct
complete
NOTES
Chartists Way, Morley, Leeds, LS27 9ET.
Telephone: (0113) 252 7007
Tfax: (0113) 238 0229
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