Ravenheat RSF 84E User guide

ELECTRONIC IGNITION - AUTOMATIC MODULATING BOILER
FANNED COMBI
RSF 84E - RSF IOOE
RSF 84ET - RSF IOOET
WITHOUTTIMER
RSF 84E G.C. No47 581 27A
RSF 1OOE G.C. N
o
47 581 25A
NATURAL GAS (G 20) AND PROPANE (G 31)
Tested, certified and
service listed
Listed by The United Kingdom Water
Fitting Byelaws Scheme
WITH TIMER
RSF 84ET G.C. No47 581 28A
RSF 1OOET G.C. N
o
47 581 26A
NATURAL GAS (G 20) AND PROPANE (G 31)
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 [phone]

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
heating 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 accommodation. 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 appli-
ance, 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 cir-
culation in the boiler during D.H.W. supply. This gives maximum heat exchange, improved effi-
ciency 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 HARMFUL TO 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 inter-
preted 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
environment components should be re-cycled.
3

SECTIONS:
1
2
PAGE
3
4
5
6
7
8
9
1O
11.
12
TABLE OF CONTENTS
INTRODUCTION
DESIGN PRINCIPLES AND
OPERATING SEQUENCE
TECHNICAL DATA
GENERAL REQUIREMENTS
INSTALLATION
COMMISSIONING
SERVICING INSTRUCTIONS
FAULT FINDING
ELECTRICAL SYSTEM DIAGRAM
INSTALLATION INSTRUCTIONS FOR TWIN FLUE
EXPLODED PARTS DIAGRAM
LIST OF SPARE PARTS
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- D.H.W. sensor
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
30 -
Water pressure gauge
6
6
8
12
17
27
33
44
46
50
53
54
33 - Main switch
34 - C.H. Sensor
36 - Fan
37 - Expansion tank
38 - Sealed chamber
45 - Combustion chamber
50 - Flue gas exhaust hood
105 -Timer
106 - Air restriction ring

OPERATING
Fig. 2
KEY
1 - Heat exchanger
2 - Heat exchanger for D.H.W. water
3 - Burner
4 - Pilot burner
5 - Air restriction ring
7 - Electronic ignition
9 - Ignition electrode
12 - Modulating gas valve
15 - Heating control
16 - Hot water control
17 - Low water pressure switch
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
28 - Air pressure switch
29 - Circulating pump
30 - Water pressure gauge
36 - Fan
37 - Expansion tank
38 - Sealed chamber
60 - Elbow header
61 - Twin header
62 - Straight header

SECTION 1 I NTRODUCTION
1.1
The Ravenheat boiler is for the use of cen-
tral and domestic hot water combined in
one unit.
It is fitted with an automatic domestic hot
water priority valve.
A (winter/summer) selec-
tor 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.
1.2 Fig. 1 Illustrates the general layout of com-
ponents.
Fig. 2 Illustrates the operating principles
described in section 2.
SECTION 2
2.1 DESCRIPTION OF CONTROL SYSTEM
AND SEQUENCE OF OPERATION
2.2 Domestic hot water mode
When the appliance is in rest mode with the
mains neon switch on. Switch the sum-
mer/winter switch in the position, mak-
ing sure the heating circuit is charged with
water (above 1 bar). When the domestic hot
water tap is turned on, the boiler will func-
tion in the following sequence:
2.2.1 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.
2.2.2 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.
2.2.3
When the electrode/sensor senses the sig-
nal of 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.
2.2.4 From the minimum gas rate setting the boil-
er 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 temper-
ature.
2.2.5 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
2.2.6
2.2.7
2.2.8
2.2.9
2.3
2.3.1
2.3.2
2.3.3
2.3.4
2.3.5
2.3.6
2.3.7
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 domes-
tic 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.
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 unaf-
fected by the anti-cycling device.
GENERAL FUNCTION
Central Heating Mode
A potentiometer is installed on the electric
circuit board 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 cham-
ber, thus sucking in combustion air, through
the inlet duct.
The boiler water temperature is automati-
cally controlled by a built in thermostat.
Interior space temperature is set by the
room thermostat to be installed in the heat-
ing system. The boiler already carries con-
nection terminals for this thermostat, as
well as for a timeclock. The burner will con-
tinue to operate until it is stopped by the
timer or one of the thermostats.
When the internal C.H. temperature sensor
intervenes the main burner shuts down. The
fan stops but the pump continues to oper-
ate.
When the room thermostats intervene the
main burner shuts down. The fan stops and
the pump turns off.
6

2.4
2.4.1
2.4.2
2.4.3
2.4.4
2.4.5
Domestic hot water mode
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 cen-
tral 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. ther-
mostat.
When D.H.W. is no longer called for the boil-
er automatically returns to the central heat-
ing mode.
Switch 33 in the (summer) position. The
boiler functions like an automatic gas hot
OVERALL DIMENSION
AVAILABLE PUMP HEAD
3.1 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.
3.1.2
3.1.3
3.2.1
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.
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.
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.
DIMENSIONS (mm)
PRESSUREDROP
ACROSS APPLIANCE
Fig. 5

SECTION 3 TECHNICAL DATA
TABLE 1
RSF 84E(T) NATURAL GAS (G 20) I2H
HEAT INPUT NET max
26.9 kW (91,800 Btu/h)
NOMINAL
mid 20.0 kW (68,250 Btu/h)
min 14.6 kW (49,800 Btu/h)
HEAT OUTPUT
max 24.58 kW (83,880 Btu/h)
NOMINAL
mid
17.6 kW (60,060 Btu/h)
min
11.5 kW
(39,250 Btu/h)
GAS RATE max 2.6 m
3
/h
(91 .8 ft
3
/h)
AFTER 10 minutes
mid
1.9 m
3
/h (67.1 ft
3
/h)
min
1.3 m
3
/h (45.9 ft
3
/h)
INLET PRESSURE 20 mbar (8.0 in w.g.)
BURNER PRESSURE
max
8.1 mbar (3.2 in w.g.)
mid
4.0 mbar (1.6 in wg.)
min
1.5 mbar (0.6 in w.g.)
GAS CONTROL VALVE
SIT
837 TANDEM
MAIN BURNER POLIDORO MOD/NP
MAIN BURNER INJECTORS N. 13X1.35
PILOT BURNER
POLIDORO PA525F
PILOT INJECTOR 0.27 (MARKING) 2 HOLES
ELECTRICAL SUPPLY
230V-50HZ
POWER CONSUMPTION
160W
EXTERNAL FUSE RATING 3A
INTERNAL FUSE RATING
315mA - 2A - 4A (20mm to BS4265)
DRY WEIGHT
48 kg (106 Lbs)
WATER CONTENT D.H.W.
0.5 Lts. (0.9 pints)
WATER CONTENT C.H.
3.0 Lts. (5.3 pints)
GAS SUPPLY CONNECTION 15 mm compression isolating valve
FLOW CONNECTION C.H.
22 mm compression isolating valve
RETURN CONNECTION C.H.
22 mm compression isolating valve
INLET CONNECTION D.H.W.
15 mm compression isolating valve
OUTLET CONNECTION D.H.W.
15 mm compression
MAXIMUM PERMISSIBLE COLD WATER CAPACITY WITHOUT ADDITIONAL EXPANSION VESSEL
110 LITRES
SAFETY DISCHARGE PIPE 15 mm 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 oC
MIN 45 oC
DESIGN FLOW RATE 1057 I/h (236 gals) 20 oC RISE
MINIMUM FLOW RATE C.H. 494 Lts/h (109 gals/h)
D.H.W. FLOW RATE 30 oC rise 11.7 I/min (2.6 gals/min)
D.H.W. FLOW RATE 35 oC rise 10.1 I/min (2.24 galslmin)
D.H.W. FLOW RATE 40
o
C rise 8.8 l/min (1.96 galsimin) 10 oC inlet temperature
D.H.W. TEMPERATURE
max 65 oC
min 35 oC
D.H.W. PRESSURE
max 10 bar (147 p.s.i.)
min 0.8 bar (11.8 psi.)
To obtain 95% heat input 1.0 bar (14.5 p.s.i.)
D.H.W. MINIMUM FLOW RATE 3 I/m (0.66 gals/min)
FLUE OUTLET NOM. DIA. 100 m/m specially supplied with boilers
DESTINATION: AT - DK - FI - IE - IT - PT - ES - SE - CH - GB
1
Nominal Efficiency
FLUE TYPE - C 12 - C 32 - C 52
Efficiency at 30% Load
CATEGORY I2H NOX 2
91.4% NET
88.1% NET
8

TECHNICAL DATA
TABLE 2
RSF lOOE(T) NATURAL GAS (G 20) I 2H
HEAT INPUT NET max
NOMINAL
mid
32.79 kW
22.79 kW
(111,900 Btu/h)
(77,700 Btu/h)
HEAT OUTPUT
NOMINAL
GAS RATE
AFTER 10 minutes
min
max
mid
min
max
mid
13.96 kW
29.66 kW
20.3 kW
11.2 kW
3.2 m
3
/h
2.3 m3/h
(101,221 Btu/h)
(69,280 Btu/h)
(38,220 Btu/h)
INLET
BURNER P
PRESSURE
RESSURE
min
20 mbar
max
1.4 m
3
/h
(8.0 in wg.)
12.5 mbar
POWE
EXTE
5.0 mbar
1.4 mbar
637 TANDEM
min
GAS CONTROL VALVE
SIT
MAIN BURNER POLIDORO MOD/NP
MAIN BURNER INJECTORS N. 15X1.25
PILOT BURNER
POLIDORO PA525F
PILOT INJECTOR 0.27 (MARKING) 2 HOLES
ELEC
INTERNAL FUSE RATING
DRY WEIGHT
WATER CONTENT D.H.W.
WATER CONTENT C.H.
GAS SUPPLY CONNECTION
FLOW CONNECTION C.H.
RETURN CONNECTION C.H.
INLET CONNECTION D.H.W.
OUTLET CONNECTION D.H.W.
TRICAL SUPPLY
230 V - 50HZ
R CONSUMPTION 160W
RNAL FUSE RATING 3A
mA - 2 A - 4 A (20 mm to BS4265)
(116.6 Lbs)
Lts. (1.2 pints)
Lts. (5.2 pints)
isolating
valve
315
53 kg
0.7
3.5
15 mm compression
22 mm compressio
22 mm compressio
15 m
15m
(4.9 in w.g.)
(1.96 in w.g.)
(0.56 in w.g.)
n isolating valve
n isolating valve
m compression isolating valve
m compression
MAXIMUM PERMISSIBLE COLD WATER CAPACITY WITHOUT ADDITIONAL EXPANSION VESSEL
11O LITRES
SAFETY DISCHARGE PIPE
15 mm copper pipe
SEALED WATER SYSTEM C.H. SYSTEM
MAX PRESSURE 2.5 bar (35.6 p.s.i.)
MINIMUM WORKING PRESSURE 0.5 bar (7.35p.s.i)
8 LITRES EXPANSION VESSEL PRE-CHARGE-PRESSURE 0.5 bar (7.35 p.s.i.)
CENTRAL HEATING OPERATING TEMPRATURE MAX 85
O
C
DESIGN FLOW RATE 1275 I/h (283 gals) 20
O
C RISE
MIN 45 oC
MINIMUM FLOW RATE (106 gals/h)
D.H.W. FLOW RATE 30 oC rise 14.2 I/min (3.16 gals/min)
D.H.W. FLOW RATE 35 oC rise 12.2 I/min (2.7 galsimin)
D.H.W. FLOW RATE 40 oC rise I0.6 I/min (2.4 gals/min) 10oC inlet temperature
D.H.W
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 1.7 bar (24.7 p.s.i.)
D.H.W. MINIMUM FLOW RATE 3 I/m (0.66 gals/min)
FLUE OUTLET NOM. DIA. 100 m/m specially supplied with boilers
DESTINATION: AT - DK - FI - IE - IT - PT - ES - SE - CH - GB Nominal Efficiency
90.47% NET
FLUE TYPE - C12 - C32 C52 Efficiency at 30% Load 89.4% NET
CATEGORY I2H NOX 2
9

TECHNICAL DATA
TABLE 3
RSF 84E(T) PROPANE GAS (G 31) I 3P
HEAT INPUT NET max 26.9 kW (91,800 Btu/h)
NOMINAL
mid 20.0 kW (68,200 Btu/h)
min 13.5 kW
(46,000 Btu/h)
HEAT OUTPUT
max
24.58 kW (83,880 Btu/h)
NOMINAL
mid
17.6 kW (60,060 Btu/h)
min
10.7 kW (36,506 Btu/h)
GAS RATE max
1.05 m3/h
(37,07 ft
3
/h)
AFTER 10 minutes
mid
0.82 m
3
/h (28,95 ft
3
/h)
min
0.52 m
3
/h (18,36 ft
3
/h)
INLET PRESSURE 37 mbar (14.85 in w.g.)
BURNER PRESSURE
max
20.5 mbar (8.23 in wg.)
mid
14.8 mbar
(5.94 in w.g.)
min
4.4 mbar (1.77 in w.g.)
GAS CONTROL VALVE
SIT
837 TANDEM
MAIN BURNER POLIDORO MOD/NP
MAIN BURNER INJECTORS N. 13X0.85
PILOT BURNER
POLIDORO PA525F
PILOT INJECTOR 0.22
(MARKING) 1 HOLE
ELECTRICAL SUPPLY
230V-50HZ
POWER CONSUMPTION 160W
EXTERNAL FUSE RATING 3A
INTERNAL FUSE RATING 315mA-2A-4A (20mmtoBS4265)
DRY WEIGHT
48 kg (106 Lbs)
WATER CONTENT D.H.W.
0.5 Lts. (0.9 pints)
WATER CONTENT C.H.
3.0 Lts. (5.3 pints)
GAS SUPPLY CONNECTION 15 mm compression isolating valve
FLOW CONNECTION C.H.
22 mm compression isolating valve
RETURN CONNECTION C.H. 22 mm compression isolating valve
INLET CONNECTION D.H.W.
15 mm compression isolating valve
OUTLET CONNECTION D.H.W.
15 mm compression
MAXIMUM PERMISSIBLE COLD WATER CAPACITY WITHOUT ADDITIONAL EXPANSION VESSEL
110 LITRES
SAFETY DISCHARGE PIPE 15 mm 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 oC
MIN 45 oC
DESIGN FLOW RATE 1057 l/h (236 gals) 20 oC RISE
MINIMUM FLOW RATE C.H. 494 Lts/h (109 gals/h)
D.H.W. FLOW RATE 30 oC rise 11.7 l/min (2.6 galslmin)
D.H.W. FLOW RATE 35 oC rise 10.1 l/min (2.24 gals/min)
D.H.W. FLOW RATE 40
o
C rise 8.8 l/min (1.96 gals/min) 10 oC inlet temperature
D.H.W. TEMPERATURE
max 65
o
C
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 p.S.i.)
D.H.W. MINIMUM FLOW RATE 3 l/m (0.66 galS/min)
FLUE OUTLET NOM. DIA. 100 m/m specially supplied with boilers
DESTINATION: BE - FR - IE - PT - ES - GB - CH Nominal Efficiency 91.4% NET
FLUE TYPE - C 12 - C 32 - C 52
Efficiency at 30% Load 88.1% NET
CATEGORY I3P NOX 2
10

TECHNICAL DATA
TABLE 4
RSF lOOE(T) PROPANE GAS (G 31) I 3P
HEAT INPUT NET max
32.82 kW
NOMINAL
(112,000 Btu/h)
mid
21.39 kW
(73,000 Btu/h)
min
14.00 kW (47,800 Btu/h)
HEAT OUTPUT max
29.66 kW
NOMINAL
(101,221 Btu/h)
mid
19.1 kW (65,170 Btu/h)
min
11.2 kW (38,220 Btu/h)
GAS RATE max
1.3 m3/h
AFTER 10 minutes
(45.9 ft
3
/h)
mid
0.8 m
3
/h (28.2 ft
3
/h)
min
0.6 m
3
/h (21.2 ft
3
/h)
INLET PRESSURE 37 mbar (14.85 in w.g.)
BURNERPRESSURE
max
23.5 mbar
(9.43 in w.g.)
mid
9.3 mbar
(3.73 in w.g.)
min
3.7 mbar (1.48 in w.g.)
GAS CONTROL VALVE
SIT
837 TANDEM
MAIN BURNER POLIDORO MOD/NP
MAIN BURNER INJECTORS N. 15X0.85
PILOT BURNER
POLIDORO PA525F
PILOT INJECTOR 0.22 (MARKING) 1 HOLE
ELECTRICAL SUPPLY 230V-50HZ
POWER CONSUMPTION 160W
EXTERNAL FUSE RATING 3A
INTERNAL FUSE RATING
315mA-2A-4A (20mmtoBS4265)
DRY WEIGHT 53 kg (116.6 Lbs)
WATER CONTENT D.H.W.
0.7 Lts. (1.2 pints)’
WATER CONTENT C.H. 3.5 Lts. (5.2 pints)
GAS SUPPLY CONNECTION 15 mm compression isolating valve
FLOW CONNECTION C.H. 22 mm compression isolating valve
RETURN CONNECTION C.H. 22 mm compression isolating valve
INLET CONNECTION D.H.W.
15 mm compression isolating valve
OUTLET CONNECTION D.H.W. 15 mm compression
MAXIMUM PERMISSIBLE COLD WATER CAPACITY WITHOUT ADDITIONAL EXPANSION VESSEL
110 LITRES
SAFETY DISCHARGE PIPE 15 mm 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 oC
MIN 45 oC
DESIGN FLOW RATE 1275 I/h (283 gals) 20 oC RISE
MINIMUM FLOW RATE C.H. 481 Lts/h (106 gals/h)
D.H.W. FLOW RATE 30 oC rise 14.2 l/min (3.16 gals/min)
D.H.W. FLOW RATE 35 oC rise 12.2 I/min (2.7 gals/min)
D.H.W. FLOW RATE 40 oC rise 10.6 l/min (2.4 gals/min) 10 oC inlet temperature
D.H.W.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 1.7 bar (24.7 p.s.i.)
D.H.W. MINIMUM FLOW RATE 3 I/m (0.66 gals/min)
FLUE OUTLET NOM. DIA. 100 m/m specially supplied with boilers
DESTINATION: BE - FR - IE - PT - ES - GB - CH Nominal Efficiency
FLUE TYPE C 12 - C 32 - C 52
Efficiency at 30% Load
CATEGORY I 3P
NOX 2
90.47% NET
89.4% NET
11

SECTION 4 GENERAL REQUlREMENTS
4.0 SAFETY
Gas Safety (Installation and Use)
Regulations, 1994 and amended 2000.
It is law that all gas appliances are installed
and serviced by a CORGI registered
installer in accordance with the above regu-
lations and these installation instructions.
All CORGI registered installers carry a
CORGI I.D. card and have a registration
number. Both should be recorded in your
boiler log book. You can check your installer
by calling CORGI direct on: 01256 732300.
Failure to install appliances correctly could
lead to prosecution. It is in your own inter-
est, and that of safety, to ensure the law is
complied with. Check the boiler and flue is
the correct type for installation.
The installation of the boiler MUST be in
accordance with the latest I.E.E. (BS 7671)
Wiring Regulations, local building regula-
tions, bye-laws of the local water authority,
the building regulations and the Building
Standards (Scotland) and any relevant
requirements of the local authority.
4.1
GENERAL INFORMATION
Both the user and the manufacturer rely heav-
ily on the installer, whose job it is to install the
combination boiler and connect it to a correct-
ly designed heating system. Acquaint yourself
with the British Standards concerning instal-
lation requirements. If you need advice on any
points your Ravenheat Technical Services
Office would be pleased to help. It is recom-
mended that tools suitable for brass fittings
are used, and have a capability to accommo-
date hexagon sizes up to 50 mms.
CODES OF PRACTICE/Ref: Documents
Detailed recommendations are contained in
the following British Standard Codes of
Practice:
BS. 6891
Low pressure installation pipes
BS. 6798
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 domestic purposes
(2nd Family Gases).
BS. 544O: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).
Health & Safety Document No. 635
The Electricity at Work Regulations, 1989.
IMPORTANT. These appliances are CE cer-
tificated for safety and performance. It is,
therefore, important that no external control
devices e.g. flue dampers, economisers
etc., are connected to this appliance unless
covered by these directly Installation and
Servicing Instructions or as otherwise rec-
ommended by Ravenheat in writing. If in
doubt please enquire.
Any direct connection of a control device
not approved by Ravenheat could invalidate
the certification and the normal appliance
warranty. It could also infringe the Gas
Safety regulations and the above regula-
tions.
NOTE: The Ravenheat combination boiler
has been tested an examined by Bg Tech-
nology Certification Services and is certi-
fied to comply with PrEN 483 and BS EN
625.
Manufacturers instructions must NOT be
taken in any way as overriding statutory
obligations.
If in doubt on any point please consult
Ravenheat Manufacturing Ltd.
4.2
LOCATION OF BOILER
4.2.1
Siting of Ravenheat RSF Combi Boiler must
be as follows. The position of installation
should be within the building, unless other-
wise protected by suitable enclosure.
Adequate space for installation, servicing
and air circulation around boiler must be
allowed for.
The Ravenheat RSF 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 com-
bustible wall subject to the requirements of
the Local Authority and Building Regula-
tions.
4.3
CLEARANCES AROUNDTHE
APPLIANCE
4.3.1
The following minimum free spaces, re-
quired for installation inspection and servic-
ing, must be left around the boiler.
RSF 84E (T)
RSF 1OOE (T)
Above 125 mm Above 150 mm
Below 100 mm Below 100 mm
Front 450 mm Front 450 mm
Side 75 mm Side 5 mm
25 mm in front when installed in a cupboard
12

4.4 IMPORTANT NOTICE ply is available both to the boiler and the
4.4.1
other appliances when they are in use at
If the combination boiler is to be fitted in a the same time.
timber framed building it should be fitted in
accordance with the British Gas Publication
4.6
FLUE SYSTEM
Guide for Gas installations in Timber Frame
Housing Reference IGE/UP/7/1998. If in
4.6.1
The terminal should be located where dis-
doubt advice must be sought from the local persal of combustion products is not imped-
gas supplier. The combination boiler may be
ed, and with due regard for the damage or
installed in any room or internal space, discolouration that might occur to building
although particular attention is drawn to the products in the vicinity (see fig. 6).
requirements of the current I.E.E. Wiring The terminal must not be located in a place
Regulations and in Scotland the electrical where it is likely to cause a nuisance.
provisions of the Building Regulations The terminal must not be closer than 25
applicable in Scotland, with respect to the mm. (1 in) to any combustible material. For
installation of the combination boiler in a protection of combustibles, refer to BS
room or internal space containing a bath or
5440.1.
shower.
Where a flue terminal is installed less than
Where a room sealed appliance is installed 1000 mm. from a plastic, or painted gutter;
in a room containing a bath or shower, any or 500 mm from painted eaves, an alumini-
electrical switch or appliance control utilis- um shield 1000 mm. long, should be fitted
ing mains electricity should be so situated to the underside of the gutter or painted
that it cannot be touched by a person using
surface.
a bath or shower. The flue must be installed in accordance
A compartment used to enclose the combi- with the recommendations of BS 5440:
nation boiler MUST be designed and con-
Part 1.
structed specifically for this purpose. An
existing cupboard, or compartment, may be IMPORTANT NOTICE: if the flue terminates less than
used provided it is modified accordingly. 2 M. above a balcony, above the ground, or above a
Samples of the RSF 84E/84ET - RSF flat roof to which people have access, then a suitable
1OOE/1OOET combination boilers have terminal guard must be fitted.
been examined by B.G.Technology Notified Fit only recommended flue terminal guard by secur-
Body, and are certified to comply with the ing concentrically around terminal with screws.
essential requirements of the Gas Appli-
ance Directive 90/396/EEC, the Low Volt- Available on request from:
age Directive 72/23/EEC and shows com- RAVENHEAT Manufacturing Ltd
pliance with the Electro Magnetic Compati- Chartists Way
bility Directive 89/336/EEC and are there-
Morley, Leeds, West Yorkshire
fore permitted to carry the CE Mark. ENGLAND LS27 9ET - U.K.
Tel. [phone]
The appliance has been tested and
approved by the WRc as meeting the IMPORTANT: The following notes are
requirements of G3 and L of the Building intended for general guidance.
regulations and water Bylaws Scheme -
Approved Products. The boiler MUST be installed so that the
4.5
GAS SUPPLY
terminal is exposed to external air.
4.51
It is important that the position of the termi-
A gas meter is connected to the service pipe nal allows the free passage of air across it
by the Local Gas Supplier or a contractor. at all times.
An existing meter should be checked prefer-
ably by the gas Region to ensure that the Minimum acceptable spacing from the ter-
meter is adequate to deal with the rate of minal to obstructions and ventilation open-
gas supply required for all appliances it ing are specified in Fig. 6.
serves. Installation pipes should be fitted in
accordance with BS 6891. Pipework from Note positions: Due to the terminal
the meter to the boiler must be of adequate design, installation is possible with clear-
size (22 mm) min. To within at least 3 metre ances less than those specified in BS 5440,
Of the boiler (15 mm) min. can then be used Part 1.
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 sup-
13

Fig. 6
4.6.3
Terminal position for fan assisted boiler
(minimum distance)
A
Directly below an open window or other
opening (e.g. air brick)
B - Below gutters, soil pipes or drain pipes
C - Below eaves
D - Below balconies or car port roof
E - From vertical drain pipes and soil pipes
F - From internal or external corners
G - Above ground or below balcony level
H - From a surface facing a terminal
I - From a terminal facing a terminal
J From an opening in the car port (e.g. door
window) into dwelling.
NOTE:
The flue must be terminated in a place not
likely to cause a nuisance.
FLUE ALTERNATIVES
4.6.2
A concentric vertical flue kit is available for
flueing applications up to a maximum
height of 4 metres vertically. For further
details see vertical flue installation instruc-
tions (sect. 5.7.12).
A twin flue system is also available. For fur-
ther details see twin flue installation
instruction (sect. 10).
4.7
4.7.1
AIR SUPPLY
The following notes are intended for gener-
al guidance.
The room sealed fan flued boiler does not
require a permanent air vent for combus-
tion air supply.
Where installed in a cupboard or compart-
ment ventilation is not required.
4.8
4.8.1
WATER CIRCULATION (central heating)
Detailed recommendation are given in BS
6798:1987/5449:1990 (for smallbore and
microbore central heating systems). The fol-
lowing notes are given for general guidance.
4.8.2 Pipework
Copper tubing to BS 2871 1 .1 .1971 is rec-
ommended 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.
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).
Fig.
6A
14

If the volume of circulating water is too low,
the boiler water temperature will rise too
rapidly. This could cause noise in the sys-
tem or even cause the overheat cut off to
lockout.
4.8.4 Draining tap
These must be located in accessible posi-
tions to permit the draining of the whole
system. The taps must be at least 15 mm
nominal size and manufactured in accor-
dance with BS 2870 1980.
4.8.5 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 sys-
tem.
4.8.6
The appliance has an integral sealed
expansion vessel to accommodate the
increase of water volume when the system
is heated. It can accept up to 1.5 gal (7 Its)
of expansion water. If the appliance is con-
nected to a system with an unusually high
water content, calculate the total expansion
and add additional sealed expansion
capacity as appropriate (Fig. 7).
In general modern systems will present no
problem.
Fig. 7
located, between the cistern and the auto-
matic air vent. The stop valve may remain
open during normal operation of the sys-
tem, 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 pres-
sure booster pump if required and if neces-
sary an automatic pressure reducing valve
or flow restrictor. The cistern should be
supplied through a temporary connection
from a service pipe or cold water distribut-
ing pipe. The unit may remain permanently
connected 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.
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.
4.8.7
Mains water feed: central heating
There must be no direct connection to the
mains water supply, even through a non-
return 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 fol-
lowing methods. Through a cistern used for
no other purpose, via a ballvalve perma-
nently connected directly to a service pipe
and/or cold water distributing pipe. The sta-
tic 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
4.8.8
a) A stop valve complying with the require-
ments of BS 1010 Part 2 (the temporary
hose from the draw off tap shall be con-
nected 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 be at least l/2" in BSP nominal size and be
Filling Loop designed for this method of in accordance with BS 2879.
filling the system. Available from your
supplier.
4.8.9 lnstallation to an existing central heating
system
PROVISIONS FOR MAKE UP WATER The combination boiler is designed to oper-
(Fig. 7)
ate on a sealed system only. Therefore if
Provision can be made for replacing water
loss from the system either.
the existing system is of the open water
type it will have to be modified to comply
A) from a manually filled made up bottle with BS 5376 Part 2.
with a readily visible water level. The bottle Before installing a new combination boil-
should be mounted at least 150 mm (6 in) er to an existing system flush out the old
above the highest point of the system and system with a recommended descaling
be connected through a non return valve to
agent.
the return side of the heating system. Also check pipework and renew any corrod-
B) Where fitting a make up vessel would be ed pipework or fittings, Valve glands must
difficult re pressurisation of the system can be repacked or replaced wherever neces-
be done. See section on FILLING. sary and any defective controls exchanged.
If the capacity of the central heating system
should exceed 110 litres, an additional 4.8.10
Hard water areas
vessel may be installed if required on the If the area of installation is recognized as a
return to the combination boiler from the hard water, it is recommended that a suit-
heating system (Fig. 7). Guidance on ves- able water treatment device is installed in
sel sizing is given in (Table 5). the mains.
Reference should be made to British Gas The water hardness can be determined by
Publications << Material and Installation using the standard test paper or by refer-
Specifications for Domestic Central Heat- ring to local water authority.
ing and Hot Water >>. Draining taps should
SIZING OF ADDITIONAL EXPANSION VESSELS:TABLE 5
Safety
valve setting (bar)
3.0
Vessel charge
pressure (bar) 0.5
1.0
Initial system
pressure (bar) 0.5
1.0 1.5 2.0 1.0 1.5 2.0 1.5 2.0
Total water
content Of System
EXPANSION VESSEL VOLUME (LITRES)
Litres
25 2.1 3.5 6.5 13.7 2.7 4.7 10.3 3.9 8.3
50 4.2
7.0 12.9 27.5 5.4 9.5 20.6 7.8 16.5
75
6.3 10.5 19.4 41.3 8.2 14.2 30.9 11.7 24.8
100 8.3 14.0 25.9 55.1 10.9 19.0 41.2 15.6 33.1
125 10.4 17.5 32.4 68.9 13.6 23.7 51.5 19.5 41.3
150 12.5 21.0 38.8 82.6 16.3 28.5 61.8 23.4 49.6
175 14.6 24.5 45.3 96.4 19.1 33.2 72.1 27.3 57.9
200 16.7 28.0 51.8 110.2 21.8 38.0 82.4 31.2 66.2
225 18.7 31.5 58.3 124.0 24.5 42.7 92.7 35.1 74.5
250 20.8 35.0 64.7 137.7 27.2 47.5 103.0 39.0 82.7
275 22.9 38.5 71.2 151.5 30.0 52.2 113.3 42.9
91.0
300 25.0 42.0 77.7 165.3 32.7 57.0 123.6 46.8 99.3
325 27.0 45.5 84.1 179.1 35.7 61.7 133.9 50.7 107.6
350 29.1 49.0 90.6 192.8 38.1 66.5 144.2 54.6 115.8
375 31.2 52.5 97.1 206.6 40.9 71.2 154.5 58.5 124.1
400 33.3 56.0 103.6 220.4 43.6 76.0 164.8 62.4 132.4
425 35.4 59.5 110.1 239.2 46.3 80.7 175.1 66.3 140.7
450 37.5 63.0 116.5 247.9 49.0 85.5 185.4 70.2 148.9
475 39.6 66.5 123.0 261.7 51.8 90.2 195.7 74.1 157.2
500 41.6 70.0 125.9 275.6 54.5 95.0 206.0 78.0 165.5
For system volumes
other than those given
above, multiply the 0.0833 0.140 0.259 0.551 0.109 0.190 0.412 0.156 0.331
system volume by
the factor across
16

4.9
DOMESTIC WATER
4.9.1 The domestic hot water must be in accor-
dance with the relevant recommendations
of BS 5546. Copper tubing to BS 2871.1 is
recommended for water carrying pipework
and MUST be used for pipework carrying
potable water..
4.10 ELECTRICAL SUPPLY
Warning: this appliance must be earthed
4.10.1 External wiring to the appliance must be
carried out by a competent person and be in
accordance with the current I.E.E. Regula-
tions and local regulations which apply.
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 elec-
tricity supply must be readily accessible and
adjacent to the appliance except, where the
appliance is installed in a bathroom, this
MUST be sited outside the bathroom.
SECTION 5 INSTALLATION
5.1 WARNING
5.1.1
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.
Flue box containing (Fig. 12):
Standard Flue Assembly
57 - Flue bend assembly
59 - Rubber seal 0 60
60 - Air intake duct
61 - Flue exhaust duct
62 - Terminal
65 - Pipe centering spring
66 - Flue sample point
5.2 DELIVERY
5.2.1
The appliance will arrive on site in three
cartons:
Boiler carton containing:
a) boiler fully assembled
b) installation instructions and
user instructions
c) white paper template
d) terminal cover plate (Fig. 12 item 127)
g) - 4 coach bolts and wall plugs
- screws and dowels
h) header gasket (Fig. 12 item 56)
Valve pack carton containing:
a) 2-22 mm compression ball valves
(heating)
b) 1-1 5 mm compression ball valve
(with drain screw for domestic cold
water inlet)
c) 1-1/2" BSP Union gas cock
d) Polythene bag containing
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. 10
For vertical flue
system see sect. 5.7.12
(Minimum vertical 1100 mm)
Fig. 12

5.2.2 OPTIONAL EXTRAS:
a) Straight header (Fig. 10) item 3.
b) 1000 mm flue extension.
c) Concentric 90” in-line bend (Fig. 10)
item 2.
d)
Concentric vertical flue (Fig. 10) item 1.
e) Concentric 45” in-line bend (Fig. 10)
item 10.
FLUE EXTENSION BOX CONTAINING (Fig. 14):
1000 mm flue extension duct as an extra cost only
when requested for side and vertical flue applications
59 - Rubber seal 0 60
63 Air intake duct extension
64 - Flue exhaust duct extension
65 - Pipe centering spring
STRAIGHT HEADER BOX CONTAINING (Fig. 13):
55 - Rubber seal 0 100
57 - Straight header supplied as an extra cost Only
when requested
59 Rubber seal 0 60
66 - Flue gas sample point
5.3 UNPACKING
Fig. 15
1) Open the top
of the carton
Fig. 13
Fig. 14
Fig. 17
3) Turn the carton over,
with the boiler inside
and then pull the carton
Fig. 18
2) Rest the carton on
the floor (keeping the flaps open)
4) Rest the boiler on the floor and remove
the polystyrene guards
18

5.4 POSITIONING OF THE BOILER
5.4.1 - Remove the 2 screws that secure the
upper part of the front panel of the cas-
ing (Fig. 19).
- Carefully slide the front panel a few mil-
limetres up towards the top of the appli-
ance until it is free from its slot, and
then lift off Fig. 20).
5.4.2
Unscrew the 2 screws that fasten the lower
grating on the casing and remove it from
the sides of the casing (Fig. 22).
Fig. 19
Fig. 21
Fig. 22
Fig. 23
Fig. 25
TABLE 6
19

5.4.3
Push down the 2 plastic clips that fasten
the instrument panel (Fig. 23).
5.4.4
Lower the instrument panel down by rotat-
ing it on its own hinges (Fig. 25).
5.4.5
Unscrew the two screws that fasten the two
side panels.
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).
5.4.6
Make sure the casing and screws are put
to one side in a safe place.
5.5
INSTALLING THE APPLIANCE FOR
REAR FLUE OUTLET
5.5.1
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 boil-
er 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 leav-
ing them about 10 mm. out from the wall
to enable the boiler to be located on the
wall.
Fit the elbow header positioning it towards
the required direction (Fig. 30).
IMPORTANT: Make sure that the elbow’s
dia. 60 mm duct is inserted into the fan, the
rubber seal and orifice are been correctly
fitted.
Fig. 26
Fig. 26
Fig. 27
Fig. 29
20

5.5.3 If the standard duct furnished with the boil-
er is too long (the wall to go through is less
than 680 mm thick) it can be shortened as
follows:
- Remove the centering spring 65, the flue
terminal 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 + 152 mm.
Must be de-burred.
- Cut the inner flue duct (60 mm) at right
angles to a length equal to W + 264 mm.
Insert from cut end. Reassemble the two
tubes. Insert centering spring 65.
Must be de-burred.
Reassemble together inner and outer flue
duct insert centering spring.
Fig. 32
Fig. 30
Orifice plate
concentric
flue system
RSF 84E= 81
RSF 1OOE= 79
INTAKE AND EXHAUST TERMINAL COMPONENTS
Fig. 31
KEY
56 - Straight header
57 - Elbow header
58 - Header gasket
59 Rubber seal 0 60 64 - Flue exhaust duct extension
60 - STD air intake duct
61 - STD flue exhaust duct
65 - Pipe centering spring
66 - Sample point
62 -Terminal
63 -Air intake duct extension
127 -Terminal cover plate
128 - Screw
21