Biasi RIVA COMPACT HE MK2 M96A.24SR/C User manual

Wall hung, fan flue, room sealed, high efficiency gas boiler
User manual and
Installation instructions
RIVA COMPACT HE MK2
Models
M96A.24SR/C System boiler
M96A.28SR/C System boiler
Unit 3A, Thornton Road Ind. Estate Off Hockney Road Bradford, BD8 9HQ
01274 488 388
www.heatingspares247.com

Congratulations on your choice.
RIVA COMPACT HE MK2 are condensing high efficiency sealed chamber fan flue gas
boilers.
They are fully electronically controlled and have electronic ignition.
Thematerialstheyaremadeofandthecontrolsystemstheyareequippedwithgiveyousafety,
a high level of comfort and energy savings to allow you to get the greatest benefit out of
independent heating.
RIVA COMPACT HE MK2 allow a higher efficiency by reducing the flue gas temperature such
that the water vapour formed during the combustion is condensed out.
This allows a gain of useful heat that otherwise would be lost.
Remember that...
nThe manual
--- must be read thoroughly, so that you will
be able to use the boiler in a safe and sen-
sible way;
--- must be carefully kept. It may be necess-
ary for reference in the future.
nFirst lighting up must be carried out by
competent and responsible engineer.
nThe manufacturer
--- disclaim all liability for any translations of
the present manual from which incorrect in-
terpretation may occur
--- cannot be held responsible for non---ob-
servance of instructions contained in this
manual or for the consequences of any pro-
cedure not specifically described.
Using the boiler...
nBefore lighting the boiler you are ad-
vised to have a professionally qualified per-
son check that the installation of the gas
supply
--- is gas---tight;
--- is of the correct gauge for the flow to the
boiler;
--- is fitted with all the safety and control de-
vices required by the current Regulations.
nEnsure that
--- the installer has connected the pressure
relief valve outlet to a drain pipe. The manu-
facturers are not responsible for damage
caused by opening of the pressure relief
valve and consequent escape of water, if not
connected correctly to the drain.
--- the installer has connected the conden-
sate outlet to a suitable drain pipe.
nOn detecting the smell of gas
--- don’t operate any electrical switches, the
telephone or any device that may produce
sparks;
--- open the windows and doors at once to
create a draught of air which will purge the
area;
--- shut off the gas cocks;
--- get the assistance of a qualified person.
nDo not touch the appliance with parts of
thebodythatarewetordampand/orbare
feet.
nDo not block or modify the condensate
outlet and pipework
nIn case of structural work or mainten-
ance near the exhaust duct and/or fume ex-
haust devices or their attachments, turn off
the appliance. On completion of the work,
have a professionally qualified person check
their efficiency.
nRepairs (under guarantee) must be car-
ried out only by an approved engineer, using
genuine spare parts. Thus do no more than
switching off the boiler yourself (see the in-
structions).
nYour boiler allows heating up of water to
a temperature less than boiling point;
--- must be connected to a central heating
Unit 3A, Thornton Road Ind. Estate Off Hockney Road Bradford, BD8 9HQ
01274 488 388
www.heatingspares247.com

system and/or a hot water supply system,
compatible with its performance and output;
--- can be used only for those purposes for
which it has been specially designed;
--- must not be touched by children or by
those unfamiliar with its operation;
--- must not be exposed to weather condi-
tions.
nDuring the operation it is quite normal
that the boiler produces a white plume of
condensation vapour from the flue terminal.
This is due to the high efficiency of the ap-
pliance and may be particularly evident with
low outdoor temperatures.
Safe handling of
appliance
When handling or lifting always use safe tech-
niques
--- keep your back straight, bend your knees, don’t
twist
--- move your feet, avoid bending forwards and
sideways and keep the load as close to your body
as possible.
Wherepossibletransporttheboilerusingasack
truck or other suitable trolley.
Always grip the boiler firmly, and before lifting feel
where the weight is concentrated to establish the
centre of gravity, repositioning yourself as necess-
ary.
Safe handling of
substances
These products are manufactured in accordance
with ISO 9000 and do not, and will not, contain any
hazardous materials or substances such as as-
bestos, mercury or C.F.C.’s.
The appliance packaging does not contain any
substances, which may be considered a hazard to
health.
Combustion chamber panels
Material: mineral fibres
Known hazards --- Some people can suffer red-
dening and itching of the skin. Fibre entry into the
eye will cause foreign body irritation, which can
cause severe irritation to people wearing contact
lenses. Irritation to respiratory tract.
Precautions --- Dust goggles will protect eyes.
People with a history of skin complaints may be
particularly susceptible to irritation. High dust le-
vels are only likely to arise following harsh ab-
rasion. In general, normal handling and use will
not present high risk, follow good hygiene prac-
tices, wash hands before, touching eyes, consum-
ing food, drinking or using the toilet.
Firstaid --- Medicalattentionmustbesoughtfol-
lowing eye contact or prolonged reddening of the
skin.
Thermostat / Temperature gauge
Description --- Sealed phial and capillary contain-
ing liquid.
Known hazards --- irritating to skin, eyes and
throat. Vapour is harmful. Inflammable --- do not
extinguish with water.
Precautions --- Do not incinerate. Avoid contact
with broken/leaking phials. Do not purposely
puncture.
Firstaidmedicalattentionmustbesoughtfollow-
ing eyes/skin contact, wash with clean water.
Appliance category II2H3+ Gas G20 20 mbar, G30 29 mbar, G31 37 mbar
Country of destination: United Kingdom (GB) Ireland (IE)
This appliance conforms with the following EEC directive:
DGas appliance Directive 90/396/CEE
DBoiler Efficiency Directive 92/42/CEE
DElectromagnetic Compatibility Directive 89/336/CEE
DLow voltage Directive 73/23/CEE
The manufacturer, in the continuous process to improve his products, reserves the right to modify the
data expressed in the present documentation at any time and without prior notice.
The present documentation is an informative support and it cannot be considered as a contract to-
wards third parties.
Unit 3A, Thornton Road Ind. Estate Off Hockney Road Bradford, BD8 9HQ
01274 488 388
www.heatingspares247.com

Boiler installation and commissioning tips
nThe installation must be carried out by
a qualified person who will be responsible for
observing the current Regulations.
Installing the boiler...
nDonotforgettoremovethetransitcaps
and plugs from the boiler connections these
are fitted to every boiler.
nKeep the boiler clear of dust during in-
stallation and in particular do not allow any
dust or debris to enter the top of the boiler
where the flue connection is made. It is rec-
ommended that you put a dust sheet over the
top of the boiler until you are ready to make
the flue connection.
nBecause every boiler is fired and tested
live at the factory, a small amount of water re-
mains within the boiler. It is possible for this
water to initially cause the pump to seize. It is
therefore recommended that the pump rotor
be manually turned to free its rotation before
turning the boiler on.
nRemember to release the auto air purge
before filling the boiler. See the instructions to
identify the location of this device.
nDo not remove the cap of the pressure
test points of the air switch (top left side of the
boiler).
nYou are strongly advised to flush out the
system both cold and hot in order to remove
system and installation debris.
nIt is also sensible to initially fire and com-
mission the boiler before connecting any ex-
ternal controls such as a room thermostat. By
this method if you have a subsequent prob-
lem following the addition of an external con-
trol you can eliminate the boiler from your
fault analysis.
nDonotforgettorangeratetheboilerto
suit the system requirements. This pro-
cedure is covered in the commissioning sec-
tion of the installation manual.
nIf the boiler is fitted with a digital pro-
grammer, when setting the times for auto-
matic operation, remember that for every
“ON” time there must be an “OFF” time to fol-
low and that on every occasion you enter a
time you must also indicate which days that
you want the boiler to follow the timed set-
tings.
nSome products incorporate an anti cycl-
ing time delay. It is normal when first switch-
ing the boiler on for the boiler to operate on
heating for a few seconds then switch off.
After 3--- 4 minutes has elapsed the boiler will
then re ignite and operate perfectly normally.
The ignition delay cycle does not prevent
normal operation of the boiler to provide
d.h.w.
nIf you are in any doubts as to the installa-
tion or operation of the boiler please read the
instruction manuals thoroughly and then if
necessary contact Biasi UK for advice and
assistance.
Please remember that if you are in any doubt about the installation of this product you can contact our
Technical Helpline on tel. [phone]
Unit 3A, Thornton Road Ind. Estate Off Hockney Road Bradford, BD8 9HQ
01274 488 388
www.heatingspares247.com

TABLE OF CONTENTS
1
1 Appliance description 2..........
1.1 Overview 2......................
1.2 Control panel 2..................
1.3 Isolation valves 2.................
1.4 Technical data 2.................
1.5 Operation lights 3................
2 Instructions for use 4............
2.1 Warnings 4......................
2.2 Refilling procedure 4..............
2.3 Ignition 5........................
2.4 C.h. circuit temperature 5..........
2.5 Extinguishing 5..................
3Usefuladvice 7.................
3.1 Central heating 7.................
3.2 Frost protection 7................
3.3 Condensate drain 7..............
3.4 Periodic maintenance 7...........
3.5 External cleaning 7...............
3.6 Operational faults 7...............
4 Technical information 9..........
4.1 Overview 9......................
4.2 Main diagram 10..................
4.3 Hydraulic specifications 11.........
4.4 Expansion vessel 11...............
4.5 Technical data mod. M96A.24SR/... 12
4.6 Technical data mod. M96A.28SR/... 14
5 General requirements 16..........
5.1 Related documents 16.............
5.2 Location of appliance 16...........
5.3 Flue system 16....................
5.4 Gas supply 17....................
5.5 Air supply 17.....................
5.6 Ventilation 17.....................
5.7 Condensate drain 17..............
5.8 Water circulation (c.h.) 18...........
5.9 Water treatment 19................
5.10 Electrical supply 19................
6 Installation 20....................
6.1 Warnings 20......................
6.2 Precautions for installation 20.......
6.3 Installing the bracket 20............
6.4 Overall dimensions 21.............
6.5 Joints 21.........................
6.6 Mounting the boiler 21.............
6.7 Fitting the flue system 22...........
6.8 Choice of flue 22..................
6.9 Electrical connections 25...........
6.10 External frost protection 26.........
6.11 Connecting a system boiler
to a cylinder 27...................
7 Commissioning 30...............
7.1 Electrical installation 30............
7.2 Gas supply installation 30..........
7.3 Initial filling of the system 30........
7.4 Condensatepipeandtraps 31......
7.5 Lighting the boiler 31..............
7.6 Checking the gas pressure
at the burner 31...................
7.7 Checking the burner ignition 32.....
7.8 Checking the ignition device 33.....
7.9 Checking the flue system 33........
7.10 Checking the condensate drain pipe 33
7.11 Instructing the user 33.............
8 Gas conversion 34...............
8.1 Warnings 34......................
8.2 Procedures 34....................
9 Maintenance 36..................
9.1 Warnings 36......................
9.2 Dismantling the external panels 36...
9.3 Emptying the c.h. system 36........
9.4 Combustion analysis check 37......
9.5 Cleaning the primary heat exchanger 37
9.6 Checking the pressurisation
in the expansion vessel 37..........
9.7 Cleaning the burner 37.............
9.8 Checking the flue 37...............
9.9 Drain pipe inspection 37............
9.10 Visual inspection of appliance 37....
9.11 Gas pressures and tightness 37.....
Abbreviations used in the manual:
C.h. = Central heating
D.h.w. = Domestic hot water
D.c.w. = Domestic cold water
USE
INSTALLATIONMAINTENANCE
Unit 3A, Thornton Road Ind. Estate Off Hockney Road Bradford, BD8 9HQ
01274 488 388
www.heatingspares247.com

1APPLIANCE DESCRIPTION
2
1.1 Overview
2
1
3
Fig. 1.1
1 Case front panel
2 Control panel
3 Control panel cover
1.2 Control panel
4 C.h. circuit temperature and pressure gauge
5 Lock--- out signal lamp
6 Lockout reset button
7 Function selector and c.h. temp. control knob
8Serviceknob
9 Appliance operation lights
The service knob 8 is useless for the normal oper-
ation of the boiler.
It must be used only by a qualified person during
commissioning and servicing.
1.3 Isolation valves
12
11
13
10
Fig. 1.2 (bottom view of the boiler)
10 Condensate drain pipe
11 C.h. return valve
12 Gas inlet valve
13 C.h. flow valve
1.4 Technical data
For detailed technical data see section 4.5 or 4.6
of this manual.
78 6 54 9
Fig. 1.3
USE
Unit 3A, Thornton Road Ind. Estate Off Hockney Road Bradford, BD8 9HQ
01274 488 388
www.heatingspares247.com

Appliance description
3
1.5 Operation lights
Three lights (9 in Fig. 1.3) give detailed indication
regarding the operation of the boiler.
The following table gives the relationship between
each of the possible light combinations and their
meaning.
A short pulse every 4
seconds:
stand--- by condition
Function selector in
position.
Anti--- freeze system active
1 second pulse every 2
seconds: normally
operating boiler. Function
selector in position
C.h. operation
Frost protect operation
Faulty c.h. temperature
probe NTC
Faulty flue temperature
probe NTC
Faulty primary circuit
(no water or low c.h.
pressure)
Faulty primary circuit
(absence of flow)
Faulty air pressure sensor
Lack of burner ignition (no
ignition signal from the full
seqence ignition device)
Safety thermostat lock out
Flue temperature probe
NTC lock out
Flame detection error
Other faults
Lack of power supply or
fauly electr. control p.c.b.
Meaning of symbols
L
amp OFF
L
amp ON
Flashing lamp, alone or simultaneously
with an other lamp.
Flashing lamp, alternate with another
lamp.
If the lights combination observed is not included
in the above table a fault may be indicated.
Reference should be made to the following table.
In this case switch off the boiler, as described in
section 2.5 on page 5 and call a competent and re-
sponsible Service Engineer.
USE
Unit 3A, Thornton Road Ind. Estate Off Hockney Road Bradford, BD8 9HQ
01274 488 388
www.heatingspares247.com

2INSTRUCTIONS FOR USE
4
2.1 Warnings
Our Company supports the Benchmark in-
itiative. The Benchmark Log Book is lo-
cated at the back of this manual and should
be completed by the Installing/Commiss-
sioning Engineer and handed over to the
User for future reference by other visiting
Engineers. Also included is the Service In-
terval Record card that should be com-
pleted by the Service Engineer following
the annual service maintenance of the
boiler and system.
All CORGI Registered Installers carry a
CORGI ID card, and have a registration
number. Both should be recorded in your
Benchmark Log Book. You can check your
installer is registered by calling CORGI di-
rect on 01256 372300.
In order to guarantee safety and correct oper-
ation, it is essential that all the tests are carried
out by a competent and responsible service
engineer before lighting up the boiler.
The tests are described in the installation in-
structions in section 7 commissioning.
Ensure that the c.h. circuit is regularly filled
with water (even if the boiler is only used for
d.h.w. supply) checking that the pressure indi-
cated on the temperature and pressure gauge
4 is not lower than that shown in Fig. 2.2.
If the pressure reading on the pressure gauge
is below that shown in Fig. 2.2, then the system
will require topping up. A filling loop is normally
provided by the installer for this purpose.
If you are in any doubt regarding this pro-
cedure you are advised to contact your In-
staller or an Approved Engineer.
This appliance is provided with a built in anti---
freeze system that operates the boiler when
the temperature is below 5 ˚C
Therefore, when the boiler is not lit or used in
cold weather, with consequent risk of freezing
do not switch off the boiler at the fused spur
isolation switch or close the gas inlet cock.
When you do not expect to use the boiler for a
long period and the boiler is not to be used for
frost protection then follow the instructions
giveninsection2.5onpage5.
2.2 Refilling procedure
1 Isolate the boiler from the electrical supply at
the fused spur. Reconnect the filling loop as
demonstrated in Fig. 2.1.
Te m p o r a r y
connection
Control valve
Control valve
Double check valve
Supply pipe
(cold water inlet)
C.h. return pipe
Fig. 2.1
2 Open the valves of the filling loop and watch
the gauge until it reaches normal filling pres-
sure as shown in Fig. 2.2.
4
Normal filling
pressure
Fig. 2.2
3 Close the valves and remove the filling loop.
If you experience any difficulty with the oper-
ation of the boiler, switch off the boiler immedi-
ately at the fused spur isolation switch and
contactyourInstalleroranapprovedService
Engineer
Air introduced into the boiler during this filling pro-
cess will vent through the automatic air purger
fitted to the boiler. You may also find it necessary
to vent air from your radiator circuit using your
radiator key, however be aware that excessive
venting will cause the pressure in the system to
drop.
Always ensure that the pressure gauge is set at the
required pressure.
USE
Unit 3A, Thornton Road Ind. Estate Off Hockney Road Bradford, BD8 9HQ
01274 488 388
www.heatingspares247.com

Instructions for use
5
2.3 Ignition
1 Check that the valves located in the lower part
of the boiler are open (Fig. 2.3).
Open position
Fig. 2.3
2 Turn on the electricity supply to the boiler,
switching on the fused spur isolation switch.
The appliance operation light 9 (Fig. 2.4) will
flash every 4 seconds (stand---by condition).
3 To operate the boiler, position the function se-
lector 7 as in Fig. 2.4.
The appliance operation light 9 will flash every
2 seconds (operating boiler).
79
Fig. 2.4
2.4 C.h. circuit temperature
The output temperature of c.h. water is adjustable
from a minimum of about 40°C to a maximum of
about 85°C (Fig. 2.5), by turning the function se-
lector (7).
Adjustment of c.h. output on the boiler is auto-
matic. The greatest output pre---set in the factory
can, however, be reduced in level according to
actual system requirements; this does not affect
the maximum output in d.h.w. operation.
Such adjustments must be carried out by a quali-
fied person; therefore we advise you to contact
yourinstallerorServiceAgent.
Adjustment of the boiler temperature alters the
gas flow at the burner according to the thermal de-
mand in the system. So it is usual to see the burner
lit at the minimum level for more or less long
periods.
Minimum
Maximum
Fig. 2.5
Adjustment
In order to achieve optimal settings for economy
and comfort, we recommend adjusting the oper-
ating temperature of the c.h. water according to
the outside temperature, positioning the knob as
follows:
Lower than
--- 5 ˚C
From 5 to 15 ˚C
Between
--- 5 a n d + 5 ˚C
Fig. 2.6
Your qualified installer will be able to recommend
the most suitable adjustment for your system.
The temperature and pressure gauge (4, Fig. 1.3
on page 2) will allow you to check that the set tem-
perature is obtained.
2.5 Extinguishing
To turn the boiler off set the function selector 7 to
the position shown in Fig. 2.7.
USE
Unit 3A, Thornton Road Ind. Estate Off Hockney Road Bradford, BD8 9HQ
01274 488 388
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Instructions for use
6
The appliance operation light 9 will flash every 4
seconds.
79
Fig. 2.7
When you do not expect to use the boiler for a long
period:
1 Switch off the electricity supply to the boiler, by
means of the fused spur isolation switch;
2 Shut off the gas supply cock 12 and the valves
for the water circuits fitted under the boiler
(Fig. 2.8).
3 Empty the water circuits, if necessary, as
showninsectionGeneral access and emptying
hydraulic circuits in the service manual.
Closed position
12
Fig. 2.8
USE
Unit 3A, Thornton Road Ind. Estate Off Hockney Road Bradford, BD8 9HQ
01274 488 388
www.heatingspares247.com

3USEFUL ADVICE
7
3.1 Central heating
For reasonably economical service install a room
thermostat.
Never shut off the radiator in the area where the
room thermostat is installed.
If a radiator (or a convector) does not heat up,
check that no air is present in it and that its valve
is open.
If the ambient temperature is too high, do not alter
the radiator valves. Reduce the central heating
temperature instead by means of the room ther-
mostat and the function selector (7 in Fig. 3.1).
7
Fig. 3.1
3.2 Frost protection
This appliance is provided with a built in anti---
freeze system that operates the boiler when the
temperature is below 5 ˚C
Therefore, when the boiler is not lit and used in
cold weather, with consequent risk of freezing do
not switch off the boiler at the fused spur isola-
tion switch or close the gas inlet cock.
3.3 Condensate drain
Thecondensatedrainmustnotbemodifiedor
blocked.
Blockage of the condensate drain, caused by de-
bris or freezing, can cause automatic shutdown of
the boiler.
If freezing is suspected and the pipe run isaccess-
ible an attempt may be made to free the obstruc-
tion by pouring hot water over the exposed pipe
an cleaning any blockage from the end of the
pipe. If this fails to remedy the problem the assist-
ance of a CORGI registered installer or in IE a com-
petent person should be sought.
3.4 Periodic maintenance
For efficient and continuous operation of the
boiler, it is advisable to arrange maintenance and
cleaning by an Authorised Service Centre En-
gineer, at least once a year.
During the service, the most important compo-
nents of the boiler will be inspected and cleaned.
This service can be part of a maintenance con-
tract.
In particular, you are advised to have the following
checks carried out:
--- primary heat exchanger;
--- burner;
--- exhaust fume duct and flue;
--- pressurisation of the expansion tank;
--- filling up of the central heating circuit;
--- bleeding of air from the central heating system;
--- general check of the appliance’s operation.
3.5 External cleaning
Before carrying out any cleaning, disconnect the
appliance from the electrical mains, using the
fused spur isolation switch fitted adjacent to the
appliance.
To clean the external panels, use a cloth soaked in
soapy water. Do not use solvents, abrasive powd-
ers or sponges.
Do not carry out cleaning of the appliance and/or
its parts with readily flammable substances (for
example petrol, alcohols, naphtha, etc.).
3.6 Operational faults
If the lock---out signal lamp comes on
this indicates that the safety lock --- out 5 (Fig. 3.2)
has stopped the boiler
To re--- start the boiler, it is necessary to press the
boiler reset button 6 (Fig. 3.2).
6
5
Fig. 3.2
For the first lighting up and following maintenance
procedures for the gas supply, it may be necess-
ary to repeat the resetting operation several times
so as to remove the air present in the pipework.
USE
Unit 3A, Thornton Road Ind. Estate Off Hockney Road Bradford, BD8 9HQ
01274 488 388
www.heatingspares247.com

Useful advice
8
After five consecutive resetting attempts the reset
button is inhibited. To restore its function it is
necessary to switch the boiler off and on from the
electrical mains, using the fused spur isolation
switch fitted adjacent to the appliance.
Safety lock--- out may occour even in case of an
blockage of the condensate drainage (e.g.
plugged drain pipe).
It is advisable to check the condensate drainage
pipe and traps for cleaness.
In case of persistent lock--- out call a competent
and responsible service engineer.
If noises due to air bubbles are heard during
operation...
you should check that the pressure on the tem-
perature and pressure gauge (Fig. 2.2 on page 4)
is not below the correct setting.
If required, top up the system correctly, as de-
scribed in the section 2.2 of this manual.
Bleed any air present in the radiators, if necessary.
If the pressure on the temperature and pres-
suregauge(4onpage2)hasgonedown...
it is necessary to top up the appliance with water
again, so as to raise the pressure to an adequate
level as described in the section 2.2 of this manual.
If topping up with water has to be done very fre-
quently, have the system checked for leaks.
If water comes out of the pressure relief valve
Check on the temperature and pressure gauge (4
on page 2) that the pressure in the central heating
circuit is not close to 3 bars. In this case, tempera-
ture rise in the circuit can cause the pressure relief
valve to open.
So that this does not happen and to decrease the
pressure to a normal value, it is advisable to vent
some of the water in the appliance through the
bleed valves present in the radiators.
If water should occasionally leak from the
boiler...
shut off the valves positioned under the boiler
(Fig. 2.8 on page 6) and call an Authorised Service
Centre Engineer.
If the left appliance operation light 9 (Fig. 3.3)
flashes very quickly the boiler is detecting a
fault.
9
Fig. 3.3
In this case or in case of problems other than
those mentioned here, switch off the boiler, as
describedinsection2.5onpage5andcalla
competent and responsible service engineer.
USE
Unit 3A, Thornton Road Ind. Estate Off Hockney Road Bradford, BD8 9HQ
01274 488 388
www.heatingspares247.com

4TECHNICAL INFORMATION
9
4.1 Overview
21
36
35
34
33
31
32
23
1814
25
16
15
2427
17 19
20
22
26
Fig. 4.1
10 Condensate drain pipe
11 C.h. return valve
12 Gas inlet valve
13 C.h. flow valve
14 Fan
15 Air pressure sensor test points
16 Air pressure sensor
17 Flue temperature probe NTC
18 Condensing heat exchanger
19 Safety thermostat
20 C.h. temperature probe NTC
21 Main circuit drain valve
22 Condensate trap
23 Automatic air purger valve
24 Pump vent plug
25 Pump
26 C.h. pressure relief valve
27 Modulation gas valve
28 Modulation operator
29 Gas valve outlet pressure test point
30 Gas valve inlet pressure test point
31 Primary circuit pressure switch
32 Flame---detecting electrode
33 Burner
34 Ignition electrodes
35 Combustion chamber
36 Primary heat exchanger
37 C.h. expansion tank
3 8 B y --- p a s s v a l v e
39 Fan pressure connection
40 Flue outlet pipe
41 Air intake pipe
INSTALLATION
Unit 3A, Thornton Road Ind. Estate Off Hockney Road Bradford, BD8 9HQ
01274 488 388
www.heatingspares247.com

Technical information
10
4.2 Main diagram
39
16
41
40
31
36
34
29
25
26
27
30
23
38
11 1312
37
14
32
20
28
19
33
21
18
22
10
17
Fig. 4.2
INSTALLATION
Unit 3A, Thornton Road Ind. Estate Off Hockney Road Bradford, BD8 9HQ
01274 488 388
www.heatingspares247.com

Technical information
11
4.3 Hydraulic specifications
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0 200 400 600 800 1000 1200 1400
0
10
20
30
40
kPa bar
l/h
60
50
Fig. 4.3
The hydraulic specifications in Fig. 4.3 represent
the pressure (available head for the central heat-
ing system) as a function of the flow rate.
The load loss due to the boiler has already been
subtracted.
Output with thermostat cocks shut off
The boiler is fitted with an automatic by --- pass
valve (38 on page 9), which protects the primary
heat exchanger.
In case of excessive reduction or total blockage of
water circulation in the central heating system
owing to closure of the thermostatic valves or sys-
tem component cocks, the by---pass valve ensur-
es a minimum flow of water through the primary
heat exchanger.
4.4 Expansion vessel
Note: this boiler is designed for operation only
in a sealed central heating system
The height difference between the pressure relief
valve and the highest point in the system may be
10m at most.
For greater differences, increase the pre--- load
pressure in the expansion vessel (37 on page 9)
and the system, when cold, by 0.1 bar for each
additional 1m.
Capacity l6,0
P r e --- l o a d p r e s s u r e kPa
bar
100
1,0
Maximum volume of water
in the system *
l94
Ta b . 4 . 1
* Where conditions are:
--- Average maximum temperature of the system
is 85°C
--- Initial temperature when filling up the system is
10°C
For systems with volumes greater than 94 l, an
additional expansion vessel must be provided.
INSTALLATION
Unit 3A, Thornton Road Ind. Estate Off Hockney Road Bradford, BD8 9HQ
01274 488 388
www.heatingspares247.com

Technical information
12
4.5 Technical data
mod. M96A.24SR/...
Heat input (A)
Nominal kW
BTU/h
25,0
85 295
Minimum kW
BTU/h
11,0
37 530
Useful output
Maximum kW
BTU/h
24,3
82 908
Minimum kW
BTU/h
10,5
35 825
Maximum condensing kW
BTU/h
26,0
88 708
Minimum condensing kW
BTU/h
11,2
38 213
Central heating
Maximum flow temp. ˚C85
Minimum flow temp. ˚C40
Minimum return temp. ˚C40
Maximum pressure kPa
bar
250
2,5
Minimum pressure kPa
bar
30
0,3
Available head
(in 1000 l/h)
kPa
bar
25
0,25
Seasonal efficiency
G20 (B) band
%
B
87,6
Seasonal efficiency
G30 G31 (B) band
%
B
88,5
Gas supply pressures
Gas Natural
G20
Butane
G30
Propane
G31
Norm. Pa
mbar
2 000
20
2 900
29
3 700
37
Max Pa
mbar
2 500
25
3 500
35
4 500
45
Min. Pa
mbar
1 700
17
2 000
20
2 500
25
1 mbar approximately equals 10 mm H2O
Gas pressures at the burner
Gas Natural
G20
Butane
G30
Propane
G31
Max. Pa
mbar
1130
11,3
2810
28,1
3610
36,1
Min. Pa
mbar
250
2,5
580
5,8
780
7,8
Ignition Pa
mbar
850
8,5
2110
21,1
2700
27,0
1 mbar approximately equals 10 mm H2O
Gas rate
Gas Natural
G20
m3/h
Butane
G30
kg/h
Propane
G31
kg/h
Max. 2,65 1,97 1,94
Min. 1,16 0,87 0,85
(A) referred to the net calorific value at 15 ˚C and 1013,25 mbar
G 20 = 34,02 MJ/m3, G 30 = 45,6 MJ/kg, G 31 = 46,4 MJ/kg
(B)The value is used in the UK Government’s Standard Assessment Procedure (SAP) for energy rating
of dwellings. The test data from which it has been calculated have been certified by a notified body.
(C) Values subject to tolerance
INSTALLATION
Unit 3A, Thornton Road Ind. Estate Off Hockney Road Bradford, BD8 9HQ
01274 488 388
www.heatingspares247.com

Technical information
13
Injectors mm/100ø
Natural G20 130
Butane G30 77
Propane G31 77
Electrical Data
Voltage V~ 230
Frequency Hz 50
Power consumption W140
Protection degree IPX4D
External fuse rating A 3
Internal fuse rating AF1--- F2 3,15 AF
Flue design
Type C12 C32 C42 C52 C82
Flue pipe diameter
Coaxial mm 60/100
Twin split pipes mm 80
Roof mm 80/125
Nominal heat flow rate
(A)(D) kW 25,0
Exhaust temperature (D) ˚C71
Mass flow rate (D) g/s 16,0
Flue gas figures
Nominal heat input (A)(D) kW 25,0
CO2content %6,5
O2content %9,3
CO content ppm 75
Exhaust temperature (D) ˚C71
NOxclass 2
Weighted NOxppm 99
Other specifications
Height mm 803
Width mm 400
Depth mm 350
Weight (dry) kg 41,0
Water volume in the boiler
(up to 1 bar)
l(kg) 4,0
(D) Values refer to tests with a 1 m chimney working at the nominal heat input
INSTALLATION
Unit 3A, Thornton Road Ind. Estate Off Hockney Road Bradford, BD8 9HQ
01274 488 388
www.heatingspares247.com

Technical information
14
4.6 Technical data mod.
M96A.28SR/...
Heat input (A)
Nominal kW
BTU/h
29,0
98 942
Minimum kW
BTU/h
13,0
44 353
Useful output
Maximum kW
BTU/h
28,4
96 897
Minimum kW
BTU/h
12,5
42 648
Maximum condensing kW
BTU/h
30,4
103 721
Minimum condensing kW
BTU/h
13,3
45 378
Central heating
Maximum flow temp. ˚C85
Minimum flow temp. ˚C40
Minimum return temp. ˚C40
Maximum pressure kPa
bar
250
2,5
Minimum pressure kPa
bar
30
0,3
Available head
(in 1000 l/h)
kPa
bar
25
0,25
Seasonal efficiency
G20 (B) band
%
B
88,5
Seasonal efficiency
G30 G31 (B) band
%
B
89,5
Gas supply pressures
Gas Natural
G20
Butane
G30
Propane
G31
Norm. Pa
mbar
2 000
20
2 900
29
3 700
37
Max Pa
mbar
2 500
25
3 500
35
4 500
45
Min. Pa
mbar
1 700
17
2 000
20
2 500
25
1 mbar approximately equals 10 mm H2O
Gas pressures at the burner
Gas Natural
G20
Butane
G30
Propane
G31
Max. Pa
mbar
1130
11,3
2810
28,1
3600
36,0
Min. Pa
mbar
240
2,4
580
5,8
780
7,8
Ignition Pa
mbar
850
8,5
2110
21,1
2700
27,0
1 mbar approximately equals 10 mm H2O
Gas rate
Gas Natural
G20
m3/h
Butane
G30
kg/h
Propane
G31
kg/h
Max. 3,07 2,29 2,25
Min. 1,38 1,03 1,01
(A) referred to the net calorific value at 15 ˚C and 1013,25 mbar
G 20 = 34,02 MJ/m3, G 30 = 45,6 MJ/kg, G 31 = 46,4 MJ/kg
(B)The value is used in the UK Government’s Standard Assessment Procedure (SAP) for energy rating
of dwellings. The test data from which it has been calculated have been certified by a notified body.
(C) Values subject to tolerance
INSTALLATION
Unit 3A, Thornton Road Ind. Estate Off Hockney Road Bradford, BD8 9HQ
01274 488 388
www.heatingspares247.com

Technical information
15
Injectors mm/100ø
Natural G20 130
Butane G30 77
Propane G31 77
Electrical Data
Voltage V~ 230
Frequency Hz 50
Power consumption W150
Protection degree IPX4D
External fuse rating A 3
Internal fuse rating AF1--- F2 3,15 AF
Flue design
Type C12 C32 C42 C52 C82
Flue pipe diameter
Coaxial mm 60/100
Twin split pipes mm 80
Roof mm 80/125
Nominal heat flow rate
(A)(D) kW 29,0
Exhaust temperature (D) ˚C69
Mass flow rate (D) g/s 17,8
Flue gas figures
Nominal heat input (A)(D) kW 29,0
CO2content %6,8
O2content %8,8
CO content ppm 52
Exhaust temperature (D) ˚C69
NOxclass 2
Weighted NOxppm 92
Other specifications
Height mm 803
Width mm 400
Depth mm 350
Weight (dry) kg 42,5
Water volume in the boiler
(up to 1 bar)
l(kg) 4,1
(D) Values refer to tests with a 1 m chimney working at the nominal heat input
INSTALLATION
Unit 3A, Thornton Road Ind. Estate Off Hockney Road Bradford, BD8 9HQ
01274 488 388
www.heatingspares247.com

5GENERAL REQUIREMENTS
r
e
v
1
7
0
9
9
3
16
Our Company supports the Benchmark initiat-
ive. The Benchmark Log Book is located at the
back of this manual and should be completed
by the Installing/Commisssioning Engineer
and handed over to the User for future refer-
ence by other visiting Engineers. Also in-
cluded is the Service Interval Record card that
should be completed by the Service Engineer
following the annual service maintenance of
the boiler and system.
For Ireland (IE), it is necessary to complete a
“Declaration of Conformity” to indicate com-
pliance to I.S.813.2002.
This appliance must be installed by a compet-
ent person in accordance with the Gas Safety
(installation & Use) Regulations.
5.1 Related documents
The installation of this appliance must be in ac-
cordance with the relevant requirements of the
current Gas Safety (Installation & Use) Regula-
tions, the Local Building Regulations, the current
I.E.E. Wiring Regulations, the Regulations and
by---laws of the local water undertaking, and in
Scotland, in accordance with the Building Stan-
dards (Scotland) Regulation. Health and safety
document n˚635 ”Electricity at work regs.”.
It should also be in accordance with the British
Standard Codes of Practice:
In Ireland (IE). The installation must be carried out
by a Competent Person and installed in accord-
ance with the current edition of I.S.813.2002 “Do-
mestic Gas Installations” the current Building
Regulations and reference should be made to the
current ETCI rules for electrical installations.
5.2 Location of appliance
The appliance may be installed in any room or in-
ternal space, although particular attention is
drawn to the requirements of the current I.E.E. Wir-
ing Regulations, and in Scotland, the electrical
provisions of the Building Regulations applicable
in Scotland, with respect to the installation of the
combined appliance in a room containing a bath
or shower.
For Ireland (IE), reference should be made to the
current edition of I.S.813.2002 and the current
ETCI rules for electrical installations.
Where a room---sealed appliance is installed in
a room containing a bath or shower, any electri-
cal switch or appliance control, utilising mains
electricity should be so situated that it cannot
be touched by a person using the bath or
shower.
The location must permit the provision of an ad-
equate flue and termination.
For unusual locations special procedures may be
necessary and BS 6798 gives detailed guidance
on this aspect.
A compartment used to enclose the appliance
must be designed specifically for this purpose.
This appliance is not suitable for external installa-
tion.
5.3 Flue system
The provision for satisfactory flue termination must
be made as described in BS 5440 part 1.
For Ireland (IE), refer to I.S.813.2002.
The appliance must be installed so that the flue ter-
minal is exposed to external air.
It must not be installed so that the terminal dis-
charges into an other room or space as an out-
house or lean --- to. It is important that the position
of the terminal allows a free passage of air across
at all times.
The terminal should be located with due regard for
the damage or discoloration that might occur to
building products in the vicinity.
In cold and/or humid weather water vapour may
condense on leaving the flue terminal; the effect of
such ”steaming” must be considered.
Pluming may easily occur at the terminal. Where
possible, terminal position which could cause a
nuisance should be avoided.
INSTALLATION
Unit 3A, Thornton Road Ind. Estate Off Hockney Road Bradford, BD8 9HQ
01274 488 388
www.heatingspares247.com