Morco GB24 Operating instructions

12/2023
UIN 236461 A02
User & Installation Instructions
GB24 & GB30
IV
Propane
88
restart
Morco House, Riverview Road, Beverley, East Yorkshire, HU17 0LD
Morco Products Ltd
Tel: [phone] Email: [email protected]
k
Website: www.morcoproducts.co.uk
To Domestic Hot Water:
GB24-Propane Minimum 8.0 kW
GB30-Propane Minimum 8.0 kW
GB24-Propane Maximum 24.2 kW
GB30-Propane Maximum 30.3 kW
To Central Heating:
GB24-Propane Minimum 8.0 kW
GB30-Propane Minimum 8.0 kW
GB24-Propane Maximum 24.2 kW
GB30-Propane Maximum 24.2 kW
BOILER OUTPUT
min max min max
mode
off
e
restart
IV

2
MODEL
SYMBOL UNITS 24 30
Condensing Boiler n/a n/a yes yes
Low Temperature Boiler n/a n/a no no
B1 Boiler n/a n/a no no
Cogeneration Space Heater n/a n/a no no
Equipped with a Supplementary Heater n/a n/a no no
Combination Heater n/a n/a yes yes
Nominal Heat Output for Space Heating
Full Load P4kW 24.3 24.3
Part Load P1kW 8 8
Auxiliary Electricity Consumption
Full Load elmax kW 0.029 0.03
Part Load elmin kW 0.022 0.014
Standby PSB kW 0.003 0.003
Seasonal Space Heating Energy Efciency
Full Load ƞ4% 90 90
Part Load ƞ1% 98.7 98.7
Standby Loss Pstby kW 0.05 0.05
Ignition Pign kW 0 0
Emissions Gross NOxmg/kWh 50 51
Annual Energy Consumption QHE GJ 75 75
Sound Power Level, Indoors LWA dB 46 46
Domestic Hot Water
Domestic Hot Water Qelec kWh 0.166 0.017
Water heating energy efciency (Eco)
Tapping Prole L
ƞWH %82 80
Daily fuel consumption 24hr (GCV) Actual
measured
Qfuel kWh 14.53 14.85
Annual electricity consumption AEC kWh 36 36
Annual fuel consumption AFC GJ 11 11
ERP DATA
 
All Gas Safe Register installers carry a Gas Safe Register ID card, and have a registration number. You can check your installer by calling Gas Safe
Register direct on 0800 4085500.

3
MORCO IV COMBINATION BOILER
Morco Products Ltd
ERP DATA
SYMBOL UNITS MODEL
24 30
Condensing boiler Yes
Seasonal Space heating efciency class A
Rated heat output kW 24
Seasonal space heating energy efciency ƞs% 94*
Annual energy consumption QHE GJ 75
Sound power level, indoors LWA dB 46 46
Water heating energy efciency class A
Seasonal Space Heating Energy Efciency of the Boiler *%
Temperature control (from che of temperature control) %
Class I Class II Class III Class IV Class V Class VI Class VII Class VIII
1% 2% 1.5% 2% 3% 4% 3.5% 5%
PRODUCT FICHE
 
The energy efciency of the package of products provided for in this document may not correspond to its actual energy efciency once installed in a
building, as the efciency is inuenced by further factors such as heat loss in the products in relation to the building size and its characteristics
Collector Size
(in m2)
Tank Volume
(in m3)
Collector
Efciency
(in %)
Tank rating
A* = 0.95
A = 0.91
B = 0.86
C = 0.83
D-G = 0.81
Solar Contribution (from che of solar device)
Seasonal Space Heating Energy Efciency of Package TOTAL: A+B+C=
Seasonal Space Heating Energy Efciency Class of Package
= (‘III ’x + ‘IV ’ x ) x 0.9 x ( / 100 x = %
%
GG F E D C B A A+ A++ A+++
< 30% ≥ 30% ≥ 34% ≥ 36% ≥ 75% ≥ 82% ≥ 90% ≥ 98% ≥ 125% ≥ 150%
A
B
C

4

5
Combination Boiler
Morco GB24 & GB30 IV
CONTENTS
1 Users Instructions................................................................................................................................................................ 6
2 Specications .................................................................................................................................................................... 10
3 Technical Data................................................................................................................................................................... 12
4 General Installation Requirements .................................................................................................................................... 14
5 Installation Instructions ..................................................................................................................................................... 16
6 Commissioning Instructions............................................................................................................................................... 25
7 Servicing Schedule............................................................................................................................................................ 27
8 Fault Codes ....................................................................................................................................................................... 33
9 Combustion Checks .......................................................................................................................................................... 39
10 Warranty Conditions .......................................................................................................................................................... 41
Destination Country:
CAT II2H3P (20/37 mbar)
CH = Switzerland
CZ = Czech Republic
ES = Spain
FR = France
GB= UK
GR= Greece
IE = Ireland
IT = Italy
PT = Portugal
SI = Slovenia
CAT I3P (30 mbar)
DE = Germany
NL = Netherlands
CAT I3P (37 mbar)
BE = Belgium
NL = Netherlands
PL = Poland

6
SECTION 1 - USERS INSTRUCTIONS
1 USERS INSTRUCTIONS
1.1 INTRODUCTION
The Morco GB IV is a wall mounted, room sealed, condensing
combination boiler, featuring full sequence automatic spark
ignition and fan assisted combustion.
Due to the high efciency of the boiler, condensate is produced
from the ue gases and this is drained to a suitable disposal
point through a plastic waste pipe at the base of the boiler. A
condensate ‘plume’ will also be visible at the ue terminal.
The Morco GB IV is a combination boiler providing both central
heating and instantaneous domestic hot water.
1.2 SAFETY
Current Gas Safety (Installation & Use)
Regulations or rules in force.
In your own interest, and that of safety, it is the law that this boiler
must be installed by a Gas Safe Registered engineer in the UK, in
accordance with the above regulations.
In other countries the installation must be carried out by a
qualied and competent Gas Installer. In the approved country
the boiler is installed, this must be in accordance with their current
rules in force.
It is essential that the instructions in this booklet are strictly
followed, for safe and economical operation of the boiler.
IMPORTANT. These appliances are UKCA & CE certicated
for safety and performance. It is, therefore, important that no
external control devices, e.g. ue dampers, economisers etc.,
are directly connected to these appliances unless covered by
these Installation and Servicing Instructions or as otherwise
recommended by Morco in writing. If in doubt please enquire.
1.3 ELECTRICITY SUPPLY
This appliance must be earthed.
Supply: 230 V ~ 50 Hz. The fusing should be 3A.
1.4 IMPORTANT NOTES
This appliance must not be operated without the casing
correctly tted and forming an adequate seal.
If the boiler is installed in a compartment then the
compartment MUST NOT be used for storage purposes.
If it is known or suspected that a fault exists on the boiler then
it MUST NOT BE USED until the fault has been corrected by a
Gas Safe Registered Engineer or in other countries a qualied
and competent Gas Installer.
Under NO circumstances should any of the sealed
components on this appliance be used incorrectly or tampered
with.
This appliance can be used by children from 8 years
and above and persons with reduced physical,
sensory or mental capabilities or lack of experience
and knowledge if they have been given supervision
or instruction concerning use of the appliance in
a safe way and understand the hazards involved.
Children shall not play with the appliance. Cleaning
and user maintenance shall not be made by children
without supervision.
Children should be supervised to ensure that they
do not play with the appliance.
In cases of repeated or continuous shutdown a Gas Safe
Registered Engineer, or in other countries a qualied and
competent Gas Installer, should be called to investigate and
rectify the condition causing this and carry out an operational test.
Only the manufacturers parts are to be used for replacement.
1.5 MINIMUM CLEARANCES
Clearances of 165mm above, 100mm below, 2.5mm at the sides
and 450mm at the front of the boiler casing must be allowed for
servicing.
Bottom clearance
Bottom clearance after installation can be reduced to 5mm.
This must be obtained with an easily removable panel, to provide
the 100mm clearance required for servicing.
1.6 TO OPERATE THE BOILER
Refer to Boiler Controls
TO START THE BOILER
Start the boiler as follows:
1. Check that the electricity supply to boiler is off.
2. Set the mode knob (C) to ‘OFF’.
3. Set the Domestic Hot Water temperature knob (A) and Central
Heating temperature knob (B) to ‘e’.
4. Ensure that all hot water taps are turned off.
5. Switch on electricity to the boiler and check that all controls,
e.g. timer and room thermostat, are on.
6. Set the mode knob (C) to ‘ ’ (winter).
The boiler will commence ignition sequence, supplying heat to the
central heating, if required.
Note. In normal operation the boiler status display (D) will show codes:
00 Standby - no demand for heat.
CH “80
†
”Central Heating being supplied
H “60
†
” Domestic hot water being supplied
F P “10
†
” Boilerfrostprotection-boilerwillreiftemperatureis
below 5ºC.
†
= temperature shown for example purposes only
During normal operation the burner on indicator (F) will remain
illuminated when the burner is lit.
Note: If the boiler fails to light after ve attempts the fault code
will be displayed (refer to Fault Code page).
1.7 RESTART PROCEDURE
To restart the boiler, press the restart button. The boiler will repeat
the ignition sequence if a heat demand is present. If the boiler
still fails to light consult a Gas Safe Registered Engineer, or in
other countries a qualied and competent Gas Installer.
FOR ANY QUERIES PLEASE RING THE
MORCO CONSUMER HELPLINE : 01482 325456
NOTE. To restart the boiler press the restart button. The boiler will repeat the ignition sequence if a heat demand is
present.

7
SECTION 1 - USERS INSTRUCTIONS
1.8 OPERATION
Winter Conditions - (Central Heating and Domestic Hot Water required)
Set the mode knob (C) to ‘ ’ (winter).
The boiler will re and supply heat to the radiators but will give
priority to domestic hot water on demand.
Summer Conditions - (Domestic Hot Water only required)
Set the mode knob (C) to ‘ ’ (summer).
Set the central heating demand on the external controls to OFF.
Boiler Off
Set the mode knob (C) to ‘OFF’. The boiler mains power supply
must be left on to enable frost protection (see Frost Protection).
Note.Thepumpwilloperatebrieyasaself-checkonceevery24
hours, regardless of system demand.
Control of water temperature
Domestic Hot Water
The DHW temperature is limited by the boiler controls to
65oC maximum at low draw-off rate, adjustable via the DHW
temperature control (A).
Due to system variations and seasonal temperature uctuations
DHW ow rates/temperature rise will vary, requiring adjustment
at the draw off tap : the lower the rate the higher the temperature,
and vice versa.
Approximate temperatures for domestic hot water:
Knob Setting Hot Water Temperature (approx.)
Minimum 40ºC
Maximum 65ºC
Central Heating
The boiler controls the central heating radiator temperature to a
maximum of 80oC and a minimum of 30ºC, adjustable via the CH
temperature control (B).
The boiler is a high efciency combination boiler which is most
efcient when operating in condensing mode.
The boiler will operate in this mode if the CH temperature control
(C) is set to the ‘e’ position (economy mode). This control should
be set to maximum for very cold periods.
1.9 TO SHUT DOWN THE BOILER
Set the mode knob control to “off”.
1.10 WINTERISATION
If the holiday home or park home is to be left unoccupied during
cold periods when there is a threat of freezing, the domestic hot
and cold water circuits must be drained as follows:
- Turn off the cold water supply
- Open all hot and cold water taps
- Open all drain plugs in the hot and cold water system (do not
drain the central heating circuit, which should have been lled
with antifreeze if installed in a caravan holiday home or park
home).
For more detailed information on winterisation please refer to:
• The winterisation fact sheet under troubleshooting at www.
morcoproducts.co.uk
• The holiday home owners handbook
Please note there are no drain plugs on the boiler. Leave all taps
and drain plugs open until next use to allow any residual water to
continue to drain.
When installed in a Caravan Holiday Home or Park Home the
heating circuit and radiators should be lled with an approved
antifreeze (see section 4.8). The level of antifreeze should
be checked annually by a competent person. If the home is
occupied during very cold and freezing weather, the central
heating should be run continuously and the room stat or
thermostatic radiator valves set at a minimum of 15ºC.
If the home is unoccupied for even a short period, the hot and
cold water system must be drained down. This is the only way to
guarantee against frost damage.
ALL FROST DAMAGE IS OUTSIDE OF THE WARRANTY.
1.11 BOILER OVERHEAT PROTECTION
The boiler controls will shut down the boiler in the event of
overheating. Should this occur, a fault code L1 will be displayed.
Refer to fault chart.
1.12 FLAME FAILURE
Should this occur a fault code F2 / L2 will be displayed. Refer to
fault chart.
continued . . . . . .
8 8
restart
min max min max
mode
off
e
restart
IV
A
K
J BFD GE CH
1.13 BOILER CONTROLS
Legend
A. Domestic Hot Water Temperature Knob
B. Central Heating Temperature Knob
C. Mode Knob
D. Boiler Status Display
E. Function Button
F. Burner ‘on’ Indicator
G. Restart button
H. Central Heating Economy Setting
J. Pressure Gauge
K. Timer

8
SECTION 1 - USERS INSTRUCTIONS
1.14 LOSS OF SYSTEM WATER PRESSURE
The pressure gauge indicates the central
heating system pressure. If the pressure is
seen to fall below the original installation
pressure of 1-2 bar over a period of time then
a water leak may be indicated. In this event
re-pressurise the boiler. If unable to do so or
if the pressure continues to drop a Gas Safe
Registered Engineer, or in other countries a
qualied and competent Gas Installer should
be consulted.
INDICATED BY “F1” (LOW WATER PRESSURE) - THE BOILER
WILL NOT OPERATE IF THE PRESSURE HAS REDUCED TO
LESS THAN 0.3 BAR UNDER THIS CONDITION.
1.15 CONDENSATE DRAIN
This appliance is tted with a siphonic condensate trap system
that reduces the risk of the appliance condensate from freezing.
However should the condensate pipe to this appliance freeze,
please follow these instructions:
a. If you do not feel competent to carry out the defrosting
instructions below please call your local Gas Safe Registered
Engineer, or in other countries a qualied and competent Gas
Installer for assistance.
b. If you do feel competent to carry out the following instructions
please do so with care when handling hot utensils. Do not attempt
to thaw pipework above ground level.
If this appliance develops a blockage in its condensate pipe, its
condensate will build up to a point where it will make a gurgling
noise prior to locking out an “L2” fault code. If the appliance is
restarted it will make a gurgling noise prior to it locking out on a
failed ignition “L2” code.
To unblock a frozen condensate pipe;
1. Follow the routing of the plastic pipe from its exit point on the
appliance, through its route to its termination point.
Locate the frozen blockage. It is likely that the pipe is frozen
at the most exposed point external to the building or where
there is some obstruction to ow. This could be at the open
end of the pipe, at a bend or elbow, or where there is a dip in
the pipe in which condensate can collect. The location of the
blockage should be identied as closely as possible before
taking further action.
2. Apply a hot water bottle, microwaveable heat pack or a warm
damp cloth to the frozen blockage area. Several applications
may have to be made before it fully defrosts. Warm water can
also be poured onto the pipe from a watering can or similar.
DO NOT use boiling water.
3. Caution when using warm water as this may freeze and cause
other localised hazards.
4. Once the blockage is removed and the condensate can ow
freely, restart the appliance. (Refer to “To Operate the boiler”)
5. If the appliance fails to ignite, call your Gas Safe Registered Engineer,
or in other countries a qualied and competent Gas Installer.
Preventative solutions:
During cold weather, set the ‘radiator symbol’ to maximum. (Must
return to original setting once cold spell is over.)
Place the heating on continuous and turn the room stat down to 15ºC
overnight. (Return to normal after cold spell.)
1.16 ESCAPE OF GAS
Should a gas leak or fault be suspected contact the Gas Supplier
without delay. TURN OFF ALL GAS SUPPLIES.
Do NOT search for gas leaks with a naked ame.
1.17 CLEANING
For normal cleaning simply dust with a dry cloth.
To remove stubborn marks and stains, wipe with a damp cloth
and nish off with a dry cloth.
DO NOT use abrasive cleaning materials.
1.18 MAINTENANCE
The appliance should be serviced at least once a year by a Gas Safe
Registered Engineer, or in other countries a qualied and competent
Gas Installer.
1.19 MECHANICAL 24 HOUR TIMER
PROGRAMMING THE TIMER
1. Decide what times you would like the timeswitch to switch ON and OFF.
2. Push segments towards the programme ring for an OFF period and
push away from ring for an ON period. The minimum switching
interval is 15 minutes and this can be increased in 15 minute steps.
3. Bring the timeswitch into the correct condition by manually turning
the programme ring clockwise through a 24 hour cycle.
4. Turn the programme ring clockwise until the correct time of day on
the ring lines up with the time indicator.
Note. The segment dial can be turned when the time controller is
operating. In case of power failure, re-adjust the time controller to the
correct time of day, turning the dial in a clockwise direction.
Permanent Override
By rotating the central switch so that the symbol (1) lines up with the
operating mode indicator ( ) the unit will be permanently ON.
With the symbol ( ) lining up with the operating mode indicator ( ) the
unit acts as a timeswitch.
With the symbol ( ) lining up with the operating mode indicator ( ) the
unit will be permanently OFF.
Permanently o Permanently on
Time Indicator
Align current time to arrow
Timer Control
Operating Mode Indicator
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
O
N
P
e
r
i
o
d
O
N
P
e
r
i
o
d

9
SECTION 1 - USERS INSTRUCTIONS
1.20 POINTS FOR THE BOILER USER
Note. In line with our current warranty policy we would ask that you check through the Troubleshooting guide to identify any problems
externaltotheboilerpriortorequestingaserviceengineersvisit.Shouldtheproblembefoundtobeotherthanwiththeappliancewe
reservetherighttolevyachargeforthevisit,orforanypre-arrangedvisitwhereaccessisnotgainedbytheengineer.
YES
YES
NO HOT WATER
Check the mains switch (fused
spur) is turned on and ensure
switch mode control knob (C) is
in the summer or winter position
Is hot water coming out of the
hot water tap when turned on?
NO CENTRAL HEATING
Check the mains switch (fused
spur) is turned on and ensure
switch mode control knob (C) is
in the winter position
Does the boiler operate and
provide central heating?
Check the time settings on the
programmer are as you require
and adjust if necessary
Check the timer is in an
permanently “ON” position and
the room thermostat is turned up
NO HOT WATER OR
CENTRAL HEATING
Check the fused spur is turned
on and ensure switch mode
control knob (C) is in the winter
position
See boiler “Operation Modes”
and “Fault Codes” section
Does the boiler have a display
showing on the front control
panel?
See boiler “Fault Codes”
section. If ‘00’ is displayed
then follow warranty procedure
if your appliance if under
warranty, or contact a Gas
Safe Registered Engineer, or in
other countries a qualied and
competent Gas Installer, if out of
warranty
YES
NO
Contact a Gas Safe Registered
Engineer, or in other countries
a qualied and competent Gas
Installer
NO
See boiler “Operation Modes” and
“Fault Codes” section. If “00” is
displayed then contact a Gas Safe
Registered Engineer, or in other
countries a qualied and competent
Gas Installer
NO
Contact a Gas Safe Registered
Engineer, or in other countries
a qualied and competent Gas
Installer
1.21 TROUBLESHOOTING
1.22 OPERATION MODES
Note. The display alternates between display code and current temperature
DISPLAY CODE ON BOILER DESCRIPTION
The boiler is in standby operation awaiting either a central heating call or hot water
demand.
The boiler has a call for central heating but the appliance has reached the desired
temperature set on the boiler.
The boiler has a call for hot water but the appliance has reached the desired
temperature set on the boiler.
The boiler is operating in central heating mode.
The boiler is operating in domestic hot water mode.
The boiler is operating in frost protection. Note that after the boiler has reached
temperature it will show “dH” for 60s whilst it also protects the DHW circuit.
The boiler mode knob (C) is in the off position, rotate fully clockwise for hot water and
central heating operation.
00
80
80
60
60
1 0
CH
CH
H
FP
--
H
†
†
†
†
†
† = temperature shown for example purposes only.

10
SECTION 2 - GENERAL SPECIFICATIONS
2 SPECIFICATIONS
2.1 GENERAL SPECIFICATIONS
The Morco GB IV range of boilers are wall mounted, full
sequence, automatic spark ignition low water content, fanned ue,
high efciency condensing combination boilers.
Note. Due to the high efciency of the boiler a plume of water
vapour will be visible from the terminal during operation. The
boiler is supplied for use with Propane only at 37mbar (30 mbar
for DE/NL - refer to Countries of Destination) supply pressure. It
is particularly suitable for caravan holiday home and park home
use.
Maximum heat output in heating mode for the GB24 is 24.2 kW
with 24.2 kW available for hot water production.
Maximum heat output in heating mode for the GB30 is 24.2 kW
with 30.3 kW available for hot water production.
The boiler can be supplied with a standard concentric ue with
additional extensions, ue deector and vertical ue kits available
as optional extras. The only ue that can be tted are those
detailed in this instruction manual.
The boiler is suitable for connection to fully pumped, sealed
heating systems ONLY. Adequate arrangements for completely
draining the system by provision of drain cocks must be provided
in the installation pipework.
The boiler contains the following components:
Cast Aluminium Heat Exchanger
Domestic Hot Water Plate Heat Exchanger
Diverter Valve
Circulating Pump
Pressure Gauge
Pressure Relief Valve and Central Heating Expansion Vessel
Automatic Bypass
Daily Pump and Diverter Valve Exercise
Mechanical 24hr Timer
The boiler temperature controls are visible, located in the control
panel. These enable the user to control both CH and DHW
temperatures independently. Operating and fault codes are
displayed on the status panel.
8
11
18
5
19
9
12
4
15
6
2
1
13
7
3
14 10
16
17
1. Expansion Vessel
2. Pump
3. Pressure Relief Valve
4. Water Pressure Switch
5. Flow Thermistor
6. Return Thermistor
7. Diverter Valve
8. Fan
9. Venturi
10. DHW Plate Heat Exchanger
11. Ignition / Detection Electrode
12. Gas Valve
13. Siphon / Trap
14. DHW Flow Turbine
15. Sump Cover
16. Injector Housing
17. Gas Cock
18. Burner
19. Cast Aluminium Heat Exchanger
2.2 SCHEMATIC DIAGRAM

11
SECTION 2 - GENERAL SPECIFICATIONS
2.3 WIRING DIAGRAM
3 2 1 6 5 4 3 2 1 321 654321 654321 654321 87654321 54321 54321
SERVICE
CONNECTOR
4 3 2
1 2 3 4
1
1 2
Chassis
Earth
TIMER
1 2
321
234
1 2 3
321
1 2 3
PELV
X4
230V 50Hz Mains
NO. 2 B2 24V
NO. 5 A2 24V
NO. 6 B1
NO. 4 B3
NO. 3 A3
NO. 1 A1
X6
WPS 5V
X5
FLOW +
FAN FEEDBACK
FAN PWM
FAN GND
PUMP FEEDBACK
PUMP PWM
NC
GAS VALVE -
GAS VALVE +
TURBINE SIGNAL
TURBINEGND
X1
TURBINE 5V
CH LIVE
IGNITION LIVE
PE
X2
PUMP LIVE
DHW LIVE
X3
PUMP GND
X9X8
OWC +
OWC -
OPENTHERM +
OPENTHERM -
CHIPCOM BUS TX
CHIPCOM BUS 24V
CHIPCOM BUS GND
CHIPCOM BUS 5V
CHIPCOM BUS RX
MAINS LIVE
MAINSNEUTRAL
AUXILIARY LIVE
IONISATION
FLOW -
DHW +
DHW -
X7
35 2 1
1 2 3 4 5 6
2
WPS SIGNAL
WPS GND
FLUE +
FLUE -
RETURN +
RETURN -
1
black grey red green blue brown green/yellow orange pink violet yellow white
- - - - - - - - - - - -
bk gy
r
g b
br
g/y
o p
v y
w
KEY
DIVERTOR
VALVE
FAN
PUMP
DHW FLOW
TURBINE
WATER
PRESSURE
SWITCH
RETURN
THERM
FLOW
THERM
GAS
VALVE
SPARK
GENERATOR
IGNITION/DETECTION
ELECTRODE
br
g/y
g/y
g/y
b
r r
bk
bk
b
g/y
b
b
bk
b
gy
r
r
g/y
bk
rgy bk
bk
w brbbr
w
r
r
r
pbpbk y
ybk y p bk
b
bk
rp
r
o
bk bk bk bk
bk
y
v
vbk gy
bk
r
bk gy g
v v
rr

12
SECTION 3 - TECHNICAL DATA
Note. Gas consumption is calculated using a
caloricvalueof95.65MJ/m3gross or 88.0
MJ/m3 nett
To obtain the gas consumption at a different
caloricvalue:
a. For l/s-dividethegrossheatinput(kW)by
thegrossC.V.ofthegas(MJ/m3)
b. For m3/h -multiplyl/sby3.6.
Key to symbols
C13 C33 = A room sealed appliance designed for connection via ducts to a horizontal
or vertical terminal, which admits fresh air to the burner and discharges
the products of combustion to the outside through orices which, in this
case, are concentric. The fan is upstream of the combustion chamber.
I3P = An appliance designed for use on 3rd Family gas, Group P only.
II2H3P = Appliances capable of using gases of Group H and gases of Group P.
* 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 certied by a notied body.
Table 2 - Performance Data - Central Heating
Table 1 General Data
Table 3 - Performance Data - Domestic Hot Water
Maximum DHW Input : 24 30
Nett CV kW 24.3 30.4
Gross CV kW 27 33.7
Gas Consumption m3/h 1.00 1.25
kg/hr 1.83 2.26
Maximum DHW Output kW 24.2 30.3
DHW Flow Rate l/min 9.9 12.4
at 35°C temp. rise. gpm 2.2 2.8
DHW Specic Rate l/min 11.5 14.5
gpm 2.5 3.2
Morco GB IV 24 30
Gas Supply** II2H3P - G31 - 37mbar (I3P G31 - 30mbar DE/NL) (I3P G31 - 37mbar BE/NL/PL)
Gas Supply Connection 15mm copper compression
Injector Size mm 3.75 3.75
Inlet Connection Domestic Hot Water G ½
Outlet Connection Domestic Hot Water G ½
Flow Connection Central Heating G ¾
Return Connection Central Heating G ¾
Flue Terminal Diameter mm 100
Average Flue Temp-Mass Flow Rate DHW 63ºC - 11 g/s 68ºC - 13 g/s
CO2 Content (± 0.7) Max. DHW 11.0 % 11.1 %
Min. CH/DHW 10.0 % 10.0 %
Maximum Working Pressure (Sealed Systems) bar (lb/in2) 2.5 (36.3)
Maximum Domestic Hot Water Inlet Pressure bar (lb/in2) (kPa) 10.0 (145) (1000)
Minimum Domestic Hot Water Inlet Pressure* bar (lb/in2) (kPa) 0.8 (11.6) (80) 1.3 (18.9) (130)
Electrical Supply 230 V - 50 Hz.
Power Consumption W 79 75
Fuse Rating External : 3A Internal : T4H HRC L250 V
Water Content Central Heating litre (gal) 1.2 (0.26)
Domestic Hot Water litre (gal) litre (gal) 0.5 (0.11)
Packaged Weight kg 32.9 32.9
Maximum Installation Weight kg 30 30
Boiler Casing Size Height mm 700
Width mm 395
Depth mm 285
Max. Min.
Boiler Input : 24 30 24 30
Boiler Input ‘Q’ Nett CV kW 24.3 8 8
Gross CV
kW 26.4 8.7 8.7
Gas Consumption m3/h 1.0 0.329 0.329
kg/hr 1.83 0.600 0.600
Boiler Output : 24 30 24 30
Non Condensing 70° C
Mean Water Temp.
kW 24.2 8 8
Condensing 40° C
Mean Water Temp.
kW 25.6 8.5 8.5
Seasonal efciency* SEDBUK
2005 24kW = 91.0 30kW = 91.1
Seasonal efciency* SEDBUK
2009 24kW = 89.0 30kW = 89.0
NOx Classication CLASS 6
3 TECHNICAL DATA
3.1 DATA TABLES
*Requiredformaximumowrate.Boileroperatesdownto2l/minDHWdelivery
**Refer to Destination Countries Section

13
SECTION 3 - TECHNICAL DATA
3.2 BOILER DIMENSIONS, SERVICES & CLEARANCES
The following minimum clearances must be maintained for
operation and servicing.
Additional space will be required for installation, depending upon
site conditions.
Side and Rear Flue
a. Provided that the ue hole is cut accurately, e.g. with a core
boring tool or hole cutter the ue can be installed from inside
the dwelling where wall thicknesses do not exceed 600mm.
Where the space into which the boiler is going to be installed
is less than the length of ue required the ue must be tted
from the outside.
Installation from inside ONLY
b. If a core boring tool or hole cutter is to be used inside the
dwelling the space in which the boiler is to be installed must
be at least wide enough to accommodate the tool.
In either of the above cases safe external access is required
to allow the addition of sealant to seal around the ue to the
aluminium ue collar (RSF 060).
Front clearance
The minimum front clearance when
built in to a cupboard is 5mm from
the cupboard door but 450mm overall
clearance is still required, with the
cupboard door open, to allow for
servicing.
Bottom clearance
Bottom clearance after installation
can be reduced to 5mm.
This must be obtained with an easily
removable panel, to enable the
consumer to provide the 100mm
clearance required for servicing.
Max 30kW
Max 24kW
2. For ue lengths requiring extensions (RSF 341), the ue must incline by 26mm per 1 Metre of ue length.
DATA PLATE
CH FLOW
DHW OUTLET
COND. DRAIN
GAS INLET
DHW INLET
CH RETURN
PRV
W A L L
Underside View - Dimensions to Wall
3952.5 2.5
from case
700
Side
flue
dim. A
285
86.5
17
155
43.5 65 28.5 28.5 60.5 75 39.554.5
WALL
103
34
9910399
103

14
SECTION 4 - GENERAL INSTALLATION REQUIREMENTS
4 GENERAL INSTALLATION
REQUIREMENTS
4.1 RECOMMENDATIONS
Current Gas Safety (Installation and Use) Regulation or Rules in Force.
The boiler is suitable only for installation in the specied countries
and should be installed in accordance with the rules in force.
In GB, the installation must be carried out by a Gas Safe
Registered Engineer, or in other countries a qualied and
competent Gas Installer. It must be carried out in accordance with
the relevant requirement of the:
• Gas Safety (Installation and Use) Regulations
• Applicable National Standards
• Water Supply (Water Fittings) Regulations 1999 England
and Wales, Water Supply (Water Fittings) (Scotland)
Byelaws 2014, Water Supply (Water Fittings) Regulations
(Northern Ireland) 2009
• IET Wiring Regulations (BS 7671)
• The Electricity at work Regulations 1989 (SI 1989/635 as
amended)
• BS 6891:2015+A1:2019 Specication for the installation
and maintenance of low pressure gas installation pipework
of up to 35 mm (R11/4) on premises.
• BS EN 1949:2021 - Specication for the installation of LPG
systems for habitation purposes in leisure accommodation
vehicles and accommodation purposes in other vehicles.
IMPORTANT: The manufacturer’s notes MUST NOT be taken, in
any way as overriding statutory obligations.
4.2 BOILER LOCATION
The boiler must be installed on a at and vertical wall, capable of
adequately supporting the weight of the boiler and any ancillary
equipment.
The boiler may be tted on a combustible wall and insulation
between the wall and the boiler is not necessary unless required
by National Standards.
For Electrical Safety reasons there must be no access available
from the rear of the boiler.
The boiler must not be tted outside.
BATHROOM INSTALLATIONS
This appliance is rated IP20.
The boiler may be installed in any room or internal space, although
particular attention is drawn to the requirements of the current IET
Wiring Regulations (BS7671:2018 as amended) and the electrical
provisions of the building regulations applicable in Scotland,
with respect to the installation of the boiler in a room or internal
space containing a bath or shower. For IE reference should be
made to the applicable NSAI Rules for Electrical Installations, IS
10101:2020 and IS 813:2002.
If the appliance is to be installed in a room containing a bath or
shower then, providing water jets are not going to be used for
cleaning purposes (as in communal baths/showers), the appliance
must be installed beyond Zone 2, as detailed in BS 7671.
0.6m
Zone 0
Recessed
window
Zone 2
Ceiling
3G8913a
2.25m
Zone 1
COMPARTMENT INSTALLATIONS
A compartment used to enclose the boiler should be designed
and constructed specially for this purpose.
An existing cupboard or compartment may be used, provided
that it is modied for the purpose.
Braces for compartments must be easily removable for service access.
• The position selected for installation MUST allow adequate
space for servicing in front of the boiler.
4.3 FLUE TERMINAL POSITION
Pluming will occur at the terminal so avoid locations where this
will cause a nuisance.
The boiler MUST be installed so that the terminal is exposed to
external air.
It is important that the positions of the terminal allows the free
passage of air across it at all times.
Minimum acceptable spacing from the terminal to obstructions
and ventilation pump are specied in the table below.
For Caravan Holiday Homes; if the height of the ue terminal
from any ground, decking or steps is under 1.5m then a suitable
terminal guard should be tted.
For Residential Park Homes, please refer to BS 5440-1:2008.
White Flue Outer
Black Flue
Exhaust Outlet
300mm
Ventilation for the living space
or opening part of a window
APPLIES TO HOMES
BUILT TO BS EN1949
External
Wall
*Onlyonereductiondownto25mmisallowableperinstallationotherwise
BS5440-12008dimensionsmustbefollowed.
Table 4 - Balanced Flue Terminal Position
Flue Terminal Positions Min Spacing*
Horizontal Terminals
1. Directly below, above or alongside an opening window,
air vent or other ventilation opening.
300mm (see
diagram below)
2. Below Guttering, drain pipes or soil pipes. 75mm (25mm*)
3. Below eaves. 200mm (25mm*)
4. Below balconies or a car port roof. 200mm (25mm*)
5. From vertical drain pipes or soil pipes. 200mm (25mm*)
6. From an internal or external corner or to a boundary
along side the terminal. 300mm (25mm*)
7. Above adjacent ground, roof or balcony level. 300mm
8. From a surface or a boundary facing the terminal. 600mm
9. From a terminal facing a terminal. 1,200mm
10. From an opening in a car port (e.g. door or window)
into dwelling. 1,200mm
11. Vertically from a terminal on the same wall. 1,500mm
12. Horizontally from a terminal on the wall. 300mm
Vertical Terminals
13. Above the roof pitch with roof slope of all angles, or
above a at roof. 300mm
14. From a single wall face, or from corner walls. 300mm
15. Below velux window. 2000mm
16. Above or side of velux window. 600mm
The 300mm distance should be measured as the shortest distance between
theedgeoftheopening,andtheinnerexhausttube,whichis20mminside
thewhiteoutertubeoftheue.Thiswillresultinthedistancefromtheedge
oftheopeningtotheoutertubeoftheuebeing280mmminimum.

15
SECTION 4 - GENERAL INSTALLATION REQUIREMENTS
4.4 AIR SUPPLY
It is NOT necessary to have a purpose provided air vent in the
room or internal space in which the boiler is installed. Neither is
it necessary to ventilate a cupboard or compartment in which the
boiler is installed, due to the low surface temperature of the boiler
casing during operation.
4.5 ELECTRICAL SUPPLY
WARNING
This appliance MUST be earthed.
Wiring external to the boiler MUST be in accordance with the
correct IET Regulations and any local regulations.
The boiler has been pre-tted with a 3 amp fused approved
moulded 3 pin plug and ying lead, for use with 230V 50Hz.
The plug should be used with an unswitched/shuttered socket
outlet complying with BS1363.
If using an off grid electrical supply please consult a suitably
qualied electrician.
4.6 GAS SUPPLY
A propane gas supply at 37mbar is required (30 mbar for DE).
Ensure that regulator is of sufcient capacity to carry the maximum
boiler input plus the full demand for any other installed appliances.
Ensure the connection between supply/cylinder to caravan holiday
home or park home is designed so that no pressure drop occurs.
Ensure the pipework is of sufcient size to prevent a pressure
drop greater than 2.0mbar between the nal pressure regulator to
the caravan holiday home or park home and all appliances when
the installation is subjected to the anticipated maximum load.
IMPORTANT
Ensure all gas valve connections are gas tight with a gas
soundness check up to the gas control valve.
The complete installation MUST be tested for gas soundness.
4.7 CONDENSATE DRAIN
A condensate drain is provided on this boiler.
The drain MUST be connected to an approved drainage point.
All pipework and ttings MUST be made of plastic or purpose
designed materials may be used.
Suitable protection against freezing should be undertaken.
4.8 WATER SYSTEMS - GENERAL
This boiler is designed for connections to fully pumped sealed
system only.
IMPORTANT - A minimum length of 1 metre of copper pipe
MUST be tted to both central heating and DHW ow and return
connections from the boiler before connection to any plastic piping.
Central Heating System
IMPORTANT - The sealed central heating system must be lled
at all times with an antifreeze / inhibitor and water mix that is
compatible with aluminium heat exchangers. The concentration
levels of the antifreeze / inhibitor should be at least 25% in order
to provide adequate corrosion protection. This level also provides
protection against frost from -7.5ºC to -11ºC (depending on the
product used). The maximum allowable level of antifreeze /
inhibitor is around 40%, giving -22°C protection.
The only products approved are as follows:
- Fernox Alphi 11
- Sentinel X500
Failure to use these products may result in damage to the boiler
and / or the radiators in the heating system.
4.9 REQUIREMENTS FOR SEALED WATER
SYSTEMS
At maximum CH output 24.2 kW (GB24) & 24.2 (GB30) at a 20ºC
differential and ow rate 17.3 l/min (GB24) & 17.3 l/min (GB30) a
3.4m wg head is available for the system
Set all radiators to give around 20ºC temperature differential.
The boiler does not normally need a bypass but at least some
radiators of load at least 10% of the minimum boiler output.
These radiators should be tted with lock/wheelhead shield valves
only.
A sealed system MUST only be lled by a competent person using
an approved lling loop (or other approved method) between the
mains water supply pipe and the central heating return pipe.
Once used, the lling loop should be disconnected and capped off.
4.10 EXPANSION VESSEL
The boiler is tted with an 8 litre expansion vessel which is
sufcient for a cold ll capacity of up to 143 litres.
For other system volumes refer to table below.
Pressure relief valve setting bar 3.0
Vessel charge pressure bar 0.5 to 0.75
System pre-charge pressure bar None 1.0
System volume Expansion vessel
(litres) volume (litres)
25 1.6 1.8
50 3.1 3.7
75 4.7 5.5
100 6.3 7.4
125 7.8 9.2
150 9.4 11.0
175 10.9 12.9
190 11.9 14.0
200 12.5 14.7
250 15.6 18.4
300 18.8 22.1
For other system volumes
multiply by the factor across 0.063 0.074
4.11 PRESSURE RELIEF VALVE
A pressure relief valve set at 3 bar is tted to the boiler. The
connection is shown in the dimensions and connection details.
The discharge pipework must be suitable for use with 3bar water
at 110ºC without damage to property and persons.
The run and exit point of the pipework should not leave a hazard
or be prone to freezing up.
4.12 DHW SYSTEMS
Check that the mains supply pressure is within the units stated in
the technical data section in this manual
A pressure reducing valve should be tted if above 10 bar.
In areas of low mains water pressures the domestic hot water
restrictor may be removed (by a suitably qualied person). The
boiler will require the ow rate to be set to give a temperature of
35ºC at the tap furthest from the boiler.
In hard water areas where mains water exceeds 200ppm total
hardness, the tting of a scale reducing device is recommended
(with the requirements of the local water company).
The use of articially softened water, however, is not permitted.
The boilers are suitable for connection to most types of washing
machine and dishwasher appliances.

16
SECTION 5 - INSTALLATION INSTRUCTIONS
5 INSTALLATION INSTRUCTIONS
5.1 BOILER PACKAGING
The boilers are supplied in different packagings:
• Boiler
• Flue System (separate)
5.2 FITTING/MOUNTING THE BOILER
Decide where the boiler is to be xed on the wall, taking into
account installation requirements detailed in previous section.
1. Screw the wall mounting plate to the wall choosing one of the
two sets of slots in left and right bank. Ensuring that at least
one of the screws is tted into a top slot.
2. Lift the boiler onto the wall mounting plate, locating it over the
two tabs.
Note.Ifpresent,removethebottomendsupportpackaging
andensureallplasticplugsareremovedfromCH&DHW
connections.
5.3 WIRING INSTRUCTIONS
WARNING: THIS APPLIANCE MUST BE EARTHED
Connections must be made in such a way that allows complete
isolation of the electrical supply, e.g. double pole switch with
3mm contact separating in both poles.
N
L
N
ROOM
STAT/
TIMER
Room
Stat
230VAC Feed
230VAC Return
5.4 INTERNAL WIRING
The boiler has been pre-tted with a 3 amp fused approved
moulded 3 pin and ying lead for use with 230V 50Hz.
If the supply cord is damaged, it must be replaced by the
manufacturer, its service agent or similarly qualied persons in
order to avoid a hazard.
The plug should be used with an
unswitched/shuttered socket outlet
complying with BS1363.
The boiler comes pre-tted with a link
wire between the room thermostat/
timer connections on the terminal strip.
This creates a permanent call for heat
and must be removed when adding a
room thermostat.
5.5 ROOM THERMOSTAT - WIRING
To t a room thermostat proceed as follows:
1. Ensure that the electrical supply to the boiler is isolated before
proceeding.
2. Remove the two screws beneath the ap on the front of the
boiler and lower the front panel.
3. Remove the pre-tted link wire between the Room stat/timer
terminals.
4. Pass the cable through a grommet, secure with the cable
clamp and connect the room stat as shown in the diagram
below.
5. If room stat has a neutral connection, connect this to terminal
N (load) in the fused spur.
6. Carry out all necessary electrical checks.
7. Raise the front panel and relocate the two screws under the
small ap.
8. Check operation of room stat if possible.
5.6 OPENTHERM WIRING
To t an optional Opentherm Controller proceed as follows:
1. Ensure that the electrical supply to the boiler is isolated before
proceeding.
2. Remove the screw beneath the ap on the front of the
boiler, and lower the front panel.
3. Remove the pre-tted link wire between the Opentherm
terminals on the right hand side of the front panel.
4. Pass the two wires from the Opentherm controller through
a grommet, and connect one to each of the two Opentherm
terminals.
5. Raise the front panel and relocate the screw.
6. Check operation if possible.
Example of fixing
Cable
Clamp

17
SECTION 5 - INSTALLATION INSTRUCTIONS
5.7 WATER AND GAS CONNECTIONS
Ensure all boss blanking plugs are removed before making any connections.
Each valve must be tted to the correct boss as shown in diagram below
Do not subject any of the isolating valves to heat as the seals may be damaged.
Ensure that the green bre washer is used on the CH ow connection.
IMPORTANT - The gas service cock is sealed with a top hat washer - DO NOT subject to heat.
Pressure Relief Valve (PRV) - Located at the bottom right hand side of the boiler connection via a 15mm diameter stub pipe.
Use a replaceable connection to ease the replacement of the valve if required.
Ensure a safe discharge point using temperature and pressure resistant materials.
5.8 AIR / FLUE SYSTEMS
The ue system is part of the appliance and is approved as such. Only use the ue systems supplied by Morco.
The standard ue kit (RSF303) for the Morco GB IV range is a 600mm as shown below. There is also a 900mm kit available
(RSF305).
600
Turret
60
60
100
CH FLOW
DHW OUTLET
COND. DRAIN
GAS INLET
DHW INLET
CH RETURN
PRV
Part No. RSF303
The minimum cut length is 138mm (includes 30mm into elbow)
The maximum allowable length using extensions (RSF341) is:
GB24 IV - 8m (minus any ue kit options)
GB30 IV - 7m (minus any ue kit options)
All dimensions in mm

18
SECTION 5 - INSTALLATION INSTRUCTIONS
5.9 DETERMINING THE FLUE LENGTH
IMPORTANT. The boiler must be installed in a vertical position in accordance to the installation instructions.
STANDARD FLUE KITS
Horizontal Flue Terminal RSF303 (600mm long) - contains: Flue turret, non telescopic single piece ue incorporating a terminal
and inner rubber wall seal.
Extension Kit RSF341 - contains: 1 metre length of ue pipe (Functional length 950mm), 1 support bracket.
Whenextensionkitsareusedtheueductmustincline1.5degreesawayfromtheappliance,toallowthecondensatetodrainbackto
theboilerandoutofthecondensatedrain.Itisrecommendedthatasupportbracketisttedonevery1metreofpipeworkusedandthe
bracketislocatedasclosetothecollaraspossible.Thebracketingmustensurea1.5degreefallbacktotheappliance.
Only use water as a lubricant during assembly.
The horizontal ue kit terminal is classed as part of the maximum ue length.
Once the ue is installed it is IMPORTANT that the white air duct protrudes from the aluminium ue collar (RSF 060) by at
least 17mm. The gap between the aluminium ue collar (RSF 060) and the white air duct MUST be sealed with sealant to
create an adequate seal.
WALL
Aluminium Flue
Collar (RSF 060)
Fill with
sealant
17mm min
Internal Sealing
Flubber
Fill with
sealant
It is IMPORTANT that all attachments are tted in accordance with the installation instructions provided in this manual.
The turret supplied in the Horizontal Flue Kits (RSF303 & RSF305) has an upper combustion sample point with a screw cap seal and
a lower air sample point with an air stopper seal. Ensure all caps & seals are in place.
Additional Termination Kits available for use with these Horizontal Flue Kits (RSF303 & RSF305)
Flue Deector Kit (RSF300) The resistance is the equivalent of 1 metre of ue pipe and therefore must be deducted from
any maximum ue length
Total Maximum Permissible Horizontal Concentric Flue Length combining both Horizontal Flue Kits and Extension Kits
(Measured from centreline of the turret to the outside face of the aluminium ue collar (RSF060))
24 kW appliances Total Maximum: 8 metres - minus any ue kit options
30 kW Appliances Total Maximum: 7 metres - minus any ue kit options
Total Maximum Permissible Vertical Flue Length
24 & 30kW Appliances Total Maximum: 7.5 Metres - minus any 90º bends
Minimum Horizontal Flue Lengths (Centre line of turret to outside face of the aluminium ue collar (RSF060))
Rear Flue - 191mm
Side Flue - 236mm (with minimum 2.5mm clearance)

19
SECTION 5 - INSTALLATION INSTRUCTIONS
5.10 DETERMINING THE FLUE LENGTH
5.11 CUTTING HORIZONTAL FLUE TERMINAL RSF303 (600MM LONG)
10mm
Mark cut length =
A or B + 47mm from terminal lip
1. Measure from the outer terminal lip to end of outer ue. Mark the
required cut length (A or B + 47mm) around the circumference of the
outer ue and cut following the mark to ensure it is cut square.
2. Dress the cut end to make sure all burr’s are removed and the cut
edge is in its original shape.
3. Mark the inner tube 10mm longer than the outer tube around its
circumference and cut following the mark to make sure it is cut
square.
4. Remove all burrs and place a light chamfer on the outer edge to aid
assembly.
Centre of turret to edge of turret = 100mm
Turret has a ue insertion of 30mm
The white outer ue tube must protrude the wall by 17mm.
From centreline of turret to wall. Rear mount 155mm, side (including clearance) 200mm
NOTES
REAR
Fit
to wall
A
Flue length measured from outer terminal lip
to end of outer ue
A or B + 47mm
SIDE
Fit
to wall
B
Minimum clearance 2.5mm
WALL
WALL
FIGURE 1
REAR FLUE
Cut ue length = distance from edge of turret to outside of
wall dimension A + 47mm.
Note.MinimumdimensionAwhichcanbeaccommodatedis
91mm.
SIDE FLUE
Cut ue length = distance from edge of turret to outside of
wall dimension B + 47mm.
Note.MinimumdimensionBwhichcanbeaccommodatedis
136mm(withminimumclearanceof2.5mm).

20
SECTION 5 - INSTALLATION INSTRUCTIONS
5.12 INSTALLING THE FLUE
FITTING FLUE THROUGH THE WALL
1. Ensure the seam and the outlet terminal are
at the top and tted as shown.
2. Once the ue is installed it is IMPORTANT
that the white air duct protrudes from the
aluminium ue collar (RSF 060) at least
17mm.
Note. If lessthan50%ofthelengthoftheueis
internaltheueshouldbettedfromoutside.
3. Fit the internal sealing ubber to the ue
(leave loose) and check protrusion externally
of the white air duct is 17mm.
4. Fit the turret as below
FITTING THE TURRET - Ensure the condensate trap / siphon is lled with water
1. Ensure the rubber seal is tted correctly on the appliance manifold and that all ue seals are undamaged.
2. Hold the ue rmly and push the turret on until it has travelled 30mm on to the ue pipe and is fully engaged. Make sure the
ue has not rotated or moved forward during tting and the ue seam is upper most.
3. Push the turret into the manifold ensuring the upper plastic lip is ush with the top of the manifold.
4. Fully engage the clamp location section into the manifold location holes. Rotate down on to turret ange.
5. Secure clamp to appliance using securing screw.
6. Ensure all sample points are accessible and all sample plugs and caps are tted.
7. Fully engage the ue into the turret and slide internal ubber to wall.
8. The gap between the aluminium ue collar (RSF 060) and the white air duct MUST be sealed with sealant to create a seal.
Flue Outlet
C
A
A - Duct Assembly
B - Flue Turret
C - Turret Clamp
D - Seal
Flue Outlet
D
B
Retaining
screw
Clamp Lugs
Sample points
WALL
Aluminium Flue
Collar (RSF 060)
Fill with
sealant
17mm min
Internal Sealing
Flubber
Fill with
sealant
5” hole