background image

6

B004

The technical information and instructions provided herein below are intended
for the installer so that the unit may be installed correctly and safely.

The installation and initial startup of the boiler must be by a CORGI Approved
Installer in compliance with the installation standards currently in effect, as well
as with any and all local health and safety standards i.e. CORGI.

This appliance must be installed by a competent installer in
accordance with the current Gas Safety (installation & use)
Regulations

The installation of this appliance must be in accordance with the relevant
requirements of the current Gas Safety (installation & use) Regulations, the
Local Building Regulations, the current I.E.E. Wiring Regulations, the byelaws
of the local water authority, and in Scotland, in accordance with the Building
Standards (Scotland) Regulation and Health and Safety document No. 635
“Electricity at work regs. 1989”.
Installation should also comply with the following British Standard Codes of
Practice:

The appliance may be installed in any room or indoor area, although particular
attention is drawn to the requirements of the current I.E.E. Wiring Regulations,
and in Scotland, the electrical provisions of the Building Regulations applicable
in Scotland, with respect to the installation of the combined appliance in a room
containing a bath or shower.
Where a room-sealed appliance is installed in a room containing a bath or
shower the boiler and any electrical switch or appliance control, utilising
mains electricity should be situated so that it cannot be touched by a
person using the bath or shower.
The location must permit adequate space for servicing and air circulation
around the appliance as indicated in paragraph 2.4.
The location must permit the provision of an adequate flue and termination.
For unusual locations special procedures may be necessary.
BS 6798-1987 gives detailed guidance on this aspect.
A compartment used to enclose the appliance must be designed specifically for
this purpose. No specific ventilation requirements are needed for an installation
within a cupboard 
This appliance is not suitable for outdoor installation.

The type C appliances (in which the combustion circuit, air vent intake
and combustion chamber are air-tight with respect to the room in which
the appliance is installed) can be installed in any type of room.
There are no limitations with respect to ventilation and the volume of the room
itself. The boiler must be installed on a solid, permanent wall to prevent access
to the electrical parts (when live) through the aperture on the back frame.

2.

INSTALLATION

2.1

Reference Standards

2.2

Siting the Appliance

Low pressure 
pipes

BS 6891

1988

Boilers of rated input
not exceeding 60 kW

BS 6798

1987

Forced circulation hot 
water system

BS 5449

1990

Installation of gas hot water
supplies for domestic purposes
( 2

nd

family gases)

BS 5546

1990

Flues

BS 5440-1

1990

Air supply

BS 5440-2

1989

Summary of Contents for GENUS 27 MFFI

Page 1: ...Installation Instructions Type C Boilers G C N 41 116 01 47 116 08 47 116 09 47 116 13 LEAVE THESE INSTRUCTIONS ADJACENT TO THE GAS METER Country of destination GB...

Page 2: ...2 10 Room Thermostat Connection 2 11 Electrical System Diagrams 2 12 Water Circuit Diagrams 3 COMMISSIONING 3 1 Initial Preparation 3 2 Removing the Casing 3 3 Control Panel 3 4 Initial Start up 3 5...

Page 3: ...erty You will find the data plate on the reverse of the control panel The gas with which this appliance operates is also shown on the label at the bottom of the boiler Do not install this appliance in...

Page 4: ...sel Pre load Pressure bar 1 1 1 1 Maximum Water Content in System l 145 145 145 145 Maximum Heating Pressure bar 3 3 3 3 Nominal Pressure Natural Gas G20 G25 mbar 20 25 20 25 20 25 20 25 Liquid Gas G3...

Page 5: ...orised Valve RFFI 10 Main Circuit Temperature Probe 11 Main Circuit Flow Switch 12 Domestic Hot Water Temperature Probe 13 Diverter Valve Microswitch 14 Filter Seat 15 Drain Valve 16 Secondary Heat Ex...

Page 6: ...sealed appliance is installed in a room containing a bath or shower the boiler and any electrical switch or appliance control utilising mains electricity should be situated so that it cannot be touche...

Page 7: ...A B D E C 465 99 99 132 67 65 85 155 208 30 49 F G A D E C AF C DGE GENUS 23 27 30 MFFI GENUS 27 RFFI SYSTEM In order to allow for access to the interior of the boiler for maintenance purposes the boi...

Page 8: ...l as follows The yellow green wire should be connected to the terminal marked with the earth symbol make sure to re use the ferrule mounted on the other supply cord The blue wire should be connected t...

Page 9: ...uitable only for sealed systems Drain Cocks These must be located in accessible positions to permit the draining of the whole system The taps must be at least 15mm nominal size and manufactured in acc...

Page 10: ...nter and one for the summer This enables the flow rate through the appliance to be adjusted so that a sensible D H W temperature may be achieved throughout the year Domestic Water The domestic water m...

Page 11: ...terminal facing a terminal 1200 J From an opening in the car port e g door window into dwelling 1200 K Vertically from a terminal in the same wall 1500 L Horizontally from a terminal in the same wall...

Page 12: ...air vent intake located on the top part of the combustion chamber A A A Fig 2 8 This procedure must be done as follows 1 Remove the air vent intake you want to use in the area indicated in Fig 2 9 by...

Page 13: ...13 B004 In Fig 2 11 below several different types of flue systems are shown For additional information regarding the flue accessories please consult the Flue Pipe Accessories manual Fig 2 11...

Page 14: ...cated in the table 4 The exhaust pipe must extend at least 0 5 m above the ridge of the roof if it is located on a side other than that for the air intake this is not obligatory if the exhaust and air...

Page 15: ...tat these must be connected in series as per points 1 8 above Note Only a two wire type room thermostat can be used For details on fitting the D H W probe Genus 27 RFFI only please consult the separat...

Page 16: ...ection Q On Off L E D R On Off Switch S Interface Wire for P C B s T Relay Motorised Valve U Ignitor Relay V Gas Valve Relay W Fan Relay X Circulation Pump Relay Y Selector TCS2 Z Link for Continuous...

Page 17: ...17 B004 Aa GENUS 23 27 30 MFFI Aa GENUS 27 RFFI SYSTEM...

Page 18: ...18 B004 CN202 P GENUS 23 27 30 MFFI P GENUS 27 RFFI SYSTEM...

Page 19: ...cluding Safety Pressure Switch for Primary Circuit 11 Automatic By pass 12 Microswitch for Diverter Valve 13 Sensor for Domestic Hot Water 14 Secondary Heat Exchanger 15 Domestic Water Inlet Filter 16...

Page 20: ...r inlet cock supplied with the connection kit Open slowly each draw off tap and close it only when clear water free of bubbles is visible Gas Supply Inspect the entire installation including the gas m...

Page 21: ...ition Lockout L E D C Selector Knob for Summer Winter Flue Analysis Modes D Low System Water Level L E D E Temperature Adjustment Knob for Domestic Hot Water F Heating System Thermometer G Safety Over...

Page 22: ...e lines Loosen the cap on the head of the pump to eliminate any air pockets Repeat the procedure for bleeding the radiators of air Open the taps for a brief period Check the system pressure and if it...

Page 23: ...a shutdown status With a differential manometer connected to the test socket on the combustion chamber the DP value for the air pressure switch can be taken The measured value should not be less than...

Page 24: ...fety pressure switch on the primary circuit has not sensed a pressure of at least 1 bar within 40 seconds of the activation of the circulation pump it shuts off the boiler and lights the L E D D The s...

Page 25: ...5 C 1013mbar mc h 3 49 Consumption 15 C 1013mbar Kg h 2 60 2 57 Gas Cock Outlet Pressure max min mbar 11 4 1 4 4 1 5 6 25 B004 The outlet pressure of the gas cock is obtained by completely loosening t...

Page 26: ...ssembly clean the exhaust fan if needed 8 Adjustment of the flow rate of the gas flow rate for lighting partial load and full load 9 Check of the heating safety systems safety device for maximum tempe...

Page 27: ...201 6 3 E 1 2 Towerchron FP 6 1 0 2 1 Link 1 5 4 7 9 Towerchron MP 6 1 0 2 1 Link 1 4 6 11 Towerchron 2000 HW HTG N L ON ON ACL LS522 LS722 3 4 N L Randall 922 972 3 6 E N L Link L 2 5 Randall 3020 P...

Page 28: ...4 E 1 2 Link 2 3 6 Sunvic DHP 2201 6 3 E 1 2 Towerchron FP 6 10 2 1 Link 1 5 4 7 9 Towerchron MP 6 10 2 1 Link 1 4 6 11 Towerchron 2000 HW HTG N L ON ON ACL LS522 LS722 3 4 N L Randall 922 972 3 6 E N...

Page 29: ...B004 NOTES...

Page 30: ...30 B004 NOTES...

Page 31: ...31 B004...

Page 32: ...e f f f f e e RECANATI Manufacturer Merloni TermoSanitari SpA Italy Commercial subsidiary MTS GB LIMITED MTS Building Hughenden Avenue High Wycombe Bucks HP13 5FT Telephone 01494 755600 Fax 01494 459...

Reviews: