5
GENERAL
icos system - Installation and Servicing
CONTENTS
Air Supply ....................................................................... 9
Benchmark Commissioning Checklist ..................... 66
Boiler Clearances ......................................................... 8
Boiler Interlocks .......................................................... 10
Boiler Exploded Diagram ...................................... 12, 13
Condensate Drain .......................................... 10, 22, 23
Electrical Connections ............................................... 31
Electrical Supply ......................................................... 10
Extension Ducts - Fitting ............................................. 20
Fault Finding ........................................................... 53-57
Flow Wiring Diagram .................................................. 34
Flue Fitting .................................................................... 16
Flue Installation ............................................................. 9
Gas Safety Regulations ................................................ 7
Gas Supply ..................................................................... 9
Installation ............................................................. 13-37
Mandatory Requirements ....................................... 7-12
Pump .......................................................................... 50
Safe Handling ................................................................ 6
Servicing ................................................................ 38-52
Short List of Parts ....................................................... 58
Thermostatic Radiator valves ................................... 10
Water and Systems ................................................ 9-12
Water Connections ..................................................... 30
Water Treatment ......................................................... 12
Wiring Diagrams ................................................... 32-34
Boiler Page
Make and model ....................................................... 5
Appliance serial no. on data badge ....... Front Cover
SEDBUK No. % ......................................................... 4
Controls
Time and temperature control to heating ............. 32
Time and temperature control to hot water .......... 32
Heating zone valves ..............................................n/a
TRV's ...................................................................... 10
Auto bypass ........................................................... 10
Boiler interlock ....................................................... 10
For all boilers
Flushing to BS.7593 .............................................. 12
Inhibitor .................................................................. 12
Central heating mode
Heat input ................................................to be calculated
For assistance see Technical Helpline on the back page
Page
Burner operating pressure .................................... n/a
Central heating flow temp. ...... measure and record
Central heating return temp. ... measure and record
For combination boilers only
Scale reducer ......................................................... n/a
Hot water mode
Heat input ............................................................... n/a
Max. operating burner pressure .............................. n/a
Max. operating water pressure ............................. n/a
Cold water inlet temp ............................................ n/a
Hot water outlet temp. ...........................................n/a
Water flow rate at max. setting .............................. n/a
For condensing boilers only
Condensate drain .................................................. 22
For all boilers: complete, sign & hand over to customer
For GB, to comply with Building Regulations Part L1 (Part 6 in Scotland) the boiler should be fitted in accordance with the
manufacturer's instructions. Self-certification that the boiler has been installed to comply with Building Regulations can be
demonstrated by completing and signing the Benchmark Commissioning Checklist.
Before installing this boiler, read the Code of Practice sheet at the rear of this book.
icos system HE15 & HE24
Natural Gas only
Boiler size G.C. Appliance No. PI No.
(Benchmark No.)
HE15 41 421 99 87 BP 34
HE24 41 397 82 87 BP 34
Destination Countries: GB, IE
BENCHMARK COMMISSIONING CHECKLIST DETAILS
NOTE TO THE INSTALLER:
COMPLETE
THE BENCHMARK COMMISSIONING
CHECKLIST AND LEAVE THESE
INSTRUCTIONS WITH APPLIANCE
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