Technical information

Contents
1.
Safety Considerations .........................6
2. Symbols...............................................6
2.1
Gas Safety....................................6
3. Electrical Supply..................................6
4. Terms of Warranty...............................7
5. Commissioning Certificate...................7
5.1
System water quality ....................7
6. Existing Installations............................7
6.1
Prior to Connection.......................7
6.2
Expansion Vessels .......................8
7. Introduction..........................................8
7.1
Variable Controlled Output ...........8
7.2
Emissions. ....................................8
7.3
PPS Plastic Flue System..............8
7.4
Approvals .....................................8
7.5
Additional Features ......................8
8. Description of Appliances ....................8
8.1
EC 25 H Compact ........................8
8.2
EC 25HS Compact .......................9
8.3
EC EC 25S Compact....................9
9. Technical Information. .......................10
10. Unpacking & Items Supplied .............13
10.1
Environment & Packaging ..........13
10.2
Appliance....................................13
10.3
Check the type plate...................14
11. Accessories .......................................14
12. Operation...........................................15
12.1
Variable Controlled Output .........15
12.2
Variable pump ............................15
13. Siting the Appliance...........................15
13.1
Timber Framed Dwellings ..........16
14. Hydraulic Connections......................16
14.1
First Fixing Pipe-work.................16
14.2
Connections ...............................16
14.3
Clearances .................................16
14.4
Checks Before Siting..................17
14.5
Fixing the boiler. .........................17
14.6
Removing The Casing................17
14.7
Mounting the support bracket.....18
14.8
Fitting the O-rings.......................19
14.9
Mounting of the appliance ..........19
14.10
Connections ...............................20
15. Flues and Ventilation......................... 20
15.1
Maximum Flue Lengths.............. 20
15.2
Available Flue Components .......22
15.3
Condensate in the Flue.............. 23
15.4
Flueing Options.......................... 23
15.5
Installing a Concentric Flue........ 23
15.6
Vertical flue Installations ............ 24
15.7
Terminal Positions .....................27
16. Gas Supply........................................ 28
16.1
Gas Supply ................................28
16.2
LPG Gas Supply ........................ 28
17. Air Supply.......................................... 28
17.1
Concentric Flue.......................... 28
17.2
Conventionally Flue ................... 28
17.3
Compartment Ventilation ........... 29
18. Hydraulic Requirements.................... 30
18.1
Expansion Vessel ......................30
18.2
Condensate Drain ...................... 31
18.3
System By-Pass......................... 31
19. Electrical Connections....................... 31
20. Heating Control Options.................... 32
20.1
Connecting Room Thermostat ... 32
20.2
External temperature sensor...... 32
20.3
Cylinder Thermostat................... 33
20.4
Terminal block............................ 33
20.5
Laptop Serial Connection........... 33
21. Commissioning and Testing.............. 33
21.1
Electrical Checks .......................33
21.2
Gas Supply ................................33
21.3
Connection to Pipe-work............ 33
21.4
Water Treatment ........................ 33
21.5
Flushing System Pipe-work ....... 33
21.6
Filling and Venting the System ..34
22. Combustion Ratio.............................. 34
23. Output test function ........................... 34
23.1
Commissioning NG and LPG..... 34
23.2
Flue System Check.................... 36
24. Control Setup .................................... 36
24.1
External temperature control...... 36
24.2
Switching on the appliance ........ 36
24.3
Setting the Output ...................... 36
24.4
Pump operation.......................... 36
24.5
8.1.5 Frost protection ................. 37
24.6
Weather compensation .............. 37
24.7
Setting the Heat Slopes ............. 37
25. Hot water production ......................... 38
EC 25 Compact Installation/User Manual page
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