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installation and servicing instrUctions
Installer Checklist
Please remember to carry out the following checks after installation. This will achieve complete customer
satisfaction, and avoid unnecessary service calls. A charge will be made for a service visit where the fault is not
due to a manufacturing defect.
Has a correct by-pass been fitted and adjusted?
Has the system and boiler been flushed?
Is the system and boiler full of water, and the correct pressure showing on the pressure gauge?
Is the Auto Air Vent open?
Has the pump been rotated manually?
Is the gas supply working pressure correct?
Is the boiler wired correctly? (See installation manual).
Has the D.H.W. flow rate been set to the customer requirements?
Has the customer been fully advised on the correct use of the boiler, system and controls?
Has the Benchmark Checklist in the use and maintenance section of this manual, been completed?
table of contents
6 insTallaTion
20
6.1 Receiving the product . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
6.2 Dimensions and weight. . . . . . . . . . . . . . . . . . . . . . . . . . 20
6.3 Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
6.4 Ventilation requirements . . . . . . . . . . . . . . . . . . . . . . . . 20
6.5 New installation or installation of a replacement
appliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
6.6 Cleaning the system . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
6.7 Characteristics of feedwater and system treatment . . 21
6.8 Boiler installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
6.9 Plumbing connections. . . . . . . . . . . . . . . . . . . . . . . . . . . 22
6.10 Gas supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
6.11 Connecting the flue . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
6.11.1 Flue Terminal Positions . . . . . . . . . . . . . . . . 23
6.11.2 Installation of coaxial flues 60/100mm –
80/125mm . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
6.12 electrical connections and external controls . . . . . . . . 25
6.12.1 External sensor. . . . . . . . . . . . . . . . . . . . . . . 26
6.12.2 External timers and Room Thermostats. . . 26
6.12.3 EXAMPLE of use of the command/control
device on some types of heating systems. . 26
6.13 Refilling or emptying. . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
6.14 Method of filling a sealed system. . . . . . . . . . . . . . . . . . 27
6.14.1 SYSTEM Filling . . . . . . . . . . . . . . . . . . . . . . . 27
6.14.2 EMPTYING operations . . . . . . . . . . . . . . . . . 28
7 coMMissioninG
29
7.1 Preliminary operations . . . . . . . . . . . . . . . . . . . . . . . . . . 29
7.2 Before commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . 29
7.3 Parameter setting and display . . . . . . . . . . . . . . . . . . . . 29
7.4 list of parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
7.5 Fault / malfunction codes . . . . . . . . . . . . . . . . . . . . . . . . 31
7.6 Display of operating data and counters. . . . . . . . . . . . . 31
7.7 Checks and adjustments . . . . . . . . . . . . . . . . . . . . . . . . 32
7.7.1 Chimney sweep function . . . . . . . . . . . . . . . 32
7.7.2 Adjusting gas pressure at the nozzles. . . . . 33
7.8 Heating power output adjustment . . . . . . . . . . . . . . . . . 33
7.9 automatic calibration procedure . . . . . . . . . . . . . . . . . . 34
8 MainTenance
36
8.1 servicing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
8.2 external cleaning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
8.2.1 Cleaning the case . . . . . . . . . . . . . . . . . . . . . 36
8.3 Burner inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
8.3.1 Cleaning the heat exchanger . . . . . . . . . . . . 36
8.3.2 Cleaning the burner . . . . . . . . . . . . . . . . . . . 37
8.3.3 Checking the ignition/detection electrode . 37
8.3.4 Final operations . . . . . . . . . . . . . . . . . . . . . . 37
8.4 Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
8.4.1 Checking the flue . . . . . . . . . . . . . . . . . . . . . 37
8.4.2 Checking the expansion vessel pressure . . 37
8.4.3 System Inhibitor concentration . . . . . . . . . . 37
8.5 Burner pressure test. . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
8.6 Circuit Board Replacement . . . . . . . . . . . . . . . . . . . . . . 38
8.7 Possible faults and solutions . . . . . . . . . . . . . . . . . . . . . 38
9 exPloded views
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