Table of Contents
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Sections
6.11 Checking the heating thermostat
6.12 Testing/regulating the D.H.W flow
6.13 Keep hot
6.14 C.H. high/low temperature
domestic hot water
6.16 Test mode
6.17 Instructing the user
7
7.1
Boiler frost protection
7.2
8
Replacements of parts
8.1
General
8.2
To remove front panel
8.3
8.4
To remove/replace spark igniter box
8.5
To remove/replace fan
8.6
8.7
To remove/replace the burner
8.8
To remove/replace the heat
exchanger
8.9
To remove/replace expansion
vessel
8.10 To remove/replace gas valve
exchanger
8.12 To remove/replace the water
pressure transducer
8.13 To remove/replace diverter valve
motor
8.14 To remove/replace C.H. diverter
valve
8.15 To remove/replace D.H.W. diverter
valve mechanism
8.16 To remove/replace pump
8.19 To remove/replace D.H.W. sensor
8.20 To remove/replace C.H. flow and
return sensors
8.21 To remove/replace flue sensor
8.22 To clean and remove/replace
condensing trap
8.23 To remove panel control box
8.25 To remove/replace control board
8.26 To remove/replace digital display
board
8.27 External control connection
9
9.1
10
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Sections
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11
42
42
12
42
checklist details
43
12.1 Analyser check list
43
43
44
44
45
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45
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5
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