APPLIANCE INFORMATION
6 720 803 800 (2012/11) 7
BOILER FEATURES
• High pressure die-cast aluminium heat exchanger
•Low NOx emissions
• Fixed gas valve settings
• Direct burner ignition
• Zero pressure governor gas valve with fully modulating fan
• Display for boiler status and access to diagnostics, system and
commissioning parameters
• Digital control system
• Memory retention after power interruption
• Low electrical power consumption during operation and stand-by
modes
• Modulating pump
• Condensing in CH and DHW modes
• Three star Hot Water Comfort measured to EN13203 Part 1 in
comfort mode with DHW pre-heat ON
• Eco mode, to use gas on demand
• Plate type DHW heat exchanger
• Ability to pre-plumb condensate drain, CH flow, DHW Outlet, Gas,
DCW In, PRV and CH Return connections
• Syphonic condensate trap
• Galvanised steel wall mounting frame
• Standard wall frame provides vertical pipe route behind the boiler
• Compatible with all Worcester standard and intelligent controls
• Condensfit II flue systems 60/100 and 80/125 mm allows plume
re-direction as standard and ability to attach plume management kits
1 Wall mounting frame 29 Flow temperature sensor (NTC)
2 Expansion vessel 30 Electrode assembly
3 CH return isolating valve 31 Maximum safety sensor (NTC)
4 DCW mains isolating valve 32 Auto air vent
5 Gas isolating valve 33 Aluminium Silicon Heat exchanger
6 DHW outlet connection 34 Flueway
7 CH flow isolating valve 35 Sump assembly
8 Condensate drain connection 36 Pressure gauge connection point
9 Flue connector 37 Diverter valve actuator (stepper motor)
10 Flue overheat thermostat 38 Diverter valve body
11 Main superstructure 39 Modulating pump
12 Case 40 Drain point
13 Case retaining screws 41 CH return connection to isolating valve
14 Bottom panel 42 PRV
15 Case retaining clips 43 DCW in connection to isolating valve
16 Control panel 44 PRV Connection pipe
17 Control panel menu buttons 45 Gas pipe from isolating valve
18 Blank for optional programmer 46 DHW outlet pipe
19 Diagnostic port - Worcester service engineer 47 DHW temperature sensor (NTC)
20 Pressure gauge 48 CH flow pipe to isolating valve
21 DHW temperature control 49 Condensate siphon drain pipe
22 Boiler identification label 50 Condensate siphon
23 Operation/fault indicator (blue) 51 DHW Plate heat exchanger
24 Control panel flap 52 Expansion vessel connection
25 Boiler fascia guide location 53 Return temperature (NTC)
26 CH temperature control 54 Gas valve
27 Boiler display 55 Combustion air inlet
28 Fan 56 Ignition transformer
Table 4 Boiler components
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