System - Benchmark ZWB 7-29 CC1 Installation And Servicing

1.2

system

221.1
221.2
27
226
20
29
271
43
9
63
358
64
7
295
417
Fig. 2
4 Heatronic control
6 Heat exchanger safety temperature limiter
7 Testing point for gas supply pressure
8.1 Pressure gauge
9 Flue gas temperature limiter
15 Relief valve
18 Pump
18.1 Pump speed selector switch
20 Expansion vessel
27 Automatic air vent
29 Air gas Mixer unit
32.1 Electrode assembly
36 Temperature sensor in CH flow
43 CH flow
63 Adjustable gas flow restrictor
64 Adjusting screw for min. gas flow volume
102 Inspection window
120 Fixing points
221.1 Flue duct
221.2 Combustion air intake
226 Fan assembly
295 Appliance type sticker
234 Testing point for combustion products
7 181 465 346 GB (03.02)
120
349
234.1
234
102
32.1
36
6
415
416
18
423
18.1
418
15
8.1
4
6 720 610 596-01.2O
234.1 Testing point for combustion air
271 Flue duct
349 Cover plate for twin flue duct connection
358 Condensate trap
415 Cover plate for cleaning access
416 Condensate collector
417 Clip for fixing outer case
418 Data plate
423 Siphon
Layout of Appliance
5