10
Initial start−up, inspection and maintenance
Further details regarding the individual steps
(cont.)
Checking static and supply pressure
¨
Safety instructions
Measure the CO value before and after any work on gas appliances, to
prevent any health hazards and to ensure the perfect operational condition of
the system.
Static pressure
1.
Close the gas shut−off valve.
2.
Release upper screw
A
of the
retaining plate on burner control
unit
B
(do not fully unscrew) and
twist burner control unit
B
aside
clockwise.
3.
Release the screw inside test
nipple"PE"
C
on the gas
combination valve, but do not
remove, and connect the pressure
gauge.
4.
Open the gas shut−off valve.
5.
Check the static pressure; it should
be between 20 and 50mbar.
Record the actual values in the
service report from page46.
6.
Start up the boiler.
Please note:
Switch the burner to max. output
(see
page26)
.
5692500GB
A
B
PE
D
C
Summary of Contents for CU3
Page 38: ...38 Burner Component summary 5692 500 GB M A B C D E L K H G F M H F N G O K ...
Page 42: ...42 Parts list Parts list cont 5692 500 GB 201 205 213 1 212 1 202 208 209 210 A B C ...
Page 43: ...43 Parts list Parts list cont 5692 500 GB 206 203 209 204 211 211 211 211 211 211 201 200 ...
Page 45: ...45 Parts list Parts list cont 5692 500 GB 003 003 008 009 005 008 001 002 007 004 006 ...
Page 47: ...47 Appendix Maint service Maint service Maint service Maint service 5692 500 GB ...
Page 49: ...49 Appendix Maint service Maint service Maint service Maint service 5692 500 GB ...
Page 51: ...51 Appendix Maint service Maint service Maint service Maint service 5692 500 GB ...
