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B1HF
Installation and service instructions manual
Electrical Connections; Opening The Wiring Chamber - Viessmann B1HF Installation And Service Instructions Manual
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Gas connection
(cont.)
Taking into account a pressure drop from the installa-
tion lines of no more than 1 MB, it can be assumed
that a permissible minimum pressure of 18 MB is
present at the appliance's gas connection (reference
BS 6400-1 Section 6.2, Pressure absorption).
Electrical connections
Opening the wiring chamber
3.
1.
Fig. 13
The external gas tap may reduce operating pressure
further if measured at its test point. The pressure drop
is relative to the heat input of the boiler (kW).
Observe minimum gas pressure at the gas fitting in
accordance with the table – see page 41
!
Please note
Electronic assemblies can be damaged by elec-
trostatic discharge.
Prior to commencing any work, touch earthed
objects, such as heating or water pipes to dis-
charge static loads.
2x
2.
Installation sequence
23
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Chapters
Index Index
6
Commissioning, Inspection, Maintenance Steps - Commissioning, Inspection and Maintenance
31
Table of Contents
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This manual is also suitable for:
Vitodens 100-w
B1kf
B1hf-m
B1kf-m
Zk06237
Zk06235
...
Show all
Zk06233
Zk06232
Zk06230
Zk06231
Zk06236
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