Gas Connection; Inlet/Exhaust Pipe Installation; Startup; Adjustments - Bosch WR 11 B Installation Manual And Operating Instructions

Connect the water pipes to the water valve using the
provided connection accessories.
Fig. 12 Water connection
It is advisable to install a non-return valve on the
supply side of the heater to avoid problems
caused by sudden changes in supply pressure.
5.5

Gas connection

DANGER:
If local regulations are no
or explosion may result causing property
damage, personal injury or loss of life.
Only use accessories recommended in this
manual.
Gas pressure regulator
This appliance requires an operating pressure of 2,8 kPa at the
appliance. A suitable LPG regu
requirements of SANS 1237 must be installed.
Any local by-laws and regulations pertaining to installation and
use of gas-heated appliances must be observed.
Please refer to the laws that should be attended in your
country.
Adjustments (must be carried out only by quali ed technicians) | 13
t follow exactly, a re
lator that complies with the
5.6

Inlet/exhaust pipe installation

Pipes should be installed according to the instructions in the
relevant manual.
DANGER: Make sure that all ue connections
are tighten sealed.
Failure to follow this requirement may
cause dangerous exhaust gases to enter
living space which may result causing
personal injury or loss of life.
Once connected, the pipe should be inspected and the seal
guaranteed.
5.7

Startup

Open the water and gas ow valves and check that all
connections are leak-tight.
Check the ue gas safety devi ce is functioning correctly,
proceed as explained in "Section 7.3 Combustion gas
probe".
6 Adjustments (must be carried out only by

quali ed technicians)

6.1

Factory regulations

Sealed parts must not be interfered with.
Natural gas
Heaters designed for Natural gas
delivery after the values on the
checked.
Heaters should not be ignited when the
connections pressure is less than 1,7 kPa more
than 2,5 kPa.
Liquid gas
Propane/butane heaters (G31/G30) are factory sealed for
delivery after the values on the
checked.
Heaters should not be ignited when the
connections pressure is:
- Propane: less than 2,5 kPa more than 4,5 kPa.
- Butane: less than 2,0 mbar more than 3,5 kPa.
H (G 20) are factory sealed for
characteristics panel have been
characteristics panel have been
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