Bosch Thermotechnik 8 719 002 460 0 Instrucciones De Instalación página 28

Gas Type Conversion
Operating Gas Pressure Test
B Press ON/OFF button to turn off the appliance.
B Press and hold "Program" (P) button and press ON/
OFF button to turn appliance ON.
Fig. 4 Gas adjusting mode
B As soon as '188' is displayed, release "Program"
button and the display should read "P2".
B Press or until P1 appears.
+
NOTA: While in this mode the appliance will
run constantly at maximum power and allow
maximum water flow.
For inlet gas pressure minimum specification, use the
following table:
Gas type Natural
kPa
Table 2 Minimum inlet gas pressure under full operation
B Turn on a high volume of hot water flow (at least 15l/
min) and heater will ignite. If heater display reverts to
P2, open more hot water fixtures to allow sufficient
flow 15l/min. Press
display.
B Operate all other gas appliances on same gas piping
system at maximum output.
B Record lowest operating gas pressure reading in
table 4.
Gas pressures lower than 2 kPa for Natural Gas or 3
kPa for LPG will result in insufficient degree rise to
the hot water, reduced hot water volume, possible
error codes and must be corrected.
Check the dimensions of the gas pipes.
P1 fan speed (Factory default):
Model
WTD 27
Table 3 Fan speed values for P1 (factory default)
28
6720608915-03. 1 AL
Butane
2 3
until P1 reappears on
+
GN Butane
45 39
Lowering P1 fan speed reduces the maximum BTU input
(165.295 BTU/h).
As a temporary measure if the gas pressure in P1 is
below specification, lower P1 fan speed incrementally
until minimum inlet gas pressure reaches specified
range table 2. After raising gas pressure, reset appliance
to P1 factory default setting.
Fig. 5 Gas pressure test port (left tapping)
Static Gas Pressure Reading
enter here: _________________ Date: ____________________
Operating Gas Pressure Reading
enter here: ___________________ Data: ___________
Table 4
6720608915-04.1AL
6 720 608 915 (2012/03)