Worcester ZWBR 7-30 R 30 HE PLUS COMBI Service Booklet page 11

2.5 Max. flow temperature
The maximum CH flow temperature can be set to
between 35˚C and 88˚C (factory setting). Even if the
CH flow temperature control is set higher, the setting
entered for 2.5 Max. flow temperatureis not
exceeded.
2.6 Switch diff. flow NTC
The switching difference is the permissible differential
from the specified CH flow temperature. It can be set in
increments of 1 K. The adjustment range is 1 to 30 K (is
factory set to 0 K). The minimum CH flow temperature
is 45˚C.
Note: 1K = ^ 1 ˚C.
i
B Disable anti-cycle time (setting 0. of service
function 2.4).
B The switching difference setting should be entered
on the commissioning record supplied with the appli-
ance.
2.7 Autom. anti-cycle mode
With the textdisplay connected to the appliance, the
anti-cycle time is adjusted automatically. With service
funktion 2.7 automatic adjustment of the anti-cycle time
can be disabled. This may be necessary in the case of
unfavourably dimensioned heating systems.
If automatic adjustment of the anti-cycle time is disa-
bled, the length of the anti-cycle time must be set under
service function 2.4 Anti-cycle mode.
B If automatic adjustment of the anti-cycle time has
been disabled, this should be entered on the com-
missioning record enclosed with the appliance.
2.9 Actual output
The actual output of the appliance at the time viewed is
displayed.
3.0 Fan speed
The current fan speed is displayed in Hertz (Hz).
3.3 Ionisation current
The burner flame is monitored by measuring the ionisa-
tion current generated during combustion. If no ionisa-
tion current is detected, the gas valve shuts off. This
ensures that unburned gas does not escape.
3.4 Pump mode (system boiler only)
(not applicable)
3.5 Pump blocking time
(not applicable)
3.6 Software version
The version number of the software is displayed.
7 181 465 347 (05.01)
Supplied By www.heating spares.co Tel. 0161 620 6677
3.9 Link 8-9 /
3.9 Link Ls-Lr
When supplied, the appliance has a link fitted across
terminals 8-9 (= Heat demand). If that connection is
opened (e.g. by a limiter for an underfloor heating sys-
tem), heating mode is disabled.
When supplied, the appliance has a link fitted across
terminals Ls-Lr (= Heat demand). If that connection is
opened (e. g. by an external 2-point programmer), heat-
ing mode is disabled.
4.0 Stor. tank therm. (7-9) (system)
When supplied, the appliance has no link across termi-
nals 7- 9 (= Disabled). If that connection is closed (e. g.
by a DHW cylinder thermostat) DHW cylinder charging
is enabled.
4.1 Room therm. LSM/LSM release
(not applicable)
4.2 Timer ch. 1 (heating) /
4.2 Timer ch. 2 (hot water)
Shows the status of channel 1 of the timer integrated in
the text display.
If that channel's status is "Heat demand", heating mode
will be activated according to the programmer com-
mands.
Shows the status of channel 2 of the timer integrated in
the text display.
If that channel's status is "Heat demand", hot water
mode will be activated according to the programmer
commands.
4.4 Heat demand (heating) /
4.4 Heat demand (stor. tank) (system only)
Heat demand (heating) shows the heat demand status
for the central heating system.
If this channel's status is "Heat demand", heating mode
will be activated according to the programmer com-
mands.
Heat demand shows the heat demand status for charg-
ing the DHW cylinder.
If this channel's status is "Heat demand", the DHW cyl-
inder will be charged according to the commands from
the DHW cylinder thermostat or NTC sensor.
4.5 Heat demand (hot water) /
4.5 DHW pre-heat activated (combi only)
Heat demand (hot water) shows the heat demand sta-
tus for the hot water function.
If this channel's status is "Heat demand", the hot water
function operates according to the commands from the
hot water NTC sensor.
Keep hot period shows the constant hot water circuit
status of the heat exchanger (ECO or Comfort mode).
If this channel's status is "Heat demand", Comfort
mode is active. If the status is "Disabled", ECO mode
with demand detection is active.
Boiler service functions
11