Menu 1 - System Parameters; Menu 2 - Boiler Parameters - Worcester 27i System Compact Installation, Commissioning And Servicing Instructions

FAULT FINDING AND DIAGNOSIS

7.4.3 MENU 1 - SYSTEM PARAMETERS

Initially Menu 1 will be displayed, but will contain no options.
Menu 1 options will appear on the display when the Intelligent Solar
Module ISM1 is installed on the Greenstar i System Compact range only.

7.4.4 MENU 2 - BOILER PARAMETERS

1. Select Menu 2 via the and
2. Press and hold the button for one second to enter Menu 2.
ok
This menu lists the boiler parameters, which can be adjusted in this
menu.
To modify a setting, select the desired menu option (refer to table 17)
and press the button, the option will flash.
ok
Adjust the parameter using the
the button to confirm.
ok
A will display for three seconds to confirm the
update of the new value.
The same process is used for adjusting Menus 2, 3 and Test.
eco
°C
reset ok
°F
Menu 1
e
max
Menu 2
eco
°C
reset ok
°F
Menu 2
e
max
2.1A kW
Fig. 122 Menu 2 selection
*2.1b Maximum power for
DHW
2.1C Pump head selection
Table 17 Menu 2 parameters
60
scroll buttons.
and arrow buttons and press
2
1 1 3
0 4
bar
1.
min max
°C
°F
2
1 1 3
0 bar 4
2.
min max
°C
°F
6720646608-77.1Wo
The power for the DHW can be set
here up the maximum set in menu
3.1b
Select the right pump map (load and
modulation percentage) to suit the
property.
0 = Variable speed setting
(see 2.1d)
1 to 4 option pump maps.
2.1d Pump speed setting
2.1H Minimum pump speed
(pump speed at
minimum CH burner
load)
2.1J Maximum pump speed
(pump speed at
maximum burner
load)
2.1E Pump energy saving
mode
*2.2C Air purge mode
2.3B Anti fast cycle time for
CH
2.3C Anti fast cycle flow
temperature
hysteresis (negative
tolerance only)
2.5F Service reminder time Between 1 and 72 months can be set
2.7A Operation/fault
indicator (blue light)
activation
*2.9L Anti Legionella
program
*2.2J Alternating mode
ON/OFF
2.CE DHW circulating pump
number of starts/hour
2.CL DHW circulating
pump, ON/OFF
* Only available when the optional integral diverter valve kit is installed
Table 17 Menu 2 parameters
Greenstar i System Compact - 6 720 807 726 (2013/05)
This function is only available when
parameter 2.1C is set to 0.
1 = Min. and Max. speed can be
changed manually
2 - 7 = Constant speeds
8 - 10 =Predefined min. and max.
settings (speed depends on burner
load)
This parameter is only visible when
2.1C is set to 0 and 2.1d is set to 1.
Then the minimum pump speed can
be set.
This parameter is only visible when
2.1C is set to 0 and 2.1D is set to 1.
Then the maximum pump speed can
be set.
4 = ON
5 = OFF
This feature can be selected to purge
the system and boiler of air.
0 = off, 1 = auto
This sets the amount of time
between stop and starts of the main
heat exchanger. The default is 10
minutes, the range is 0 to 60
minutes.
This sets the temperature drop
before the burner re-starts, 6°K is
the default. This is used in
conjunction with the "Anti fast cycle
time"
The range is from 2 to 15°K in 1°K
steps.
0 = The blue light will only operate as
a flashing alert.
1 = The blue light will operate as a
boiler operation and an alert. This is
set to 1 by default.
This feature can be selected to force
a thermal disinfection.
0 = off, 1 = on
This feature allows the CH and DHW
load to be shared equally, under
normal boiler operation the DHW
takes priority.
0 = off, 1 = on
1 - 6 number of 3 minutes starts per
hour.
7 - Continuous running
This feature, when set to 1 enables
any additional pumps within the
system to run at the same time as the
main boiler pump.
0 = No circulation pump installed.
1 = DHW circulation pump installed
and controlled according to
parameter 2.CEon