Technical data

31
LANG
En
PROG
68.30
VERS
1.05
On Relay R2 On, auxiliary heat source pump running.
Indicator light flashes red/green
and flashes on display.
Off Relay R2 Off, auxiliary heat source pump running.
flashes on display - does not flash.
7.5.17 LANG Language Setting
Range - dE, En or It ~ Default En
dE set for German
En set for English
It set for Italian
7.5.18 PROG Programme Number
Display only
Displays the current programme number.
7.5.19 VERS Programme Version
Display only
Displays the current programme version.
7.5.20 AHO R2 Thermostat Switch On Temperatures
AHO Range 0 to 95°C ~ Default 40°C
AHO is only available when Arr 2 is set.
7.5.21 AHF R2 Thermostat Switch Off Temperatures
AHF Range 0 to 95°C ~ Default 40°C
AHF is only available when Arr 2 is set.
AHO and AHF
R2 can be used in two ways:-
Normal Systems To switch On an auxiliary heat souce to heat the cylinder
upper coil when solar is not available or at low
performance.
Set AHO lower than AHF.
The defaut settings of AHO 40° & AHF 45°C are for
‘normal’ systems.
Alternative To switch On a pump and/or motorised valve to enable
extra heat produced by solar to heat radiators connected
to the cylinder upper coil of the cylinder, see 7.1.
Set AHO greater than AHF.
When Arr 2 is selected extreme care must be taken to ensure the
auxiliary heat source only operates when it will not adversely affect
the cylinder temperature prior to and during the ‘solar day’.
IMPORTANT
AHO
40°C
AHF
45°C