Sime VERA HE 25, User, Installation And Servicing Instructions

Page: 71 / 84

71
EN
Type No. Description Range U/M Step Default
CONFIGURATION
tS 2.0 Maximum power domestic hot water 0 .. 100 % 1 100
tS 2.1
Minimum power heating/domestic hot water
(premixed)
0 .. 100 % 1 0
tS 2.2 Domestic hot water preheating enabling
0 = OFF
1 = ON
- 1 0
tS 2.5 Auxiliary TA function
0 = according to TA
1 = TA Antifreeze
2= domestic hot water disabled
- 1 0
tS 2.6 Zone Valve / Pump Relaunch Delay 0 .. 99 Min 1 1
tS 2.9
Anti-legionella Function (Only hot water tank)
-- = Disabled
50 .. 80 - 1 --
tS 3.0 Maximum domestic hot water temperature 35 .. 67 °C 1 60
tS 3.5 Digital / analogue Pressure switch
0 = water pressure switch
1 = water pressure transducer
2 = water pressure transducer (only pressure
displayed)
- 1 1
tS 3.9 Modulating pump minimum speed 20 .. 100 % 1 30
tS 4.0 Modulating Pump Speed
-- = No modulation
AU = Automatic 30 .. 100
% 10 --
tS 4.1 ∆T Modulating pump delivery/Return 10 .. 40 % 1 20
tS 4.7 System pump forcing (only in winter mode)
0 = Disabled
1 = Enabled
- 1 0
RESET
tS 4.8 INST Parameter set to default 0 .. 1 - 1 0
In the event of a fault/malfunction the message
"AL"
will
appear on the display alternating with the alarm number eg.
"AL 04"
(Domestic Hot Water Sensor Fault).
Before repairing the fault:
– disconnect the appliance from the mains power by setting
the main switch to "OFF"
OFF
Fig. 40
– as a precautionary measure, close the gas isolation valve.
Repair the fault and start-up the boiler again.
NOTE: after having repaired the fault, when the alarm number
appears on the display together with the message RESET (see
figure), press the button o ( R ) for approximately 3 seconds
to start the appliance up again.