Innova 3in1 5M Installer Manual page 39

3�5 Auxiliary heater management (resistor or back-up boiler)
The function, displayed by the icon
interface and by the flashing of the LED
cy interface , includes:
• automatic intervention in the event of malfunctioning of
the outdoor condensing unit in winter and domestic hot
water mode
• includes three different algorithms for activating the K1
relay which controls the auxiliary heater (in the units with
backup resistor only)
• the backup boiler contact, which are identical for the hot
water and heating functions, and which operate inde-
pendently from one another:
if the water detected by the adjustment input sensor (T1 in
heating mode or T3 in hot water mode) drops and re-mains
under a value equal to double the set hysteresis for longer
than 20 minutes*, the controller activates relay K1 in integra-
tion, switching* or exclusion entirely* (with CAL function) the
head pump.if the water detected by the adjustment input
sensor (T1 in heating mode or T3 in hot water mode) drops
and re-mains under a value equal to double the set hystere-
sis for longer than 20 minutes*, the controller activates relay
K1 in integration, switching* or exclusion entirely* (with CAL
function) the head pump.
T.acqua
Setpoint
Set - _hY
Set -2·_hY
T>hto
PDC
Risc .
ausiliario
PDC
Risc .
ausiliario
if a setpoint is set higher than 55°C* the controller turns the
heat pump off and activates the K1 relay When this function
is active, the heat pump and the auxiliary heater will never
operate at the same time.
on the touchscreen
on the emergen-
T<hto T>hto
Tempo
hiS-_hY hiS Set-_hY
if the external temperature measured by the T4 sensor goes
below -15°C*, the controller activates the K1 relay in switch-
ing with the heat pump.
This adjustment can be changed by the Technical Service
Centre.
A
hoS for sanitary / hor for heating
T.aria est.
A + ihY
A
Risc.
ausiliario
PDC
Master switch Q2 is provided in units provided with back-up
resistor to enable the components and protect them elec-
tri-cally. The installer may connect the three stages (2, 4 or
6kW) according to needs and the electric power available to
users.
PUTTING IT INTO SERVICE
Risc.
ausiliario
PDC
Setpoint
T.acqua
Tempo
39