34
DESCTIPTION OF COMPONENTS
GB
GB
GB
GB
8. LOGIC OF OPERATION
NOTE:
• Following a MIRAI-SMI shutdown due to the opening of the "Remote
On/Off" outer contact or a power outage, the operating status previously
stored in SMART-MT will be reset at the next start-up
• Compressor start-up consent is obtained only if the water circulator
(Pump 1) is active therefore, in the event of water production request
for heating or cooling of rooms not controlled by CRONO-TH (accessory
provided separately), the relative room thermostat must be connected
to "Pump 1" contact (clamps L - K of PCB TERMINAL BLOCK) to activate
Pump 1
Heat pump (HP) ON/OFF TIMER:
Once the heat pump has been switched on, its start-up and switch-off can
be automatically set, through the On/Off timer available in the SMART-TH.
This function is enabled by setting the
100=On
parameter inside the
HP
label menu
It is possible to associate four different profiles of On/Off timer to each
weekday, in particular:
- Profile 1: Four time bands, two On and two Off
- Profile 2: Two time bands, one On and one Off
- Profile 3: Single time band always On
- Profile 4: Single time band always Off
Setting of the time bands of profiles
1
and
2
happens inside the
P1
and
P2
label menus.
The association of the various profiles to each weekday happens inside
the
dAYS
label menu.
NOTE:
If the On/Off timer is active and the
set
key is pressed for a long time, the
heat pump on SMART-MT or CRONO-TH switches off, in both On and Off
time bands. By then pressing the
set
key for a long time again, the On/Off
timer is reactivated. Therefore, in the On time band the HP switches on and
in the Off band it remains off until change over to On band.
8.1 Heat pump on/off state:
Contatto esterno “Remote On/Off”
OPEN CIRCUIT (morsetti 7-8 della PCB TERMINAL BLOCK)
Instead of "OFF", displayed is the time or temperature of the delivery
water. It is possible to switch the HP on/off by keeping the set key
pressed
set
With CRONO-TH installed, it is also possible to switch the HP on/off
by keeping the down key pressed
giù
Activation of the ON/OFF control of the HP present on the SMART-MT and on
the CRONO-TH, is subject to closing of the “Remote On/Off” external contact
(clamps 7-8 of the PCB TERMINAL BLOCK).
Feeding electronically heat pump, the display of the SMART-MT, ap-
pears the word "OFF", and the heat pump can not yet be on.
In this state, only the "Anti-freeze" function is active
External contact “Remote On/Off”
OPEN CIRCUIT (clamps 7-8 of PCB TERMINAL BLOCK)
Summary of Contents for Mirai SMI EH0614DC
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