75
Aermec code 6755530_03 9.2011
ANK 025-085H
CONTROL AND SAFETY DEVICES
CHECK
:
- The manual reset high pressure switch.
That stops the compressor, generating the respec-
tive alarm, when the flow pressure exceeds the set-
point value. Its correct operation can be controlled
by closing the air intake to the exchanger (in cooling
mode) and keeping the high pressure manometer
under control, check the intervention in correspond-
ence of the calibration value. Attention: if there is
no intervention at the calibration value, stop the
compressor immediately and check the cause.
Reset is manual and can only take place when the
pressure drops below the differential value. (For
the set and differential values, consult the technical
manual).
- The anti-freeze control
The anti-freeze control managed by electronic
regulation and by the temperature probe located
at the evaporator outlet is to prevent the formation
of ice when the water flow rate is too low. Correct
operation can be checked by progressively increas-
ingly the anti-freeze set-point until it exceeds the
outlet water temperature and keeping the water
temperature controlled with a high precision ther-
mometer. Verify that the unit is off and generates
the respective alarm After this operation, take the
anti-freeze set-point back to its original value.
26.4. SEASON CHANGEOVER
26.5. SEASON CHANGEOVER ON MACHINE
Access the
SET USER
list using the key and conform
the password 000 using the same key.
Use the arrow keys to display the
STA
parameter 0
index of the menu, select it using the key and set it
using the arrow keys on the desired value,
VALUE 0
operating in cooling mode
VALUE 1
operating in heat-
ing mode.
Confirm the selection using the
key and exit the
menu using the key.
26.6. SEASON CHANGEOVER FROM PR3
ACCESSORY
If in possession of the PR3, it must be enabled after
electric connection.
26.6.1. ENABLING OF REMOTE PANEL
Access the
INSTALLER SET
list using the .key, enter the
password for access to the menu:
installer password 030.
Use the arrow keys to display the
PAN
parameter
index 9 of the menu, select it using the..key, set it using
the arrow keys on the desired value:
VALUE 1
:
• SEASON
CHANGE
piloted by the appliance.
• ON/OFF
CONTROL
from PR3
VALUE 2
:
• SEASON
CHANGE
piloted from PR3
• ON/OFF
CONTROL
from the appliance
VALUE 3
:
• SEASON
CHANGE
piloted from PR3
• ON/OFF
CONTROL
piloted from PR3
Confirm the selection using the
key and exit the
menu using the key.
Once the PR3 remote panel is enabled, just operate
directly on the switch to change the season
(fig.1)
. The
machine will switch off automatically and switch back
on with the operating mode selected.
For further information refer to the USER MANUAL
ATTENTION
Commissioning must be performed
with standard settings. Only when
the inspection has been completed
can the operating Set-Point values
be changed.
Before start-up, power the unit
for at least 12 hours, positioning
the magnet circuit breaker switch
and the door lock isolating switch
at ON
(fig.1)
