Airwell PAC BT Series, Installation And Operating Manual

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32
7 - START-UP
If necessary is possible to limit the capacity absorbed by the
unit to a prefixed value.
Configuration :
parameter description Extended decription
26 ENPowerLimit 0=disabled,1=enabled
177 LimitePW set the maximum capacity in kW
6.12 - ABSORBED CAPACITY LIMITATION
If the
solar circuit
is present, enable the function as the menu.
The solar activates when the Solar temperature > 8 °C than
the temperature in the accumulation, and remains active until
80 °C.
Configuration:
par.
420 EnSolare
: = 0 not enable
= 1 enabled on DHW
6.14 - SOLAR SETUP - OPTION
6.13 - SCREED HEATING
Only with radiant panels
Procedure to follow in the event of winter mode start-up in
cold environments and screed to be heated or a new non-dry
screed.
1. Close the heads
2. Leave only one area active
3. Start the unit with the ACS enabled
4. Wait for the area to reach the temperature
5. Repeat steps 2 and 3 for each area
Starting all the areas simultaneously can block the unit.
Do not start the system during the winter in rooms without
fittings.
DHW recirculation, if foreseen in the system, is carried out by
making the sanitary water circulate through the unit pump.
The pump alternates ON and OFF cycles with duration that
may be set by parameters (password protected):
par.
441 Recirculation Time OFF
par.
440 Recirculation Time ON.
The recirculation function is active only at the times foreseen
by the DHW scheduler:

Maintrecirculation

recirculation
The parameters are the same that manage the anti-
stratification recirculation in the DHW accumulation.
The recirculation still causes some inefficiencies (thermal
dispersions in system piping etc.) therefore duration and
frequency will have to be optimised for the system.
6.11 - RECIRCULATION DHW CALIBRATION
HP *
↳
Settings
↳
Parameter
↳
DHW
HP *
↳
Settings
↳
Parameter
↳
DHW
par. 420
HP
*
↳
Settings
↳
Parameter
↳
Configuration
Demand limit
The anti-Legionnaire's disease cycle disinfects the DHW
thermally.
The unit is delivered with a set point of 65°C (par. 436,
password protected).
The scheduling allows to set :

Cadence:
Disabled
Weekly
Monthly
Annual

Day

Start hour
We recommend a weekly or monthly schedule.
Anti-legionnella scheduling
Programming *
↳
Anti-
legionella
↳
Cadence
Day
Start hour
*
6.15 - HEATING ELEMENT FUNCTION -
OPTIONAL
The heating elements are use:

To supplement the compressor, when the compressor is in
alarm, the heating elements are also used with outdoor
temperatures greater than the setpoint.

In substitution, only when the compressor operating limit
has been reached or when the compressor is in alarm,
even with outdoor temperatures greater than the setpoint.
See the separately supplied accessory
The unit parameters are overwritten by RCW15 keyboard. Make the customization by using RCW15.