MAXA i-32V5C MIDI 0121, Руководство пользователя

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Controllo per i-32V5 MIDI
Air/water inverter chillers and heat pumps with axial fans
18
Parameter VALUE Function
L02
0 Function not active
1 Enable Hz minimum
L03
0 Function not active
1 Function active only in cooling mode
2 Function active only in heating mode
3 Function active only in sanitary mode
4 Function active in cooling and sanitary mode
5 Function active in heating and sanitary mode
6 Function in cooling and heating mode
7 Function always active
With the function active, the output and power of the unit are limited, for additional information see the installer user manual.
17. MINIMUM HZ FUNCTIONS
When the function is activated, the power of the unit is increased, for information contact the company.
18. AUXILIARY RESISTANCES
In some system solutions it may be necessary to use an integration heater for the system and/or for the sanitary area. This is an additional re-
source for heating in case the compressor cannot meet the set in a reasonable time. The resistor controller only operates in heating mode and
if
r10 = 1
.
To define how the integration resistors are to operate, parameter r24 must be se:
• r24 = 0 for integration resisitors not used;
•
r24 = 1
for use of system integration resisitor;
• r24 = 2 for use of sanitary integration resisitance;
• r24 = 3 for use of both the system integration resistor and the sanitary integration resistor.
18.1 SYSTEM RESISTANCE
The system resistance must be connected to the digital output DO3 and can be configured by setting parameter H81 = 22 .
If the regulation temperature remains lower than the hot water set-point Hea – r11 (°C) for a time equal to r12 the integration resistor is activat-
ed according to the operation of the machine in the combined or replacement bands.
The resistor is also activated if the control temperature remains below the water set-point Hea – r11 (°C) and the machine is in lockout due to
the intervention of an alarm. It switches off when the machine exits the alarm block.
Setting r21 = 1 , during the defrost cycle, if required (temperature lower than Hea - r11 ), the system resistor is activated without waiting for the
time defined by r12 .
The resistor switches off when the set-point is reached (also taking into account any offset set with parameters r29 or r30 ).
Parameter VALUE Function
H81
22 System integration resistance
r10
1 Enabling of system resistors
r11
5 (default) Delta resistances in system integration (in tenths of °C)
r12
10 (default) System integration activation delay (in minutes)
r21
1 Enabling resistors during defrosting
r24
1/3 Type of use resistors
18.2 SANITARY RESISTANCE
This function can be activated as an alternative to the system integration resistance. The DHW resistance must be connected to digital output
DO3 and can be configured by setting parameter H81 = 26 , in addition the DHW function must be active.
The resistance is activated if the production of domestic hot water lasts longer than
r16
(minutes) or if the machine goes into lockout due to
the intervention of an alarm. It switches off when the machine finishes DHW production (also taking into account any offset on the set-point set
with parameter
r31
).
Parameter VALUE Function
H81
26 DHW integration resistor
r15
1 Enabling of DHW resistors
r16
10 (default) Sanitary integration activation delay (in minutes)
r24
2/3 Type of use of resistance
18.3 INDIVIDUAL SYSTEM/HEALTH INTEGRATION RESISTENCE
Configuring the DHW resistance it is also possible to use it as a system resistor, by setting the parameter
r15 = 2
and
r24 = 3
.
In this way, in the event of a request for system integration, the resistance declared as DHW integration is activated, thus making it possible to
have a single integration resistance for the system, DHW and defrosting.