81
- P193 visible If P29 = Yes
Recovery input (10/11 on J6) will be used by the customer to define the operating mode:
STANDARD or RECOVERY
Two operating modes are possible if parameter P29 = Yes:
Contact J6 - 10/11 on motherboard
open
without recovery:
- Standard fans controlled based on the values of P10, P20 and P21
B) Contact J6 - 10/11 motherboard
closed
with recovery:
- The turning-on of the fans is shifted using parameter P193
→ The HP control setpoint then becomes equal to P181 + P193
- The control logic will then be identical to standard control using the values of P10, P20 and P21.
17.6 Management of the air
b
lades if P10 = Centrifugal
This "all season" option will be offered for air-to-water units with centrifugal fans.
- If P20 = Yes:
Heating mode:
The centrifugal fan starts up 3 seconds after the compressor, regardless of the HP1 and HP2 values.
The fan is turned off during defrosting
.
The air blades are controlled by the 0-10 V output (terminals 1-2 on terminal block J2 on motherboard) as shown below:
One-circuit unit (or fault on one circuit of a two-circuit unit):
Adjust as shown in diagram 1.
Two-circuit unit and if the compressor on circuit 2 running for at least 5 seconds:
- If HP1 or HP2 < A
→ Control shown in diagram 1 and taking into account the sensor with the lowest pressure.
- If A < (HP1 and HP2) < C
→ Control shown in diagram 1 and taking into account the sensor with the lowest pressure.
- If HP1 or HP2 > C
→ Control shown in diagram 2 and comparison of:
. Voltage U1 = Diagram 1 (lowest HP)
. Voltage U2= Diagram 2 (highest HP)
And voltage U adjusted to highest value of U1 and U2.
- If HP1 and HP2 > C
→ Control shown in diagram 1 and taking into account the sensor with the highest pressure.
- P20 = No:
Output = 0 V
P 1 9 3
H P S T P S H I F T
D U R I N G R E C O V E R Y
Diagram 1
Diagram 2
Value A
Value B
Value C
Value D
R22/R407C
12b
16b
19b
23b
R134a
7.5b
10.5b
12.5b
15.5b
R404a
14b
18b
20b
23b
R410a
20b
25b
30b
37b
Time
State of
compressors
Time
Time
Time
Bar
Condensing pressure
Diagram 1
Diagram 2
Voltage on actuator
terminals with
compressor off
Compressor start-
up order
Fans on if HP1 or
HP2 < A
Prepositioning
Содержание Magister 2 Series
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