49
Toshiba
8-3.
Hydro Unit
Control
1-2) High temperature release control
A heat pump operation is performed as shown in the table below according to the TC sensor detecting temperature.
• For the detected temperature, TC (= TWO + 2 degree) of a heat pump operation is used. The values of T7 through
T10 vary depending on TWI. (See the table below)
• If the compressor frequency instruction from the hydro unit is less then 10 Hz, the compressor stops.
• TC > 62°C causes the compressor to stop abnormally. When the compressor restarts 140 seconds after the stop
and TC > 62°C is not detected for 20 minutes, the abnormal stop counter is cleared. 10 times of compressor
abnormal stop stops the operation of heat pump, and confirms the abnormality (Display: A11).
* If the heat pump operation is switched to other operation, the abnormality detection counter is reset to 0.
TC=TWO+2deg
(°C)
1-3) Low temperature release control
A heat pump operation is performed as shown in the table below according to the TC sensor detecting temperature.
• For the detected temperature, TC = TWO of a heat pump operation is used. The values of T7 through T10 varies
depending on TWI. (See the table below)
• If the compressor frequency instruction from the hydro unit is less then 10 Hz, the compressor stops.
• TC < 3°C causes the compressor to stop abnormally. When the compressor restarts when 140 seconds has
passed after the stop and TC < 3°C is not detected for 20 minutes, the abnormal stop counter is cleared. 10 times
of compressor abnormal stop stops the operation of heat pump, and confirms the abnormality (Display: A11).
* If the heat pump operation is switched to other operation, the abnormality detection counter is reset to 0.
TC=TWO
(°C)
Item
Operation flow and applicable data, etc.
T11
(62.0°C)
TC (TWO+2)
Forcible stop
O (down)
P (slow down)
Q (keep)
R2 (slow up)
R1
(slow up)
S (normal)
T9
T10
T8
T7
Zone
Control operation
R1
Increase compressor frequency by 1.2 Hz every
60 secs.
R2
Increase compressor frequency by 0.6 Hz every
60 secs.
O
Decrease compressor frequency to 70% every
10 secs.
P
Decrease compressor frequency by 3 Hz every
10 secs.
Q
Keep compressor frequency.
TWI
T7
T8
T9
T10
T11
TWI<30
57.0
59.0
60.0
61.0
62.0
30
TWI<35
57.0
59.0
60.0
61.0
62.0
35
TWI<40
56.5
58.5
59.5
60.5
62.0
40
TWI<45
56.5
58.5
59.5
60.5
62.0
45
TWI<50
56.0
58.0
59.0
60.0
62.0
50
TWI
56.0
58.0
59.0
60.0
62.0
T7
Forcible stop
O (down)
P (slow down)
Q (keep)
R2 (slow up)
R1
(slow up)
S (normal)
T9
T8
T10
T11
TC (TWO)
Zone
Control operation
R1
Increase compressor frequency by 1.2 Hz every
60 secs.
R2
Increase compressor frequency by 0.6 Hz every
60 secs.
O
Decrease compressor frequency to 70% every
10 secs.
P
Decrease compressor frequency by 3 Hz every
10 secs.
Q
Keep compressor frequency.
TWI
T7
T8
T9
T10
T11
TWI<10
10.0
8.0
6.0
4.0
3.0
10
TWI<15
10.5
8.5
6.5
4.5
3.0
15
TWI<20
11.0
9.0
7.0
5.0
3.0
20
TWI
11.5
9.5
7.5
5.5
3.0
+00A09-002_01EN_SVM_ALL_Air_to_Water.book Page 49 Monday, October 5, 2009 2:09 PM
Summary of Contents for ESTIA HWS-1102H-E
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