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DLY (DELUXE) SERIES HYDRONIC CASSETTE
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38
viii. OVER HEAT PROTECTION OF INDOOR COIL
1)
If Ti1 >= 75 ºC, MTV1 is turned off, indoor fan remains on and runs at set speed.
2)
If Ti1<70 ºC, MTV1 is turned on, indoor fan remains and runs at set speed.
3)
If indoor coil temperature sensor is damaged, the protection mode will become obsolete and the unit
will work as the Pre-heat and Post-heat set times.
4) DEHUMIDIFICATION
MODE
1)
MTV2 and heater always off.
2)
If Tr >= 25 ºC, MTV1 will be ON for 3 minutes, and OFF for 4 minutes.
3)
If 16 ºC < =Tr < 25 ºC, MTV1 will be ON for 3 minutes, and OFF for 6 minutes.
4)
If Tr <16 ºC, MTV1 will be turned off for 4 minutes.
At the end of the above dehumidification cycle, system will decide the next dehumidification control
option. Indoor fan will run at low speed throughout the dehumidification process.
6.
2 PIPE UNIT WITHOUT MOTORIZED VALVE
1) COOL
MODE
i. Heater, MTV1 and MTV2 always off.
ii. If Tr >= Ts+1 ºC, cool operation is activated. Indoor fan runs at set speed.
iii. If Tr = Ts, cool operation is terminated. Indoor fan is turned off.
iv. The range of Ts is16~30 ºC
v. Indoor fan speed can be adjusted for low, medium, high and auto.
2)
PROTECTION OF INDOOR COIL
i. If Ti1
̰
2 ºC for 2 minutes, if indoor fan runs at low speed, it will run at medium speed. If indoor fan
runs at medium or high speed, it will run at set speed.
ii. If Ti1
̱
5 ºC for 2 minutes. Indoor fan runs at set speed.
3)
HEAT MODE--- WITHOUT ELECTRICAL HEATER
i. Heater, MTV1 and MTV2 always off.
ii. If Tr <= Ts
ε
1 ºC, heat operation is activated. The indoor fan is turned on and runs at set speed.
iii. If Tr>Ts, heat operation is terminated. Indoor fan runs at low fan speed for 30 seconds, stops for 3
minutes and repeats.
iv. The range of Ts is16~30 ºC
v. Indoor fan speed can be adjusted for low, medium, high and auto.
4) PRE-HEAT
i. If Ti1<36 ºC [or 28C depends on S5 setting]. Indoor fan remains off.
ii. If Ti1>=38 ºC [or 30C depends on S5 setting], indoor fan runs at set speed.
iii. If indoor coil temperature sensor is damaged, pre-heat time is set for 2 minutes, and indoor fan runs
at set speed.
5) POST-HEAT
Indoor fan will turn off after the unit is turned off for 20 seconds.
6)
OVER HEAT PROTECTION OF INDOOR
i. If Ti1 >=75 ºC, while unit is on. Indoor fan remains on and runs at high speed.
ii. If Ti1 < 70 ºC, while unit is on, indoor fan remains on and runs at set speed.
iii. If indoor coil temperature sensor is damaged, the protection mode will become obsolete and the unit
will work as the pre-heat set time.
7) DEHUMIDIFICATION
MODE
i. Heater, MTV1 and MTV2 always off.
ii. If Tr>=25 ºC, fan will be ON for 3 minutes and OFF for 4 minutes.
iii. If 16 ºC <=Tr<25 ºC, indoor fan will be ON for 3 minutes and OFF for 6 minutes.
iv. If Tr <16 ºC, Indoor fan will be turned off.
At the end of the above dehumidification cycle, the system will decide the next dehumidification
control option. Indoor fan will run at low speed throughout the dehumidification process.
SAKURA - Total Air Conditioning Solution