Daikin FHYC35B7V1 [83/344] Kfido varies depending on discharge pipe temperature do when do dofini 45 c kfido kfidoh 128 128 hot start when do dofini 45 c kfido kfidol 179 128 cold start

System control SiE18-201

72 Main Functions

Determination of initial frequency for cooling

Initial frequency FSR is determined based on the correction of outside air temperature (DOA)

and discharge pipe temperature (DO) in accordance with the above matrix.

FSR = KFIDO ° (2/128 ° (DOA - 35˚C) ° FINI1+FINI1)

KFIDO varies depending on discharge pipe temperature DO

When DO ≥ DOFINI (45˚C): KFIDO = KFIDOH (128/128) --- Hot start

When DO < DOFINI (45˚C): KFIDO = KFIDOL (179/128) --- Cold start

Reference Outside Air Temperature Hot Start Cold Start

35˚C 128/128 179/128

Outside Air

Temperature

Hot Start Cold Start

-5 37.5% 52.4%

0 45.3% 63.4%

5 53.1% 74.3%

10 60.9% 85.2%

15 68.8% 96.1%

20 76.6% 107.1%

25 84.4% 118.0%

30 92.2% 128.9%

35 100.0% 139.8%

40 107.8% 150.8%

45 115.6% 161.7%

Initial HZ multiplication

Hot start

Cold start

-10 -5 0 5 10 15 25 30 35 40 45 50

Outside

air temperature

20%

40%

60%

80%

100%

120%

140%

160%

180%

(M1009)