Daikin Altherma HT Service Manual

Basic Control ESIE09-08B
48 Function
2.2 Compressor PI Control
Compressor PI Control
Carries out the compressor capacity PI control to maintain Tc at constant during heating
operation to ensure stable unit performance.
Outdoor compressor (R-410A)
Indoor compressor (R-134a)
11kW -> max. 21 steps
14kW -> max. 26 steps
16kW -> max. 30 steps
STn
INV(Fullload) INV(Unload) STn INV(Fullload) INV(Unload) STn INV(Fullload) INV(Unload)
1 36.0Hz 11 80.0Hz 21 140.0Hz
2 39.0Hz 12 86.0Hz 22 146.0Hz
3 43.0Hz 13 92.0Hz 23 152.0Hz
4 47.0Hz 14 98.0Hz 24 158.0Hz
5 52.0Hz 15 104.0Hz 25 164.0Hz
6 52.0Hz 57.0Hz 16 110.0Hz 26 170.0Hz
7 57.0Hz 64.0Hz 17 116.0Hz 27 175.0Hz
8 62.0Hz 71.0Hz 18 122.0Hz 28 180.0Hz
9 68.0Hz 78.0Hz 19 128.0Hz 29 185.0Hz
10 74.0Hz 20 134.0Hz 30 190.0Hz
STEP INV STEP INV STEP INV
1 40.0Hz 11 98.0Hz 21 158.0Hz
2 46.0Hz 12 104.0Hz 22 164.0Hz
3 52.0Hz 13 110.0Hz 23 170.0Hz
4 57.0Hz 14 116.0Hz 24 174.0Hz
5 62.0Hz 15 122.0Hz 25 182.0Hz
6 68.0Hz 16 128.0Hz 26 188.0Hz
7 74.0Hz 17 134.0Hz 27 194.0Hz
8 80.0Hz 18 138.0Hz 28 200.0Hz
9 86.0Hz 19 144.0Hz 29 206.0Hz
10 92.0Hz 20 152.0Hz 30 210.0Hz
 Compressors may operate in a pattern other than those listed in above tables subject to the operating conditions.
Selection of full load operation to/from unload operation is made with the unload circuit solenoid valve
(Y3S=SVUL). The full load operation is performed with the SVUL set to OFF, while the unload operation is
performed with the SVUL set to ON.

Daikin Altherma HT Specifications

General

Type	Air-to-water heat pump
Refrigerant	R-410A
Water Outlet Temperature	Up to 80°C
Operating Temperature Range	-20°C to 35°C
Power Supply	3-phase, 400V
Energy Efficiency Class (Heating)	A++