Specifications

Service – 45VMBMH302
15.2 Measurement points
Conversion table for sensors
 
When reading the resistance of the sensors, the sensor leads must first be disconnected from the control
equipment.
Outdoor sensor Other sensors
°C Ohm, Ù °C
Kiloohm,
kÙ
-30 1884 0 66,3
-25 1443 5 52,4
-20 1115 10 41,8
-15 868 15 33,5
-10 681 20 27,1
-5 538 25 22,0
0 428 30 18,0
5 343 35 14,8
10 276 40 12,2
15 224 45 10,1
20 183 50 8,5
25 150 55 7,1
30 124 60 6,0
35 103 65 5,0
40 86 70 4,2
75 3,7
80 3,1
85 2,7
90 2,3
95 2,0
1. Disconnect the sensor cable at the I/O
card.
2. First measure the sensor including the
cable.
3. Then measure the sensor only.
15.3 Check points
Temperatures
Name Values
Condensing temperature 0.5 – 1.5 °C above supply line temperature
Evaporation temperature 7 - 8 °C lower than incoming brine
Overheating 4 - 8 K temperature difference
Radiator circuit 5 - 10 K temperature difference
Overheating R407C 4K ±1 K