Check Points - Danfoss DHP-A Service Instructions Manual

Service instructions
°C ohm, Ω outdoor and defrost sensors
-15 868
-10 681
-5 538
0 428
5 343
10 276
15 224
20 183
25 150
30 124
35 103
40 86
45
50
55
60
65
70
75
80
85
2.3

Check points

Temperatures
Condensing temperature
Evaporation temperature
Superheating
Radiator circuit
Brine circuit
Overheating R407C
Expansion valve factory setting
Danfoss TUBE R404A, 4.2 kW
Danfoss TUBE R404A, 5.6 kW
Danfoss TUBE R404A, 8,4 kW
Danfoss TUBE R404A, 12.0 kW
Danfoss TUBE R404A, 15.3 kW
Danfoss TUBE R407C, 11.0 kW
Danfoss TUBE R407C, 17,0 kW
Refrigerant
R404A (Only applies to the DHP-A models)
8
Domestic heat pumps
1000 ohm, Ω
1000
1039
1078
1117
1155
1194
1232
1271
Values
0,5 – 1,5°C above supply line temperature
7 - 8°C lower than incoming brine
4 - 8 K temperature difference
5 - 10 K temperature difference
2 - 5 K temperature difference
4K ±1 K
Setting
From fully closed position, screw 3 turns out
From fully closed position, screw 5,5 turns out
From fully closed position, screw 5 turns out
From fully closed position, screw 5.25 turns out
From fully closed position, screw 2.75 turns out
From fully closed position, screw 6.25 turns out
From fully closed position, screw 5,5 turns out
Pressure switch
Low pressure switch
Operating pressure switch A
Operating pressure switch B
High pressure switch
VIGFI102
kilo ohm, kΩ other sensors
66,3
52,4
41,8
33,5
27,1
22,0
18,0
14,8
12,2
10,1
8,5
7,1
6,0
5,0
4,2
3,7
3,1
2,7
Break pressure
0.08 MPa
2.65 MPa
2.85 MPa
3,10 MPa
Danfoss Heating Solutions