19
0
4
5
8
9
3
•
V
e
rsi
o
n
2
.3
•
1
6
.0
3
.2
0
1
2
2.4 Heat exchanger
– MHX 85,
continued
Values
This table shows the set points/control strategy for the MHX 85 heat exchanger.
All listed temperatures are return air temperatures (from the enclosure to the heat ex-
changer). Fan speeds are detected and controlled from speed signals from the fans.
Reduction
Designation
Value
IR1
Minimum internal fan speed
1100 RPM
IR2
Maximum internal fan speed
2100 RPM
IT-
Cut off temperature, internal fan
0 °C
IT0
Cut in temperature, internal fan
5 °C
IT1
Ramp up temperature set point, internal fan
40 °C
IT2
Maximum RPM temperature set point, internal fan
50 °C
ER1
Minimum external fan speed
1100 RPM
ER2
Maximum external fan speed
2000 RPM
ET-
Cut off temperature, external fan
25 °C
ET0
Cut in temperature, external fan
30 °C
ET1
Ramp up temperature set point, external fan
45 °C
ET2
Maximum RPM temperature set point, external fan
50 °C