Operation Limits; Protection The Water Circuit Against Freezing - mundoclima MUENR-H6 Series Installation & Owner's Manual

OPERATION LIMITS

Air conditioner operating conditions
For proper performance, run the air conditoner under the following temperature conditions
Cooling operation
Heating operation
If air conditioner is used beyond the above conditions, safely protection features may come into operation
Note: When the outdoor temperature is too low, the unit in standby mode will activate frost protection, forced to run
pumps or forced heating operation to protect the unit water system.
If air conditioner is used beyond the above conditions, safely protection features may come into operation
C22/,1G M2'(
t(°C)
46
35
-5
4 7 15
DELIVERY WATER TEMPERATURE
Thermal head min.- max.
Water circuit pressure (bars)
Max.storage temperature

PROTECTION THE WATER CIRCUIT AGAINST FREEZING

Water and glycol solutions used as a thermal
vector in the place of water reduce the performance
of the unit. Multiply the performance figures by the
values given in the following table.
ETHYLENE GLYCOL
Modification coefficient
Quality of
Cooling capacity
glycol/%
modification modification
0 1.000
10 0.94
20 0.973
30 0.965
40 0.960
50 0.950
PROPYLENE GLYCOL
Modification coefficient
Quality of
Cooling capacity
glycol/%
modification modification
0 1.000
10 0.976
20 0.961
30 0.94
40 0.93
50 0.925
If no glycol is added, the water must be drained out when there is a
power failure.
Outdoor temperature: -5 ~
Water outlet temperature: 4 ~
Outdoor temperature: -15 ~
Water outlet temperature: 30ºC~54ºC
+($7I1G M2'(
t(°C)
27
0
-15
35
t(°C)
20
DELIVERY WATER TEMPERATURE
Power Water Water flow
resistance modification
1.000 1.000 1.000
0.99 1.11 1.019
0.995 1.26 1.051
0.992 1.42 1.092
0.99 1.791 1.145
0.93 2.100 1.200
Power Water Water flow
resistance modification
1.000 1.000 1.000
0.996 1.071 1.000
0.992 1.19 1.016
0.9 1.30 1.034
0.94 1.72 1.07
0.975 2.150 1.125
40 54
t(°C)
4-6
1-3
55
During winter leaving the unit unused, please drain
water out completely from unit if no antifreeze were
charged into pipeline, or keep power on(at standby
or off status) and ensure that water is contained
inside of unit.
When ambient temperature lower 5 running
Freezing
cooling mode must be charged antifreeze. Refer to
point/
upper parameters for the charged volume.
0.000
-4.000
-9.000
-16.000
-23.000
-37.000
FOULING FACTORS
The performance data given refer to conditions with clean
evaporator plates (fouling factor=1).For different fouling
Freezing
point/
factors,multiply the figures in the performance tables by
0.000
the coefficient given in the following table.
-3.000
-7.000
-13.000
-22.000
-35.000
I A
I A
14