911_14. 5641200_01
NRL 0280-0750 60Hz
EN
4. OPERATION LIMIT
4.1. COOLING MODE ¹
4.2. HEATING MODE ¹
External air temperature b.s.
Temperature of the water
The units, in standard configuration, are not suitable
-
mits, please refer to the diagrams below, valid for AHRI
standard conditions.
Wind breaks should be implemented if the unit is
installed in particularly windy areas, to prevent a
malfunction of the unit.
External air temperature b.s.
ATTENTION
Contact our technical sales depart-
ment if the unit needs to operated
outside the operating limits.
ATTENTION
If the unit is installed in particu-
larly windy areas, we recommend
providing for windbreak to avoid
malfunctioning
Note:
1 - In summer mode the unit can be started
-
way valve that allows bypassing water from the
limits are achieved.
REFRIGERANT SIDE
High pressure
side
Low pressure
side
Acceptable maximum pressure bar/PSI 45/653 30/435
Acceptable maximum temperature 120 / 257 51 / 131
Acceptable minimum temperature -30 /- 22 -30 / -22
WATER SIDE
Acceptable maximum pressure bar/PSI 6/87
Hydarulic circuit safety valve
Calibrated at 6/87 bar/PSI and with piped discharge, which intervents
by discharging overpressure if abnormal work pressure occur.
5
14
23
32
41
50
59
68
77
86
95
104
113
114,8 °F
46 °C
36 °C
96,8 °F
-15
-10
-5
0
5
10
15
20
25
30
35
40
45
50
-6
-7
-8
-5
-4
-3
-2
-1
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
17,6
19,4
21,2
23,0
24,8
26,6
28,4
30,2
32,0
33,8
35,6
37,4
39,2
41,0
42,8
44,6
46,4
48,2
50,0
51,8
53,6
55,4
57,2
59,0
60,8
62,6
64,4
66,2
68,0
STANDARD
functioning
Functioning only with "I" funs
Functioning with
glycoled water
Functioning only with "I"
funs
+
water glycoled
25
20
15
30
35
40
45
50
55
60
-10-15-20 -5 0 5 10 15 20 25 30 35 40
45 50
°C
°C
°F
°F
145-4 23 32 41 50 59
59
68
77
86
95
113
122
42 °C
107,6 °F
-15 °C
5 °F
55 °C 131 °F
STANDARD
functioning
Functioning
only with "I"
funs
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