AERMEC NRL 280-75, Техническое руководство

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20 Aermec 13_01. 5641300_00
NRL 0280-0750 60Hz
EN
9. OPERATION LIMIT
9.1. COOLING MODE ¹
9.2. HEATING MODE ¹
External air temperature b.s.
Temper
atur
e of the w
at
er
pr
oduced C
ONDENSER
The units, in standard configuration, are not suitable
for installation in salty environments. For functioning li-
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.
Ext
ernal air t
emper
atur
e b.s.
Temperature of the water produced EVAPORATOR
5
14
23
32
41
50
59
68
77
86
95
104
113
114,8 °F
46 °C
36 °C
96,8 °F
122
-15
-10
-5
0
5
10
15
20
25
30
35
40
45
50
°C
°C
°F
°F
-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
Thermosta c valve °
Thermosta c valve Y
Thermosta c valve X
STANDARD STANDARD
functioning functioning
Functioning with Functioning with accessory accessory
DCPX DCPX
Functioning with Functioning with
glycoled water glycoled water
Functioning with Functioning with DCPX DCPX
acc acc
water glycoled 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
14 5 -4 23 32 41 50 59
59
68
68
77
77
86
86
95
95
104
104
113
113
122
122
131
140
42 °C
107,6 °F
-15 °C
5 °F
55 °C 131 °F
STANDARD STANDARD
functioning functioning
Functioning Functioning
with DCPX with DCPX
(accessory) (accessory)
REFRIGERANT SIDE
High pressure
side
Low pressure
side
Acceptable maximum pressure bar/PSI 45/653 30/435
Acceptable maximum temperature °C / °F 120 / 248 51 / 131
Acceptable minimum temperature °C / °F -30 / -22 -30 / -22
WATER SIDE
Acceptable maximum pressure bar/PSI 6/87
9.3. PROJECT DATA
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 of the DCPX_UL
device.
Note:
1 - In summer mode the unit can be started
with external air 46°C/114,8°F and water inlet
35°C/95°F. In winter mode the unit can be started
with external air -15°C/5°F and water inlet
20°C/68°F. Operate in such condi ons is permit-
ted only for a short me and to bring the system
up to temperature. To reduce the me of this
opera on, it is recommended to install a three-
way valve that allows bypassing water from the system u li es, un l the condi ons that allow
the unit to work within the permi ed opera on
limits are achieved.
Hydarulic circuit safety valve
(only in version with storage tank or with pump)
Calibrated at 6/87 bar/PSI and with piped discharge, which intervents
by discharging overpressure if abnormal work pressure occur.