30
22.11 – 5806712_07
With pumps (P1÷P3 / R1÷ R3)
For all configurations including pump J please contact the factory.
Do not fill up the hydraulic system by glycol near the suction of the pump. High
concentration of glycol could stuck the pump. Do not use the pump to mix water
and glycol.
Water filter: Installation in the immediate vicinity of the heat exchanger is man-
datory,.
Components as standard
1
Plate heat exchanger (COLD WATER PRODUCTION
SYSTEM SIDE)
2
Plate heat exchanger (HOT WATER PRODUCTION
RECOVERY SIDE)
3
Antifreeze electric heater
4
Water temperature sensors (IN/OUT)
5
Drain valve
6
Flow shut-off valves
7
Water filter
8
Drain valve
9
Pump
10 Expansion vessel
11 Pressure relief valve
Components not provided and responsibility of the
installer
12 Anti-vibration joints
13 Flow shut-off valves
14 Drain valve
15 Pressure relief valve
16 Storage tank
17 Pressure gauge
18 Flow switch (MANDATORY)
19 Expansion vessel
20 Drain valve
21 Loading unit
22 Antifreeze electric heater
7
2
4
4
1
4
4
12
12
12
12
13
6
13
6
13
6
13
9
14
14
5
5
5
18
17
16
16
19
15
8
20
7
14
8
9
18
15
17
17
10 11
6
10 11
6
21
3
3
22
HOT
SIDE
COLD
SIDE
Water characteristics
System: Chiller with plate heat exchanger
PH
7,5 - 9
Total hardness
4,5 - 8,5 °dH
Electric conductivity
10-500 μS /cm
Temperature
< 65 °C
Oxygen content
< 0,1 ppm
Max. glycol amount
50 %
Phosphates (PO₄)
< 2ppm
Manganese (Mn)
< 0,05 ppm
Iron (Fe)
< 0,2 ppm
Alkalinity (HCO₃)
70 - 300 ppm
Chloride ions (Cl-)
< 50 ppm
Free chlorine
< 0,5 ppm
Sulphate ions (SO₄)
< 50 ppm
Sulphide ion (S)
None
Ammonium ions (NH₄)
None
Silica (SiO₂)
< 30 ppm
NOTICE under no circumstances does the unit have to be operated
with water circulating on the heat exchanger whose characteristics
are different from those indicated in the table WATER CHARACTER-
ISTICS, under penalty of the warranty expiration. Aermec cannot be
held responsible for any malfunction of the units which are operated
with water whose characteristics are outside the limits in the table
WATER CHARACTERISTICS and for their consequences.
It is of fundamental importance to keep the oxygen concentration in
the water under control, especially in open vessel systems. This type
of system, in fact, is very sensitive to the phenomenon of extra-oxy-
genation of the water (an event that can be encouraged by the incor-
rect positioning of some components). This phenomenon can trigger
corrosion processes and subsequent drilling of the heat exchanger
and pipes.
Summary of Contents for NRP 0800
Page 2: ......
