AERMEC NRP 1650 User Manual

26 22.11  5806712_07
11 MAIN HYDRAULIC CIRCUITS
2PIPE SYSTEM
Without hydronic kit
 Do not ll 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 lter: Installation in the immediate vicinity of the heat exchanger is man-
datory,.
Components as standard
1 Plate heat exchanger (SYSTEM SIDE)
2 Plate heat exchanger (RECOVERY SIDE - DOMES-
TIC HOT WATER)
3 Antifreeze electric heater
4 Water temperature sensors (IN/OUT)
5 Water lter (as standard)
Components not provided and responsibility of
the installer
6 Anti-vibration joints
7 Flow switch (MANDATORY)
8 Flow shut-o valves
9 Drain valve
10 Domestic hot water storage tank
11 Drain valve
12 Pressure relief valve
13 Expansion vessel
14 Pump
15 Pressure gauge
16 Loading unit
17 Storage tank
18 Antifreeze electric heater
5
2
4
4
5
1
4
3
4
6
6
6
6
8
8
8
8
8
8
14
14
13
12
11
11
11
7
7
9
9
3
15
18
17
13
9
12
16
10
RECOVERY
SIDE
(hot domestic
water)
SYSTEM
SIDE
(hot/cold)
Water characteristics
System: Chiller with plate heat exchanger
PH 7,5 - 9
Total hardness 4,5 - 8,5 °dH
Electric conductivity 10-500 S /cm
Temperature < 65 °C
Oxygen content < 0,1 ppm
Max. glycol amount 50 %
Phosphates (PO) < 2ppm
Manganese (Mn) < 0,05 ppm
Iron (Fe) < 0,2 ppm
Alkalinity (HCO) 70 - 300 ppm
Chloride ions (Cl-) < 50 ppm
Free chlorine < 0,5 ppm
Sulphate ions (SO) < 50 ppm
Sulphide ion (S) None
Ammonium ions (NH) None
Silica (SiO) < 30 ppm
NOTICE under no circumstances does the unit have to be operated
with water circulating on the heat exchanger whose characteristics
are dierent 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.

AERMEC NRP 1650 Specifications

General

Brand	AERMEC
Model	NRP 1650
Category	Heat Pump
Language	English