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Table 15- Legend Closed loop Hydronic Free cooling P&ID
LEGEND
ID
DESCRIPTION
a
INVERTER DRIVEN PUMP
b
BPHE – INTERMEDIATE HEAT EXCHANGER (* double for some units)
10
ACCESS FITTING 1/4” NPT
q1
PLUGGED FITTING ANGLED 1/4” NPT – 6 mm
q2
PLUGGED FITTING ANGLED 1/4” NPT – 4 mm
c
RECEIVER VALVE 1’’
d
VALVE
e
ELECTRIC HEATER
f
SAFETY VALVE 6 bar
g
PLUGGED FITTING 1/4” NPT
h
AIR VENT 3/8” NPT /TBC)
m
EXPANSION VESSEL (* double for some units)
r
WATER FILTER
t
TWO WAY VALVE MOTORIZED
u
WATER FILTER
v
FREECOOLING COIL
TT
TEMPERATURE SENSOR
LEGEND – LINE LIST
ID
LINE (from / to)
THERMAL INSULATION
L1
WATER IN LINE
YES (19 mm)
L2
EVAPORATOR WATER IN LINE
YES (19 mm)
L3
EVAPORATOR WATER OUT LINE
YES (19 mm)
L4
BPHE WATER IN LINE
YES (19 mm)
L5
BPHE WATER OUT LINE
YES (19 mm)
L6
FREE COOLING WATER IN
NO
L7
FREE COOLING MANIFOLD IN
NO
L8
FREE COOLING MANIFOLD OUT
NO
L9
FREE COOLING WATER OUT
NO
Water inlet and outlet are indicative. Please refer to the machine dimensional diagrams for exact water connections.
DESIGN CONDITION
LINE
PS [bar]
TS [°C]
CLOSED LOOP
L6; L7; L8; L9
6
-10/+30
EVAPORATOR WATER IN/OUT
L1; L2; L3; L4; L5
10
+4/+30
5.1.2 Coolant quality requirements
There are three main reasons for this suggested minimum advised content of glycol:
1. Corrosion protection
2. PH buffering increasing
3. Inhibition of the proliferation of most bacteria and fungi
In alternative to water+glycol, to ensure the long operating life of microchannel free cooling coil, the following conditions
for coolant shall be respected:
The minimum mandatory content of glycol is 25% (ethylene or propylenic).
For operation at less than -10°C the percentage of glycol must be determined by the installer.
The use of other substances different from ethylene or propylenic glycol shall be approved by the
factory.
For operation below +4°C the use of glycol is mandatory.
Use only pre-made mixtures. The manufacturer cannot be considered responsible if a water-glycol
mixture is created on site.
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Productinformatie
| Merk | Daikin |
| Model | EWFD495TZSSD1 |
| Categorie | Airco |
| Taal | Nederlands |
| Grootte | 11779 MB |
