Airwell AQCL 120 [7/20] Hydraulic circuit diagrams

Airwell AQCL 120 [7/20] Hydraulic circuit diagrams
Page 7
Hydraulic Circuit Diagrams
Hydraulic Circuit Water Volume
P H E
LWTS
WPG
EWTS
HR
FS
WP
G
D P
A P
LW
C
EW
C
DU
CV
DU
FC
CV FC
DU
PT
PT
S F
LWTS
HR
PHE
EWTS
P U
D P
A P
S V
LWC
EWC
S F
WPG
WPG
E T
FS
EAV
DU
CV FC
DU
PT
CV
DU
FC
PT
Basic version
Pack version
COMPONENTS
AP Automatic air purge valve HR Evaporator safety heater
CV Isolating valve LWC Leaving water connection
DP Differential pressure switch (only on models 25/30/35) LWTS Leaving water temperature sensor
DU Drain off valve PHE Plate heat exchanger
EAV
Manual adjustment valve PT Temperature sensor
ET Expansion tank PU Water pump
EWC Entering water connection SF Screen filter (supplied loose for models 25/30/35)
EWTS Entering water temperature sensor SV Safety valve
FC Flexible joint WPG Water pressure tap
FS Flow switch (only on models 40 to 130)
SIZES 25 30 35 40 50 60 70 80 100 120 130
Volume
* (litres) 65 75 85 105 120 145 170 200 251 300 325
(*) Volumes calculated for Eurovent operating conditions (air : 35 °C, water 12/7 °C) with a 2.5 l/kW ratio. For other nominal operating
conditions, recalculate the minimum volume by multiplying the corresponding cooling capacity by the 2.5l/kW ratio.
If the minimum volume requirement can not be met, an additional buffer tank must be included in the installation.
SIZES 25 to 35 40 to 80 100 to 130
Water
300 600 1500
10% glycol solution 225 450 1200
15% glycol solution 215 425 1100
20% glycol solution 200 400 1000
25% glycol solution 185 375 930
30% glycol solution 175 350 860
35% glycol solution 150 300 800
(*) Limit linked to the unit’s expansion tank volume. In the case of an installation with a water volume greater than the values stated in the above
table, an additional buffer tank must be included in the installation.
Minimum volume for comfort air conditioning applications
Maximum volume (*) in litres for comfort air conditioning applications

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