Airwell Aqu@Fan AHC 5030 [12/44] See appendix

Airwell Aqu@Fan AHN 4030 [12/44] See appendix
10
WATER COIL HEADERS
Each water coil header has 1/2" female threaded pipe connection for water supply and water return.
Do not push the coil headers to interior of unit casing, when tightening the screws of
water connections.
AIR VENTS AND DRAINS
Coil headers have air vents and drains. Air vent is located at the upper part of the coil header, while drain is located
at the lower part.
COIL WATER SUPPLY AND RETURN
Due to the coil design and small effect on capacity, there is no preferential water supply and water return on fan
coil units. However we recommend water supply on the lower header of the coil.
COOLING HEATING COOLING HEATING
2-way on/off or
modulating valves
4-way on/off or modulating
valves
WATER CONNECTION DIAGRAMS OF CONTROL VALVES
INSTALLATION OF PIPE THERMOSTAT (CHANGE OVER)
TRM-FA AND TRM-VP
The pipe thermostat (change-over switch) supplied is
to be mounted on the water supply pipe.
Crimp the 6.35 F fast-on clips with their insulator
bushes (supplied) on the wires of this thermostat.
OPERATING TEMPERATURE RANGE
TAE20 AND AQUANET
The sensor (change over) supplied is to be fitted to the water inlet tube.
Before assembling the change over sensor, coat the
tube with heat conducting paste to guarantee that the
real temperature is recorded.
The 9 and 10 (electric terminal) change over sensor
inputs are connected to the mains power supply. If it is necessary to extend the sensor wires, ensure
that wires appropriate for this voltage are used.
SEE APPENDIX
+
+
AQU@FAN II
AQU@FAN II
Opening 30 ± 4° C
Closing 15 ± 4° C

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