Total Heat Recovery Features - comatec AQWL Installations- Und Wartungshandbuch

Water connection units with pump and buffer tank

4.9 Total heat recovery features

Temperature sensors
Temperature sensors for recovery system water control, BTRin e
BTRout, are supplied by factory with the unit, already wired, and
must be fitted on the water connections at the heat reclaim conden-
ser inlet and outlet (see wiring diagram).
Three-way valve
The three-way valve must be installed on-site. It permits bypassing
the heat reclaim condenser for correct operation at low return water
temperature. Water and electrical connections, as well as thermal
insulation must be made at the time of installation on-site.
The best position is close to heat reclaim condenser (to achieve a
small water circuit).
NOTE: The space required by this valve does not permit installation
on the factory.
4 - Installation (continued)
Forced shuttering
When recovery system is on, a commutation from air condensing
and water condensing takes place.
At the same time compressor-tandem is automatically shuttered to
allow the control of condensation in the transient phase. The same
process takes place when the system commutates from water con-
densing to air condensing.
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