FläktGroup DC_9152GB 20180319_R0 Specifications are subject to alteration without notice
LQRF ECOTERM
LIQUID COUPLED HEAT EXCHANGERS
INSTALLATION INSTRUCTION
Insertion sensor
(not included)
Draining, Size 8 connection
(female thread)
RECOVERY UNIT LQRF
Connections to the pipework should be made by the pipework
con-tractor. Connect the finned heat exchanger to the pipework in such
a manner that expansion forces or the dead weight of the pipework
will not be applied to the liquid connections.
The liquid connections are provided with identification plates for the
inlet and outlet.
For output variant 6-9, there is two coils in each air stream. These
coils are connected in series in which 2 must be connected to 2
on each coil. The water is connected in counterflow air direction as
shown below.
2
+/- +/-
2
2
+/- +/-
2
CAUTION!
Use a pipe wrench to restrain the pipe
connections of the heat exchanger when
tightening the external pipe connections.
2
Installation instruction
FläktGroup DC_9152GB 20180319_R0 Specifications are subject to alteration without notice
FREEZING PROTECTION
When the heat exchanger is used for out door air <0 °C some form
of anti-freeze liquid should be used to protect the finned heat exchang-
ers against the risk of damage by freezing. All finned heat exchangers
can be equipped with surface type or insertion type sensors. The
location of the insertion sensor should be in accordance with the
instruction plate on the side of the unit section.
LQRF HEAT RECOVERY UNIT
The finned heat exchangers are provided with 32 mm dia. drain
connections for connection to a water trap with a depth of at least 100
mm. Preferably use the LQAZ-08 water trap.
PURGING THE FINNED HEAT EXCHANGERS OF AIR
The LQRF can be purged of air either automatically or manually.
Watertrap LQAZ-08
LQAZ-19 automatic
air purging valve
LQAZ-18
manual
air purging
valve
LQAZ-20-1 nipple
DRAINAGE
The heat exchanger cannot be drained completely. Antifreeze must
therefore be added to the liquid if there is risk of freezing.
FINS
Use the QLAZ-20 fin comb to straighten any deformed fins.
CAUTION!
To avoid injuries, wear protective gloves
wheneverworkingwith the fin comb.
QLAZ-20 fin comb
LQAZ-18 manual air purging valve
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