Install Instructions

Installation
Welded connections – To minimize the heat impact of the
heat exchanger it is recommended to use TIG or MIG welding
methods. Preparation for welding: Grind inside and outside
of the pipe and, if bevelled, also the bevelled edge at leas t
25 mm from the pipe edge and inward. This should be done
to avoid contamination of copper in the welded area, which
might cause the weld to crack.
Note!
Before connecting the hea t exchanger to the system
consider valve set-up and access points for ex ample
to be prepared to perform c leaning.
Note!
Protect the heat exchanger from overheating by
wrapping a piece of wet cloth around the conne ction
while soldering or welding. Exces sive heating could
melt the internal soldering metal inside the heat
exchanger.
Installation as evaporator or condenser
In applications where a phase change of media occurs, the
heat exchanger must be installed v ertically.
For re frigeration applications – Figure A shows the installation
of an evaporator, which the connections may be either on the
front or on the rear. Figure B shows a condenser.
• Use an anti-freeze thermostat and flow m onitor to ensure a
constant water flow before, during, and at least two minutes
after the compressor has been running.
• Avoid “pump-down”, i.e. emptying the evaporator by
running the compressor after s hut-down until a preset
refrigerant pressure is reached. T he t em perature could then
drop below the brine freezing point, w h ich could damage
the evaporator.
•Useaflow switch and a low-pressure s witch.
• Make sure only m edia from the heat exchanger c an pass
the flow s w itch. The low-pressure switch should assure a
minimum pressure drop of 5 - 10 kPa (0.73 - 1.45 PSI).
Document ID
Language
Edition
3450021401 EN 2017-06
Instruction M anual -
Brazed plate heat exchangers
17
EN