How To Disassemble The Dhw Heat Exchanger - Baxi PRIME HT 240 Installers And Users Instructions

PRIME HT 1.120
Graph 4.2
23. HOW TO DISASSEMBLE THE DHW HEAT EXCHANGER (PRIME HT 240 - HT 280 - HT 330)
The stainless steel plate-type DHW heat exchanger is easily disassembled with a screwdriver by operating as described
below:
drain, if possible, only the boiler system, through the drain tap;
•
• drain the DHW system from water;
• remove the circulation pump;
• remove the two screws (right in front of you) securing the DHW heat exchanger and pull it off its seat (Figure 25).
Figure 25
To purge the exchanger and/or the DHW system we suggest the use of Cillit FFW-AL or Beckinser HF-AL.
For specific areas where water hardness exceeds 20°F (1°F = 10 mg of calcium carbonate per one litre of water) we
recommend you install a polyphosphate metering device - complying with the applicable regulations - in the cold water
inlet pipework.
WATER FLOW RATE (l/h)
flow sensor
DHW heat exchanger securing
30
INSTRUCTIONS FOR THE INSTALLER
screws