Hydraulic Unit (Dhw); Cleaning The Cold Water Filter; Final Commissioning; Final Assembly - Baxi LUNA DUO-TEC 60 GA Notice D'installation

11.6 Hydraulic Unit (DHW)

For special areas, where water is harder than 200 ppm or 12 grains/ gallon, install polyphosphate dispenser or equivalent treatment
system, compliant with current regulations.

11.7 Cleaning The Cold Water Filter

Boiler is fitted with cold water filter located on DHW hydraulic assembly (B). To clean:
• Drain domestic hot water system. (60 GA only)
• 1.48 GA drain is field supplied/installed.
• Remove nut on DHW priority sensor unit using 18 mm wrench. (B)
• Pull out flow sensor and its filter.
• Remove any impurities.
When replacing and/or cleaning "O-rings" on hydraulic assembly (DHW), use only Molykote 111 as a lubricant,
not oil or grease.
Model 60 GA
D C E

11.8 Final Commissioning

• Allow heating system to heat. Balance the system to achieve temperature difference across heating supply and return pipes
at the boiler.
• Check system for proper volume and pressure. See page 5 for acceptable volume and pressure.
• Turn off boiler.
• Thoroughly flush water pipe work. Clean filters in heating return and supply water isolating valves.
• Repressurize the system.

11.9 Final Assembly

• Place front jacket in position over boiler. Ensure bottom is located behind the control panel. Secure in position at top using
screws previously removed.
• If boiler is to be left in service with the User, set controls and room thermostat.
• If boiler is not to be handed over immediately, close boiler gas service valve and turn off electrical supply.
• If there is possibility of boiler being left during frost conditions drain boiler and system. See section 11: Component
Replacement Or Periodic Cleaning. Manufacturer recommends attaching a label to the boiler drawing attention to the fact
that the system has been drained.

11.10 User Information

Advise and demonstrated to User the following important information:
A. How to light and turn off boiler. How to operate system controls.
B. Importance of annual servicing of boiler to ensure safe and efficient operation.
C. Servicing or replacement of parts shall be carried out by a qualified personnel.
D. Ensure boiler controls and room thermostat, if fitted, are set to User's requirements.
E. Tell User about sealed system pressure.
NOTICE
B A
A
DHW exchanger fixing screw
B
DHW priority sensor with filter
C
DHW temperature NTC probe
D
Low water cutoff
E
Braze Plate
55
240012485 REV A [12/30/2018]