Delabie PREMIX NANO 732515 Manual De Instrucciones página 9

CALIBRATING THE TEMPERATURE (Fig. F)
• Our mixers are set at the factory with hot and cold water supply pressures balanced at 3 bar,
the hot water temperature at 65°C +/- 5°C and cold water temperature at 15°C +/-5°C.
If the conditions of use are different, the mixed water temperature may differ from the designated 38°C.
• It is possible to change the mixed water temperature by:
- Removing the cap .
- Turning the screw  with a 5mm Allen key - clockwise to reduce the temperature
and anti-clockwise to increase the temperature.
- NB: The adjustor screw turns continously below 34°C.
- Once the desired temperature has been achieved, replace the cap .
• To complete commissioning, a cold water failsafe should be carried out: within 2 seconds after isolating
the cold water supply, flow from the valve should stop.
• After commissioning, record the following temperatures with a thermometer:
a) Hot and cold water supplies.
b) Maximum mixed water.
c) Mixed water after isolating cold water supply noting particularly the maximum and final temperature.
d) Check equipment, thermometer, etc. used for measurements.
THERMAL SHOCK (Fig. F)
• It is possible to undertake a thermal shock at the temperature of the hot water in the system.
- Remove the cap .
- Turning the screw  with a 5mm Allen key all the way anti-clockwise (~3.5 turns) will deliver hot water
at the maximum temperature in the system.
- Once the thermal shock is complete, re-tighten the screw the same number of turns
(~3.5 turns).
IN-SERVICE TESTING
The purpose of in-service tests is to regularly monitor and record the performance of the thermostatic
mixing valve.
Carry out the procedure (a) to (c) above using the same equipment or the same specifications.
If the mixed temperature has changed significantly from the previous test (e.g. > 1°C), record the change
and before re-adjusting the mixed water temperature, check:
• That the in-line filters are clean.
• The check valves or other anti-back siphonnage devices are in good working order.
• Any isolating valves are fully open.
• Check the balance between hot water and cold water (ΔP < 1 bar).
• Remove and clean the thermostatic cell.
With an acceptable mixed water temperature, complete the procedure (a) to (d) as set out in Calibrating
the Temperature above. If the final mixed water temperature is greater than 43°C, the system requires
service work.
FREQUENCY OF IN-SERVICE TESTING
In-service tests should initially, under normal conditions, be carried out 6 to 8 weeks and 12 to 15 weeks
after commissioning. If no significant changes (e.g. 1°C) in mixed water temperatures are recorded
between commissioning and the above in-service tests then the next in-service tests can be deferred
to 24 to 28 weeks after commissioning.
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