18
GB
6.3.2 - VERIFICATIONS
• Purging of circuits.
• Hydraulic pressure (1.5 to 2.5 bar).
• Water flowrate: the unit is equipped with 1/4 SAE pressure taps at the circulator inlet and outlet (see paragraph 2.1.1),
so that the pressure loss can be measured using a hydraulic pressure gauge. Use the circulator curves below to
determine the water flow rate.
In order for the apparatus to work properly, the nominal flow rate must be respected.
6.3.3 - CIRCULATOR CURVES
HKBE - HKCE - HKDE
Circulator UPML 32-95-180 AUTO
6.3 - ADDITIONAL HYDRAULIC CIRCUIT VERIFICATIONS
6.3.1 - FORCED CIRCULATOR OPERATION
• In order to conduct the final verifications of the hydraulic circuit, force the pump to start as follows (installation power
ON):
- Set the system control unit to “OFF”.
- Temporary turn off the circuit breaker Q4.
- Set microswitch SW3 of the control PCB A2
in
configuration “Terminal unit or mixed zone”
OFF-OFF.
- Turn on the circuit breaker Q4.
- Press and hold the button for 5 seconds.
The circulator starts.
The circulator indicator light flashes.
- Check that the “H
2
O” flow indicator is illuminated.
NOTE: Don’t make the outdoor unit operate during the setting of microswitch SW3.
2.1 HKDE + O.U . SIZE 140
1.9 HKBE/HKCE + O.U . SIZE 140
1.9 HKBE/HKCE/HKDE + O.U . SIZE 110
1.65 HKBE/HKCE + O.U. SIZE 80
1.4 HKBE + O.U. SIZE 65
0.9 HKBE + O.U. SIZE 50
