Start-Up - Weinmann & Schanz DRAIN-UNIT Manual De Instrucciones

On systems with more than 3 collectors, these should have an internal coil configuration. In this
case they should be installed in series of 2 by 2, and the unit in parallel.
System with 8 collectors:
System with 6 collectors:
System with 4 collectors:
Collectors must not be installed in series.
• Items that do not need to be installed:
- Automatic bleed valves.
- Expansion vessel.
7.

START-UP

• Filling the system.
Before filling the installation with the working fluid the circuit should be cleaned as well as pressure
tested (not to be done over 3bar when the Drain-Unit is connected).
Ensure that the Drain-Unit is not connected to stop the pumps running on empty.
1. Once the preliminary operations are completed, proceed to fill the circuit from the filling outlet (2) or,
where appropriate, a lower point if there is one (so that the air is more easily evacuated).
2. Fill the circuit with a filling pump or similar system. Open the cup (3) to verify that the fluid reaches
the delivery line. Fill the circuit until the separation tank/s are full except for approximately 2 cm
and also check that the fluid has reached the flow meter (7).
System with 2 collectors:
N.b.: Installation not correct, the central collector means a siphon
in the circuit and therefore will not drain in the standby position.
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