Circulation Pump - Alpha-InnoTec HT 6Split Installation And Operating Manual

Emptying the heating system
1. Connect the hose to the external drain valve of
the system.
2. Then open the drain valve to empty the heating
system.
Chapter 7 |
32 Start-up and regulation

Circulation pump

Pump speed
The circulation pump in HT 6Split / HT 12Split is con-
trolled by frequency, and is automatically regulated
via control and based on the heating demand.
Available pressure, circulation pump.
Later regulation, venting
Initially, air is removed from hot water, and venting may
be necessary. If gurgling can be heard in the heating
system, the entire system needs additional venting.
The installation is vented through vents. When venting,
HT 6Split / HT 12Split must be switched off .
HT 6Split
HT 12Split