Maintenance / Repair; Hibernation Of The Wwt In Frost-Proof Rooms; Hibernation Of The Wwt In Non Frost-Proof Rooms; Heat Exchanger With Vertical Layout - Behncke QWT 100-20 Installationsanleitung

Maintenance / Repair

6 Maintenance / Repair
• Check the heat exchanger and its connections for their tightness one a week.
6.1

Hibernation of the WWT in Frost-proof Rooms

Intervention in technical systems by unqualified persons might lead to injury or
damage.
For hibernation in frost-proof rooms, the heat exchanger must be completely filled
take care
with water.
6.2

Hibernation of the WWT in Non Frost-proof Rooms

Expert hibernation without frost damage is possible if the following steps are
observed:
• Close blocking units in both water cycles.
• Drain heat exchanger and adjoining pipes until blocking units.
6.2.1

Heat Exchanger with Vertical Layout

• Drain heat exchanger completely via drain fittings.
6.2.2

Heat Exchanger with Horizontal Layout

• Remove heat exchanger with horizontal layout.
• Flush heat exchanger in order to remove contamination and store in a dry place.
7

Troubleshooting

Effect
No performance
26
Checking the possible reason
have the blocking units been opened?
is the heat exchanger completely filled with water in both
cycles?
has the heat exchanger been ventilated?
is there sufficient flow (see Technical Data) in the heating cycle?