Wolf LH - Hydraulic Adjustment for Group Operation; Example 1: Individual Adjustment; Example 2: Tichelmann System

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Hydraulic Adjustment of Unit Heaters
operating as a group
The hydraulic adjustment of unit heaters is a precondition for an economic and optimized
control within a group. The hydraulic adjustment aims at a correct ow rate through all
unit heaters.
General instructions
Example 2:
Pipework assembly according to the Tichelmann system
(equally long pipes per unit heater replace the individual adjustment)
VL
RL
advantage: no pressure adjustment required
disadvantage: higher expenditure of pipework
unit heater
boiler
Individual adjustment via control valves ( in addition to the connection ttings).
Example 1:
VL
RL
advantage: low expenditure of pipework
disadvantage: pressure adjustment required for
each unit heater
unit heater
control valve
boiler