Data Sheet for Product

599 Series 6-Way Ball Valves Technical Instructions
Document Number 155-803
November 10, 2020
Siemens Industry, Inc. Page 7
Operation,
Continued
The Siemens 6-way Ball Valve has an internal pressure equalization function that
ensures the safe operation of heated and chilled ceilings in a closed valve state (45°
position). Changes to media temperature in the heated and chilled ceiling can result in
over or under pressure in a closed state and may even damage part of the heated and
chilled ceiling. The safety function only acts in the closed valve position (45°). The
heating and cooling circuits are safely separated while operating.
Flow Direction
Ensure that the valve is installed with both media sources piped with proper flow
direction. Flow direction is indicated on the bib tag that ships with each 6-way ball valve
and is shown below. See Figure 5.
AS = Supply from Source A CS = Supply to Coil BS = Supply from Source B
AR = Return to Source A CR = Return from Coil BR = Return to Source B
C
V
A = C
V
for Source A C
V
B = C
V
for Source B
Figure 5. Flow Direction.
To illustrate the information in the Operation and Flow Direction sections above, Figure
6 shows the Source A and Source B flow curves versus the actuator rotation and
control signal voltage for part numbers 599-10601-1.5-2.9 and 171C-10601-1.5-2.9. In
this example, the C
V
of Source A (C
V
A) is 1.5, and the C
V
of Source B (C
V
B) is 2.9.
Figure 6. Example Control Characteristic Curve for 599-10601-1.5-2.9
and 171C-10601-1.5-2.9.