Cooling-Chilled Water Modulating Valve Piping 2-Way Modulating, Normally Closed, Chilled Water Valve Piping (Typical); 3-Way Modulating, Normally Closed, Chilled Water Valve Piping (Typical) - Daikin AVS Installation Manual

Cooling – Chilled Water Modulating
Valve Piping
2-way Modulating, Normally Closed, Chilled
Water Valve Piping (typical)
The 2-way Modulating chilled water valve is furnished normally
closed to the coil. When the valve is de-energized (off) there is no flow
through the coil. Energizing the valve allows flow through the coil in
a modulating fashion.
CAUTION
Refer to the arrows on the modulating valve body to determine
the direction of flow. If the valve is mounted improperly, the unit
will not operate properly and damage to the valve may result.
Figure 81 - 2-way Modulating Valve Control, Normally Closed, Chilled
Water Piping
Return
Balancing and Shutoff Valve
2-way Modu-
Shutoff Valve
Supply
Figure 82 - 2-way Modulating, Normally Closed Chilled Water Valve
Piping
(Piping Outside Unit End Compartment)
11
15
4
5
7
6
See page 25 for number designation descriptions.
Page 28 of 60
lating
Valve
Unit Coil
Return
Supply
Unions
2
15
3
15
S5 Sensor
3-Way Modulating, Normally Closed, Chilled
Water Valve Piping (typical)
The 3-way Modulating chilled water valve is furnished normally closed
to the coil. When the valve is de-energized (off) the flow bypasses the
coil. Energizing the valve allows flow through the coil in a modulating
fashion.
Figure 83 - 3-way Modulating Valve Control, Normally Closed, Chilled
Water Piping
Return
Balancing and Shutoff Valve
Modulating
Common
N.O.
Balancing Valve
Shutoff Valve
Supply
Figure 84 - 3-way Modulating Valve Control
(Piping Within Unit End Compartment)
8
4
5
7
See page 25 for number designation descriptions.
3-way
Union
Valve
Unit Coil
N.C.
Return
Supply
Union
11
2
15
3
S5 Sensor
6
IM 817-4