Siemens 599 Series Installation Instructions

599 Series Zone Valves
STA/STP Thermic Actuators
2-Position or PWM Control
Product Description
24 Vac/Vdc Zone Valve Thermic Actuator with a
maximum stroke of 0.18-inch (4.5 mm).
Contents
·
One actuator with cable
·
One bayonet nut
Product Numbers
STA73U Normally Closed
STP73U Normally Open
Warning/Caution Notations
WARNING:
CAUTION:
Required Tools
No tools are required to mount the actuator to the
valve. Best results are achieved by hand tightening.
Expected Installation Time
15 minutes
CAUTION:
When selecting a heating or cooling on/off
zone valve that must be closed for long
periods of time or an entire season, use a
Normally Closed actuator (such as the
STA73U Actuator) for new or replacement
applications.
If the valve needs to be open for extended
periods of time or an entire season, use a
Normally Open actuator (such as the
STP73U Actuator) for new or replacement
applications.
STP Actuators should not be used on hot
water systems that remain operational all
year long or where actuators are continually
commanded closed during the summer.
Item Number 129-701, Rev. BA
Personal injury or loss of life
may occur if you do not follow
the procedures as specified.
Equipment damage, or loss of
data may occur if you do not
follow the procedures as
specified.
Installation Instructions
Installation
Installing the Actuator
WARNING:
Do not connect power until after the actuator
is mounted to the valve.
Figure 1. Acceptable Mounting Positions.
NOTE: Actuators may be installed in any position
(360°).
1. Remove the black actuator support ring (AL50)
from the top of the valve. Discard the ring; it is
no longer needed.
2. Screw the bayonet nut (included with actuator)
onto valve bonnet as tightly as possible, by
hand. See Figure 2
CAUTION:
Do not use any tools such as pliers, pipe
wrenches, or vice grips to tighten the nut.
Doing so will damage the bayonet nut, and
the actuator will not be able to properly
mount to the valve.
Figure 2.
Document No. 129-701
May 22, 2017
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