
Technical Instructions 599 Series Zone Valve Actuator
Document No. 155-321P25 SF Series Electronic Valve Actuator
August 8, 2017 2-position Control
Page 2 Siemens Industry, Inc.
Warning/Caution Notations
WARNING: Personal injury or loss of life may occur if you do not perform
a procedure as specified.
CAUTION: Equipment damage may occur if you do not perform a
procedure as specified.
Specifications
Power supply
24 Vac 120 Vac
Frequency 50/60 Hz 60 Hz
Power consumption 9.8 VA 9.8 VA
Function Running time 10 seconds
Nominal stroke 1/10-inch (2.5 mm)
Nominal force 24 lb (105Nm)
Agency certification UL listed to UL873
cUL certified to Canadian Standard
C22.2 No. 24-93
Ambient conditions Operation
Temperature 41°F to 122°F (5°C to 50°C)
Humidity 0% to 90% rh (non-condensing)
Transport and storage
Temperature –13°F to 158°F (–25°C to 70°C)
Humidity 0% to 90% rh (non-condensing)
Miscellaneous Mounting location NEMA 1 (interior only)
Noise <35 db
Medium temperature 34°F to 230°F (1°C to 110°C)
Dimensions- Inches (mm) 3.4 (85.2) H × 4.4 (111) W × 2.3 (58) D
Weight 1.18 lb (0.54 kg)
Operation A 24 Vac or 120 Vac control signal drives the actuator from its normal
(0 voltage) position.
In the event of power loss, the actuator will return to its normal extended position for the
SFA model actuators or normal retracted position for the SFP models.
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 SFA71U 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 SFP71U Actuator) for new or
replacement applications.
SFP 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.