Basic Documentation

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Description
SSB61U Electronic Valve Actuators require a 24 Vac supply and
receive a 0 to 10 Vdc control signal to proportionally control a valve.
SSB81U Electronic Valve Actuators require a 24 Vac supply oating
control signal to provide three-position control. SSB series actuators
are designed to work with Powermite MZ Series Valves with a
7/32-inch (5.5 mm) stroke and a threaded valve bonnet that ts
the actuator.
These actuators automatically calibrate to the specic valve they
are mounted to, and have built-in overload and end of stroke
protection. The also have a manual over-ride to position the valve
for commissioning or in the event of a power loss and for visual
position indication.
Features
• UL-listed for plenum installations
• Direct-coupled for installation without tools
• Close-off up to 70 psi on 1/2-inch valve
• Non-spring return
• Manual override
• Visual position indication
• Orderable as an actuator only or as a complete
valve/actuator assembly
Applications
The Powermite SSB Electronic Valve Actuator is for use in heating
and cooling HVAC applications with Powermite Valves that need
45 lbf. (200 N) of nominal force.
Wiring Diagrams
Specications
Operating Voltage
SSB81U ............................................................................. 24 Vac ±20%
SSB61U .................................................... 24 Vac ±20% or 24 Vdc ±25%
Frequency .................................................................................. 50/60 Hz
Power Supply .............. Earth Ground Isolating, Class 2, 24 Vac Transformer
Power Consumption
SSB81U ........................................................................................ 0.8 VA
SSB61U .........................................................................................2.0 VA
Control Signal (Y) - SSB61U
Voltage ................................................................................. 0 to 10 Vdc
Current ........................................................................................0.1 mA
Running Time
SSB81U ......................................................................... (60 Hz) 150 sec.
SSB61U ....................................................................................... 75 sec.
Nominal Stroke .................................................................. 7/32” (5.5 mm)
Nominal Force .................................................................... 45 lbf. (200 N)
Agency Approvals ...............................................................UL/cUL, UL873
CSA C22.2 No. 24-93
Ambient Temperature
Operation ............................................................34 to 122°F (1 to 50°C)
Transport and Storage ..................................... -13 to 158°F (-25 to 70°C)
Ambient Humidity ....................................... 0 to 90% RH, Non-condensing
Wiring Connection ...................................Terminal Block for Plenum Cable
(Accessory Available for 3/8-inch Flex Conduit)
Mounting Location ................................................ NEMA 1 (Interior Only)
SSB Series Electronic Valve Actuators
Non-Spring Return
24 Vac, Proportional or Floating 3-Position
NEUT
EARTH GROUND
ISOLATING CLASS 2
TRANSFORMER FOR
24 Vac POWER
120 Vac
1
0
Y2
Y1
G
24
Vac
EA0585R1
SSB81U Actuator
+
-
Y
G0
G
24
Vac
NEUT
EARTH GROUND
ISOLATING CLASS 2
TRANSFORMER FOR
24 Vac POWER
120 Vac
A0-V BOARD
EA0069R3
SSB61U Actuator