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Powermite 599 Series
MZ Series SSB Electronic Valve
Actuator
24 Vac 3-position (Floating) Control
Description
Features
Application
Product Number
Ordering
Information
Warning/Caution Notations
The Powermite 599 MZ Series SSB electronic valve actuator requires a 24 Vac supply
floating control signal to provide three-position control. This actuator is designed to
work with Powermite 599 MZ Series zone control valves with a 7/32-inch (5.5 mm)
stroke and a threaded valve bonnet that fits the actuator.
•
UL listed for plenum installations.
•
Direct-coupled installation without tools.
•
Manual override
•
Visual position indication.
For use in heating and cooling HVAC applications with Powermite 599 MZ Series
valves that need 45 lb. (200N) nominal force. They can be used in liquid and steam
service applications.
SSB81U
To order a complete valve plus actuator assembly from the factory, combine the
actuator prefix code with the suffix of the valve product number. See Technical Bulletin
TB 252 (155-307P25) for selection procedures.
To order an actuator only, use the product number.
WARNING:
CAUTION:
Technical Instructions
Document No. 155-195P25
Actuator prefix code
Personal injury or loss of life may occur if you do not perform
a procedure as specified.
Equipment damage may occur if you do not follow procedure
as specified.
EA 599-13
December 18, 2003
254
Siemens Building Technologies, Inc.
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Summary of Contents for Siemens SSB81U
- Page 1 To order an actuator only, use the product number. 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 follow procedure as specified. Siemens Building Technologies, Inc.
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Page 2: Specifications
(1). Figure 1. Conduit Connector. Service Kits ASY99 Terminal plug and terminal block cover for SSB81U quantity one (1). Figure 2. Terminal Plug and block cover. 4 224 5611 8 Visual Position Kit to replace one indicator and two gears. -
Page 3: Operation
It is recommended that one transformer power no more than 10 actuators. See Table 1 for terminal connections. NEUT EARTH GROUND ISOLATING CLASS 2 TRANSFORMER FOR 24 Vac POWER 120 Vac Figure 5. Terminal Connections of the SSB81U. Siemens Building Technologies, Inc. Page 3... -
Page 4: Manual Override
The actuator will maintain its position until power is provided or restored. Note: When knob is turned counterclockwise (A), the spindle is retracted. When knob is turned clockwise (B), the spindle is extended Figure 6. Page 4 Siemens Building Technologies, Inc. - Page 5 Information in this publication is based on current specifications. The company reserves the right to make changes in specifications and models as design improvements are introduced. Other product or company names mentioned herein may be the trademarks of their respective owners. © 2003 Siemens Building Technologies, Inc. Your feedback is important to us. If you have comments Document No.