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Document 463544

MP-220A Motor Pack

Spring return electric actuators for use

with WD-200 series damper

Installation, Operation and Maintenance Manual

Please read and save these instructions for future reference. Read carefully before attempting to assemble, install, 
operate or maintain the product described. Protect yourself and others by observing all safety information. Failure 
to comply with these instructions will result in voiding of the product warranty and may result in personal injury 
and/or property damage.

MP-220A Motor Pack

1

Motor Pack Contents

1. Actuator
2. Actuator Bracket
3. Actuator Arm Assembly
4. Connecting Links
5. Actuator Spring
All necessary hardware included

Electrical Guidelines

All wiring shall be done in accordance with the 
National Electrical Code ANSI/NFPA-70 latest edition, 
any local codes that may apply, and wiring diagrams 
developed in compliance with the job or project 
design and specifications. 

Attention

Electrical input may be needed for this equipment. 
This work should be performed by a qualified 
electrician. Verify power before wiring actuator. 
Greenheck is not responsible for any damage to, or 
failure of the unit caused by incorrect field wiring. To 
avoid causing death or serious bodily harm to building 
occupants, follow all instructions carefully. Dampers 
must close completely to preserve the integrity of the 
fire smoke separation.

Summary of Contents for MP-220A

Page 1: ...t 3 Actuator Arm Assembly 4 Connecting Links 5 Actuator Spring All necessary hardware included Electrical Guidelines All wiring shall be done in accordance with the National Electrical Code ANSI NFPA 70 latest edition any local codes that may apply and wiring diagrams developed in compliance with the job or project design and specifications Attention Electrical input may be needed for this equipme...

Page 2: ...xt hook as shown on page 1 Note It is important to avoid too much spring tension use just enough tension to close the damper Too much tension could impair opening of the damper or cause damage to the components as the crank arm impacts the rubber bumper 5 Actuators are supplied with junction box and cover When wiring make sure the supply voltage agrees with the actuator voltage On dual voltages mo...

Page 3: ...uators Blue 208 220 230 240V Dual Voltage Actuators Optional transformer for 277 380 575 or 600 volts 120V actuator required Optional transformer for 277 380 575 or 600 volts 120V actuator required Blue 24V Single Voltage Actuator 460V Single Voltage Actuator White Brown Brown 110 115 120V Dual Voltage Actuators Blue 208 220 230 240V Dual Voltage Actuators Optional transformer for 277 380 575 or 6...

Page 4: ...Rev 7 September 2020 Copyright 2020 Greenheck Fan Corporation 4 Transformers Optional transformer for 277 380 575 or 600 volts 120V actuator required Optional transformer for 277 380 575 or 600 volts 120V actuator required Blue 24V Single Voltage Actuator 460V Single Voltage White Brow Brow 110 115 120V Dual Voltage Actuators Blue 208 220 230 240V Dual V 575 600 Volt Transformer Model B050WZ13 er ...

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