MEP-7xxx Direct-Coupled Actuators (up to 320 in-lb.)
3
Applications Guide, AN1113A Rev. D
Torque Requirements for Dampers
Introduction
This application guide gives torque selection, ac-
cessory, master/slave wiring, troubleshooting, and
other related information.
For help choosing the best model for an application,
and also the
.
For
specifications and other information
, see the
MEP-7500/7800 Series Data Sheet
.
For
general mounting, connections, and configura
-
tion
, see the
MEP-7200/7500/7800 Series Installation
For possible proportional heating/cooling
applica-
tions using the CTE-5202 electronic thermostat,
see
.
For
valve applications
, see information on:
•
Two
-Way, Flanged
Ball
Valves (4
to 6")
•
Three
-Way, Flanged
Ball
Valves
(4 to 6")
•
Two
-Way, Rubber-Lined,
Butter
-
fly
Valves (2 to 6")
•
Three
-Way, Rubber-Lined,
But-
terfly
Valves (2 to 6")
The latest
support files are always available on the
KMC Controls web site (
)
.
Important Notices
The KMC logo is a registered trademark of KMC
Controls, Inc. All rights reserved. No part of this
publication may be reproduced, transmitted, tran
-
scribed, stored in a retrieval system, or translated
into any language in any form by any means with-
out the written permission of KMC Controls, Inc.
The material in this document is for information
purposes only.
The contents and the product it de
-
scribes are subject to change without notice.
KMC
Controls, Inc. makes no representations or warran-
ties with respect to this document. In no event shall
KMC Controls, Inc. be liable for any damages, direct
or incidental, arising out of or related to the use of
this document.
Damper manufacturers should provide information
about the required minimum actuator torque. If
that information is not available, use the following
Damper Type
Opposed Blades Without Seals
Parallel Blades Without Seals
Opposed Blades With Seals
Parallel Blades With Seals
Up to 1000 FPM
3 in-lb. per square foot
4 in-lb. per square foot
5 in-lb. per square foot
7 in-lb. per square foot
1000 to 2500 FPM
4.5 in-lb. per square foot
6 in-lb. per square foot
7.5 in-lb. per square foot
10.5 in-lb. per square foot
2500 to 3000 FPM
6 in-lb. per square foot
8 in-lb. per square foot
10 in-lb. per square foot
14 in-lb. per square foot
general guidelines to calculate the required mini-
mum torque.