Schneider Electric MK-7100 Series, MK4-7100 Series Installation Instructions

Installation Instructions

MK/MK4-7100 Series

Pneumatic Damper Actuators

MK-7100 Series
MK4-7100 Series

Pneumatic Damper Actuators

General Instructions

Application

Proportional pneumatic actuator with 20 in. (129 cm)
effective area used to control damper and air valves in
heating, ventilating, and air conditioning systems.

Features

• Rugged cast aluminum body.

• Completely enclosed spring.

• Long lasting rolling diaphragms.

• Heavy duty mounting plate included.

Applicable Literature

• Environmental Controls Cross-Reference Guide,

F-23638

• Environmental Controls Reference Manual,

F-21683

• Pneumatic Products Catalog, F-27383

• AK-42309-500 Positive Positioning Pneumatic Relay,

F-22909

© 2017 Schneider Elec tric. A ll righ ts rese rve d. All tr ademar ks are ow ned by Schneider Elect ric Industri es SAS or its af filiat ed companies. August , 2017 tc
Docume nt Number: F-15221-11

SPECIFICATIONS

Installation Instructions

Construction

Housing: Die cast aluminum.
Diaphragm: Replaceable beaded molded neoprene.
Mounting: Any position.
Dimensions of Actuator: 17-5/8 x 7-3/4 x 7-5/8 in. (448 x 197 x 194 mm).

Mechanical

Stroke: Nominal 4-1/2 in. (114 mm), adjustable 4 to 5 in. (102 to 127 mm). Nominal
Damper Area: Actuator sizing should be done in accordance with damper

manufacturer’s specifications.

Start Point: Adjustable, see Table-1.
Spring: Retracts actuator crank arm on loss of air pressure.
Maximum air pressure: 30 psig (207 kPa).

Environment

Ambient Temperature Limits:

Shipping, -40 to 160°F (-40 to 71°C).

Operating, -20 to 160°F (-29 to 71°C).

Air Connections: 1/8” FNPT.
Air Connections (MK4-7100 Series only): Barbed fittings for 1/4” OD poly tube.

Table-1 Model Chart for Actuators.

Maximum Force

Stroke

TAC

Model No.

Nominal

Operating

Range

Starting

Pressure

Adjustable

Based on

1.5 psi

Pressure to

Actuator

15 psi

Supply

Dual Press.

System

psi psi lb. lb. lb. lb. lb. -in. lb. -in. lb. -in.

MK-7101
MK4-7101

MK-7121

MK4-7121

a

Factory installed positive positioner (AK-42309-500) start point adjustable 1 to 12 psi (7 to 83 kPa) with span adjustable 2 to 13 psi (14 to 90 kPa).

b

Nominal torque for actuators without positioner is based on 1.5 psi (10 kPa) pressure change at the actuator.

c

Force and torques based on factory set stroke and starting pressure.

d

Adjust pressure reducing valve so that listed pressures are available at the actuator.

3 to 8 3 ± 0.5 30 110 140 240 67.5

a

8 to 13 8 ± 0.5 130 10 40 140 22.5

a

c

Power Stroke

15 psi

Supply

Single

ress.

P

d

System

20 psi

Supply

Single or

Dual Press.

System

d

Proportional Control

15 psi

Supply

Dual Press.

System

Nominal Torque

15 psi

Supply

Single
Press.

System

67.5 67.5

90 293

Accessories

AK-42309-500 Positive positioner and linkage (do not use with MK2-71X1; positive

positioner does not meet temperature rating of MK2-71X1)
AM-301 90° angle mounting bracket
AM-530

AM-532 Frame mounting kit
AM-538 Actuator brace kit
AM-542 Rod end connector for 5/16 in. (10 mm) rod
AM-543 Actuator shaft extension
Tool-95 Pneumatic calibration tool kit

a

Crank arm for 1/2 in. diameter damper shaft holes for 4-1/2 in.

stroke

b

d

b

cReturn

20 psi

Supply

Single or

Dual Press.

System

d

a

Required to connect damper actuator to damper shaft.

b

Maximum length of 5/16 in. (10 mm) rod which can be used with AM-542, 15 in. (381 mm).

August , 2017 tc © 2017 Schneider Elec tric. A ll righ ts rese rve d. All tr ademar ks are ow ned by Schneider Elect ric Industri es SAS or its af filiat ed companies.

Document Number: F-15221-11

Installation Instructions

INSTALLATION

Inspection

Requirements

MOUNTING

Preparing Damper for
Frame Mounting of Actuator

Inspect the package for damage. If damaged, notify the appropriate carrier immediately. If
undamaged, open the package and inspect the device for obvious damage. Return
damaged products.

• Piping diagrams

• Training: Installer must be a qualified, experienced technician

• Appropriate accessories

Caution:

• Do not exceed the ratings of the device(s).

• Avoid locations where excessive moisture, corrosive fumes, or vibration is present.

Refer to Figure-16 for mounting hole locations and mounted actuator dimensions. Refer to
Figure-1, Figure-2, and Figure-3 for preparing the damper for a typical bolt on bracket
mounting (AM-532).

2-1/4

Note:

Notched blade next to operating
blade is required for clearance of
clevis and leaf connector.

7" Damper Blade
and Smaller

Operating Blade

2"

Cut This
Portion Out

Taken From Inside Steel
Framing. Dimensions

4"

same for both left and
right hand mounting.

Center Line of
Operating Blade

Figure-1 Bracket Mounting for Dampers with Blades 7” or Smaller.

Damper
Frame

© 2017 Schneider Elec tric. A ll righ ts rese rve d. All tr ademar ks are ow ned by Schneider Elect ric Industri es SAS or its af filiat ed companies. August , 2017 tc
Docume nt Number: F-15221-11

Damper Frame

Width 1" Min.

Operating Blade

Mounting Holes

Closed Damper

Installation Instructions

3/8"

1-1/4"

9" Damper
Blade

Leaf Connector

for Normally

Leaf Connector
Mounting Holes
for Normally
Open Damper

7/32" Dia. Hole for

(4) #14, 3/4" Type

2-5/16"

2-5/16"

"A"

1"

3-3/4"

7/32" Dia.
Hole (2)

3-1/4"

1-3/4"1"

Center Line
of Actuator

4-1/2"

1-1/4"

5"

Damper
Frame

Center Line of

Figure-2 Mounting Dimensions for Bolt-on Bracket, and Leaf Connector.

Damper
Frame

(4) #14, 3/4" Type
"A"

8-1/2" from
Center Line

Damper Blade

Mount bracket Flush to
1/16 from Edge

Minimum Width of Frame
for Bolt-On Bracket 1"

of Operating
Blade

Figure-3 Typical Bolt-on Bracket Mounting.

August , 2017 tc © 2017 Schneider Elec tric. A ll righ ts rese rve d. All tr ademar ks are ow ned by Schneider Elect ric Industri es SAS or its af filiat ed companies.

Document Number: F-15221-11