Johnson Controls M9204-B 2Z Series User manual

M9204-Bxx-2(Z) Series On/Off Electric Spring Return Actuators
Installation Guide
1
Applications
The M9204-Bxx-2(Z) Series On/Off Electric Spring Return Actuators are direct-mount actuators that operate on
AC 24 V power at 50/60 Hz, DC 24 V power, or AC 85 to 264 V power at 50/60 Hz. These bidirectional actuators
do not require a damper linkage, and are easily installed on round shafts from
1/4 to 1/2 in. (6 to 12 mm) or square shafts from
1/4 to 5/16 in. (6 to 8 mm) using the standard shaft clamp included with the actuator.
A single M9204-Bxx-2(Z) Series On/Off Electric Spring Return Actuator provides 35 lb·in. (4 N·m) running and
spring return torque. An integral line voltage auxiliary switch, available only on the M9204-xxB-2(Z) models,
indicates end-stop position, or performs switching functions within the selected rotation range.
Installation
The M9204-Bxx-2(Z) Series On/Off Electric Spring Return Actuators mount directly to the surface in any
convenient orientation using two No. M3.5 x 9.5 mm self-drilling sheet metal screws and the anti-rotation bracket
(parts included with the actuator). No additional linkages or couplers are required. Electrical connections are
color-coded and identified with numbers permanently marked on the actuator cable. A tag on the actuator cable
identifies the electrical connections and wiring details are included on the actuator housing.
Parts included
• M9204-Bxx-2(Z) actuator
• M9203-603 adjustable stop kit
• M9000-604 anti-rotation bracket with two No. M3.5 x 9.5 mm, pan-head, cross-recessed (Phillips), self-drilling
and self-tapping screws
IMPORTANT: Use this M9204-Bxx-2(Z) Series
On/Off Electric Spring Return Actuator only to control equipment under normal operating conditions. Where
failure or malfunction of the actuator could lead to personal injury or property damage to the controlled
equipment or other property, additional precautions must be designed into the control system. Incorporate and
maintain other devices, such as supervisory or alarm systems or safety or limit controls, intended to warn of or
protect against failure or malfunction of the actuator.
IMPORTANT : Utiliser ce M9204-Bxx-2(Z) Series On/Off Electric Spring Return Actuator uniquement pour
commander des équipements dans des conditions normales de fonctionnement. Lorsqu'une défaillance ou un
dysfonctionnement du actuator risque de provoquer des blessures ou d'endommager l'équipement contrôlé ou
un autre équipement, la conception du système de contrôle doit intégrer des dispositifs de protection
supplémentaires. Veiller dans ce cas à intégrer de façon permanente d'autres dispositifs, tels que des systèmes
de supervision ou d'alarme, ou des dispositifs de sécurité ou de limitation, ayant une fonction d'avertissement ou
de protection en cas de défaillance ou de dysfonctionnement du actuator.
IMPORTANT: Do not install or use this M9204-Bxx-2 Series On/Off Electric Spring Return Actuator in or near
environments where corrosive substances or vapors could be present. Exposure of the electric actuator to
corrosive environments may damage the internal components of the device, and will void the warranty.
M9204-Bxx-2(Z) Series On/Off Electric Spring Return Actuators
Installation Guide
M9204-BUA-2, M9204-BUB-2,
M9204-BGA-2, M9204-BGB-2
M9204-BUA-2Z, M9204-BUB-2Z
Part No. 34-1791-24, Rev. G
December 2020
*34179124G*

M9204-Bxx-2(Z) Series On/Off Electric Spring Return Actuators Installation Guide
2
Special tools needed
• 10 mm wrench/socket
• drill with Phillips bit, driver size 1
Dimensions
Figure 1: M9204-Bxx-2 Series On/Off Electric Spring Return Actuator dimensions, in. (mm)
10 30
90
50
70
10 30
90
50
70
1/4 (6.5) Slot Width
5/16 (8) Slot Length
4-15/64
(107.5)
25/32
(20)
3-15/16
(82)
15/64
(6)
2-1/4
(57.5)
45/64
(18)
1-1/8
(28.7)
1-35/64
(39.2)
47/64
(18.7)
FIG:M9203_Bxx_ dim
4-55/64
(123.6)
6-3/8
(162)

M9204-Bxx-2(Z) Series On/Off Electric Spring Return Actuators Installation Guide
3
Accessories
Mounting
The M9204-Bxx-2(Z) Series On/Off Electric Spring Return Actuators can be easily installed on dampers with round
shaftsfrom1/4to1/2in.(6to12mm)orsquareshaftsfrom 1/4 to 5/16 in. (6 to 8 mm) using the standard shaft
coupler included with the actuator. If the damper shaft extends less than 3.31 in. (84 mm), see the Removable
Coupler section for further instructions. If the damper shaft extends less than 0.79 in. (20 mm), install a shaft
extension recommended by the damper manufacturer.
Table 1: Accessories and replacement parts (order separately)
Code number Description
DMPR-KC003 7 in. (178 mm) blade pin extension (without bracket) for Johnson Controls® direct-mount damper
applications (quantity 1)
Note: Available with damper and may be ordered separately
M9000-322 Weathershield kit for damper application of M9204, M9308, and M9310 Series Electric Actuators (quantity
1)
M9000-400 Jackshaft linkage adapter kit (quantity 1)
M9000-560 Ball valve linkage kit for applying M9104, M9204, and M9208 Series Electric Actuators to VG1000 Series
Valves (quantity 1)
M9000-561 Thermal barrier kit for M9000-560 Ball Valve Linkage. Extends M(VA)9104, M(VA)9203, and M(VA)9208
Series Electric Spring Return Actuators applications to include low pressure steam (quantity 1)
M9000-604 Replacement anti-rotation bracket kit for M9204, M9208, M9220, M9308, M9310, M9320, and M9335
Series Electric Actuators (quantity 1)
M9000-606 Position indicator for damper applications (quantity 5)
M9000-607 Position indicator for VG1000 Series Ball Valve applications (quantity 5)
M9203-100 Remote mounting kit with crankarm kit (quantity 1)
M9203-110 Universal mounting kit without crankarm kit (quantity 1)
M9203-115 Universal mounting kit with crankarm kit (quantity 1)
M9203-150 Crankarm kit (quantity 1)
M9203-250 Remote mounting kit with crankarm kit and damper linkage for D1300 dampers (quantity 1)
M9203-601 Replacement standard coupler kit (with retainer) for mounting M9204 Series Electric Spring Return
Actuators (quantity 1)
M9203-602 Replacement retainer for M9204 Series Electric Spring Return Actuators (quantity 5)
M9203-603 Adjustable stop kit for M9204 Series Electric Spring Return Actuators (quantity 1)

M9204-Bxx-2(Z) Series On/Off Electric Spring Return Actuators Installation Guide
4
Counterclockwise (CCW) spring return direction – clockwise (CW) powered operation
For CCW spring return direction, mount the actuator to the damper shaft so that side A of the actuator is away from
the damper as illustrated in Figure 2. With power applied, the actuator drives CW from the 0° position and spring
returns CCW.
Clockwise (CW) spring return direction – counterclockwise (CCW) powered operation
For CW spring return direction, mount the actuator to the damper shaft so that side B of the actuator is away from
the damper as illustrated in Figure 3. With power applied, the actuator drives CCW from the 0° position and spring
returns CW.
Removable coupler
If the damper shaft extends less than 3.31 in. (84 mm), mount the coupler on the face of the actuator closest to the
damper.
Figure 2: Actuator side A
30
90
50
70
30
90
50
70
10
FIG:M9203_Bxx_A
Figure 3: Actuator side B
90
70
10
50 30
FIG: M920 3_Bx x_B

M9204-Bxx-2(Z) Series On/Off Electric Spring Return Actuators Installation Guide
5
If the damper shaft extends less than 0.79 in. (20 mm), a shaft extension is required to mount the actuator.
To change the coupler’s position, see Figure 4 and proceed as follows:
1. Mount the coupler on either Side A or Side B of the actuator as determined by the shaft length.
2. Snap the locking clip securely into the coupler retention groove to retain the coupler.
Mounting the actuator
To mount the actuator, proceed as follows:
1. See the dimensions in Figure 5 and Table 2 to ensure the correct positioning of the anti-rotation bracket.
2. Bend or cut the anti-rotation bracket to fit the damper frame or duct as illustrated in Figure 6.
Note: The anti-rotation bracket can be bent to fit a round damper.
3. Mark or drill mounting holes in the damper frame or duct using the anti-rotation bracket as a guide (based on
the measurements obtained in Table 2 and Figure 5).
Table 2: Dimensions from anti-rotation bracket to shaft center
Shaft diameter,
in. (mm)
Dimension A,
in. (mm)
Dimension B,
in. (mm)
1/4 to 1/2 (6 to 12) 4-27/32 (123) 3-5/8 (92)
IMPORTANT: The tab on the anti-rotation bracket must fit midpoint in the actuator slot. Positioning the tab
midpoint in the slot prevents actuator binding and premature wear, and makes actuator removal easier.
Figure 4: Changing the coupler position
FIG:ex p_c plr
Figure 5: Positioning the anti-rotation bracket
30
90
50
70
30
90
50
70
30
90
50
70
30
90
50
70
10 10
FIG:M9203_ Bxx_ brkt
DIM. A
DIM. B

M9204-Bxx-2(Z) Series On/Off Electric Spring Return Actuators Installation Guide
6
4. Secure the anti-rotation bracket to the damper frame or duct using the two No. M3.5 x 9.5 mm
self-drilling sheet metal screws provided.
5. Slide the actuator onto the damper shaft, and position the anti-rotation bracket tab into the slot at the bottom of
the actuator as illustrated in Figure 6.
6. Rotate the damper blade(s) to the desired position if the power is lost.
7. Hold the actuator perpendicular to the damper shaft. Evenly hand-tighten each nut on the coupler U-bolt, then
torque the coupler U-bolt nuts to 100 to 125 lb·in. (11 to 14 N·m).
8. Apply power long enough for the actuator to travel a full stroke. Verify that the actuator rotates freely
throughout the range.
Limiting rotation range using M9203-603 Adjustable Stop Kit
The actuator is factory set for 95° rotation, and its range is limited in 5° increments to a minimum of 35°. A stroke-
limiting stop can be attached in the field to the shaft coupler side of the actuator to reduce the rotation range.
Attaching the stroke-limiting stop in the furthest mounting position reduces the rotation range of the actuator by 5°.
Each progressive mounting position reduces the rotation range an additional 5°.
1. Check that the damper blade is visible or its position is permanently marked on the end of the damper shaft, as
illustrated in Figure 7.
IMPORTANT: Do not overtighten the mounting screws to avoid stripping the threads. Be certain that the tab on
the anti-rotation bracket remains properly positioned in the slot on the actuator, and that the actuator remains
parallel to the mounting surface.
Figure 6: Anti-rotation mounting bracket
FIG:M920 3_ Anti-Rotn_Mntg_Brkt_Posn
2-1/4
(57.5)
3-1/4
(82.5)
Anti-Rotation Bracket
Damper Frame
Self-Drilling Sheet Metal Screws (2)
Figure 7: Damper position icons
FIG:dampers

M9204-Bxx-2(Z) Series On/Off Electric Spring Return Actuators Installation Guide
7
2. Position the stroke-limiting stop in the serrated slot with its leading edge at the scale position matching the
desired stroke.
3. The product label marks hole positions for the M3-0.5 x 8 mm self-tapping screw provided with the adjustable
stop kit. Drive the screw through the slot in the adjustable stop and into the actuator face over a marked hole
position. (See Figure 8.)
Note: The minimum rotation range is 35°.
Wiring
See Figure 9 and Figure 10 to wire the applicable M9204-Bxx-2(Z) Series model.
Figure 8: Limiting rotation range
FIG:strk_limit
Figure 9: Control wiring
AC 85...264 V 50/60 Hz
L1N
WHT BLK
2
1
AC 24 V 50/60
DC 24 V
RED
BLK
2
1
+
-
~
FIG:M9203Bxx2_wiring

M9204-Bxx-2(Z) Series On/Off Electric Spring Return Actuators Installation Guide
8
!
WARNING: Risk of Electric Shock.
Disconnect or isolate all power supplies before making electrical connections. More than one
disconnection or isolation may be required to completely de-energize equipment. Contact with
components carrying hazardous voltage can cause electric shock and may result in severe personal
injury or death.
AVERTISSEMENT : Risque de décharge électrique.
Débrancher ou isoler toute alimentation avant de réaliser un branchement électrique. Plusieurs
isolations et débranchements sont peut-être nécessaires pour -couper entièrement l'alimentation de
l'équipement. Tout contact avec des composants conducteurs de tensions dangereuses risque
d'entraîner une décharge électrique et de provoquer des blessures graves, voire mortelles.
!
CAUTION: Risk of Property Damage.
Do not apply power to the system before checking all wiring connections. Short circuited or improperly
connected wires may result in permanent damage to the equipment.
MISE EN GARDE : Risque de dégâts matériels.
Ne pas mettre le système sous tension avant d'avoir vérifié tous les raccords de câblage. Des fils
formant un court-circuit ou connectés de façon incorrecte risquent d'endommager irrémédiablement
l'équipement.
!
CAUTION: Risk of Property Damage.
Insulate and secure each unused wire lead before applying power to the actuator. Failure to insulate
and secure each unused wire lead may result in property damage.
MISE EN GARDE : Risque de dégâts matériels.
Isoler et protéger chaque fil non utilisé avant de mettre l'actuator sous tension. Le non-respect de cette
obligation d'isolation et de protection de chaque fil non utilisé risque d'entraîner des dégâts matériels.
IMPORTANT: Make all wiring connections in accordance with the National Electrical Code and local
regulations. Use proper Electrostatic Discharge (ESD) precautions during installation and servicing to avoid
damaging the actuator’s electronic circuits.
Figure 10: Auxiliary switch wiring diagram
COM NC NO
21
21
23
22
21 22 23
BLK/
RED
BLK/
BLU
BLK/
GRY
S1
FIG:aux_wring

M9204-Bxx-2(Z) Series On/Off Electric Spring Return Actuators Installation Guide
9
Using conduit
All M9204-xxx-2(Z) Series Actuators accept 1/2 in. threaded electrician’s fittings.
1. Feed the actuator cables through the field supplied electrician’s fittings and conduit.
2. Thread the electrician’s fitting into the actuator and secure the conduit to the fitting in accordance with local
building code requirements.
Setup and adjustments
Auxiliary switch (M9204-xxB-x models)
The M9204-xxB-x models include one integral auxiliary switch with a switch adjuster accessible on either face of
the actuator (see Figure 2 and Figure 3). The factory setting for the Auxiliary Switch is 11° closing (relative to the
0 to 90° rotation range as printed on the product label). See the Technical specifications table for the auxiliary
switch ratings.
The switch point is continuously adjustable through the actuator’s rotation range. For the most accurate switch
positioning, see Figure 12 and use the method in the following example.
To change the switch point, proceed as follows:
1. Position the actuator in the full spring return position.
Note: The switch is factory set to trip when the actuator reaches the 11° position.
!
WARNING: Risk of Electric Shock and Property Damage.
Insulate and secure each unused wire lead before applying power to the actuator. Failure to insulate
and secure each unused wire lead may result in property damage, electric shock, and severe personal
injury or death.
AVERTISSEMENT : Risque de décharge électrique et dégâts matériels.
Isoler et protéger chaque fil non utilisé avant de mettre l'actuator sous tension. Le non-respect de cette
obligation d'isolation et de protection de chaque fil non utilisé risque d'entraîner des dégâts matériels,
des décharges électriques et des blessures graves, voire mortelles.
Figure 11: Adding flexible metal conduit
FIG:add_cndt

M9204-Bxx-2(Z) Series On/Off Electric Spring Return Actuators Installation Guide
10
2. Rotate the switch adjuster until it points to the desired switch point.
3. Connect the Auxiliary Switch to a power source or an ohmmeter and apply power to the actuator. The actuator
moves to the fully open position and holds while power is applied.
4. Observe the switch point. If required, repeat Step 1 through Step 3.
Repair information
A number of replacement parts are available; see Table 1 for more details. If an M9204-Bxx-2(Z) Series
On/Off Electric Spring Return Actuator fails to operate within its specifications, replace the unit. For a replacement
electric actuator, contact the nearest Johnson Controls representative.
Figure 12: Switch trip point settings
30
90
50
70
30
90
50
70
10
Switch Adjuster
FIG:swtch_sttng

M9204-Bxx-2(Z) Series On/Off Electric Spring Return Actuators Installation Guide
11
Technical specifications
M9204-Bxx-2(Z) Series On/Off Electric Spring Return Actuators (Part 1 of 2 )
Power
requirements
-BGx-2 models AC 24 V (AC 19.2 V to 28.8 V) at 50/60 Hz: Class 2 (North America) or Safety
Extra-Low Voltage (SELV) (Europe), 5 VA running, 1.6 VA holding position
DC 24 V (DC 21.6 V to 28.8 V): Class 2 (North America) or SELV (Europe),
2.8 W running, 0.8 W holding position
Minimum transformer size: 6 VA per actuator
-BUx-2 models AC 100 to 240 V (AC 85 V to 264 V) at 50/60 Hz: 0.06 A running, 0.02 A
holding position
-BUx-2Z models AC 100 to 240 V (AC 85 V to 264 V) at 50/60 Hz: 0.08 A running, 0.02 A
holding position
Auxiliary switch
rating
-xxB models One single-pole, double-throw (SPDT), double-insulated switch with silver
contacts:
AC 24 V, 50 VA pilot duty
AC 120 V, 5.8 A resistive, 1/4 hp, 275 VA pilot duty
AC 240 V, 5.0 A resistive, 1/4 hp, 275 VA pilot duty
Spring return Direction is selectable with mounting position of actuator:
Actuator side A is away from damper or valve: CCW spring return
Actuator side B is away from damper or valve: CW spring return
Rated torque Power on (running) 35 lb·in. (4 N·m) all operating temperatures
Power off (spring
returning)
35 lb·in. (4 N·m) all operating temperatures
Rotation range Maximum full stroke: 95°
Adjustable stop: 35 to 95° maximum position
Rotation time
for 90 degrees of
travel
Power on (running)
-Bxx-2 models
53 to 71 seconds for 0 to 35 lb·in. (4 N·m) load, at room temperature
60 seconds nominal at full rated load (0.25 rpm)
Power on (running)
-BUx-2Z models
24 to 28 seconds for 0 to 35 lb·in. (4 N·m) load, at room temperature
27 seconds nominal at full rated load (0.5 rpm)
Power off (spring
returning)
19 to 23 seconds for 0 to 35 lb·in. (4 N·m) load, at room temperature
22 seconds nominal at full rated load
28 seconds maximum with 35 lb·in. (4 N·m) load at -22°F (-30°C)
Life cycles 60,000 full-stroke cycles with 35 lb·in. (4 N·m) load
Audible noise
rating
Power on (running)
-Bxx-2 models
<36 dBA at 35 lb·in. (4 N·m) load, at a distance of 39-13/32 in. (1 m)
Power on (running)
-BUx-2Z models
<45 dBA at 35 lb·in. (4 N·m) load, at a distance of 39-13/32 in. (1 m)
Power on (holding) <20 dBA at a distance of 39-13/32 in. (1 m)
Power off (spring
returning)
<51 dBA at 35 lb·in. (4 N·m) load, at a distance of 39-13/32 in. (1 m)
Electrical
connections
Actuator
(all models)
48 in. (1.2 m) UL 758 type AWM halogen-free cable with 18 AWG (0.85 mm²)
conductors and 0.25 in. (6 mm) ferrule ends
Auxiliary switch
(-xxB models)
48 in. (1.2 m) UL 758 type AWM halogen-free cable with 18 AWG (0.85 mm²)
conductors and 0.25 in. (6 mm) ferrule ends
Conduit connections Integral 1/2 in. (13 mm) threaded conduit connector(s)
Mechanical
connections
Round shafts Range of sizes: 1/4 to 1/2 in. (6 to 12 mm)
Square shafts Range of sizes: 1/4 to 5/16 in. (6 to 8 mm)
Enclosure rating NEMA 2 (IP54) for all mounting orientations
Ambient conditions Standard operating -22 to 140°F (-30 to 60°C); 90% RH maximum, noncondensing
Storage -40 to 185°F (-40 to 85°C); 95% RH maximum, noncondensing

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© Copyright 2020 Johnson Controls. All rights reserved. Any unauthorized use or copying is strictly prohibited.
Building Technologies & Solutions
Headquarters: Milwaukee, Wisconsin, USA
Branch Offices: Principal Cities World-wide
12
Product warranty
This product is covered by a limited warranty, details of which can be found at www.johnsoncontrols.com/buildingswarranty.
Patents
Patents: http://jcipat.com
Single point of contact
APAC Europe NA/SA
JOHNSON CONTROLS
C/O CONTROLS PRODUCT MANAGEMENT
NO. 32 CHANGJIJANG RD NEW DISTRICT
WUXI JIANGSU PROVINCE 214028 - CHINA
JOHNSON CONTROLS
WESTENDHOF 3
45143 ESSEN
GERMANY
JOHNSON CONTROLS
507 E MICHIGAN ST
MILWAUKEE WI 53202
USA
Contact information
Contact your local branch office: www.johnsoncontrols.com/locations
Contact Johnson Controls: www.johnsoncontrols.com/contact-us
Dimensions 6.38 x 3.23 x 2.26 in. (162 x 82 x 57.5 mm)
Compliance United States UL Listed, CCN XAPX, File E27734; to UL 60730-1A: 2003-08, Ed. 3.1,
Automatic Electrical Controls for Household and Similar Use; and
UL 60730-2-14: 2002-02, Ed. 1, Part 2, Particular Requirements for Electric
Actuators. (Models: all)
Plenum Rated (UL 2043). Suitable for use in other environmental air space
(plenums) in accordance with Section 300.22 (C) of the National Electric
Code
Canada UL Listed, CCN XAPX7, File E27734; to UL 60730-1:02-CAN/CSA:
July 2002, 3rd Ed., Automatic Electrical Controls for Household and Similar
Use; and CSA C22.2 No. 24-93 Temperature Indicating and Regulating
Equipment (Models: all).
Europe CE Mark – Johnson Controls, declares that this product is in compliance with
the essential requirements and other relevant provisions of the
EMC Directive and Low Voltage Directive.
Australia and New
Zealand
RCM Mark, Australia/NZ Emissions Compliant (Models: all)
Shipping weight -BxA models: 2.0 lb (0.9 kg)
-BxB models: 2.4 lb (1.1 kg)
The performance specifications are nominal and conform to acceptable industry standards. For application at conditions beyond these
specifications, consult the local Johnson Controls office. Johnson Controls shall not be liable for damages resulting from misapplication or
misuse of its products.
M9204-Bxx-2(Z) Series On/Off Electric Spring Return Actuators (Part 2 of 2 )