Submittal Sheet

ManualsBrandsHoneywell ManualsDampers24 Vac Modulating Spring return-foot mounted motor, CW

CONTENTS

Specifications ................................................. 2

Ordering Information ..................................... 2

Installation ..................................................... 5

Settings and Adjustments.............................. 18

Operation ..................................................... 19

Checkout....................................................... 20

M6415, M7405, M7415, M8405,

M8415 Damper Actuators

M6415, M7405, M7415, M8405 and M8415

25 lb-in. spring return damper actuators pro-

vide two-position, three-position, floating, or

modulating control of economizer systems, ven-

tilation dampers and combustion air dampers

used in residential or commercial HVAC

equipment.

■ M6415 Damper Actuator provides spdt floating

control of economizer dampers from Direct Digi-

tal Control (DDC) Systems.

■ M7405A Damper Actuator provides modulating

control of economizer dampers from Direct Digi-

tal Control Signal. Use with Programmable Com-

mercial Thermostats, either the T7400/W7401

Standard or T7400/W7411 Heat Pump System.

■ M7415 Damper Actuator provides modulating

control of economizer dampers from a thermistor

mixed-air or discharge sensor to maintain 56° F

air temperature.

■ M8405A Damper Actuator provides three-posi-

tion control: closed, adjustable mid-position, and

open.

■ M8415 Damper Actuator provides two-position

control: open and closed.

■ Quiet, high efficiency drive motor.

■ High impact, glass-fiber reinforced plastic case

is rugged, lightweight and corrosion resistant.

Summary of content (20 pages)

PAGE 1
M6415, M7405, M7415, M8405, M8415 Damper Actuators M6415, M7405, M7415, M8405 and M8415 25 lb-in. spring return damper actuators provide two-position, three-position, floating, or modulating control of economizer systems, ventilation dampers and combustion air dampers used in residential or commercial HVAC equipment. ■ M6415 Damper Actuator provides spdt floating control of economizer dampers from Direct Digital Control (DDC) Systems.
PAGE 2
M6415, M7405, M7415, M8405, M8415 SPECIFICATIONS • ORDERING INFORMATION Specifications MODELS: Power (Vac) Torque Open Rotation Spring (shaft end Return (shaft view) end view) Voltage (Vac) 50/60 Hz (drive) (hold) M6415Aa,b 24 7 3 90 90 25 2.8 ccw cw M6415B a,b 24 7 3 90 90 25 2.8 cw ccw M6415C a,b,c 24 7 3 90 90 25 2.8 ccw cw M6415Da,bc 24 7 3 90 90 25 2.8 cw ccw M7405Ab,d 24 8 5 90 90 25 2.8 ccw cw M7415Ab,d 24 8 5 90 90 25 2.
PAGE 3
M6415, M7405, M7415, M8405, M8415 SPECIFICATIONS Fig. 1—M6415, M7405, M7415, M8405, M8415 Damper Actuator dimensions in in. [mm]. 4-1/2 (114) 1/4 (6) 1-3/8 (35) 4-1/32 (102) 4-1/2 (114) 4-1/2 (114) 3-1/8 (79) 5 (127) 7/16 (11) 2-1/4 (57) 3-1/2 (89) 1-1/4 (32) 5-3/16 (132) TOP VIEW SIDE VIEW POWER END VIEW M3851 Fig. 2—Limits of crank arm rotation. MAXIMUM OPEN POSITION MAXIMUM CLOSED POSITION 1 MOTOR MOUNTING SURFACE 1 CRANK ARM FIELD ADJUSTABLE IN 7.5 DEGREE INCREMENTS.
PAGE 4
M6415, M7405, M7415, M8405, M8415 SPECIFICATIONS ACCESSORIES: 1. 1. 4074EHB Screw Terminal Adapter—converts quick-connect terminals to screw terminals. Adapter can be used with or without 7640QF Terminal Enclosure. M3858 2. 2. 7640QF Terminal Enclosure—provides wiring enclosure for electrical terminal connections. Enclosure can be used with or without 40784EHB Screw Terminal Adapter. Bag assembly includes: terminal housing, cover plate and mounting screws. M3855 3.
PAGE 5
M6415, M7405, M7415, M8405, M8415 SPECIFICATIONS • INSTALLATION ACCESSORIES (Continued): 7. 7. W7459 Solid State Logic Module used with C7400 Solid State Enthalpy Sensor. M3849 8. 8. Q298B Linkage Hardware—enables linking the actuator to an additional damper. Consists of two crank arm assemblies, two ball joint assemblies, and variable length push rods (in 10, 16, or 24 inch lengths) M3867 9. 10. a.
PAGE 6
M6415, M7405, M7415, M8405, M8415 INSTALLATION LOCATION AND MOUNTING Location Locate actuator as close as possible to the equipment to be controlled. Refer to Fig. 1 for mounting dimensions. IMPORTANT: Position crank arm on actuator hub so that crank arm does not strike actuator mounting surface during any portion of full stroke. See Fig. 2 on page 3. WIRING Disconnect power supply before connecting wiring to prevent electrical shock or equipment damage.
PAGE 7
M6415, M7405, M7415, M8405, M8415 INSTALLATION Fig. 4—Two M7405A Damper Actuators connected in parallel in T7400/W7401 HVAC system.
PAGE 8
M6415, M7405, M7415, M8405, M8415 INSTALLATION Fig. 5—M7415 Damper Actuator connected in single-stage cooling system with staging relay.
PAGE 9
M6415, M7405, M7415, M8405, M8415 INSTALLATION Fig. 6—M7415 Damper Actuator connected in two-stage cooling system with cooling relay.
PAGE 10
M6415, M7405, M7415, M8405, M8415 INSTALLATION Fig. 7—M7415 Damper Actuator and T7400/W7411 with separate transformer in two-stage heating/twostage cooling system.
PAGE 11
M6415, M7405, M7415, M8405, M8415 INSTALLATION Fig. 8—M8405A Damper Actuator connected in single-stage cooling system. 2 M8405A ECONOMIZER R D W T675/T6031 MIXED AIR CONTROL 55ß F SETPOINT S6005 TIMER OCCUPIED 3 BLUE 3 2 MIN C 1 RED 4 SW SET X D 1K RELAY H205 ENTHALPY CONTROL "A" SETPOINT MAX T APPLY 24 VAC T-X FOR MIN POSN. T-D FOR MAX POSN.
PAGE 12
M6415, M7405, M7415, M8405, M8415 INSTALLATION Fig. 9—M8405A Damper Actuator connected in two-stage cooling system. 2 M8405A M8405 3 BLUE R D W T675/T6031 MIXED AIR CONTROL 55ß F SETPOINT S6005 TIMER T X UNOCCUPIED MAX T APPLY 24 VAC T-X FOR MIN POSN. T-D FOR MAX POSN.
PAGE 13
M6415, M7405, M7415, M8405, M8415 INSTALLATION Fig. 10—M7415A Damper Actuator used in one-stage cooling system with differential enthalpy changeover and with W7459A Economizer.
PAGE 14
M6415, M7405, M7415, M8405, M8415 INSTALLATION Fig. 11—M7405A Damper Actuator used in two-stage cooling system with single enthalpy changeover and with W7459B Economizer.
PAGE 15
M6415, M7405, M7415, M8405, M8415 INSTALLATION Fig. 12—Two parallel drive M7405A Damper Actuators used in two-stage cooling system with single enthalpy changeover and with W7459B Economizer.
PAGE 16
M6415, M7405, M7415, M8405, M8415 INSTALLATION Fig. 13—M8405A Damper Actuator used in two-stage cooling system with single enthalpy changeover and with W7459C Economizer.
PAGE 17
M6415, M7405, M7415, M8405, M8415 INSTALLATION Fig. 14—Three M7415A,B Damper Actuators connected in parallel. T M7415 CONTROL MOTOR T1 TR L1 (HOT) TR1 L2 2 5 C7150B P1 24 Vac L1 (HOT) 4 TR L2 TR1 1 2 CW 1 P 3 Fig. 16—M6415 Damper Actuator used with spdt floating controller. CCW 250 OHMS T M7415 CONTROL MOTOR T1 2 5 P1 SERIES 60 FLOATING CONTROLLER 4 1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. 2 DO NOT JUMPER POWER ACROSS TR1, CW, AND CCW.
PAGE 18
M6415, M7405, M7415, M8405, M8415 INSTALLATION • SETTINGS AND ADJUSTMENTS Fig. 19—M8415A Damper Actuator twoposition wiring connections. Fig. 20—M8405 Damper Actuator threeposition wiring connections. M8415 M8405 CONTROLLER TR M8415 MAX 24 Vac 24 Vac SW SET TR1 TR1 T SW SET N.O. MIN N. O. AUX SW N. C. COM AUXILIARY EQUIPMENT N.C. T MIN MAX TR 24 VAC L1 1 (HOT) L2 X D SPST LOW VOLTAGE CONTROLLER X D AUXILIARY SWITCH COM 1 M3859 POWER SUPPLY.
PAGE 19
M6415, M7405, M7415, M8405, M8415 OPERATION Operation air until the temperature returns to the 50° to 56° F range. If the mixed or discharge air temperature is below 50° F, the actuator will proportion closed, shutting the outdoor air damper until the temperature returns to the 50° to 56° F range. During the occupied period, the actuator will not close past the minimum position. If the fully open M7415 Actuator cannot satisfy the space demand, mechanical cooling is sequenced on.
PAGE 20
M6415, M7405, M7415, M8405, M8415 CHECKOUT Checkout Operate the actuator through its complete open-close stroke. If necessary, release one of the previously tightened linkage connections to prevent damage. Check for proper operation, making sure that the linkage does not bind and that the actuator travels smoothly throughout its cycle from fully open to fully closed. Tables 1 to 4 describe how to drive these actuators fully open and fully closed (with power connected).