Honeywell W7459A, M7415, C7150B, M8405 User Manual

Solid State Economizer System

(CONSISTING OF: C7046C DISCHARGE AIR SENSOR OR C7150B MIXED AIR SENSOR, C7400A

SOLID STATE ENTHALPY SENSOR

M8405 DAMPER ACTUATORS OR MODULATING DIRECT COUPLED ACTUATORS (MS7505),

T6031H THERMOSTAT AND W7459 OR W7212 SOLID STATE ECONOMIZER LOGIC MODULE)

C7650A SOLID STATE TEMPERATURE SENSOR, M7415

PRODUCT DATA

FEATURES

C7046C

M7415/M8405

C7150B

W7459A,C

W7212

C7400A/C7650A

T6031H

APPLICATION

The Solid State Economizer System provides an economical method of providing cooling air by incorporating outdoor air in the first stage of cooling in heating, ventilating and air conditioning (HVAC) systems. The Solid State Economizer System consists of the C7046C Discharge Air Sensor or C7150B Mixed Air Sensor, C7400A Solid State Enthalpy Sensor or C7650A Solid State Temperature Sensor, M7415 or M8405 Damper Actuators or Modulating Direct Coupled Actuators (MS7505), T6031H Thermostat and W7212 or W7459A,C Solid State Economizer Logic Module.

C7046C Discharge Air Sensors have probe lengths of 8 in. (203 mm) and nominal sensor resistance of 3000 ohms at 77°F (25°C).

• No setting or calibration required.

• Solid state components not affected by dust or dirt.

• Fast reacting.

• Rugged aluminum insertion probe.

C7150B Mixed Air Sensor is used with the W7212/W7459 Economizer Module to sense mixed or discharged air in rooftop packaged air conditioning equipment.

• No setting or calibration required.

C7400A Solid State Enthalpy Sensor and C7650A Solid State Temperature Sensors are used with the W7212/W7459 Solid State Economizer Logic Module to sense outdoor and return air enthalpy or temperature.

• C7400A senses and combines temperature and humidity (enthalpy) of outdoor air (heat index).

• C7650A senses temperature only.

• When enthalpy/temperature of outdoor air increases, the outdoor air damper closes to a preset minimum position.

• When enthalpy/temperature of outdoor air is low, the outdoor air damper opens to reduce the building cooling load.

• Additional economizer savings are achieved when two C7400A Solid State Enthalpy Sensors are connected to one Logic Module for differential enthalpy changeover control.

Contents

Application ........................................................................ 1

Features ........................................................................... 1

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

Specifications ................................................................... 3

Specifications: M7215 ...................................................... 4

Specifications: W7212A Logic Module ............................. 6

Installation: M7215, M7415, M8405 ................................. 7

Wiring: M7215, M7415, M8405 ........................................ 8

Operation and Checkout .................................................. 12

Settings and Adjustments ................................................. 14

Sequence of Operation .................................................... 16

Operation: W7212 ............................................................ 17

Settings and Adjustments: W7212 ................................... 18

Checkout and Troubleshooting ........................................ 19

Checkout and Troubleshooting: W7212 ........................... 31

63-2484-2

SOLID STATE ECONOMIZER SYSTEM

M7415 and M8405 Damper Actuators are 25 lb-in. spring return damper actuators that provide modulating or threeposition control of economizer systems on HVAC equipment.

• M7415 Damper Actuator provides modulating control of economizer dampers from a thermistor mixed-air or discharge sensor to maintain 56°F (13°C) air temperature.

• M8405A Damper Actuator provides three-position control: closed, adjustable mid-position, and open.

• W7459 logic modules may plug directly onto the M7415.

• High impact, glass-fiber reinforced, plastic case is rugged, lightweight and corrosion resistant.

M7215 Damper Motors provide 25 lb-in. torque with spring return and 2–10 Vdc modulating control of economizer systems on HVAC equipment.

• M7215 Damper Motors provide modulating control of economizer dampers from a 2–10 Vdc controller.

• W7212 logic module may plug directly onto the M7215.

T6031H Thermostat acts as changeover thermostat.

• Switches enclosed to resist effects of dust and moisture.

• Warmer–Cooler temperature scale.

• Sensing bulb installed in return air flow.

W7459A,C Solid State Economizer Logic Module used with C7400 Solid State Enthalpy Sensors and M7415 or M8405 Damper Actuators to proportion outdoor and return air dampers for economizer control in commercial HVAC equipment.

• Combine functions of solid state enthalpy changeover control, minimum damper position potentiometer (W7459A) and compressor staging relays.

• Optional differential enthalpy control provides greater economizer savings than single enthalpy control by selecting the most economical air for cooling.

• W7459A mounts on M7415 Damper Actuator and accepts inputs from C7150B Mixed Air Sensors, C7400 Solid State Enthalpy Sensors, C7046C Discharge Air Sensor, and optional remote minimum damper position potentiometer.

• W7459C mounts on M8405A Damper Actuator and accepts inputs from single pole single throw (spst) mixed or discharge air control and C7400 Solid State Enthalpy Sensors.

• Packages are designed to operate from the cooling space thermostat to provide a totally integrated control system.

• Enthalpy setpoint (A,B,C,D) located on W7459 Solid State Economizer Logic Module is used to select combination of air temperature and humidity that is suitable for free cooling.

• W7459A include built-in adjustable minimum damper position potentiometer that controls the amount of outdoor air admitted to meet minimum ventilation requirements; includes terminals for connecting optional remote minimum position potentiometer.

• LED on W7459 indicates free cooling is available when there is a call for cooling from the thermostat.

W7212A economizer logic module used with C7400 enthalpy sensors, M7215 or MS7505 damper actuators and C7232 CO

sensors to proportion outdoor and return air dampers

from economizer and demand control ventilation in commercial HVAC equipment.

• Operates from thermostat and DCV sensor to provide a totally integrated control system.

• Combines minimum and DCV maximum damper position potentiometers with compressor staging.

• Solid state enthalpy or dry bulb changeover control.

• Terminals included for switching between Occupied and Unoccupied operation.

• Maximum economizer savings is achieved with two (2) C7400 enthalpy sensors, one (1) W7212 economizer logic module, and one (1) C7232 CO differential enthalpy changeover and Demand Control Ventilation (DCV).

• LED indicates when free cooling is available.

• LED indicates when module is in DCV mode.

• LED indicates when exhaust fan contact is closed.

• W7213 is used with heat pump B terminal.

• W7214 is used with heat pump O terminal.

sensor using

ORDERING INFORMATION

When purchasing replacement and modernization products from your TRADELINE® wholesaler or distributor, refer to the TRADELINE® Catalog or price sheets for complete ordering number.

If you have additional questions, need further information, or would like to comment on our products or services, please write or phone:

1. Your local Honeywell Automation and Control Products Sales Office (check white pages of your phone directory).

2. Honeywell Customer Care

1885 Douglas Drive North

Minneapolis, Minnesota 55422-4386 In Canada—Honeywell Limited/Honeywell Limitée, 35 Dynamic Drive, Scarborough, Ontario M1V 4Z9. International Sales and Service Offices in all principal cities of the world. Manufacturing in Australia, Canada, Finland, France, Germany, Japan, Mexico, Netherlands, Spain, Taiwan, United Kingdom, U.S.A.

63-2484—2 2

SOLID STATE ECONOMIZER SYSTEM

MS7505 Spring Return Direct Coupled Actuator

The MS7505 Series Spring Return Direct Coupled Actuators (DCA) are control actuators that provide proportioning control for valves and dampers. They accept a voltage signal from an economizer to position a damper or valve at any chosen point between fully open and fully closed.

• Control for air damper applications with up to 12.5 sq ft assuming 3.5 in.-lb per sq ft of damper area, velocity independent.

• Brushless DC submotor with electronic stall protection.

• Patented self-centering shaft adapter.

• Access cover to facilitate connectivity.

• Metal housing with mechanical end limits.

• Field-installable auxiliary switches.

• Spring return direction field-selectable.

• Hub includes position indicator.

SPECIFICATIONS

IMPORTANT

The specifications given in this publication do not include normal manufacturing tolerances. Therefore, these units may not exactly match the specifications listed. Also, these products are tested and calibrated under closely controlled conditions and some minor differences in performance can be expected if these conditions are changed.

Mounting Arrangement:

Integral mounting flange that requires two no. 8 screws (not

provided).

Maximum Ambient Temperature:

250°F (121°C).

Operating Temperature Range:

40°F to 150°F (4°C to 66°C).

Wiring Connections:

6 in. (152 mm) leadwires.

Dimensions:

See Fig. 1.

C7150B Mixed Air Sensor

Used to sense mixed air in rooftop packaged air conditioning equipment.

Resistance/Temperature (NTC):

Nominal Resistance: 3000 ohms at 77°F (24°C). Nominal Sen-

sitivity: 70 ohms per degree F (124 ohms per degree C) at midrange.

Maximum Ambient Temperature:

250°F (121°C).

Operating Temperature Range:

-40°F to +110°F (-40°C to +44°C).

Dimensions:

See Fig. 2.

Models:

Specifications for each model are listed separately.

C7046 Discharge Air Sensors

Intended for use as a discharge sensor in rooftop applications.

Sensing Element:

Carbon type, thermistor-resistor element.

Performance Characteristics:

Reaction Time Constant with Air Approach Velocity of 8.33 ft/

sec (2.54 m/sec): 60 seconds.

Resistance/Temperature (NTC):

Nominal Resistance: 3000 ohms at 77°F (24°C). Nominal Sen-

sitivity: 70 ohms per degree F (124 ohms per degree C) at midrange.

7/8

(22)

1/4 (6) DIAMETER (2)

1-1/2 (38)

3/4 (19)

9/16 (14)

C7400A Solid State Enthalpy Sensor/C7650A Solid State Temperature Sensor

Senses enthalpy or temperature of outdoor and return air.

Temperature Sensing Element:

Thermistor.

Output Signal:

4 to 20 mA current signal; increases from 4 mA to 20 mA as

enthalpy decreases.

Ambient Operating Temperature Range:

-40°F to +125°F (-40°C to +52°C).

Approval:

Underwriters Laboratories Inc. Flammability Rating: UL94-5V.

Dimensions:

See Fig. 3.

1/2 (13) DIAMETER

IMMERSION LENGTH: 8 (203)

3/8 (10) DIAMETER

M9087

Fig. 1. Approximate dimensions of C7046C Air Temperature Sensor in in. (mm).

3 63-2484—2

SOLID STATE ECONOMIZER SYSTEM

3/4

(19)

Terminal Connections:

1/4 in. (6 mm) male quick connect terminals mounted on actua-

tor. Terminal arrangement is dependent on actuator model.

Ambient Operating Temperature Range:

-40°F to +125°F (-40°C to +52°C).

Voltage and Timing:

See Table 1.

3/16 (5) DIAMETER

(51)

2-1/2 (64)

M9084

Fig. 2. Approximate dimensions of C7150B Mixed/

Discharge Air Sensor in in. (mm).

5/16 (8)

3-5/32

(80)

2-3/4 (70)

Dimensions:

See Fig. 4.

Shaft:

Single-ended drive shaft with crank arm supplied.

Flammability Rating:

Underwriters Laboratories Inc. UL94-5V.

Approval:

Underwriters Laboratories Inc. Component Recognized: File

No. E4436, Guide No. XAPX2, Vol. 9, Section 1, 7-25-83.

SPECIFICATIONS: M7215

Models: ML7215: 25 lb-in. (2.8 Nm) torque, foot-mounted

spring-return damper motor with 2-10 Vdc feedback signal. Accepts 2-10 Vdc control signal.

Dimensions: See Fig. 4.

Electrical Ratings:

Supply Voltage: 24 ±6 Vac 50/60 Hz. Power Consumption: 24 Vac, 60 Hz: 8.7 VA. 24 Vac, 50 Hz: 8.4

VA.

Torque:

Lift and Hold: 25 lb-in. (2.8 Nm). Spring Return: 25 lb-in. (2.8

Nm). Breakaway: 40 lb-in. (4.5 Nm).

IMPORTANT

Never use motor continuously at the breakaway torque rating.

9/16 (14)

1 (25)

7/32

(6)

3-7/8 (96)

M9096

Fig. 3. Approximate dimensions of C7400A Solid State

Enthalpy Sensor/C7650A Solid State Temperature Sensor

in in. (mm).

M7415A, M8405A Damper Actuators

Provides control of economizer systems on HVAC equipment.

Actuator Rotation:

Closed position is the limit of clockwise rotation; open position is the limit of counterclockwise rotation as viewed from the shaft end of the motor.

Auxiliary Switch Rating (M8405A only):

24 Vac, 20 VA inrush, 20 VA run.

63-2484—2 4

NOTE: Breakaway torque available to overcome occasional

large loads such as a seized damper.

Stroke:

Travel: 90°. Timing:

Driving: 86 ±5 seconds. Spring Return: 13 ±5 seconds.

Motor Rotation (Viewed From Shaft End):

Closed Position: Limit of clockwise rotation. Open Position: Limit of counterclockwise rotation. Crank Arm Rotation Limits: See Fig. 8. Shipped with shaft in closed position.

Ambient Ratings:

Temperature:

Operating: -25°F to +125°F (-32°C to +52°C). Storage: -30°F to +150°F (-34°C to +66°C).

Humidity: 5 to 95 percent RH, noncondensing.

Terminal Connections: 1/4 in. (6 mm) quick-connect termi-

nals mounted on motor.

SOLID STATE ECONOMIZER SYSTEM

Shaft: Single-ended drive shaft with crank arm supplied.

Reliability:

Full-Stroke Cycles: 60,000. Repositions: 1,500,000.

4-1/2 (114)

4-1/32

7/16 (11)

(102)

4-1/2

(114)

2-1/4 (57)

3-1/2 (89)

5-3/16 (132)

TOP VIEW SIDE VIEW POWER END VIEW

1-1/4

(32)

(127)

4-1/2 (114)

Fig. 4. M7215, M7415A, and M8405A Damper Motor dimensions in in. (mm).

Table 1. M7415A/M7405A Actuator Specifications.

Power (Vac) Torque

Model Number

M7415A

M8405A

M7415B

M7215A

MS7505

b,c

b,d

b,c

a,b,c,e

Timing with 60 Hz power. Spring return. Modulating. Three-position with field adjustable minimum position control. Mounts directly on damper shaft.

50/60 Hz (Drive) (Hold)

24 8 5 90 90 25 2.8 ccw cw

24 7 3 90 90 25 2.8 ccw cw

24 8 5 90 90 25 2.8 cw ccw

24 8 5 90 90 25 2.8 ccw cw

24 13 5 90 90 44 5 cw/ccw cw/ccw

Voltage (Vac)

Timing

(sec)

Approvals:

Underwriters Laboratory Inc.: Flammability Rating: UL94-5V.

Component Recognized: File No. E4436, Guide No. XAPX2, Vol. 9, Section 1, 7-25-83.

Stroke

(°) (lb-in.) (Nm)

Open Rotation

(Shaft End View)

1/4 (6)

1-3/8 (35)

3-1/8 (79)

M3851

Spring Return

(Shaft End View)

T6031H Thermostat

A standard spdt switch, without a case, that acts as a changeover thermostat.

Electrical Rating:

0.25A at 1/.4V to 12 Vdc inductive load.

Control Range, Element Temperature and Differential:

See Table 2.

Approval:

Underwriters Laboratories Inc. Listed:

File E4436, Vol. 4, Guide No. XAPX2.

Dimensions:

See Fig. 5.

5 63-2484—2

SOLID STATE ECONOMIZER SYSTEM

MOUNTING HOLES

ON THE 114496 BRACKET, THE MOUNTING HOLES ARE TWO NO. 8-32 TAPPED HOLES. THE 107940 BRACKET IS MOUNTED WITH A 5/32 (4) DIAMETER HOLE AT THE TOP AND A VERTICAL 5/32 X 5/16 (4 X 8) SLOT AT THE BOTTOM.

3/4 (19)

4-3/16 (106)

OVERALL LENGTH: 5 (127)

OVERALL DEPTH LESS ADJUSTING DIAL SHAFT: 2-1/8 (54)

M9090

Fig. 5. Approximate dimensions of back mounting bracket

for T6031H in in. (mm).

W7459A,C Solid State Economizer Logic Module

Used with C7400 Sensor or C7650A Sensor and M7415 or M8405 Actuator to proportion outdoor and return air dampers for economizer control in commercial HVAC equipment.

Electrical Ratings:

Input Voltage: 24 Vac, 50/60 Hz.

Power Consumption: 5.5 VA. Relay Contact Rating at 24 Vac: 1.5A run, 3.5A inrush.

2-13/16 (71)

7/8 (22)

2-3/16

(56)

5/8

(16)

4-1/16 (103)

1-1/4

(32)

Temperature Ratings:

-25°F to +125°F (-32°C to +52°C).

Approval:

Underwriters Laboratories Inc.: Flammability Rating: UL94V-5V.

Specifications:

See Table 3.

Dimensions:

See Fig. 6.

M9085A

Fig. 6. Approximate dimensions of W7459 Solid State

Economizer Logic Module in in. (mm).

SPECIFICATIONS: W7212A LOGIC MODULE

Models: W7212A, W7213A, W7214A Logic Modules: for use with any Honeywell 2-10 Vdc actuator; includes DCV input; adjustable exhaust fan setpoint.

NOTES:

— All models include a minimum damper position

potentiometer, and setpoints for: occupied/unoccupied control, DCV operation, and DCV maximum.

— Occupied/Unoccupied overrides minimum damper

position setting when building is unoccupied.

Dimensions: See Fig. 7.

Electrical Ratings:

Input Voltage: 24 Vac ±20%; 50/60 Hz (Class 2). Nominal

Power Consumption (at 24 Vac, 60 Hz): 11.5 VA.

Relay Contact Rating at 30 Vac (maximum power from class 2

input only): 1.5A run, 3.5A inrush.

63-2484—2 6

SOLID STATE ECONOMIZER SYSTEM

IMPORTANT

All inputs and outputs must be 24 Vac Class 2.

Ambient Ratings:

Temperature: -40°F to +149°F (-40°C to +65°C). Humidity: 5 to

95 percent RH (noncondensing).

Inputs:

Enthalpy (C7400) Dry Bulb Temperature (C7650) Discharge Air (C7046) Mixed Air (C7150) DCV Sensor (C7232): 0/2-10 Vdc control signal;

100K ohm input impedance.

Outputs:

Actuator Signal: 2-10 Vdc. Minimum Actuator Impedance: 1K

ohm.

Exhaust Fan: Contact closure. 24 Vac Out: 25 VA maximum.

Approvals:

Underwriters Laboratories Inc.: UL873 listed. Flammability Rating: UL94-5VB. Plenum Rated. CE. C-tick.

Accessories:

4074EJM Bag Assembly. Consists of: Checkout jumper, 620

ohm, 1.2K ohm, 5.6K ohm, and 6.8K ohm checkout resistors.

C7046A Discharge Air Temperature Sensor. C7150B Mixed Air

Temperature Sensor.

C7232A,B Carbon Dioxide Sensors.

C7400 Solid State Enthalpy Sensor. C7650 Dry Bulb Temperature Sensor. S963B1128 Remote Potentiometer to provide remote control of

damper minimum position.

ST6008 Energy Management Timer for occupied/unoccupied

control.

4-3/8 (112)

1-5/8

(41)

2-1/16

(53)

1-15/16

(49)

4-1/8 (104)

1/8 (4)

2-5/8 (66)

M20578B

Fig. 7. Logic module dimensions in in. (mm).

Table 2. T6031H Thermostat Specifications.

Max Element

Model

Number

Control Range

°F °C °F °C °F °C ft m in. mm

Temperature Differential

Type of

Mounting

Capillary Length Bulb Size

T6031H 0° to 95° -18° to +35° 150° 66° 3° 2° Back 2 0.6 3/8 x 3-1/2 10 x 89

Table 3. W7459A,C,D Specifications.

Model

For Use with

Actuator

Discharge Air

Temperature Input

Minimum Position

Potentiometer Adjustment

Terminals for Remote

Minimum Damper Position

Output Relays

W7459A M7415 Thermistor Sensor Yes Yes 2 spdt

W7459C M8405 Spst control No. Minimum position

No 2 spdt adjustment is built into M8405 Actuator

W7212A M7215

Thermistor sensor Yes Yes 2 spdt

MS7505

INSTALLATION: M7215, M7415, M8405

4. After installation is complete, check out product operation as provided in these instructions.

When Installing this Product...

1. Read instructions carefully. Failure to follow them could damage the product or cause a hazardous condition.

2. Check ratings and description given in the specifications to make sure the product is suitable for your application.

Installer must be a trained, experienced service technician.

CAUTION

Electrical Shock or Equipment Damage Hazard. Can shock individuals or short equipment circuitry.

Disconnect power supply before installation.

7 63-2484—2

SOLID STATE ECONOMIZER SYSTEM

CAUTION

Personal Injury Hazard. Spring-return assembly can release.

Leave end covers attached to the motor.

WIRING: M7215, M7415, M8405

All wiring must comply with applicable codes and ordinances. Refer to Fig. 9 for typical hookup.

Location and Mounting

Locate motor as close as possible to the equipment to be controlled. Refer to Fig. 4 for mounting dimensions.

1. Mount motor with the shaft horizontal to ensure maximum life.

NOTE: Operation in other positions is possible when required

by the application.

2. Remove crank arm (secured with two screws) from the motor hub.

IMPORTANT

Position crank arm on hub so it does not strike motor mounting surface during any portion of full stroke. See Fig. 8.

3. Reposition the crank arm to accommodate specific damper requirements.

NOTE: Crank arm position is adjustable in eight degree

increments.

4. Reconnect crank arm to the motor hub.

5. If there is an excess length of linkage rod, cut it to size.

Make necessary minor adjustments until desired operation is obtained.

6. Tighten all nuts and set screws.

2-10 VDC CONTROL

METER INDICATING MOTOR POSITION (2-10 VDC)

DOTTED LINE REPRESENTS INTERNAL

CONNECTIONS OF THE M7215 ACTUATOR.

–

TR1

IN+

IN–

OUT

M7215

–

M17365

Fig. 9. Typical M7215 wiring.

C7046C Discharge Air Temperature Sensor

The sensor assembly consists of an aluminum sensor probe (element housed internally) with attached flange that can be mounted on a flat duct or plenum surface, or in a 2 in. by 4 in. (51 by 102 mm) junction box, using two no. 8 screws. Connections to the sensor are made through two 6 in. (152 mm) leadwires.

Location

Locate the sensor in the air duct or plenum where it can sample average air temperature. Avoid locations where air stratification can cause sensing errors.

MAXIMUM OPEN POSITION

MOTOR MOUNTING SURFACE

CRANK ARM FIELD ADJUSTABLE IN 7.5 DEGREE INCREMENTS.

MAXIMUM CLOSED POSITION

Fig. 8. Limits of crank arm rotation.

M3850

Mounting

To mount the C7046C Sensor on a flat duct or plenum surface (see Fig. 10):

1. Cut a 1/2 in. (13 mm) hole in the duct or plenum surface at the desired location.

2. Insert the sensor probe into the duct or plenum hole until the flange rests against the duct or plenum wall.

3. If necessary, use the flange as a template to mark and drill two holes for no. 8 mounting screws.

4. Fasten the sensor to the duct or plenum surface with the two no. 8 sheet metal screws (not provided).

63-2484—2 8

SOLID STATE ECONOMIZER SYSTEM

To mount the C7046C Sensor in a junction box (see Fig. 11):

1. Cut a 1/2 in. (13 mm) hole in the duct or plenum surface at the desired location.

2. Remove the center rear knockout from the junction box and insert the sensor probe through the knockout with the flange flat against the junction box.

3. Using the flange as a template, mark and drill two holes in the junction box and the duct or plenum surface for no. 8 mounting screws.

4. Insert the sensor probe through both the junction box knockout and the 1/2 in. (13 mm) hole drilled in the duct or plenum and fasten the junction box and sensor to the duct or plenum surface with the two no. 8 sheet metal screws (not provided).

SYSTEM DUCT OR PLENUM

FLANGE

SENSOR PROBE

TO APPROPRIATE SYSTEM COMPONENTS (SEE WIRING DIAGRAM)

SCREWS NOT PROVIDED.1

SENSOR WIRES WITH 2 SOLDERLESS CONNECTORS

Fig. 10. Mounting C7046C Air Temperature Sensor on duct

or plenum.

STANDARD 2 X 4 (51 X 102) OUTLET BOX (OPTIONAL)

NO. 8 MOUNTING SCREWS (2)

M9086

CONNECTOR AND LOCKNUT

TO APPROPRIATE SYSTEM COMPONENTS (SEE WIRING DIAGRAM)

M9088

SYSTEM DUCT OR PLENUM

Fig. 11. Mounting C7046C Discharge Air Temperature Sensor in junction box.

Wiring

CAUTION

Can Cause Electrical Shock or Equipment Damage.

Disconnect the power supply before connecting the wiring.

Make sure wiring complies with applicable local codes, ordinances and regulations.

SENSOR PROBE

FLANGE

BLANK FACEPLATE (OPTIONAL)

SENSOR WIRES WITH 2 SOLDERLESS CONNECTORS

SCREWS NOT PROVIDED.1

Connect low voltage wiring from the sensor to the appropriate system component terminals using solderless connectors as shown in Fig. 10 and 11.

9 63-2484—2

SOLID STATE ECONOMIZER SYSTEM

IMPORTANT

Failure to follow these wiring practices can introduce electrical interference (noise) that can cause erratic system operation:

a. Keep wiring at least one foot away from large induc-

tive loads such as motors, line starters, lighting ballasts, and large power distribution panels.

b. Shielded cable is required in installations where

these guidelines cannot be met. c. Ground shield only to grounded controller case. d. Make good physical wiring connections to ensure

good electrical connections. e. Make sure that building earth ground connections

are not intermittent or missing. f. Mount sensor only in recommended environment.

MS7505 Damper Actuators

Location and Mounting

LOCATION

Locate the actuator as close as possible to the equipment to be controlled. Refer to Fig. 12 for mounting dimensions.

Wiring

Disconnect power supply before connecting wiring to prevent electrical shock or equipment damage. All wiring must comply with applicable local codes and ordinances.

3-15/16 (100)

1-9/16

(40)

1-9/16

(40)

1-9/16

(40)

2-1/2

(64)

MIN.

3 (76)

MIN. FROM SHAFT

END

Dimensions, Approximate 9.72 in. high x 3.94 in. wide x 2.95

in. deep (247 mm high x 100 mm wide x 75 mm deep)

Fail Safe Mode Spring Return Electrical Connections Enclosed screw terminal strip (22 to

14 AWG) (Enclosed screw terminal strip [0.324 to 2.08 sq mm])

Frequency 60 Hz Manual operation Manual Crank Spring Return Direction By orientation Rotational Stroke 95 ±3 degrees Rotational Stroke Adjustment Mechanically limited 5 degree

increments

Shaft Adapter Type Self-centering clamping Compatible Damper Shafts 3/8 to 1.06 round or 3/8 to 11/16

square (10 to 27 round or 10 to 18 square)

Mounting Direct Coupled External Auxiliary Switches Available Yes Rated Torque (44 lb-in. (5 Nm) Maximum Stall Torque 75 lb-in. (8.5 Nm) Spring Return Torque 44 lb-in. (5 Nm) Maximum Noise Rating, Holding (dBA @ 1m) 20 (no audi-

ble noise)

Maximum Noise Rating, Driving (dBA @ 1m) 40 Environmental Rating NEMA2 Ambient Temperature Range -40°F to +140°F (-40°C to

+60°C)

Storage Temperature Range -40°F to +158°F (-40°C to

+70°C)

Operating Humidity Range (% RH) 5 to 95% RH, non-con-

densing

Materials Aluminum housing, Plenum rated plastic access

cover

Weight 6 lb (2.72 kg) Approvals:

CE: 89/336/ECC, 73/23/EEC

C-Tick N314 Canadian Underwriters Laboratories, Inc. cUL C22.2 No.

24-93

Underwriters Laboratories, Inc. UL873, Plenum Rated Includes Mounting Bracket, Self-Centering Shaft Adapter,

3mm crank

9-3/4 (247)

6-1/8 (156)

1/4 (6)

3 (76)

MIN.

2-15/16 (75)

M20952

Fig. 12. MS7505 Dimensions Diagram.

63-2484—2 10

T6031H THERMOSTAT

Location and Mounting

The T6031H Thermostat mounts either vertically or horizontally on a wall or panel. Locate the remote bulb as far from the controller as capillary tubing allows.

Mounting Sensing Elements

T6031H: Install the bulb in the return airflow where air of average temperature can circulate around it.

IMPORTANT

Do not overtighten clamps to the point of distorting the sensor bulb because overtightening causes a significant shift in bulb calibration.

Mounting Thermostat

Mount the thermostat using the back mounting plate as shown in Fig. 5.

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