Honeywell M8405- User Manual

Honeywell M8405

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Table of Contents:

  • Page 2 – ORDERING INFORMATION
  • Page 3 – MS7505 Spring Return Direct Coupled Actuator; SPECIFICATIONS; C7046 Discharge Air Sensors
  • Page 4 – Fig. 3. Approximate dimensions of C7400A Solid State; Terminal Connections:
  • Page 6 – Fig. 5. Approximate dimensions of back mounting bracket; W7459A,C Solid State Economizer Logic Module; Fig. 6. Approximate dimensions of W7459 Solid State; SPECIFICATIONS: W7212A LOGIC MODULE
  • Page 7 – CAUTION
  • Page 8 – Personal Injury Hazard.; Location and Mounting; C7046C Discharge Air Temperature Sensor; Location
  • Page 9 – Fig. 10. Mounting C7046C Air Temperature Sensor on duct; Wiring; Can Cause Electrical Shock or Equipment Damage.
  • Page 10 – LOCATION; Mounting Sensing Elements; Mounting Thermostat
  • Page 11 – Economizer Logic Module; Equipment Damage Hazard.
  • Page 12 – Temperature Sensor Location and Mounting; OPERATION AND CHECKOUT; resistance versus temperature.; C7400A Solid State Enthalpy Sensor
  • Page 13 – Economizer Logic Module performance curves.
  • Page 14 – W7459A,C Solid State Economizer Logic; W7212A Optional Applications; SETTINGS AND ADJUSTMENTS; Adjusting Minimum Damper Position
  • Page 15 – M7415 Minimum Position Adjustment; W7459A ECONOMIZER LOGIC MODULE
  • Page 16 – Remote Minimum Position Control; SEQUENCE OF OPERATION; Economizer Sequence of Operation; (WITH AND WITHOUT DIFFERENTIAL ENTHALPY)
  • Page 18 – SETTINGS AND ADJUSTMENTS: W7212; Demand Control Ventilation Setpoint; Minimum Position Adjustment
  • Page 19 – EQUATION 1. FORMULA TO AID MINIMUM POSITION ADJUSTMENT.; DCV Maximum Position Adjustment; Enthalpy Changeover Setpoint; Differential Enthalpy Changeover Setting; Exhaust Setpoint; CHECKOUT AND TROUBLESHOOTING
  • Page 31 – CHECKOUT AND TROUBLESHOOTING:
  • Page 32 – Automation and Control Solutions; Step
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PRODUCT DATA

63-2484-2

Solid State Economizer System

(CONSISTING OF: 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 W7459

OR

W7212 SOLID STATE ECONOMIZER LOGIC MODULE)

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.

FEATURES

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 roof-

top 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.

C7150B

M7415/M8405

C7046C

W7459A,C

C7400A/C7650A

W7212

T6031H

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

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Summary

Page 2 - ORDERING INFORMATION

SOLID STATE ECONOMIZER SYSTEM 63-2484—2 2 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 informati...

Page 3 - MS7505 Spring Return Direct Coupled Actuator; SPECIFICATIONS; C7046 Discharge Air Sensors

SOLID STATE ECONOMIZER SYSTEM 3 63-2484—2 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 ...

Page 4 - Fig. 3. Approximate dimensions of C7400A Solid State; Terminal Connections:

SOLID STATE ECONOMIZER SYSTEM 63-2484—2 4 Fig. 2. Approximate dimensions of C7150B Mixed/ Discharge Air Sensor in in. (mm). 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 econ...

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