| NOTES: | IMPORTANT |
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| — | All models include a minimum damper position All inputs and outputs must be 24 Vac Class 2. potentiometer, and setpoints for: enthalpy or dry-bulb, occupied/unoccupied control, DCV Ambient Ratings: (CO2) operation, CO2 sensor failure mode and Temperature: -40°F to +149°F (-40°C to +65°C). |
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| DCV maximum (DCV MAX). | Humidity: 5 to 95 percent RH (noncondensing). |
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| damper position setting when building is | Inputs: |
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| unoccupied. | Enthalpy (C7400): 2-wire (18,20,22 AWG) connection. |
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| pancy, CO2 input and damper positions for | Mixed Air (C7150): 2-wire (18,20,22 AWG) connection. adjustments of potentiometers for MIN POS and DCV (CO2) Sensor (C7232): 0/2-10 Vdc control signal; DCV MAX. This feature was added with series 2 100K ohm input impedance. version of the product; series 1 does NOT default to DCV MAX, series 1 defaults to MIN POS on Outputs: |
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| failure of CO2 sensor. | Actuator Signal: 2-10 Vdc. Minimum Actuator Impedance: 1K ohm. |
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| Dimensions: See Fig. 1. | Exhaust Fan: Contact closure. 24 Vac Out: 25 VA maximum. 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 |
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| Approvals: | 3. Installer must be a trained, experienced service |
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| Flammability Rating: UL94-5VB. | 4. After installation is complete, check out product |
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| Plenum Rated. | operation as provided in these instructions. |
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| CE. | 5. When adding a CO2 sensor (DCV sensor) in the field, |
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| C-tick. | the MIN POS and DCV MAX position potentiometers must be adjusted by the installer. The MIN POS potenti- |
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| Accessories: | ometer must be closer to the fully CCW position that the 620 ohm, 1.2K ohm, 5.6K ohm, and 6.8K ohm checkout beteen the two settings on a call for DCV. resistors. |
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| C7150B Mixed Air Temperature Sensor. | Location and Mounting |
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| C7232A,B Carbon Dioxide Sensors. | The logic modules mount on an M7215 or a sheet metal duct |
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| W7213 and W7214. | clearance for maintenance and service (see Fig. 1 for |
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| C7400C for use with W7212C models. | dimensions). Mount device in a location protected from rain, |
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| C7660 Dry Bulb Temperature Sensor. | snow, and direct sunlight. Secure device to sheet metal using damper minimum position. control. CAUTION Equipment Damage Hazard. 4-3/8 (112) Mounting screws longer than 5/8 in. can damage internal motor components. When mounting the module to an M7215 use only the 1-5/8 included #6 5/8 in. thread-forming screw. (41) NOTE: See Fig. 4 for representative locations of connected system devices. 2-1/16 |
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| 安裝 | 5/8 INCH SCREW INCLUDED WITH LOGIC MODULE. M20717B Fig. 2. Direct mounting of module. 1. Read these instructions carefully. Failure to follow them could damage the product or cause a hazardous condition. 2. Check the ratings given in the instructions and on the product to make sure the product is suitable for your application. 3 63-2596—09 RETURN AIR SENSING 1. Ensure differential enthalpy control |
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| Occupied | Input on Action with 24 VAC |
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| C7400 Enthalpy Sensor and | Terminal N has AQ-AQ1 power applied to W7212 24 VAC power terminalsa (TR-TR1) |
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| Yes | <1 Vdc Drives to MIN POS or DCV MAX (highest) |
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| same for either sensor. | Nob <1 Vdc Drives to DCV MAX |
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| be of the same type. | No >DCV set pt Drives to DCV MAX a <1 Vdc = no CO2 sensor or failed sensor; 1 Vdc = CO2 sen- For differential dry bulb operation use two C7650 sen- sors. Note for referential dry bulb use only the C7660 sor working but below CO2 set point and CO2 sensor work- dry bulb sensor for the most energy savings. ing and above set point. b Economizer should be powered by fan, if fan is off econo- |
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| OUTDOOR AIR SENSING | mizer will spring return damper closed, if fan is on and no 1. Mount sensor in any orientation exposing it to freely occupancy damper will drive to DCV MAX position. circulating air while protecting it from rain, snow, and direct sunlight. 2. Connect it to the SO and SO+ terminals of the device. 1. Mount sensor in an area with unobstructed air circulation. 2. Connect it to the AQ and AQ1 terminals |
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| DISCHARGE | COMMERCIAL |
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| AIR SENSOR | THERMOSTAT |
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| DIRECT | DCV |
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| C7046A | 2 C7232 |
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| EXPANSION | SENSOR COIL |
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| W7212, | C7150B |
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| W7213, | ENTHALPY 1 C7400 |
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| W7214 | MIXED AIR SENSOR SENSOR INDOOR FAN HONEYWELL |
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| C7400 | SENSOR 1 FOR DIFFERENTIAL ENTHALPY, THE TWO C7400 ENTHALPY SENSORS ARE CONNECTED TO THE |
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| ECONOMIZER LOGIC MODULE—ONE | EXHAUST IS MOUNTED IN RETURN AIR, AND THE OTHER IS FAN MOUNTED IN OUTDOOR AIR. 2 USE EITHER MIXED AIR SENSOR OR DISCHARGE AIR SENSOR, NOT BOTH. |
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| RETURN AIR | EXHAUST AIR M19547C Fig. 4. Representative locations of connected economizer system devices. |
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| Wiring | Optional Applications Heat Pump Changeover |
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| CAUTION | (W7213, W7214 only) Electrical Shock or Equipment Damage Hazard. In heat pump applications, the controller must have control of |
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| Can shock individuals or short equipment | the changeover valve. To provide the logic module with the |
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| circuitry. | information necessary for proper information, there must be a Disconnect power supply before installation. connection to the logic module O/B terminal. This terminal alerts the logic module as to when the system operates in |
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| IMPORTANT | cooling (the only time the economizer is used). 1. All wiring must comply with applicable local codes, |
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| ordinances and regulations. | IMPORTANT 2. Refer to Table 2 for a list of the wiring diagrams and During heating applications with defrost, make sure to corresponding Figure numbers in this document. break the connection to the economizer using an iso- 3. All device inputs and outputs must be 24 Vac Class 2. lation relay. 4. Ensure proper polarity of sensor connections. Incorrect polarity negates the sensor signal. W7213 (CHAN |
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| Actuator | Enthalpy Changeover Comments Figure Economizer |
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| Honeywell MS7XXX | Single Single-stage cooling system. 12 W7212 |
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| Single or Differential | Two-stage cooling system. 13 |
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| Two-stage heat pump system. | 15 W7213, W7214 |
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| Honeywell M7215 | Single Direct mount Logic Module to Motor and 9 W7212 T7300 thermostat. |
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| n/a | n/a S963 remote damper control. 6 |
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| Honeywell Series 72 | Single or Differential Honeywell Series 72. 14 W7212 |
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| OPERATION | When wired as shown in Fig. 9 through 15, the logic module responds to the cooling thermostat signal. The system uses C7400 Solid State Enthalpy Changeover Sensor(s) or C7660 at higher temperatures for free cooling when humidity is low. |
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| setting: | dry, arid climates and only in single dry bulb changeover. Do |
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| — W7212: | not use the C7660 in differential dry bulb applications. • 24 Vac (Occupied). |
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| • No power (Unoccupied). | The logic module functions as a true first stage of cooling It automatically locks out free cooling during heating; holding minimum position is defined by the potentiometers. using Demand Control Ventilation and the space CO2 level is When the module is operating in Unoccupied mode, above the set point, the damper will be between the MIN POS and there is no call for cooling, the damper drives full |
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| INPUTS | OUTPUTS |
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| Enthalpya | Compressor N Terminalb |
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| Demand Control | Stage Stage Occupiedb Unoccupiedb |
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| Ventilation (DCV) | Outdoor Return Y1 Y2 1 2 Damper |
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| Below set | High Low On On On On Minimum position Closed |
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| See Table 1 for | Off Off Off Off |
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| outdoor damper | Low High On On On Off Modulatingc Modulatingc |
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| action if input on (Free Cooling LED On) | (between min. position (between closed and |
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| AQ-AQ1 terminals | On Off Off Off |
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| and full-open) | full-open) |
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| This the fault for | Off Off Off Off Minimum position Closed |
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| Above set | High Low On On On On Modulatingd Modulatingd, g |
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| and DCV maximum) | DCV maximum) |
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| Off | Off Off Off |
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| Low | High On On On Off Modulatinge Modulatingf (Free Cooling LED On) On Off Off Off |
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| points and LED indications. | Module follows logic detailed above. |
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| Module follows logic detailed above. | whichever is the higher of the two. When power is 24V power to B: heating mode, free cool disabled. cut to the economizer (fan is off) then the damper Actuator drives to minimum position or DCV MAX will spring return closed. whichever is the higher of the two. When power is cut to the economizer (fan is off) then the damper will spring return closed. 7 63-2596—09 |
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| SETTINGS AND ADJUSTMENTS | established by ASHRAE standard 62.1. When used with a CO2 occupancy sensor the minimum position will modulate between the MIN POS pot setting and the DCV MAX pot setting based on the CO2 input to the AQ-AQ1 terminals from |
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| — Exhaust setpoint. | NOTES: |
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| EXHAUST | an increased requirement for cooling, it overrides |
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| FAN SETPOINT | the DCV maximum position potentiometer and can LED LIGHTS |
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| N1 | EXH Set drive the damper full-open. |
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| WHEN EXHAUST | N 2V 10V |
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| P1 | EXH mixed air sensor overrides the DCV and closes the MINIMUM DAMPER |
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| POSITION SETTING | P Min damper to protect from freezing the hot or chilled water coils. Control returns to normal once the Pos |
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| MAXIMUM DAMPER | Open DEMAND CONTROL mixed air temperature rises to 48°F. Some models |
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| VENTILATION SETPOINT | DCV Max of the W7212 close the damper fully and others LED LIGHTS WHEN DEMAND CONTROL 2V 10V close the damper to minimum position. Check the label on the box for position of damper on freeze AQ1 DCV VENTILATION INPUT protection. If the CO2 sensor should fail, the |
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| IS ABOVE SETPOINT | DCV |
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| SO+ | Set 2V 10V W7212 defaults to DCV maximum, providing mini- DEMAND CONTROL |
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| Cool | mum ventilation for the maximum design occu- |
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| SR | B C pancy. |
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| LED LIGHTS WHEN | A D OUTDOOR AIR IS SUITABLE FOR |
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| FREE COOLING | B |
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| D | W7212C modules have Minimum Position Adjustment the "E" enthalpy curve ENTHALPY CHANGEOVER SETPOINT |
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| A | E For detailed assistance in minimum position selection M20604B reference the Economizer Application Guide (form 63-8594) Ventilation section. The following provides basic guidelines for Fig. 5. Potentiometer and LED locations (W7212 shown). minimum position selection and adjustment: IMPORTANT |
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| Demand Control Ventilation Setpoint | • Adjust the minimum position potentiometer to allow NOTE: Make ventilation adjustments with at least a 10°F |
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| potentiometer to be set at 6 Vdc. | 1. Calculate the appropriate mixed air temperature, see Equation 1. dure to adjust the damper positions for minimum OA when the space is occupied. When using a DCV sensor |
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| Adjusting Minimum and Maximum | you will need to set the MIN POS and DCV MAX posi- |
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| Positions | tions using this procedure. DCV MAX will be the same as 4. Ensure that either the factory-installed jumper is in place will return the OA damper to minimum position (this is either across terminals P and P1 or, if remote damper position MIN POS if using a CO2 sensor or DCV MAX if a CO2 sensor is required, that it is wired according to Fig. 6 and the is NOT used). MIN POS potentiometer is turned fu |
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| temperature reaches the calculated value. | connected to one logic module. The logic module compares outdoor air to return air. NOTE: Ensure that the sensed air is well mixed. NOTE: Turn the enthalpy setpoint potentiometer fully clock- wise to the D (or E setting for W7212C) setting. 7. If all minimum (MIN POS) and maximum position (DCV MAX) adjustments are complete, remove the T-T1 The logic module selects the lower enthalpy air (return or |
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| TO = Outdoor air temperature | Exhaust Setpoint |
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| OA = Percent of outdoor air | The exhaust setpoint determines when the exhaust fan runs |
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| TR = Return air temperature | based on damper position. When the exhaust fan call is made, |
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| RA = Percent of return air | the module provides a 60 ±30 second delay before exhaust fan |
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| TM = Resulting mixed air temperature | activation. This delay allows the damper to reach the appropriate position to avoid unnecessary fan overload. |
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| Fahrenheit temperature. | NOTES: |
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| EXAMPLE: | Assume local codes require 10% outdoor air dur- — EF and EF1 are 24V dry contacts only. An external ing occupied conditions, outdoor air is 60°F and line voltage contactor is required to operate the return air is 75°F. Under these conditions, what is exhaust fan. |
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| the temperature of the mixed air? | — When the exhaust fan is deactivated the EF and EF1 contacts open immediately. ( 0.1 × 60°F ) + ( 0.9 × 75°F ) = 6.0°F + 67.5°F = 73.5°F Adjustable Exhaust Setpoint potentiometer allows the installer to adjust the damper position need to adjust the MIN POS for the building effluent (low occupancy) airflow and adjust the DCV MAX NOTE: The 60 ±30 second delay allows the outdoor damper using the min |
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| Enthalpy Changeover Setpoint | Remote Minimum Position Control Remote control of outdoor air dampers is desirable when |
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| Outdoor Enthalpy Changeover Setpoint | requiring temporary additional ventilation. The addition of a S963B1128 Remote Potentiometer allows occupants to open 9 63-2596—09 S963B1128 REMOTE POTENTIOMETER |
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| R | MINIMUM |
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| CW | P1 POSITION |
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| CLOSE | ADJUSTMENT |
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| W | B ECONOMIZER M20603A Fig. 6. S963B1128 Remote Potentiometer used with logic module for remote damper control. 85 90 95 100 105 110 (29) (32) (35) (38) (41) (43) CONTROL CONTROL POINT CURVE APPROX. °F (°C) |
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| AT 50% RH | 80 (27) |
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| B | 70 (21) 40 |
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| C | 67 (19) |
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| E | 55 (13) 34 D D (24) TIV (21) (18) (16) (13) B (10) C 45 D (7) (4) E 10 (2) B A D C 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 (2) (4) (7) (10) (13) (16) (18) (21) (24) (27) (29) (32) (35) (38) (41) (43) APPROXIMATE DRY BULB TEMPERATURE— °F (°C) 1 HIGH LIMIT CURVE FOR W7210D, W7212, W7213, W7214, W7340C. M23879A 11 63-2596—09 |
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| MINIMUM POSITION | 24 24 Vac |
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| ADJUSTMENT | Vac COM |
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| HOT | 24 VAC COM |
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| C7150B MIXED | P |
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| AIR OR C7046A | T1 + – |
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| SENSOR + | SO+ 3 4 |
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| SR+ | EF EF1 M7215 |
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| OUTDOOR | + 3 AIR |
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| ENTHALPY | 620 OHM L1 |
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| SENSOR | S RESISTOR (HOT) EXHAUST FAN |
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| Y1 | C |
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| Y2 | Y1 COOL 1 |
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| W2 | Y2 COOL 2 |
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| G | FAN |
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| X | R L1 (HOT) |
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| T7300/Q7300 | HVAC EQUIPMENT |
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| THERMOSTAT | TERMINAL STRIP 1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. 2 ENSURE THAT TRANSFORMER IS SIZED TO HANDLE THE EXTRA LOAD OF THE ECONOMIZER AND ACTUATOR. USE THE SAME TRANSFORMER FOR T7300 AND ECONOMIZER. 3 FACTORY INSTALLED 620 OHM, 1 WATT, 5% RESISTOR SHOULD NOT BE REMOVED. DIFFERENTIAL ENTHALPY NOT RECOMMENDED FOR USE WITH SINGLE-STAGE COOLING SYSTEMS OR SINGLE-ST |
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| OUTDOOR + | 5 |
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| AIR | 620 OHM L1 |
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| ENTHALPY S | RESISTOR (HOT) |
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| W1 | HEAT 1 |
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| T7350 | HVAC EQUIPMENT |
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| T1 | + – 2-10 VDC CONTROL |
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| RESISTOR | (HOT) SENSOR EXHAUST FAN |
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| TB7220 OR TB8220 | HVAC EQUIPMENT |
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| ~ | 1 N 2 MINIMUM POSITION |
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| + | 3 |
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| F | DISCHARGE T AIR SENSOR 1 2 AQ1 |
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| MS7XXX | 2-10 VDC – |
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| HONEYWELL | INDOOR AIR AQ |
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| ACTUATOR | SENSOR + SO+ 3 4 |
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| COOL 1 | (HOT) |
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| DELAY | OCCUPIED RELAY |
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| RH | FDR |
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| FDR | L2 |
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| COMMERCIAL | HVAC EQUIPMENT |
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| AQ1 | 2K |
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| CONTROL | COOL 2 EXHAUST |
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| T7300 OR T874 | HVAC EQUIPMENT |
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| PROTECTION AS REQUIRED. | FOR T7300, USE A1 AND A2 TERMINALS. FOR T7350 USE AUX TERMINAL. 2 ENSURE THAT TRANSFORMER IS SIZED TO HANDLE THE EXTRA FOR TB7220 OR TB8220 USE A TERMINAL |
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| LOAD OF THE ECONOMIZER AND ACTUATOR. | THE TERMINALS ARE CONNECTED WHEN THERMOSTAT IS IN THE OCCUPIED MODE. 3 1S IS AN ELECTRONIC SWITCH THAT CLOSES WHEN POWERED 7 EF AND EF1 ARE DRY CONTACTS IN THE LOGIC MODULE. BY A 24 VAC INPUT. 8 SEE WIRING DIAGRAMS FIGS 9 AND 10 FOR T7350 AND TB7220/TB8220. 4 FOR T7300 ONLY 9 TIME CLOCK IS AN OPTION TO USING OCCUPIED CONTACTS ON THE 5 FACTORY INSTALLED 620 OHM, 1 WATT, 5% RESISTOR SHOULD BE COMMER |
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| TR | TR1 |
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| Vac | COM HOT |
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| UNOCCUPIED | C7400 620 OHM 5 3 OUTDOOR + RESISTOR |
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| ST6008 | AIR |
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| TIMER | 7 ENTHALPY |
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| L1 | OCCUPIED (HOT) 1 L2 |
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| AND OVERLOAD PROTECTION AS REQUIRED. | EXHAUST |
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| THE LOAD OF ALL ACTUATORS. | HEAT 1 |
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| FOR T7300, USE A1 AND A2 TERMINALS. | G FAN DELAY |
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| FOR T7350 USE AUX TERMINAL. | RELAY FOR TB7220 OR TB8220 USE A TERMINAL |
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| THE TERMINALS ARE CONNECTED WHEN | FDR COMMERCIAL THERMOSTAT IS IN THE OCCUPIED MODE. G FAN 4 FACTORY INSTALLED 620 OHM, 1 WATT, 5% RESISTOR L2 SHOULD BE REMOVED ONLY WHEN A C7400 ENTHALPY FDR 1 |
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| ENTHALPY. | (HOT) |
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| LOGIC MODULE. | 6 6 SEE WIRING DIAGRAMS FIGS 9 AND 10 FOR T7350 AND TB7220/TB8220. 7 TIME CLOCK IS AN OPTION TO USING OCCUPIED CONTACTS |
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| ON THE COMMERCIAL THERMOSTAT. | M13661B 17 63-2596—09 |
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| RC | R L1 (HOT) |
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| O | O |
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| T7300 | HVAC EQUIPMENT |
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| OPTION UNDER | 1 W7212 SETUP” 3 “THERMOSTAT 0400 = 2 INSTALLER 3 0174 = E SETUP” 0540 = 2 0400 = 2 0174 = E HVAC EQUIP |
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| HVAC EQUIP | 0540 = 2 TERMINAL STRIP TERMINAL |
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| STRIP | C 1 Y1 |
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| VISION 2 | 3 Y2 R G |
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| PRO IAQ 3 | C Y2 COOL 2 RC V1 G COM |
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| R G | RH T2 FAN |
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| COM | EIM |
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| CHECKOUT AND | W7212 |
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| TROUBLESHOOTING | N1 EXH Set |
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| N | 2V 10V |
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| checkout. | T1 Pos 1 T Open DC VOLTMETER DCV CAUTION Max |
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| Equipment Damage Hazard. | AQ DCV |
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| Excessive force can damage potentiometer | S SO+ Set 10V |
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| controls. | C7400 SO Free Use a small screwdriver when adjusting enthalpy + SR+ Cool |
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| Step | Checkout Procedure Proper Response |
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| Disconnect power at TR and TR1. | All LED are off; Exhaust Fan contacts are open. Disconnect devices at P and P1. Jumper P to P1 (defaults to on board MIN POS potentiometer). Place 5.6K ohm resistor across T and T1 (Blue sleeve- provides input to economizer that the MAT is between 50-55F). Jumper TR to 1 (call for cooling from the thermostat). W7212 only: Jumper TR to N (places economizer in occupied mode). If connected, remove C7 |
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| Execute step one, Checkout Preparation. | — Turn DCV MAX to mid position. Place 620 ohm resistor across SO and + (white sleeve resistor makes OA — enthalpy low). Place 1.2K ohm resistor across SR and + (purple sleeve resistor makes RA Free cool LED turns on; motor drives to approximately 45 degrees (half) |
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| enthalpy high). | open. |
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| Remove 620 ohm resistor from SO and +. | Free cool LED turns off; motor drives closed |
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| Turn DCV MAX to mid position. | Motor drives to mid position, 45 degrees open. |
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| Turn MIN POS fully CW. | Motor drives fully open. |
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| Turn MIN POS and DCV MAX to fully CCW. | Motor drives closed. |
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| Adjust DCV MAX towards CW. | Motor will move to position set by DCV MAX pot. |
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| Adjust DCV MAX to fully CCW. | Motor will drive closed. Reconnect jumper to N terminal. |
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| Adjust DCV MAX and MIN POS pots. | Motor will drive to the most open position of the pots. Adjust DCV MAX and MIN POS pots to fully CCW. Remove power from N terminal adjust MIN POS towards CW Motor should not move. |
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| Turn MIN POS to fully CCW. | Actuator drives fully closed. |
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| W7212: Remove jumper from TR and N. | Actuator drives fully closed. W7214: Jumper TR to O. |
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| W7213: Jumper TR to B. | Free cool LED turns off. |
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| W7214: Remove jumper from TR and O. | Actuator drives fully closed. ® U.S. Registered Trademark |
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| Toronto, Ontario M1V 4Z9 | © 2010 Honeywell International Inc. 63-2596—09 M.S. Rev. 03-10 |
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| customer.honeywell.com | Printed in U.S.A. |
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