W7212, W7213, W7214 Economizer Logic Modules

Transcription

1 W7, W7, W7 Economizer Logic Modules FO VENTILATION ONTOL PODUT DATA FEATUES APPLIATION W7, W7, and W7 Economizer Logic Modules are used with 7 (O) Demand ontrol Ventilation (DV) Sensors, and solid state 700 Enthalpy Sensors or 7660 Dry Bulb Temperature Sensors. All models proportion outdoor and return air dampers for control of free cooling in commercial HVA equipment. Operates from thermostat and DV (O) sensor to provide a totally integrated control system. Solid state control package provides accurate, reliable and stable control. Mounts on M7 Motor or ductwork. ontrol can be tempered by DV and fan cycling. Used with Honeywell actuators. ombines minimum and DV maximum damper position potentiometers with compressor staging. Solid state enthalpy or dry bulb changeover control. Terminals included for switching between Occupied and Unoccupied operation. Terminals included for connecting optional S96B8 emote Potentiometer for remote minimum damper position control. LED indicates when free cooling is available. LED indicates when module is in DV mode. LED indicates when exhaust fan contact is closed. On O sensor failure defaults to DV maximum damper position for minimum position. This feature was added with the series version of the product. See Table. W7 is used with heat pump B terminal. W7 is used with heat pump O terminal. W7 is used for applications requiring low temperature and humidity and has the E enthalpy curve. ontents Application... Features... Specifications... Ordering Information... Installation... Settings and Adjustments... 8 heckout and Troubleshooting

2 W7, W7, W7 EONOMIZE LOI MODULES SPEIFIATIONS Models: W7A, W7A, W7A Logic Modules: for use with any Honeywell -0 Vdc actuator; includes DV (O) input; adjustable exhaust fan setpoint. NOTES: All models include a minimum damper position potentiometer, and setpoints for: enthalpy or dry-bulb, occupied/unoccupied control, DV (O) operation, O sensor failure mode and DV maximum (DV MAX). Occupied/Unoccupied overrides minimum damper position setting when building is unoccupied. On O sensor failure the damper outdoor damper defaults to DV maximum position. See table for economizer functions based on occupancy, O input and damper positions for adjustments of potentiometers for MIN POS and DV MAX. This feature was added with series version of the product; series does NOT default to DV MAX, series defaults to MIN POS on failure of O sensor. Dimensions: See Fig.. Electrical atings: Input Voltage: Vac ±0%; 0/60 Hz (lass ). Nominal Power onsumption (at Vac, 60 Hz):. VA. elay ontact ating at 0 Vac (maximum power from class input only):.a run,.a inrush. IMPOTANT All inputs and outputs must be Vac lass. Ambient atings: Temperature: -0 F to 9 F (-0 to 6 ). Humidity: to 9 percent H (noncondensing). Inputs: Enthalpy (700): -wire (8,0, AW) connection. Dry Bulb Temperature (7660): -wire (8,0, AW) connection. Discharge Air (706): -wire (8,0, AW) connection. Mixed Air (70): -wire (8,0, AW) connection. DV (O) Sensor (7): 0/-0 Vdc control signal; 00K ohm input impedance. Outputs: Actuator Signal: -0 Vdc. Minimum Actuator Impedance: K ohm. Exhaust Fan: ontact closure. Vac Out: VA maximum. ODEIN INFOMATION When purchasing replacement and modernization products from your TADELINE wholesaler or distributor, refer to the TADELINE atalog 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:. Your local Honeywell Automation and ontrol Products Sales Office (check white pages of your phone directory).. Honeywell ustomer are 88 Douglas Drive North Minneapolis, Minnesota -86 In anada Honeywell Limited/Honeywell Limitée, Dynamic Drive, Toronto, Ontario MV Z9. International Sales and Service Offices in all principal cities of the world. Manufacturing in Australia, anada, Finland, France, ermany, Japan, Mexico, Netherlands, Spain, Taiwan, United Kingdom, U.S.A

3 W7, W7, W7 EONOMIZE LOI MODULES Approvals: Underwriters Laboratories Inc.: UL87 listed. Flammability ating: UL9-VB. Plenum ated. E. -tick. Accessories: 07EJM Bag Assembly. onsists of: heckout jumper, 60 ohm,.k ohm,.6k ohm, and 6.8K ohm checkout resistors. 706A Discharge Air Temperature Sensor. 70B Mixed Air Temperature Sensor. 7A,B arbon Dioxide Sensors. 700A Solid State Enthalpy Sensor for use with W7A, W7 and W for use with W7 models Dry Bulb Temperature Sensor. S96B8 emote Potentiometer to provide remote control of damper minimum position. ST6008 Energy Management Timer for occupied/unoccupied control. -/8 () -/8 (). Installer must be a trained, experienced service technician.. After installation is complete, check out product operation as provided in these instructions.. When adding a O sensor (DV sensor) in the field, the MIN POS and DV MAX position potentiometers must be adjusted by the installer. The MIN POS potentiometer must be closer to the fully W position that the DV MAX potentiometer for the damper to modulate beteen the two settings on a call for DV. Location and Mounting The logic modules mount on an M7 or a sheet metal duct or panel. When planning the installation, allow enough clearance for maintenance and service (see Fig. for dimensions). Mount device in a location protected from rain, snow, and direct sunlight. Secure device to sheet metal using the two supplied mounting screws, see Fig.. NOTE: AUTION Equipment Damage Hazard. Mounting screws longer than /8 in. can damage internal motor components. When mounting the module to an M7 use only the included #6 /8 in. thread-forming screw. See Fig. for representative locations of connected system devices. -/6 () -/6 (9) M7 DAMPE MOTO -/8 (0) EONOMIZE LOI MODULE /8 () -/8 (66) M078A Fig.. Logic module dimensions in in. (mm). INSTALLATION When Installing this Product.... ead these instructions carefully. Failure to follow them could damage the product or cause a hazardous condition.. heck the ratings given in the instructions and on the product to make sure the product is suitable for your application. /8 INH SEW INLUDED WITH LOI MODULE. Fig.. Direct mounting of module. M077B

4 W7, W7, W7 EONOMIZE LOI MODULES ETUN AI SENSIN. Ensure differential enthalpy control has a second enthalpy sensor in the return air duct.. onnect this sensor to the S and S terminals.. Ensure sensor is mounted in the return air duct for proper operation. M060 Demand ontrol Ventilation The DV O sensor must provide a -0 Vdc output. Less than Vdc input assumes a sensor failure and the action of the outdoor air dampers defaults to < Vdc operation in Table. The DV (O) modulates the outdoor damper to provide ventilation based on occupancy. The DV setpoint potentiometer is adjusted to provide ventilation based on the output of the O sensor. The DV LED lights when the DV (O) signal is above setpoint. If the O sensor should fail, the W7 will default to the DV MAX position which is the minimum position design for 00% occupancy of the space. Fig.. Mounting the module on sheet metal. 700 Enthalpy Sensor and 7660 Dry Bulb Temperature Sensor W7, W7, W7 Logic Modules accept signals from either the 700 Enthalpy Sensor or the 7660 Dry Bulb Temperature Sensor. The W7A, W7 and W7 models are used with the 700A sensor and the W7 models are used with the 700 sensor. The wiring is the same for either sensor. IMPOTANT When using differential sensing, both sensors must be of the same type. For differential dry bulb operation use two 760 sensors. Note for referential dry bulb use only the 7660 dry bulb sensor for the most energy savings. OUTDOO AI SENSIN. Mount sensor in any orientation exposing it to freely circulating air while protecting it from rain, snow, and direct sunlight.. onnect it to the SO and SO terminals of the device. Table. W7 Terminal Power and Action. Occupied Input on Action with VA Terminal N has AQ-AQ power applied to W7 VA power terminals a (T-T) Yes Vdc Drives to MIN POS No Vdc No movement of motor Yes < Vdc Drives to MIN POS or DV MAX (highest) No b < Vdc Drives to DV MAX Yes >DV set pt Drives to up to MIN POS or DV MAX (highest) No >DV set pt Drives to DV MAX a < Vdc = no O sensor or failed sensor; Vdc = O sensor working but below O set point and O sensor working and above set point. b Economizer should be powered by fan, if fan is off economizer will spring return damper closed, if fan is on and no occupancy damper will drive to DV MAX position

5 W7, W7, W7 EONOMIZE LOI MODULES Mount the O sensor according to the manufacturer specifications. If not available, use the following guidelines:. Mount sensor in an area with unobstructed air circulation.. onnect it to the AQ and AQ terminals of the W7 (see Wiring section for details).. Adjust the DV potentiometer setpoint to correspond to DV voltage output at the threshold. 706A DISHAE AI DIET EXPANSION OIL OMMEIAL THEMOSTAT 7 DV DISHAE AI INDOO W7, W7, W7 70B MIXED AI HONEYWELL ATUATO 700 ENTHALPY OUTDOO AI 700 ENTHALPY FO DIFFEENTIAL ENTHALPY, THE TWO 700 ENTHALPY S AE ONNETED TO THE EONOMIZE LOI MODULE ONE IS MOUNTED IN ETUN AI, AND THE OTHE IS MOUNTED IN OUTDOO AI. EXHAUST USE EITHE MIXED AI O DISHAE AI, NOT BOTH. ETUN AI EXHAUST AI M97 Fig.. epresentative locations of connected economizer system devices. Wiring AUTION Electrical Shock or Equipment Damage Hazard. an shock individuals or short equipment circuitry. Disconnect power supply before installation. IMPOTANT. All wiring must comply with applicable local codes, ordinances and regulations.. efer to Table for a list of the wiring diagrams and corresponding Figure numbers in this document.. All device inputs and outputs must be Vac lass.. Ensure proper polarity of sensor connections. Incorrect polarity negates the sensor signal. Optional Applications Heat Pump hangeover (W7, W7 only) In heat pump applications, the controller must have control of the changeover valve. To provide the logic module with the information necessary for proper information, there must be a connection to the logic module O/B terminal. This terminal alerts the logic module as to when the system operates in cooling (the only time the economizer is used). IMPOTANT During heating applications with defrost, make sure to break the connection to the economizer using an isolation relay. W7 (HANEOVE TEMINAL B) onnect the B terminal according to the following details: V power to B: System is in heating mode. No power to B: System is in cooling mode. W7 (HANEOVE TEMINAL O) onnect the O terminal according to the following details: V power to O: System is in cooling mode. No power to O: System is in heating mode

6 W7, W7, W7 EONOMIZE LOI MODULES Table. Applicable Wiring Diagrams. Actuator Enthalpy hangeover omments Figure Economizer Honeywell MS7XXX Single Single-stage cooling system. W7 Single or Differential Two-stage cooling system. Two-stage heat pump system. W7, W7 Honeywell M7 Single Direct mount Logic Module to Motor and 9 W7 T700 thermostat. n/a n/a S96 remote damper control. 6 Honeywell Series 7 Single or Differential Honeywell Series 7. W7 Honeywell M7 Single or Differential With T700 thermostat 9 W7 Honeywell M7 Single or Differential With T70 thermostat 0 Honeywell M7 Single or Differential With TB70 or TB80 thermostat OPEATION The purpose of the economizer is to use outdoor air for cooling, whenever possible, to reduce compressor operation. Power at the N terminal determines the Occupied/Unoccupied setting: W7: Vac (Occupied). No power (Unoccupied). See Fig. 9 through for controller hookup. NOTE: When module is operating in Occupied mode, the minimum position is defined by the potentiometers. When the module is operating in Unoccupied mode, and there is no call for cooling, the damper drives fully closed. When wired as shown in Fig. 9 through, the logic module responds to the cooling thermostat signal. The system uses 700 Solid State Enthalpy hangeover Sensor(s) or 7660 Dry Bulb Temperature Sensor(s). The 700 responds to both dry bulb temperature and humidity, allowing use of outdoor air at higher temperatures for free cooling when humidity is low. The 7660 responds only to dry bulb temperature; use only in dry, arid climates and only in single dry bulb changeover. Do not use the 7660 in differential dry bulb applications. The logic module functions as a true first stage of cooling providing maximum energy economy during the cooling cycle. It automatically locks out free cooling during heating; holding the outdoor air damper at the minimum position setting (or if using Demand ontrol Ventilation and the space O level is above the set point, the damper will be between the MIN POS and DV MAX position)

7 W7, W7, W7 EONOMIZE LOI MODULES The logic module can operate as either a basic free cooling controller, or it can incorporate additional functions. Table details the input/output (I/O) logic of the module. Demand ontrol Ventilation (DV) Below set (DV LED Off) See Table for outdoor damper action if input on AQ-AQ terminals is Vdc or < Vdc. This the fault for O sensor failure. If no sensor or Vdc input is added to AQ-AQ terminals then use the DV MAX potentiometer to adjust the minimum position. Above set (DV LED On) INPUTS Enthalpy a Outdoor High (Free ooling LED Off) Low (Free ooling LED On) High (Free ooling LED Off) Low (Free ooling LED On) Table. W7 Economizer I/O Logic. eturn Y Y ompressor Stage Stage OUTPUTS Occupied b N Terminal b Damper Low On On On On Minimum position losed On Off On Off Off Off Off Off Unoccupied b High On On On Off Modulating c Modulating c On Off Off Off (between min. position (between closed and and full-open) full-open) Off Off Off Off Minimum position losed Low On On On On Modulating d On Off On Off (between min. position and DV maximum) Off Off Off Off Modulating d, g (between closed and DV maximum) High On On On Off Modulating e Modulating f On Off Off Off Off Off Off Off a For single enthalpy control, the module compares outdoor enthalpy to the ABD setpoint. b Power at N terminal determines Occupied/Unoccupied setting: W7: Vac (Occupied), no power (Unoccupied). W7,W7: No power (Occupied), Vac (Unoccupied). c Modulation is based on the mixed air sensor signal. d Modulation is based on the DV signal. If the O sensor input (AQ-AQ) terminals is < Vdc or the sensor has failed, the motor will drive to MIN POS or DV MAX which ever is highest. e Modulation is based on the greater of DV and mixed air sensor signals, between minimum position and either maximum position (DV) or fully open (mixed air signal). f Modulation is based on the greater of DV and mixed air sensor signals, between closed and either maximum position (DV) or fully open (mixed air signal). g Modulation is based on the DV signal, if the O sensor input (AQ-AQ) terminals is < Vdc or the sensor has failed, the motor will drive DV MAX in the occupied mode. When power is cut to the economizer (fan is off) then the damper will spring return closed. NOTES: Power Exhaust, DV and Free ooling have setpoints and LED indications. For models with a B terminal (W7): No power to B: cooling mode, free cool enabled. Module follows logic detailed above. V power to B: heating mode, free cool disabled. Actuator drives to minimum position or DV MAX whichever is the higher of the two. When power is cut to the economizer (fan is off) then the damper will spring return closed. For models with an O terminal (W7): V power to O: cooling mode, free cool enabled. Module follows logic detailed above. No power to O: heating mode, free cool disabled. Actuator drives to minimum position or DV MAX whichever is the higher of the two. When power is cut to the economizer (fan is off) then the damper will spring return closed

8 W7, W7, W7 EONOMIZE LOI MODULES SETTINS AND ADJUSTMENTS AUTION Equipment Damage Hazard. Excessive force can damage potentiometer controls. Use a small screwdriver or the plastic tool provided with the economizer when adjusting all potentiometers located on the unit. Potentiometers with screwdriver adjustment slots, located on device face, provide adjustments for several parameters (see Fig. for locations on device): DV setpoint. Minimum damper position. DV maximum damper position. Enthalpy changeover. Exhaust setpoint. EXHAUST SETPOINT LED LIHTS WHEN EXHAUST ONTAT IS MADE MINIMUM DAMPE POSITION SETTIN MAXIMUM DAMPE DEMAND ONTOL VENTILATION SETPOINT LED LIHTS WHEN DEMAND ONTOL VENTILATION INPUT IS ABOVE SETPOINT DEMAND ONTOL VENTILATION SETPOINT S LED LIHTS WHEN OUTDOO AI IS SUITABLE FO FEE OOLIN ENTHALPY HANEOVE SETPOINT M060B Fig.. Potentiometer and LED locations (W7 shown). Demand ontrol Ventilation Setpoint The logic module modulates the outdoor damper to provide ventilation based on the -0 Vdc DV input (AQ-AQ terminals). With no cooling signal, the DV overrides the outdoor air damper when ventilation requires additional outdoor air. EXAMPLE: O sensor with to 0 Vdc output range 0 to 000 ppm. Two () Vdc is equal to 0 ppm, 0 Vdc is equal to 000 ppm, threshold is determined to be 000 ppm. DV potentiometer to be set at 6 Vdc. Adjust the potentiometer with a small screwdriver by turning the pot to the fully W then fully W positions to determine the end stops. Set the pot for 6 Vdc in the mid position. Adjusting Minimum and Maximum Positions The minimum position is defined by the minimum outdoor air flow required in the building during the occupied period. The MIN POS and DV MAX position potentiometers allow the installer to set the proper ventilation based on occupancy N P T AQ SO S N P T AQ SO V EXH V DV V Free ool B A Open EXH Set 0V DV Max 0V DV Set 0V D Min Pos B A D E W7 modules have the "E" enthalpy curve established by ASHAE standard 6.. When used with a O occupancy sensor the minimum position will modulate between the MIN POS pot setting and the DV MAX pot setting based on the O input to the AQ-AQ terminals from the O sensor located in the space. When a O sensor is NOT USED with the unit, the OA dampers will modulate based on the actions in Table. Setting the DV maximum position of the damper prevents the introduction of large amounts of hot or cold air into the space by preventing the dampers from opening 00% during a call for additional ventilation. On a call for cooling AND the OA is good for economizing, the unit will override the DV MAX setting and allow the dampers to drive full open. IMPOTANT With the DV maximum position set below the minimum position, the minimum position overrides the maximum position with the series units. NOTES: When the mixed air sensor takes control based on an increased requirement for cooling, it overrides the DV maximum position potentiometer and can drive the damper full-open. If the mixed air temperature drops to F, the mixed air sensor overrides the DV and closes the damper to protect from freezing the hot or chilled water coils. ontrol returns to normal once the mixed air temperature rises to 8 F. Some models of the W7 close the damper fully and others close the damper to minimum position. heck the label on the box for position of damper on freeze protection. If the O sensor should fail, the W7 defaults to DV maximum, providing minimum ventilation for the maximum design occupancy. Minimum Position Adjustment For detailed assistance in minimum position selection reference the Economizer Application uide (form 6-89) Ventilation section. The following provides basic guidelines for minimum position selection and adjustment: IMPOTANT Adjust the minimum position potentiometer to allow the minimum amount of outdoor air for building effluents, as required by local codes, to enter the building. This procedure requires use of a quality thermometer capable of reading to 0. F [0. ]. NOTE: Make ventilation adjustments with at least a 0 F [6 ] temperature difference between outdoor and return air.. alculate the appropriate mixed air temperature, see Equation. Equation will be used to set the damper positions for MIN POS and DV MAX. Without a DV sensor connected to AQ-AQ, use the MIN POS pot and this procedure to adjust the damper positions for minimum OA when the space is occupied. When using a DV sensor you will need to set the MIN POS and DV MAX positions using this procedure. DV MAX will be the same as the MIN POS above (without a DV sensor) and the MIN POS will lower than the DV MAX %.. Disconnect mixed air sensor from terminals T and T.. Place a jumper across terminals T and T

9 W7, W7, W7 EONOMIZE LOI MODULES. Ensure that either the factory-installed jumper is in place across terminals P and P or, if remote damper position is required, that it is wired according to Fig. 6 and the MIN POS potentiometer is turned fully clockwise.. onnect Vac across terminals T and T. 6. arefully adjust the potentiometer on the face of the device with a small screwdriver until the mixed air temperature reaches the calculated value. NOTE: Ensure that the sensed air is well mixed. 7. If all minimum (MIN POS) and maximum position (DV MAX) adjustments are complete, remove the T-T jumper and reconnect the mixed air sensor. Equation.Formula to aid minimum position adjustment. ( T O OA) ( T A) = T M Where: T O = Outdoor air temperature OA = Percent of outdoor air T = eturn air temperature A = Percent of return air T M = esulting mixed air temperature NOTE: EXAMPLE: The following sample calculation uses only Fahrenheit temperature. Assume local codes require 0% outdoor air during occupied conditions, outdoor air is 60 F and return air is 7 F. Under these conditions, what is the temperature of the mixed air? ( F) ( F) = 6.0 F 67. F = 7. F Mixed air will be 7. F when OA is 60 F and A is 7 F with 0 percent outdoor air entering the building. NOTE: If setting MIN POS and DV MAX position, you will need to adjust the MIN POS for the building effluent (low occupancy) airflow and adjust the DV MAX using the minimum airflow for maximum occupancy. Enthalpy hangeover Setpoint Outdoor Enthalpy hangeover Setpoint (Single Enthalpy) Single enthalpy compares the outdoor air conditions to a set A,B,, or D (E) curve for humidity and temperature conditions. The installer must set the onboard potentiometer to the desired curve. The outdoor enthalpy changeover setpoint returns the outdoor air damper to minimum position. Enthalpy setpoint scale markings, located in the device, are A, B,, and D for the W7A, W7 and W7. See Fig. 7 for the corresponding control point. Enthalpy setpoint scale markings for the W7 are A,B,,D and E. See Fig. 8 for the corresponding control points. The factory-installed 60-ohm jumper must be in place across terminals S and S. Temperature and humidity conditions to the left of the selected curve will allow the dampers to open for free cooling, temperature, and humidity conditions to the right of the curve will return the OA damper to minimum position (this is either MIN POS if using a O sensor or DV MAX if a O sensor is NOT used). Differential Enthalpy hangeover Setting Differential enthalpy control uses two 700 Enthalpy Sensors connected to one logic module. The logic module compares outdoor air to return air. NOTE: Turn the enthalpy setpoint potentiometer fully clockwise to the D (or E setting for W7) setting. The logic module selects the lower enthalpy air (return or outdoor) for cooling. For example, when outdoor air has lower enthalpy than return air, the module calls to open the outdoor air damper to bring in outdoor air for free cooling. Exhaust Setpoint The exhaust setpoint determines when the exhaust fan runs based on damper position. When the exhaust fan call is made, the module provides a 60 ±0 second delay before exhaust fan activation. This delay allows the damper to reach the appropriate position to avoid unnecessary fan overload. NOTES: EF and EF are V dry contacts only. An external line voltage contactor is required to operate the exhaust fan. When the exhaust fan is deactivated the EF and EF contacts open immediately. Adjustable Exhaust Setpoint These logic modules have an adjustable exhaust setpoint. This potentiometer allows the installer to adjust the damper position at which the EF and EF exhaust fan contacts are made. NOTE: The 60 ±0 second delay allows the outdoor damper to reach the exhaust setpoint prior to the EF and EF contacts being made. emote Minimum Position ontrol emote control of outdoor air dampers is desirable when requiring temporary additional ventilation. The addition of a S96B8 emote Potentiometer allows occupants to open or close the dampers beyond minimum position for modified ventilation. onnect the potentiometer as shown in Fig. 6. For economizer applications using remote position potentiometers, the action of the outdoor damper matches the MIN POS action in Table. IMPOTANT Freeze protection logic takes priority over all signals. For details, see the notes in the Adjusting Minimum and Maximum Positions section. NOTE: For additional wiring applications, refer to the Design and Application uide for Honeywell Economizers (form 6-89)

10 W7, W7, W7 EONOMIZE LOI MODULES S96B8 EMOTE POTENTIOMETE W LOSE W B P P MINIMUM POSITION ADJUSTMENT W EONOMIZE M060A Fig. 6. S96B8 emote Potentiometer used with logic module for remote damper control. ONTOL ONTOL POINT UVE APPOX. F ( ) AT 0% H A 7 () B 70 () 67 (9) D 6 (7) ENTHALPY BTU PE POUND DY AI () 0 () (7) 0 (0) D 60 (6) A () B 6 (8) 70 () 7 () (7) (9) 0 90 () 0 9 () 0 00 (8) ELATIVE HUMIDITY (%) 0 () 0 () 0 D B A () 0 () (7) 0 (0) () 60 (6) 6 (8) 70 () 7 () 80 (7) APPOXIMATE DY BULB TEMPEATUE F ( ) HIH LIMIT UVE FO W70D, W7, W7, W7, W70B. 8 (9) 90 () 9 () 00 (8) 0 () 0 () M60 Fig. 7. W7A, W7, W7 performance characteristics for enthalpy changeover settings

11 W7, W7, W7 EONOMIZE LOI MODULES ONTOL ONTOL POINT UVE APPOX. F ( ) AT 0% H A 7 () B 70 () 67 (9) D 6 (7) E () ENTHALPY BTU PE POUND DY AI () 0 () (7) E 0 (0) D 60 (6) A () B 6 (8) 70 () 7 () (7) (9) 0 90 () 0 9 () 0 00 (8) ELATIVE HUMIDITY (%) 0 () 0 () 0 E D B A () 0 () (7) 0 (0) () 60 (6) 6 (8) 70 () 7 () 80 (7) APPOXIMATE DY BULB TEMPEATUE F ( ) HIH LIMIT UVE FO W70D, W7, W7, W7, W70. 8 (9) 90 () 9 () 00 (8) 0 () 0 () M879A Fig. 8. W7 performance characteristics for enthalpy changeover settings

12 W7, W7, W7 EONOMIZE LOI MODULES N T T N 70B MIXED AI O 706A DISHAE AI P P T T MINIMUM POSITION ADJUSTMENT Vac HOT Vac OM VA HOT VA OM -0 VD ONTOL SINAL OUTPUT -0 VD INDOO AI AQ SO AQ SO 700 OUTDOO AI ENTHALPY S S S 60 OHM ESISTO W7 EF EF M7 L L EXHAUST Y Y W Y Y OOL OOL W A A H X T700/Q700 HVA EQUIPMENT THEMOSTAT TEMINAL STIP POWE SUPPLY. POVIDE DISONNET MEANS AND OVELOAD POTETION AS EQUIED. W W A A HEAT HEAT L L ENSUE THAT TANSFOME IS SIZED TO HANDLE THE EXTA LOAD OF THE EONOMIZE AND ATUATO. USE THE SAME TANSFOME FO T700 AND EONOMIZE. FATOY INSTALLED 60 OHM, WATT, % ESISTO SHOULD NOT BE EMOVED. DIFFEENTIAL ENTHALPY NOT EOMMENDED FO USE WITH SINLE-STAE OOLIN SYSTEMS O SINLE-STAE OOLIN THEMOSTATS. T700 TEMINALS A AND A AE ONNETED WHEN OMMEIAL THEMOSTAT IS IN THE OUPIED MODE. EF AND EF AE DY ONTATS IN THE LOI MODULE. M076F Fig. 9. W7 used with M7 Damper Motor and T700 Thermostat

13 W7, W7, W7 EONOMIZE LOI MODULES N T T N 70B MIXED AI O 706A DISHAE AI P P T T MINIMUM POSITION ADJUSTMENT Vac HOT Vac OM VA HOT VA OM -0 VD ONTOL SINAL OUTPUT -0 VD INDOO AI AQ SO AQ SO 700 OUTDOO AI ENTHALPY S S S 60 OHM ESISTO W7 EF EF M7 L L EXHAUST Y Y Y OOL W Y OOL W AUX W HEAT W HEAT A H X T70 HVA EQUIPMENT THEMOSTAT TEMINAL STIP POWE SUPPLY. POVIDE DISONNET MEANS AND OVELOAD POTETION AS EQUIED. L L ENSUE THAT TANSFOME IS SIZED TO HANDLE THE EXTA LOAD OF THE EONOMIZE AND ATUATO. THE SAME TANSFOME AN BE USED FO THE OMMEIAL THEMOSTAT AND ATUATO. IF SEPAATE HEATIN AND OOLIN TANSFOMES AE USED, EMOVE JUMPE AT THEMOSTAT. T70 - TEMINAL AUX IS POWEED BY THE HEATIN TANSFOME (H). IF POWEIN THE EONOMIZE TEMINAL N WITH THE THEMOSTAT TEMINAL AUX, BE SUE THE EONOMIZE IS POWEED BY THE SAME TANSFOME AS TEMINAL AUX. IF NOT, USE AN ISOLATION ELAY TO POWE N. FATOY INSTALLED 60 OHM, WATT, % ESISTO SHOULD NOT BE EMOVED. DIFFEENTIAL ENTHALPY NOT EOMMENDED FO USE WITH SINLE-STAE OOLIN SYSTEMS O SINLE-STAE OOLIN THEMOSTATS. EF AND EF AE DY ONTATS IN THE LOI MODULE. M67B Fig. 0. W7 used with M7 Damper Motor and T70 Thermostat

14 W7, W7, W7 EONOMIZE LOI MODULES N T T N 70B MIXED AI O 706A DISHAE AI P P T T MINIMUM POSITION ADJUSTMENT Vac HOT Vac OM VA HOT VA OM -0 VD ONTOL SINAL OUTPUT -0 VD INDOO AI AQ SO AQ SO 700 OUTDOO AI ENTHALPY S S S 60 OHM ESISTO W7 EF EF M7 L L EXHAUST Y Y Y OOL W Y OOL W A W HEAT W HEAT A X TB70 O TB80 HVA EQUIPMENT THEMOSTAT TEMINAL STIP POWE SUPPLY. POVIDE DISONNET MEANS AND OVELOAD POTETION AS EQUIED. L L ENSUE THAT TANSFOME IS SIZED TO HANDLE THE EXTA LOAD OF THE EONOMIZE AND ATUATO. THE SAME TANSFOME AN BE USED FO THE OMMEIAL THEMOSTAT AND ATUATO. IF SEPAATE HEATIN AND OOLIN TANSFOMES AE USED, EMOVE JUMPE AT THEMOSTAT. TB70 - TEMINAL A IS POWEED BY THE OOLIN TANSFOME (). TB80 - TEMINAL A IS POWEED BY THE HEATIN TANSFOME (). IF POWEIN THE EONOMIZE TEMINAL N WITH THE THEMOSTAT TEMINAL A, BE SUE THE EONOMIZE IS POWEED BY THE SAME TANSFOME AS TEMINAL A. IF NOT, USE AN ISOLATION ELAY TO POWE N. FATOY INSTALLED 60 OHM, WATT, % ESISTO SHOULD NOT BE EMOVED. DIFFEENTIAL ENTHALPY NOT EOMMENDED FO USE WITH SINLE-STAE OOLIN SYSTEMS O SINLE-STAE OOLIN THEMOSTATS. EF AND EF AE DY ONTATS IN THE LOI MODULE. M68B Fig.. W7 used with M7 Damper Motor and TB70 or TB80 Thermostats

15 W7, W7, W7 EONOMIZE LOI MODULES ~ N N T T F 70B MIXED AI O 706A DISHAE AI P P T T MINIMUM POSITION ADJUSTMENT Vac HOT Vac OM MS7XXX HONEYWELL ATUATO -0 VD INDOO AI AQ AQ SO SO S EF EF 700 OUTDOO AI ENTHALPY S S 60 OHM ESISTO W7 Y Y OOL L L Y EXHAUST W W HEAT UNOUPIED W W HEAT ST6008 TIME 6 H X OMMEIAL THEMOSTAT FD FD HVA EQUIPMENT TEMINAL STIP DELAY ELAY OUPIED L L POWE SUPPLY. POVIDE DISONNET MEANS AND OVELOAD POTETION AS EQUIED. ENSUE THAT TANSFOME IS SIZED TO HANDLE THE EXTA LOAD OF THE EONOMIZE AND ATUATO. 6 FATOY INSTALLED 60 OHM, WATT, % ESISTO SHOULD NOT BE EMOVED. DIFFEENTIAL ENTHALPY NOT EOMMENDED FO USE WITH SINLE-STAE OOLIN SYSTEMS O SINLE-STAE OOLIN THEMOSTATS. EF AND EF AE DY ONTATS IN THE LOI MODULE. SEE WIIN DIAAMS FO T70 AND TB70/TB80. TIME LOK IS AN OPTION TO USIN OUPIED ONTATS ON THE OMMEIAL THEMOSTAT. M69 Fig.. W7 used in single-stage cooling system with single enthalpy changeover and Honeywell actuator and time clock for occupancy

16 W7, W7, W7 EONOMIZE LOI MODULES N T T ~ N F 70B MIXED AI O 706A DISHAE AI P P T T MINIMUM POSITION ADJUSTMENT S K Vac HOT Vac OM MS7XXX HONEYWELL ATUATO -0 VD INDOO AI AQ AQ SO SO S K S EF EF S 700 OUTDOO AI ENTHALPY S W OHM ESISTO Y Y W T60 AMBIENT LOKOUT ONTOL 0 F SETPOINT Y Y OOL OOL L L EXHAUST 8 W W H X T700 O T87 THEMOSTAT W W FD FD HVA EQUIPMENT TEMINAL STIP HEAT HEAT DELAY ELAY UNOUPIED 6 ST6008 TIME OUPIED L L 9 POWE SUPPLY. POVIDE DISONNET MEANS AND OVELOAD POTETION AS EQUIED. ENSUE THAT TANSFOME IS SIZED TO HANDLE THE EXTA LOAD OF THE EONOMIZE AND ATUATO. 6 USE THE FOLLOWIN ONTATS INSTEAD OF TIME FO T700, USE A AND A TEMINALS. FO T70 USE AUX TEMINAL. FO TB70 O TB80 USE A TEMINAL THE TEMINALS AE ONNETED WHEN THEMOSTAT IS IN THE OUPIED MODE. S IS AN ELETONI SWITH THAT LOSES WHEN POWEED BY A VA INPUT. FO T700 ONLY FATOY INSTALLED 60 OHM, WATT, % ESISTO SHOULD BE EMOVED ONLY WHEN A 700 ENTHALPY IS ADDED TO S AND S FO DIFFEENTIAL ENTHALPY EF AND EF AE DY ONTATS IN THE LOI MODULE. SEE WIIN DIAAMS FIS 9 AND 0 FO T70 AND TB70/TB80. TIME LOK IS AN OPTION TO USIN OUPIED ONTATS ON THE OMMEIAL THEMOSTAT. M660B Fig.. W7 used in two-stage cooling system with Honeywell Series 7 Actuator and time clock for occupancy

17 W7, W7, W7 EONOMIZE LOI MODULES L L N N T T F MS7XXX HONEYWELL ATUATO 70B MIXED AI O 706A DISHAE AI P P T T MINIMUM POSITION ADJUSTMENT Vac HOT Vac OM ~ F MS7XXX HONEYWELL ATUATO UNOUPIED ST6008 TIME 7-0 VD INDOO AI 700 OUTDOO AI ENTHALPY S AQ SO S AQ SO S 60 OHM ESISTO W7 EF EF L OUPIED L ~ POWE SUPPLY. POVIDE DISONNET MEANS AND OVELOAD POTETION AS EQUIED. ENSUE THAT TANSFOME IS SIZED TO HANDLE THE LOAD OF ALL ATUATOS. USE THE FOLLOWIN ONTATS INSTEAD OF TIME FO T700, USE A AND A TEMINALS. FO T70 USE AUX TEMINAL. FO TB70 O TB80 USE A TEMINAL THE TEMINALS AE ONNETED WHEN OMMEIAL THEMOSTAT IS IN THE OUPIED MODE. FATOY INSTALLED 60 OHM, WATT, % ESISTO SHOULD BE EMOVED ONLY WHEN A 700 ENTHALPY IS ADDED TO S AND S FO DIFFEENTIAL ENTHALPY. EF AND EF AE DY ONTATS IN THE LOI MODULE. Y Y W W H X OMMEIAL THEMOSTAT 6 Y Y W W FD FD HVA EQUIPMENT TEMINAL STIP OOL OOL HEAT HEAT DELAY ELAY L L EXHAUST L L 6 SEE WIIN DIAAMS FIS 9 AND 0 FO T70 AND TB70/TB80. 7 TIME LOK IS AN OPTION TO USIN OUPIED ONTATS ON THE OMMEIAL THEMOSTAT. M66B Fig.. W7 controlling parallel-wired Honeywell Series 7 Actuators and time clock for occupancy

18 W7, W7, W7 EONOMIZE LOI MODULES F O N P P MINIMUM POSITION ADJUSTMENT T Vac HOT T Vac OM MS7XXX HONEYWELL ATUATO 70B DISHAE AI ~ -0 VD INDOO AI T T AQ AQ SO SO S EF EF S 700 OUTDOO AI ENTHALPY S W7 60 OHM ESISTO A A Y Y OOL Y Y OOL L L W W HEAT EXHAUST W W HEAT H X O O L L T700 THEMOSTAT HVA EQUIPMENT TEMINAL STIP POWE SUPPLY. POVIDE DISONNET MEANS AND OVELOAD POTETION AS EQUIED. EF AND EF AE DY ONTATS IN THE LOI MODULE. FATOY INSTALLED 60 OHM, WATT, % ESISTO SHOULD BE EMOVED ONLY WHEN A 700 ENTHALPY IS ADDED TO S AND S FO DIFFEENTIAL ENTHALPY. T700 TEMINALS A AND A AE ONNETED WHEN THEMOSTAT IS IN THE UNOUPIED MODE. SEE T70 AND TB70/TB80 WIIN. W7: B TEMINAL W7: O TEMINAL M968E Fig.. W7, W7 controlling heat pump system

19 W7, W7, W7 EONOMIZE LOI MODULES VISION PO IAQ Y Y H EIM T T (OMMON) M997 Fig. 6. Vision Pro IAQ with EIM connected to a W79 Economizer W79 SELET OPTION UNDE THEMOSTAT INSTALLE SETUP 000 = 07 = E 00 = HVA EQUIP TEMINAL STIP Y OOL Y OOL OM HOT SELET OPTION UNDE THEMOSTAT INSTALLE SETUP 000 = 07 = E 00 = VISION PO IAQ Y Y V H T EIM Fig. 7. Vision Pro IAQ with EIM connected to a W7 Economizer (With Morning Warm-up Enabled) N N Y Y W7 HVA EQUIP TEMINAL STIP T T (OMMON) OOL OOL OM HOT M

20 W7, W7, W7 EONOMIZE LOI MODULES HEKOUT AND TOUBLESHOOTIN heckout requires a 9V battery, 60 ohm,.k ohm,.6k ohm, and 6.8K ohm resistors. Use Table and Fig. 8 for checkout. AUTION Equipment Damage Hazard. Excessive force can damage potentiometer controls. Use a small screwdriver when adjusting enthalpy changeover and minimum damper position controls. D VOLTMETE S 700 W7 N N P P T T AQ AQ SO SO S S V EXH V DV V Free ool B A EXH Set 0V Min Pos Open DV Max 0V DV Set 0V D 60 OHM ESISTO INSET D VOLTMETE BETWEEN AQ AND AQ FO HEKOUT AND TOUBLESHOOTIN. JUMPE USED FO SINLE ENTHALPY ONTOL. M06 Fig. 8. Meter location for checkout and troubleshooting (W7 shown). Table. heckout for W7, W7, W7 Economizers onnected to Honeywell Actuator. Step heckout Procedure Proper esponse. HEKOUT PEPAATION FO EONOMIZIN ONLY Disconnect power at T and T. All LED are off; Exhaust Fan contacts are open. Disconnect devices at P and P. Jumper P to P (defaults to on board MIN POS potentiometer). Place.6K ohm resistor across T and T (Blue sleeve- provides input to economizer that the MAT is between 0-F). Jumper T to (call for cooling from the thermostat). W7 only: Jumper T to N (places economizer in occupied mode). If connected, remove 700 Enthalpy Sensor from terminals S O and. onnect.k ohm, from 07EJM heckout esistor kit, (purple sleeve) across terminals S O and (makes OA enthalpy high). Place 60 ohm resistor (white sleeve) across S and (makes return enthalpy lower than OA). Set MIN POS and DV MAX potentiometers fully W. Turn DV setpoint potentiometer mid position (this sets the DV ventilation at approximately 000 ppm). Turn exhaust potentiometer to mid position (motor will be approximately 0% open when the exhaust fan contacts make). Set enthalpy potentiometer to D. W7 only: Jumper T to O. Apply power ( Vac) to terminals T and T

21 W7, W7, W7 EONOMIZE LOI MODULES Table. heckout for W7, W7, W7 Economizers onnected to Honeywell Actuator. (ontinued) Step heckout Procedure Proper esponse. DIFFEENTIAL ENTHALPY Execute step one, heckout Preparation. Turn DV MAX to mid position. Place 60 ohm resistor across S O and (white sleeve resistor makes OA enthalpy low). Place.K ohm resistor across S and (purple sleeve resistor makes A enthalpy high). emove 60 ohm resistor from S O and.. SINLE ENTHALPY Free cool LED turns on; motor drives to approximately degrees (half) open. Free cool LED turns off; motor drives closed Execute step one, heckout Preparation. Turn DV MAX to mid position. Set enthalpy potentiometer to A (fully W). Free cool LED turns on; motor drives to approximately degrees (half) open. Set enthalpy potentiometer to D or E for W7 (fully W). Free cool LED turns off; motor drives closed. DV AND EXHAUST Execute step one, heckout Preparation. LED for both DV and Exhaust should be off. Turn DV MAX to mid position. Motor drives to mid position, degrees open. Turn MIN POS fully W. Motor drives fully open. Turn MIN POS and DV MAX to fully W. Motor drives closed. Turn DV MAX to mid position. onnect 9V battery positive to AQ and negative to AQ. emove jumper from N terminal (economizer goes into not occupied mode). Adjust DV MAX towards W. Adjust DV MAX to fully W. econnect jumper to N terminal. Adjust DV MAX and MIN POS pots. Adjust DV MAX and MIN POS pots to fully W. emove power from N terminal adjust MIN POS towards W Adjust DV MAX towards W.. MINIMUM AND MAXIMUM POSITION LED for both DV and Exhaust turn on. Actuator drives to degrees open. Motor remains at degrees open. Motor will move to position set by DV MAX pot. Motor will drive closed. Motor will drive to the most open position of the pots. Motor should not move. Motor will move to position set by DV MAX pot. Execute step one, heckout Preparation. onnect 9V battery positive to AQ and negative to AQ. Adjust DV MAX DV LED turns on. Actuator drives to degrees open. potentiometer to mid position. Turn DV maximum position potentiometer to fully W. Actuator drives fully closed. Turn minimum position potentiometer to midpoint. Actuator drives to degrees open. Turn minimum position potentiometer fully W. Actuator drives fully open. Turn MIN POS to fully W. Actuator drives fully closed. W7: emove jumper from T and N. Actuator drives fully closed. W7: Jumper T to O. 6. MIXED AI INPUT Execute step one, heckout Preparation. Turn DV MAX to mid position; set enthalpy potentiometer to A. Free cool LED turns on. Actuator drives to degrees open. emove.6k ohm resistor (green sleeve) and place jumper from T and T. Actuator drives to degrees open. emove jumper from T and T and leave open. Actuator drives fully closed

22 W7, W7, W7 EONOMIZE LOI MODULES Table. heckout for W7, W7, W7 Economizers onnected to Honeywell Actuator. (ontinued) Step heckout Procedure Proper esponse 7. HEAT PUMP INPUT - W7, W7 ONLY Execute step one, heckout Preparation. Turn DV MAX to mid position; set enthalpy potentiometer to A. Free cool LED turns on. Actuator drives to degrees open. W7: Jumper T to B. W7: emove jumper from T and O. Free cool LED turns off. Actuator drives fully closed

23 W7, W7, W7 EONOMIZE LOI MODULES

24 W7, W7, W7 EONOMIZE LOI MODULES Automation and ontrol Solutions Honeywell International Inc. 98 Douglas Drive North olden Valley, MN Honeywell Limited-Honeywell Limitée Dynamic Drive Toronto, Ontario MV Z9 customer.honeywell.com U.S. egistered Trademark 00 Honeywell International Inc M.S. ev. 0-0 Printed in U.S.A.