Honeywell W7753A Ventilation Hood User Manual
Contents
1. GROUND GROUND W7753A GROUND M12682 Fig 5 Power wiring details for two or more Excel 10s per transformer LINE VOLTAGE GREATER THAN 150 VAC W7753A GROUND Ar THE W7750 CONTROLLER IS USED IN UL 1995 EQUIPMENT AND THE PRIMARY POWER IS MORE THAN 150 VOLTS GROUND ONE SIDE OF TRANSFORMER SECONDARY M12680 Fig 6 Transformer power wiring details for one Excel 10 used in UL 1995 equipment U S only Communications Refer to E Bus Wiring Guidelines form 74 2865 for a complete description of E Bus network topology rules Approved cable types for E Bus communications wiring are Level IV 22 AWG 0 34 mm plenum and non plenum rated unshielded twisted pair solid conductor wire For nonplenum areas U S part AK3781 one pair or U S part AK3782 two pair can be used In plenum areas U S part AK3791 one pair or U S part AK3792 two pair can be used Communications wiring can be run in a conduit if needed with non switched 24 Vac or sensor wiring If a longer E Bus NOTES For Communications Wiring All field wiring must conform to local codes and ordinances or as specified on the installation drawings Approved cable types for E Bus communications wiring is Level IV 22 AWG 0 34 mm plenum and non plenum rated unshielded twisted pair solid conductor wires For nonplenum areas U S part AK3781 one pair or U S part AK3782 two pair2. AN TURN POWER OFF BEFORE SETTING THE DIP SWITCHES M12694 Fig 13 Typical PWM Valve Actuator to W7753A For note 2 refer to Fig 8 NOTE Make sure to set the Configuration DIP Switch as shown in Fig 13 Switches 1 through 3 set the timing of the ML7984B valve actuator to match the W7753A outputs 0 1 sec Min with a max time of 25 6 sec Switch 4 determines the action of the actuator Off Direct Acting On Reverse Acting CHECKOUT W7753A Checkout Step 1 Check Installation and Wiring Inspect all wiring connections at the W7753A terminals and verify compliance with installation job drawings If any wiring changes are required first be sure to remove power from the W7753A TRIAC EQUIVALENT CIRCUIT controller before starting work Pay particular attention to UNIT 24 Vac power connections Verify that multiple controllers powered by the same transformer are wired with the transformer secondary connected to the same input CONTROLLER terminal numbers on each W7753A See Fig 5 Controller configurations are not necessarily limited to three controllers but the total power draw including accessories cannot exceed 100 VA when powered by the same transformer U S only See System Engineering form 74 2964 for power wiring recommendations Controller wiring Be sure that each controller is wired terminal 1 on the W7753A to a verified earth ground REMIDITY using a wire run as short as possible with the heaviest 21010
3. can be used In plenum areas U S part AK3791 one pair or U S part AK3792 two pair can be used Unswitched 24 Vac power wiring can be run in the same conduit as the E Bus cable Do not bundle output wires with sensor digital input or communications E Bus wires Do not use different wire types or gauges on the same E Bus segment The step change in line impedance characteristics would cause unpre dictable reflections on the E Bus When using dif ferent types is unavoidable use a Q7751A Router at the junction In noisy high EMI environments avoid wire runs parallel to noisy power cables motor control cen ters or lines containing lighting dimmer switches and keep at least 3 in 76 mm of separation between noisy lines and the E Bus cable Each daisy chained E Bus segment that is on one side of a Q7751A B Router can contain up to 60 Excel 10s and has a length greater than 1640 ft 500m must have two E Bus 209541B Termination Modules one at each end of the daisy chain wiring run Make sure that neither of the E Bus wires is grounded NOTE Ifa 209541B Termination Module is required at a the UV controller connect two of the three termination module wires to the E Bus terminals Selecting the appropriate two wires depends on the E Bus network topology Refer to the E Bus Wiring Guidelines form 74 2865 and the Excel 10 FTT Termination Module Installation Instructions form 95 7554 For example using a doubly termin
4. egistered Trademarl Printed in U S A on recycled Honeywell 2009 Honeywell International Inc paper containing at least 10 95 7520 02 K K Rev 03 09 post consumer paper fibers
5. VOLI gauge wire available up to 14 AWG 2 0 mm with a minimum of 18 AWG 1 0 mm for each controller in the group See Fig 4 VENTILATOR NEaRTH GROUND WIRE LENGTH SHOULD BE HELD TO A MINIMUM USE Verify Triac wiring to external controllers uses the proper THE HEAVIEST GAUGE WIRE AVAILABLE UP TO 14 AWG 2 O MM2 WITH load power 24 Vac hot terminal terminal 25 on the A MINIMUM OF 18 AWG 1 0 MM FOR EARTH GROUND WIRE W7753A J TO ASSURE PROPER ELECTRICAL CONTACT WIRESMUST BE TWISTED TOGETHER BEFORE INSERTIONINTO THE TERMINAL BLOCK M12696 NOTE All wiring must comply with applicable electrical codes and ordinances or as specified on installation Fig 14 Typical 2 to 10 Volt DC humidity sensor to wiring diagrams W7753A For note 2 refer to Fig 8 95 7520 02 8 Verify Termination Module Placement The installation wiring diagrams should indicate the locations for placement of 209541B Termination Module s Refer to the E Bus Wiring Guidelines form 74 2865 and the Excel 10 FTT Termination Module Installation Instructions form 95 7554 Correct placement of the termination module s is required for proper E Bus communications Step 2 Startup W7753A CONTROLLER STATUS LED The LED on the front and center of a W7753A Controller provides a visual indication of the status of the controller See Fig 15 When the W7753A receives power the LED should appear in one of the following allowable states Off n
6. Very Cold Temperature detected inside the Unit Ventilator Cabinet Control closes OA Damper and open heat valve OAQ ALARM 13 The configured outdoor air quality sensor has detected CO or CO levels that exceeds OaQStPt plus 30 ppm hysteresis When there is an OAQ ALARM the economizer damper is closed RETURN TO NORMAL 128 Return to no alarm after being in an alarm condition This code is added numerically to another alarm code to indicate that the alarm condition has returned to normal ALARM NOTIFY DISABLED 255 The alarm reporting was turned off by the nviManualMode No more alarms are reported until nviManualMode turns on alarm reporting or upon application restart NOTE The node can be reset by switching the node to MANUAL and then switching to the normal operating mode using DestManMode Also the Excel 10 network variables AlarmLogX where X is 1 through 5 that store the last five alarms to occur in the controller are available These points can be viewed through XBS XI584 or E Vision 95 7520 02 11 EXCEL 10 W7753A UNIT VENTILATOR CONTROLLER 95 7520 02 EXCEL 10 W7753A UNIT VENTILATOR CONTROLLER Automation and Control Solutions Honeywell International Inc Honeywell Limited Honeywell Limit e 1985 Douglas Drive North 35 Dynamic Drive Golden Valley MN 55422 Toronto Ontario M1V 4Z9 Honeywell GmbH B blinger StraRe 17 D 71101 Sch naich customer honeywell com U S Registered Trad k
7. Excel 10 Honeywell W7753A Unit Ventilator Controller PRODUCT DESCRIPTION The W7753A Unit Ventilator Controller is a Free Topology Transceiver FTT LONMARK Compliant Unit Vent controller in the Excel 10 family product line This controller can be used to monitor control HVAC equipment lighting and other miscellaneous loads in a distributed network The controller is field mounted to the equipment that it controls and the controller wiring is attached to the screw terminals located on the controller see Fig 1 I A1 2 AL3 g ND AI dn ERE 9 hio fi 12 43 TET AUTOS INSTALLATION INSTRUCTIONS The W7753A Controller communicates via the 78 kilobaud Echelon LonWorks E Bus Network Allowable input output connections consist of wall module points plus two additional resistive sensor inputs two voltage current inputs four digital inputs and eight digital Triac outputs For the W7753A any hardware driven by the Triac outputs must have a minimum current draw when energized of 25 mA and a maximum current draw of 500 mA E M12688 Fig 1 Excel 10 W7753A Unit Ventilator Controller 95 7520 02 C EXCEL 10 W7753A UNIT VENTILATOR CONTROLLER INSTALLATION Mount the W7753A in a position that allows clearance for wiring servicing and controller removal Avoid mounting the WT7753A in areas where acid fumes or other deteriorating vapors can attack the metal parts of th
8. PY 4 TO 20mA JN EARTH GROUND WIRE LENGTH SHOULD BE HELD TO A MINIMUM USE THE HEAVIEST GAUGE WIRE AVAILABLE UP TO 14 AWG 2 0 MM WITH A MINIMUM OF 18 AWG 1 0 MM FOR EARTH GROUND WIRE A MAKE SURE ALL TRANSFORMER POWER WIRING IS AS SHOWN A REVERSING TERMINATIONS RESULTS IN EQUIPMENT TO ASSURE PROPER ELECTRICAL CONTACT WIRESMUST BE TWISTED MALFUNCTION TOGETHER BEFORE INSERTIONINTO THE TERMINAL BLOCK M12695 A ka OS SS cM REINT ROEE Fig 12 Typical 4 to 20 mA Humidity and Enthalpy Sensor A USE 1 4 IN 6 MM PNEUMATIC TUBING MINIMUM BRANCH LINE to W7753A For note 2 refer to Fig 8 MUST BE 6 FT 1 8M OR LONGER oe Fig 11 Typical Pneumatic Transducer to W7753A 7 95 7520 02 EXCEL 10 W7753A UNIT VENTILATOR CONTROLLER ML7984B PWM VALVE ACTUATOR 2 H 24 VAC PWM OUTPUT FROM CNTRL OUT 1 WIR 24 VAC COM OUT PWM VALVE Jo T eo T TO T E ACTUATOR 1234 W7753A TRIAC EQUIVALENT CIRCUIT OFF on nu N UNIT CONFIGURATION DIP m VENTILATOR LOCATED ADJACENT TO THE INPUT TERMINAL BLOCK CONTROLLER EARTH GROUND WIRE LENGTH SHOULD BE HELD TO AMINIMUM USE THE HEAVIEST GAUGE WIRE AVAILABLE UP TO 14 AWG 2 0 MM WITH A MINIMUM OF 18 AWG 1 0 MM FOR EARTH GROUND WIRE Nro ASSURE PROPER ELECTRICAL CONTACT WIRES MUST BE TWISTED TOGETHER BEFORE INSERTION INTO THE TERMINAL BLOCK A MAKE SURE ALL TRANSFORMER POWER WIRING IS AS SHOWN REVERSING TERMINATIONS WILL RESULT IN EQUIPMENT MALFUNCTION
9. W7753A UNIT VENTILATOR CONTROLLER EEA EEE ECE wo TRIAC EQUIVALENT CIRCUIT 22 VDC OUT s gt gt 9 Y lt lt eup ZU SENSOR WALL MODULE OUTSIDE JARCO SENSOR M29164 Fig 9 Typical W7753A unit ventilator application wiring diagram with T7770F wall module For note 2 refer to 95 7520 02 Fig 8 WINDOW CONTACT CONTACT CLOSED WINDOWCLOSED E OCCUPANCY SENSOR CONTACT CLOSED OCCUPIED ET To z zr ze Ts To TT Tz To TT T9 wo TRIAC EQUIVALENT CIRCUIT W7753A UNIT VENTILATOR CONTROLLER 22 VDC OUT c o 4 JN EARTH GROUND WIRE LENGTH SHOULD BE HELD TO A MINIMUM USE THE HEAVIEST GAUGE WIRE AVAILABLE UP TO 14 AWG 2 0 MM WITH A MINIMUM OF 18 AWG 1 0 MM FOR EARTH GROUND WIRE fro ASSURE PROPER ELECTRICAL CONTACT WIRES MUST BE TWISTED TOGETHER BEFORE INSERTION INTO THE TERMINAL BLOCK A contacts MUST BE SUITABLE FOR DRY SWITCHING 5V AT 10 mA USE SEALED TYPE GOLD FLASHED OR PIMPLED CONTACTS M12692 Fig 10 Typical window and occupancy sensor wiring diagram For note 2 refer to Fig 8 EXCEL 10 W7753A UNIT VENTILATOR CONTROLLER MMC325 PNEUMATIC TRANSDUCER HAAA o DECREASE W7753A TRIAC EQUIVALENT CIRCUIT UNIT VENTILATOR CONTROLLER INCREASE PNEUMATIC 2 VDC OUT wo lt 4 GROUND 24 VAC COM HUMIDITY 4 TO 20mA W7753A UNIT VENTILATOR CONTROLLER ENTHAL
10. ated daisy chained bus topol ogy if controllers are on either end of an E Bus wire run mount the termination module on the appropri ate terminals as shown in Fig 7 network is required a Q7740A 2 way or Q7740B 4 way repeater can be added to extend the length of the E Bus Also a Q7751A Router can be added to partition the system into two segments and effectively double the length of the E Bus Only one router is allowed with each Excel 10 Zone Manager and each network segment can have a maximum of one repeater Pull the cable to each device on the E Bus and connect to communication terminals 14 and 15 W77534A 95 7520 02 4 EXCEL 10 W7753A UNIT VENTILATOR CONTROLLER W7753A W7753A W7753A PART NO 209541B ORANGE TERMINATION MODULE PART NO 209541B TERMINATION MODULE M12690 Fig 7 Termination modules place a wire nut on each remaining wire that is not connected to a controller or device NOTE When two or more wires are to be attached to the same terminal other than 14 AWG 2 0 mm be sure to twist them together Deviation from this rule can result in improper electrical contact See Fig 8 Wire to the terminal blocks as follows Wiring Details 1 Strip 3 8 in 10 mm insulation from the conductor The W7753A Controller has the terminal arrangements shown 2 Insert the wire in the required terminal location and in Fig 9 through 14 Conne
11. ction for operator access to the tighten the STEW to complete the termination I E Bus is provided by plugging the Serial LonTalk Adapter 3 Iftwo or more wires are being inserted into one terminal SLTA connector into the E Bus jack location strip 1 2 in 13 mm of insulation from the con ductors then twist the wires together a minimum of three NOTE If an Excel 10 Controller or Zone Manager is not turns before inserting them connected to a good earth ground the controller 4 Cutthe twisted end of the wires to 3 16 in 5 mm internal transient protection circuitry is compromised before inserting them into the terminal and tightening and the function of protecting the controller from the screw noise and power line spikes cannot be fulfilled This 5 Pull on each wire in all terminals to check for good can result in a damaged circuit board and require mechanical connection replacement of the controller Refer to job drawings for specific installation wiring diagrams A TWO 14 AWG 2 0 MM WIRES 1 STRIP 3 8 IN 10 MM FROM WIRES 2 TWIST WIRES TOGETHER 3 CUT TWISTED END OF WIRES TO 3 16 IN 5 MM TO BE ATTACHED AT ONE TERMINAL WITH PLIERS A MINIMUM BEFORE INSERTING INTO TERMINAL AND TIGHTENING OF THREE TURNS SCREW THEN PULL ON EACH WIRE IN ALL TERMINALS TO CHECK FOR GOOD MECHANICAL CONNECTION M10086 Fig 8 Attaching two or more wires at terminal blocks 5 95 7520 02 EXCEL 10 W7753A UNIT VENTILATOR CONTROLLER
12. e The control is shut down and disabled until power is cycled or the node is reset See NOTE 1 below SENSOR FAILURE 3 One or more sensors have failed FROST PROTECTION ALARM 4 The space temperature is below the frost alarm limit 42 8 F 6 C when the mode is FREEZE PROTECT The alarm condition remains until the temperature exceeds the alarm limit plus hysteresis INVALID SET POINT 5 One of the Setpoints is not in the valid range LOSS OF AIR FLOW 6 The Fan Status DI indicates that there is no air flow when the node is commanding the fan to run The control is shut down and disabled until power is cycled or the node is reset The alarm is not issued until FanFailTime seconds have elapsed since the loss of flow condition was first reported DIRTY FILTER 7 The pressure drop across the filter exceeds the limit and the filter requires maintenance The control runs normally SMOKE ALARM 8 The smoke detector has detected smoke and the node has entered an emergency state IAQ OVERRIDE 9 The indoor air quality sensor has detected that the indoor air quality is poorer than the desired standard and additional outdoor air is being brought into the conditioned space LOW LIM ECON CLOSE 10 The economizer has to close beyond the minimum position to prevent the discharge air temperature from going below the discharge temperature low limit DRIP PAN FULL 11 Drip pan maintenance is required Cooling control is disabled Fan continues to run FREEZE STAT 12
13. e controller or in areas where escaping gas or other explosive vapors are present See Fig 2 for mounting dimensions The controller enclosure on the W7753A is constructed of a sheet metal housing and a plastic factory snap on cover The controller mounts using two screws inserted through the plastic cover Use the screws appropriate for the mounting surface The W7753A can be mounted in any orientation Ventilation openings were designed into the cover to allow proper heat dissipation regardless of the mounting orientation The W7753A can also be mounted using DIN rail obtain locally If using DIN rail also purchase from Augat Inc part number 2TK2D DIN rail adapter two each See Fig 3 Es BYPASS hn GND SETPT Al 1 GND Ez ac Al 3 enp Al 4 voc E BUS feau DHM Vima _ VimA out AK ot al u s z zE Lusi o 5 5 8 143 5 3 16 132 6 152 M12689 Fig 2 W7753A mounting dimensions in in mm 95 7520 02 2 Wiring Fig 3 W7753A DIN rail mounting All wiring must comply with applicable electrical codes and ordinances or as specified on installation wiring diagrams Controller wiring on the W7753A is terminated to the screw terminal blocks located on the top and the bottom of the controller NOTES For multiple controllers operating from a single transformer the same side of the transformer secondary must be connected to the same power
14. ing one transformer IMPORTANT Use the heaviest gauge wire available up to 14 AWG 2 0 mm with a minimum of 18 AWG 1 0 mm for all power and earth ground wiring Screw type terminal blocks are designed to accept up to two 14 AWG 2 0 mm conductors one on each side of the terminal screw More than two wires that are 14 AWG 2 0 mm can be connected with a wire nut Include a pigtail with this wire group and attach the pigtail to one side of the terminal block OUTPUT DEVICE POWER TRANSFORMER TRIAC LINES TO ACTUATORS AND CONTACTORS AA W7753A CONNECT POWER TO TERMINALS 24 AND 25 GROUND M12681 Fig 4 Power wiring details one Excel 10 per transformer NOTES Unswitched 24 Vac power wiring can be run in the same conduit as the E Bus cable Maintain at least three inch 76 mm separation between Triac outputs and E Bus wiring throughout the installation See the following IMPORTANT on Heating and Cooling Equipment UL 1995 U S only IMPORTANT If the W7753A Controller is used on Heating and Cooling Equipment UL 1995 U S only and the transformer primary power is more than 150 volts connect the transformer secondary to earth ground see Fig 6 For these applications only one W7753A Excel 10 controller can be powered by each transformer 95 7520 02 EXCEL 10 W7753A UNIT VENTILATOR CONTROLLER
15. input terminal in each controller The ground terminal 1 on the W7753A must be connected to a verified earth ground for each controller in the group see Fig 5 Controller configurations are not necessarily limited to three controllers but the total power draw including accessories cannot exceed 100 VA when powered by the same transformer U S only See System Engineering form 74 2964 for power wiring recommendations All loads on an Excel 10 W7753A Controller must be powered by the same transformer that powers the Excel 10 W7753A Controller A W7753A Controller can use separate transformers for controller power and load power Keep the earth ground connection terminal 1 wire run as short as possible Refer to Fig 9 through 14 Do not connect the analog or digital ground terminals 5 8 11 27 and 30 to earth ground Refer to Fig 9 through 14 EXCEL 10 W7753A UNIT VENTILATOR CONTROLLER Power The 24 Vac power from an energy limited Class Power Source must be provided to each W7753A Controller To conform to Class II restrictions U S only transformers must not be larger than 100 VA A transformer that meets CE mark requirements and that meets the Low Voltage Directive LVD requirements must be used in Europe for all installations of this product More than one W7753A Controller can be powered by a single transformer Fig 4 shows power wiring details for a single controller and Fig 5 depicts multiple controllers us
16. n an Assign ID command is issued from the commissioning tool the node goes into the SERVICE MESSAGE mode for five minutes In the SERVICE MESSAGE mode pressing the service pin on the controller or the bypass button on a wall module causes the Service Message to be broadcast on the network All other functions are normal in the SERVICE MESSAGE mode Step 3 I O Tests The controller must be configured using the Excel 10 E Vision PC configuration tool Once this is done the W7753A can be commanded to MANUAL mode and each output can be exercised viewed to verify proper wiring connections and equipment operation See the Excel 10 E Vision Users Guide form 74 2588 for details on configuring and testing W7753A Controllers SERVICE PIN BUTTON M10094 Fig 16 Location of the service pin button Step 4 Verify Sequences of Operation For the detailed descriptions of the sequences of operation see the Excel 10 Unit Ventilator System Engineering form 74 2964 Appendix B 95 7520 02 EXCEL 10 W7753A UNIT VENTILATOR CONTROLLER Table 1 Excel 10 Alarms Name of alarm or error bit NO ALARM Alarm type number 0 No alarms presently detected INPUT NV FAILURE 1 One or more NV inputs have failed while receiving an update within their specified FAILURE DETECT TIME NODE DISABLED 2 The control algorithm stopped because the controller is in DISABLED MODE or FACTORY TEST mod
17. o power to the processor Continuous On processor is in initialized state Slow Blink controlling normal state Fast Blink when the Excel 10 has an alarm condition PUNA 4 2 I ZX 24 24 NAC 1 C Eom Our ddan ULO A An e N a N Y LEG ee M12697 Fig 15 LED location on W7753A ALARMS When an Excel 10 has an alarm condition it reports it to the central node on the E Bus typically the Excel 10 Zone Manager or Small Building Controller See Table 1 The information contained in an alarm message follows Subnet Number This is the E Bus subnet that contains the Excel 10 node that has the alarm condition Subnet 1 is on the Zone Manager side of the router Subnet 2 is on the other side of the router EXCEL 10 W7753A UNIT VENTILATOR CONTROLLER Node Number This is the Excel 10 node that has the alarm condition see Network Statics Alarm Type The specific alarm being issued An Excel 10 can provide the alarm types listed in Table 1 Broadcasting the Service Message The Service Message allows a device on the E Bus to be positively identified The Service Message contains the controller ID number and therefore can be used to confirm the physical location of a particular Excel 10 in a building There is one method of broadcasting the Service Message from an Excel 10 W7753A Controller This uses a hardware push button on the side of the controller see Fig 16 Whe
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