ETL MUA Controls Installation, Operation And Maintenance Manual Download Page 14

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Figure 10 - Gas Connection Diagram

Table 5 - Gas Pressure

Gas Pressure Type

Gas Pressure

Size 1-3 Inlet

7 -14 Inches WC

Size 4-5 Inlet

7 Inches WC - 5 psi

Maximum Manifold Pressure - Natural Gas

5 Inches WC Maximum

Maximum Manifold Pressure - Propane

2.5 Inches WC Maximum

NOTICE

Refer to the heater’s rating plate for determining gas supply pressures and requirements.

1. Gas Supply Line Connection
2. Manual Gas Shut-off Valve
3. Ground Joint Union with Brass Seat

4. Plugged 1/8” NPT Test Gauge Connection
5. Sediment Trap
A. Minimum Depth = 3”

Summary of Contents for MUA Controls

Page 1: ...t all accessory items are accounted for and free of damage WARNING Improper installation adjustment alteration service or maintenance can cause property damage injury or death Read the installation operating and maintenance instructions thoroughly before installing or servicing this equipment ALWAYS disconnect power and gas before working on heater Save these instructions This document is the prop...

Page 2: ...ctric Cabinet Heater 32 Motorized Intake Damper 32 Mixing Box Control Unit Options 32 Menu Descriptions 33 Menu Tree 41 Variable Frequency Drive VFD 49 VFD Installation 50 Input AC Power 50 VFD Output Power 50 VFD Programming 51 ACTECH SMV VFD 52 START UP OPERATION 53 Start up Procedure 53 Pulley Adjustment 54 Pulley Alignment Proper Belt Tension 55 Pulley Combination Chart 56 Air Flow Sensor 57 M...

Page 3: ...fective in material or workmanship within the 2 year warranty period upon examination by the MANUFACTURER such part will be repaired or replaced by MANUFACTURER at no charge The BUYER shall pay all labor costs incurred in connection with such repair or replacement Equipment shall not be returned without MANUFACTURER S prior authorization and all returned equipment shall be shipped by the BUYER fre...

Page 4: ...from any exhaust vents The fan inlet shall be located in accordance with the applicable building code provisions for ventilation air 5 All air to the heater must be ducted from the outdoors Recirculation of room air is not permitted If in doubt regarding the application consult the manufacturer 6 Recirculation of room air may be hazardous in the presence of Flammable solids liquids and gases Explo...

Page 5: ... by a single heater does not exceed 10 000 ft2 929 m2 and height does not exceed 20 ft 6 m a duct sensor may be installed in the return air opening of the heater Sensors shall be calibrated per the sensor manufacturer s recommended procedure and frequency or annually whichever is more frequent Each heater shall require CO2 sensor s Sensors shall not be placed near sources of CO2 Table 1 Minimum Ve...

Page 6: ...es of the intake hood to the unit with the supplied sheet metal screws 3 Use caulk on the outside of the screws to prevent water leaks 4 If the unit is a modular unit with a V bank or evaporative cooler section the V bank or evaporative cooler will bolt to the heater with the bolts provided 5 Slide the filters down the filter track Figure 2 Intake and Curb Assembly 1 Unit 2 Intake Housing 3 Intake...

Page 7: ... Verify all fasteners are secure Figure 3 through Figure 8 show different mechanical installations Adequate building relief shall be provided so as not to over pressurize the building when the heating system is operating at its rated capacity This can be accomplished by taking into account through standard engineering methods the structure s designed infiltration rate by providing properly sized r...

Page 8: ...15 Side 20 x 20 72 Up Down 20D 20Z 22Z Side 26 x 26 108 Up Down 20 x 20 72 18 Side 24 x 24 86 Up Down 24D 25Z Side 30 x 30 108 Up Down 24 x 24 86 20 Side 26 x 26 108 Up Down 30D 28Z Side 32 x 32 168 Up Down 26 x 26 108 25 Side 32 x 32 168 Up Down 36D Side 36 x 36 189 Up Down 32 x 32 168 WARNING Failure to properly size ductwork may cause system effects and reduce the performance of the equipment ...

Page 9: ...ect Fired Module 7 Service Disconnect Switch 8 Blower Motor Access Door 9 Curb 20 High 10 Control Drop 11 Motor Drop 12 Gas Connection Max Roof Opening 2 Smaller than Curb Outside Dimension AIRFLOW 1 2 3 4 5 6 8 7 9 10 11 12 1 Discharge Opening 2 Curb Outer Wall 3 Flex Conduit Located in Curb Area for Field Wiring 4 Intake Housing 5 Lifting Lugs 6 Direct Fired Module 7 Service Disconnect Switch 8 ...

Page 10: ...ecific unit dimensions Figure 6 Indoor Installation Details 1 Control Valve Access Door 2 Gas Connection 3 Optional Unistrut Base 4 Lifting Lugs AIRFLOW 1 3 4 2 1 Flex Conduit for Field Wiring 2 Optional Unistrut Base 3 Lifting Lugs 4 Control Filter Access Door 5 Control Valve Access Door 6 Gas Connection 7 Blower Motor Access Door 8 Service Disconnect Switch AIRFLOW 1 2 3 4 5 8 7 6 ...

Page 11: ... 3 Curb 4 Return Damper 5 Intake Damper 6 Intake Filter 7 Direct Fired Module 8 Control Drop 9 Motor Drop 10 Blower Motor Access Door 11 Flex Conduit for Field Wiring 12 Service Disconnect Switch 13 Optional Filters 14 Lifting Lugs AIRFLOW AIRFLOW 1 2 3 4 6 14 5 7 10 4 12 13 8 9 11 AIRFLOW AIRFLOW 1 2 3 4 5 6 8 7 9 3 1 Flex Conduit for Field Wiring 2 Optional Filters 3 Return Damper 4 Intake Dampe...

Page 12: ...ule 3 Support and level the end of the heat module end opposite the blower with the provided equipment legs rails 4 Attach the intake housing to the intake side of the heater module 5 Drill a hole in the discharge of the blower large enough to insert the discharge control sensor if provided Install the sensor through the hole 6 Wire the sensor and coil as indicated on the supplied wiring schematic...

Page 13: ...ng Install shut off valve adjacent to the unit for emergency shut off and easy servicing of controls Refer to Figure 10 on page 14 5 Provide a sediment trap as shown in Figure 10 on page 14 before each unit and where low spots in the pipeline cannot be avoided 6 Clean out the gas line to remove debris before making connections Purge gas line to remove air before attempting to start unit Purging ai...

Page 14: ...essure Natural Gas 5 Inches WC Maximum Maximum Manifold Pressure Propane 2 5 Inches WC Maximum NOTICE Refer to the heater s rating plate for determining gas supply pressures and requirements 1 1 2 3 4 5 A 1 Gas Supply Line Connection 2 Manual Gas Shut off Valve 3 Ground Joint Union with Brass Seat 4 Plugged 1 8 NPT Test Gauge Connection 5 Sediment Trap A Minimum Depth 3 ...

Page 15: ... circuit protection according to the National Electric Code This dedicated branch should run to the junction box 4 Verify that the power source is compatible with the requirements of your equipment The nameplate identifies the proper phase and voltage of the equipment 5 Units shipped with a remote HMI will require a second drop through the base of the unit It is important to route the motor wires ...

Page 16: ...1 2 3 4 1 2 3 4 1 2 3 4 WH WHITE RD RED WIRE COLOR BK BLACK GR GREEN Single Point Connection 1 Disconnect Switch 2 Galflex Conduit In Unit 3 Factory Wiring 4 Field Supplied Wiring From building power or pre wired control panel 5 120V Single Phase Standing Power 6 208 240 Single Phase 7 Three Phase WH BK GR 120V 1 PH 208 240V 1 PH 208 240 460 600V 3 PH 1 2 3 4 1 2 1 2 WH WHITE RD RED WIRE COLOR BK ...

Page 17: ...AUX IN3 COOL HEAT AUX IN2 AUX IN1 SM 2 J34 J37 2 3 4 2 3 4 CR2032 S1 BAS STAT 1 10 J35 SM 1 THERMISTORS CDT CDT OCT OCT ICT ICT LLT LLT SL SL 1 10 J15 PS1 THERMISTORS ST ST DT DT OT OT RT RT IT IT L2 H1 SW2 SW1 HI TEMP LIM FSC RESET INTERTEK ETL CLASSIFIED J39 1 8 J28 COM COM 0 10 VIN 24V AC AI 4 COM IN 24V AC 24V AC DI 2 COM COM 0 10 VIN 24V DC AI 3 COM COM 0 10 VIN 24V DC AI 2 1 8 J14 COM COM 0 ...

Page 18: ...Common to Main Pilot Gas Valve Pin 10 through Pin 18 N A Connector J8 contains inputs and outputs for the Flame Safety Controller FSC NOTE Connector J8 only for Compact Models Pin 1 N A Pin 2 24VAC Pilot Valve Pin 3 through Pin 8 N A Pin 9 24VAC Common to Main Pilot Gas Valve Pin 10 through Pin 18 N A Connector J9 contains 120V AC connections Pin 1 120VAC Main Input Pin 2 120VAC Input from Dischar...

Page 19: ...ry Input Pin 3 24VAC Auxiliary Input Pin 4 24VAC Call for Heat Input Pin 5 24VAC Call for Cooling Input Pin 6 24VAC Call for Blower Input Pin 7 24VAC Occupied Override Input Pin 8 24VAC Isolated Common Connector J12 contains low voltage screw terminal connections Pin 1 24VAC Output to Smoke Detector Pin 2 24VAC Output to Smoke Detector Pin 3 24VAC Digital Input from Smoke Detector Pin 4 24VAC Comm...

Page 20: ... Analog Input from Humidity Sensor Pin 3 24VAC Common to Humidity Sensor Pin 4 24VAC Common to Humidity Sensor Pin 5 24VAC Output to Humidity Sensor Pin 6 0 10VDC Analog Input VFD Humidity Sensor Pin 7 24VAC Common VFD Humidity Sensor Pin 8 24VAC Common to Humidity Sensor Connector J15 contains low voltage connections Pin 1 Intake Temperature Thermistor Input Pin 2 Intake Temperature Thermistor In...

Page 21: ...log Output for Mixing Box Actuator Pin 3 0 10VDC Analog Output for Bypass Damper Pin 4 24VAC Output for DX Float Switch Pin 5 24VAC Output for Door Interlock Pin 6 24VAC Warm Liquid Bypass Output Pin 7 24VAC for Damper Actuator Pin 8 24VDC Common Pin 9 Common for Mixing Box Actuator Pin 10 Common for Bypass Damper Pin 11 24VAC Input from DX Float Switch Pin 12 24VAC Input from Door Interlock Pin 1...

Page 22: ...minal connections for DDC Communications Isolated Pin 1 RS 485 Pin 2 RS 485 Pin 3 RS 485 Common Connector J26 Programming Port Connector J27 USB Programming Port Connector J28 contains low voltage screw terminal connections Pin 1 24VAC Start Command for 3rd Party VFD Pin 2 24VAC Output Pin 3 24VAC Trouble Input Pin 4 24VAC Common for 3rd Party VFD Pin 5 24VAC Constant Output Pin 6 0 10VDC Analog I...

Page 23: ...t from Profile Main Air Flow Pressure Sensor Pin 3 24VDC 0 10VDC Common from Profile Main Air Flow Pressure Sensor Pin 4 N A Pin 5 N A Pin 6 N A Pin 7 24VDC Output to Manifold Gas Pressure 1 Sensor Pin 8 0 10VDC Analog Input from Manifold Gas Pressure 1 Sensor Pin 9 24VDC 0 10VDC Common from Manifold Gas Pressure 1 Sensor Pin 10 24VDC output to Manifold Gas Pressure 2 Sensor Pin 11 0 10VDC Analog ...

Page 24: ...Pin 11 N A Pin 12 24VAC Input from Proof of Closure Pin 13 N A Pin 14 24VAC From CO Alarm Pin 15 24VDC Common From Flame Sensor Pin 16 24VDC Powered PWM to Modulating Gas Valve Full Wave 16 kHz Pin 17 0 10VDC Common for VFD Pin 18 N A Connector J33 contains inputs and outputs for components Pin 1 through 8 N A Pin 9 0 10VDC Analog Input for CFM Pin 10 through 17 N A Pin 18 0 10VDC Common for CFM C...

Page 25: ...tor J37 N A Connector J38 Modbus Pin 1 A Modbus Pin 2 B Modbus Pin 3 C Modbus Ground Dip Switch S1 Switch 1 2 3 always OFF Switch 4 Always ON If Switch 4 is OFF BAS terminals disabled 1 9 10 18 3 4 2 1 1 3 MODBUS C B A ON 1 2 3 4 ...

Page 26: ...26 Dip Switch S2 Programming Service Only Dip Switch S3 End of line termination Dip Switch S4 Programming Service Only ON 1 2 ON ON ...

Page 27: ...utomatic operation Multiple HMIs can be connected to one unit for temperature and R H averaging All combination temperature humidity HMIs will use a vented standoff Mount the static pressure tube close to the HMI to obtain proper room conditions A max of 4 additional HMIs can be daisy chained together Place an End of Line EOL device in the last HMI connected Figure 13 HMI with Standoff Figure 14 R...

Page 28: ...olts to approximately 5 volts the modulating gas valve should be on bypass flow with the heater operating on low or minimum fire From approximately 5 volts to 15 volts DC the valve should be performing its modulating function and the heater should be firing at a modulated flow rate between low and high fire depending upon the voltage Above approximately 15 volts DC the valve should be delivering f...

Page 29: ...ws full access to every configurable parameter in the HMI The parameters are factory configured to the specific application Parameters may need to be modified to fine tune automatic operation after the original setup Remote HMI Control Panel On units shipped with a space HMI a Cat 5 cable will need to be run from J4 J5 or J6 refer to schematics on the main MUA Board to J2 on the HMI If additional ...

Page 30: ...set to EVEN Advanced Options Under advanced options the user may adjust the following settings Contrast The user may adjust the setting from 0 to 10 Setting the contrast to 0 is the lowest setting available and 10 is the highest contrast setting available The factory default contrast setting is 5 Audio Enable User may set the audio to off Dimming Enable Default is set to Off If set to On the HMI D...

Page 31: ... system will run between these days time and desired temperature settings When in the UNOCCUPIED setting the system will run at the unoccupied temperature setting Fan Speed and Damper Position Presets Table 7 outlines the aux pins on Connector J11 for preset settings associated with fan speed and damper position found in Factory Settings Unit Options Schedule A Default Schedule B Default Schedule ...

Page 32: ...e unit is shut off the return air damper will close by spring return If the circuit is closed the MUA board will allow the return air damper to open per the setpoint Outdoor Air The dampers can be controlled from the HMI in the unit or from a space HMI if one is provided to any position from 20 to 100 fresh air There is an outdoor air percentage setting which is available under user settings This ...

Page 33: ...ng schedule from one day of the week to individual days in the week to Week Days or All Fan Speed Enabled when the supply fan is controlled by a VFD or ECM The range of this menu is limited by the min and max setpoints under factory settings When the fan is set to VFD the settings will be displayed in Hertz When the fan is set to ECM the PWM percentage will be displayed When occupied scheduling is...

Page 34: ...at signal volts or milliamps to expect from the analog control system Only valid for analog tempering mode 2nd Disch Sensor On Off selection When an additional thermistor is added the two thermistor readings will be averaged together Default Off Average High Temp On Off When the 2nd Disch Sensor is On this menu will be available When Average High Temp is Off if either discharge sensor goes above h...

Page 35: ...tting before the drain shuts off Evap Hyst Temperature differential before the evap cooling shuts off Occupancy Config Allows access to setting scheduling and or override On or Off Scheduling This menu is where the scheduling can be turned On or Off Default is Off Override This menu is where the occupancy override can be turned On or Off Unit Options Allows user access to various options included ...

Page 36: ... ECM supply output between min and max speed ECM Preset HMI selectable PWM fan preset speeds Fan speed is determined by Aux pins ECM Pressure For use with ECMs that use a pressure transducer 0 10V output Blower Mode If Occ is set to On the menu screen for the blower mode will allow you to choose ON AUTO OFF for Occupied or Unoccupied If Occ is set to Off the menu screen for the blower mode will al...

Page 37: ...e Through the HMI home screen through a hardwired input or automatic activation When dry mode is activated The unit will go to Dry Mode Discharge when there is a call for heat Space dewpoint is the average of the Space RH input with any additional HMI inputs If OA dewpoint Space dewpoint the mixbox should go to mix box outdoor air This should override any other mixbox functionality The exhaust con...

Page 38: ...Option Set Points Cab Heat Set Points Blower Throttle The throttle function is to maintain profile pressure across the burner Throttle Volt Step Increases decreases fan speed when a third party VFD is used Proof of Closure For gas valves that contain a proof of closure switch the user may set this option On Before heating occurs a 24V AC input must be present at connector J32 pin 12 No FSC Reset W...

Page 39: ... of the Dynamic Set Point Differential would multiply the effect of the Dynamic Offset setting When heating If the measured outside air temperature is below the Dynamic Heat OA setpoint minus the differential setpoint the space or discharge setpoint will increase decrease by the offset setting When cooling If the measured outside air temperature is above the Dynamic Cool OA setpoint minus the diff...

Page 40: ...l activate the cabinet heater on Test Drain Heater Beginning this test will activate the drain heater on Test Mixing Box Beginning this test will create an output to the outdoor air control The test will begin at 0 volts The up and down buttons allow for modulation of the output Test Freezestat Test menu will allow user access to adjust setpoints to verify freezestat operation in various types of ...

Page 41: ... C DEFAULT 35 F 2 C RANGE 35 110 F 2 43 C DEFAULT 45 F 7 C RANGE 35 110 F 2 43 C DEFAULT 70 F 21 C RANGE 40 160 F 4 71 C DEFAULT 50 F 4 C RANGE 40 160 F 4 66 C DEFAULT 150 F 65 C RANGE 40 150 F 4 66 C DEFAULT 90 F 31 C RANGE 0 20 F 0 13 C DEFAULT 10 F 6 C RANGE 0 20 F 0 13 C DEFAULT 2 F 2 C INTAKE DISCHARGE FREEZESTAT CAB HEAT STAGE 1 RANGE 55 120 F 13 50 C DEFAULT 85 F 29 C RANGE 55 100 F 13 38 C...

Page 42: ...MIC SP DIFF RANGE 0 50 F 0 25 C DEFAULT 10 F 5 C DYNAMIC SP OFFSET RANGE 20 20 F 11 11 C DEFAULT 1 F 1 C DYNAMIC HEAT OA RANGE 0 110 F 18 43 C DEFAULT 30 F 1 C DYNAMIC COOL OA RANGE 35 110 F 2 43 C DEFAULT 80 F 27 C SCHEDULING SCHEDULING TIMES COPY SCHEDULE START A B C UNOCC TIME END A B C UNOCC TIME MONDAY SUNDAY COPY FROM DAY COPY TO DAY WEEKDAYS ALL DRY MODE CONFIG DISCHARGE TEMP RANGE 40 150 F...

Page 43: ... OCC UNOCC COOL OCC UNOCC DISCHARGE SPACE ANALOG DDC INTAKE SPACE ANALOG DDC MIN RANGE 0 10 F 0 6 C DEFAULT 3 F 2 C JOB SPECIFIC INPUT SOURCE 0 10VDC 2 10VDC 0 20mA 4 20mA PRE PURGE CONFIG ON OFF DEFAULT OFF ENABLE SECONDS RANGE 0 120 S DEFAULT 30 S CABINET HYST HYST RANGE 1 10 F 0 6 C DEFAULT 1 F 1 C FREEZESTAT TIMER MINUTES RANGE 1 10 M DEFAULT 10 M CONSTRUCTION HEATER ENABLE ON OFF DEFAULT OFF ...

Page 44: ...ABLE ON OFF DEFAULT OFF HYST RANGE 0 10 F 0 6 C DEFAULT 1 F 1 C DRAIN HYST RANGE 1 5 F 1 3 C DEFAULT 2 F 1 C FACTORY SETTINGS CONDENSER STAGING NONE DEFAULT 1 COND 1 STAGES 2 COND 2 STAGES 2 COND 3 STAGES 3 COND 2 STAGES 3 COND 3 STAGES CONDENSER MIN TIMES MIN ON MIN OFF RANGE 1 15 M DEFAULT 2 M RANGE 1 15 M DEFAULT 1 M UNIT OPTIONS BOARD CONFIG UNIT ADDRESS RANGE 75 89 DEFAULT 85 STARTUP TIMER RA...

Page 45: ...F DEFAULT OFF DOOR INTERLOCK ON OFF DEFAULT OFF SENSOR RANGE STATIC PS KP RANGE 0 10 V S 0 50 V S DEFAULT 0 15 V S OCC FAN PRESETS RANGE 0 80 HZ DEFAULT VARIES PRESET 0 7 PRESET 0 0 Hz PRESET 1 40 Hz PRESET 2 50 Hz PRESET 3 60 Hz PRESET 4 0 Hz PRESET 5 0 Hz PRESET 6 0 Hz PRESET 7 0 Hz UNOCC FAN PRESETS RANGE 0 80 HZ DEFAULT VARIES PRESET 0 7 FAN PRESETS DEFAULT OCC PWM PRESETS RANGE 0 100 DEFAULT ...

Page 46: ...OOR AIR MIN OUTDOOR AIR STANDARD DEFAULT MAX OUTDOOR AIR MIXING BOX CONFIG PRESET OA VALUES ENABLE ON OFF DEFAULT OFF MIXING BOX LIMITS MIN OA OCC UNOCC RANGE MIN MAX DEFAULT 20 MAX OA OCC UNOCC RANGE MIN MAX DEFAULT 100 EDIT OA TABLE Adjustable percent values from 0 10V Based on is movement of mixing box damper No value may be the same DAMPER PRESETS PRESET VOLTS ENABLE ON OFF DEFAULT OFF OCC PRE...

Page 47: ...OCC OVRD DURATION DURATION RANGE 1 16 H DEFAULT 1 H LIMIT SP ADJUST LIMIT RANGE 0 100 F 0 55 C DEFAULT 5 F 3 C TEMP OVRD DURATION DURATION RANGE 1 16 H DEFAULT 1 H PID PARAMETERS DO NOT ADJUST THESE SETTINGS BLOWER THROTTLE ENABLE ON OFF DEFAULT OFF SENSOR OFFSETS DSCHRG DISP SPACE DISP RANGE 20 20 F 10 10 C DEFAULT 0 F 0 C RANGE 20 20 F 10 10 C DEFAULT 0 F 0 C TROUBLE INPUT UNIT OFF BOTH OFF COOL...

Page 48: ...G STATE OFF ALL STAGE 1 STAGE 2 EVAP TEST OPTIONS TEST CABINET HEATER STATE OFF CAB HEAT TEST DRAIN HEATER STATE OFF DRAIN HEAT TEST MIXING BOX STATE OFF MIX BOX CLEAR FAULT HISTORY CONFIRM FACTORY RESET CONFIRM UPDATE FACTORY DFLTS CONFIRM CFM CFM READINGS INLET PS READINGS AIRFLOW LIMITS HIGH LOW AIRFLOW READINGS HIGH TEMP LIMIT DISPLAYS HIGH TEMP LIMIT READINGS SET CLOCK CURRENT DATE AND TIME C...

Page 49: ...e VFD manual The drive is mounted securely Space around the drive meets the drive s specification for cooling The motor and driven equipment are ready to start The drive is properly grounded The input power voltage matches the drive s nominal input voltage The input power connections at L1 L2 and L3 are connected and tight Verify correct size crimp fitting is used The input power protection is ins...

Page 50: ...t run different fan output power cables in the same conduit VFD mounted in ECP A load reactor should be used and sized accordingly when the distance between the VFD and motor is greater than specified below The load reactor should be installed within 10 feet of the VFD output 208 230V Load reactor should be used when distance exceeds 250 feet 460 480V Load reactor should be used when distance exce...

Page 51: ...Up and Down buttons to scroll to the desired parameter number 4 Once the desired parameter is found press the Mode M button to display the present parameter setting The parameter value will begin blinking indicating that the present parameter setting is being displayed The value of the parameter can be changed by using the Up and Down buttons 5 Pressing the Mode M button will store the new setting...

Page 52: ...153N02TXB571 240V X 59 54 90 1 ESV751N04TXB571 480V X 2 5 2 1 15 1 5 ESV112N04TXB571 480V X 3 6 3 15 2 ESV152N04TXB571 480V X 4 1 3 5 15 3 ESV222N04TXB571 480V X 5 4 4 8 15 5 ESV402N04TXB571 480V X 9 3 8 2 15 7 5 ESV552N04TXB571 480V X 12 4 11 20 10 ESV752N04TXB571 480V X 15 8 14 25 15 ESV113N04TXB571 480V X 24 21 40 20 ESV153N04TXB571 480V X 31 27 50 25 ESV183N04TXB571 480V X 38 34 70 30 ESV223N0...

Page 53: ...otation will result in poor air performance motor overloading and possible burnout For units equipped with a single phase motor check the motor wiring diagram to change rotation For 3 phase motors any two power leads can be interchanged to reverse motor direction 7 When the fan is started observe the operation and check for any unusual noises 8 Place the external disconnect switch back to the ON p...

Page 54: ...ways be checked to avoid serious damage to the motor when the speed is varied Always torque set screws according to the torque specifications shown in Figure 22 Figure 22 Adjustable Pulley Table 10 Maximum RPM and HP Chart Decrease Amperage and Blower RPM Setscrew Thread Size Torque in lbs No 10 bushing 32 1 4 bushing 72 5 16 130 Belt Drive Blower Size Max RPM Max HP 10 1800 2 12 1500 3 15 1400 5 ...

Page 55: ...cause a sharp reduction in belt life and produce squeaky noises Over tightening will cause excessive belt and bearing wear as well as noise Too little tension will cause slippage at start up and uneven wear Whenever belts are removed or installed never force belts over pulleys without loosening motor first to relieve belt tension When replacing belts use the same type as supplied by the manufactur...

Page 56: ... 1165 1187 1210 1232 1255 1277 1299 1322 3 to 5 HP MOTOR PULLEY Dd1 Dd2 Pd1 Pd2 BX BELTS 2VP42 2 9 3 9 3 4 Open Closed BLOWER PULLEY DATUM DIAMETER PITCH DIAMETER 6 5 1 2 5 4 1 2 4 3 1 2 3 2 1 2 2 1 1 2 1 1 2 0 2B5V278 27 8 28 1 184 189 194 200 205 210 215 220 225 230 235 240 246 2B5V250 25 25 3 205 210 216 222 227 233 239 244 250 256 261 267 273 2B5V234 23 4 23 7 218 224 230 237 243 249 255 261 2...

Page 57: ...burner is stopped by the Flame Safety Control NOTE With the blower running verify the airflow pressure reading is a positive value Reverse the airflow tubes if the reading is negative To view burner profile pressure on the HMI go to Service Variable Values Inputs Onbd Prof PS Figure 25 illustrates the approximate CFM going through the unit vs the differential pressure measured by the airflow switc...

Page 58: ...it Refer to Resetting Unit on page 78 Pilot Adjustment Figure 26 Pilot Assembly 1 Restart the fan and check the gas supply pressure at the inlet gas gauge upstream of all electronic valves The inlet pressure should be 7 14 inches wc 7 inches wc 5 psi on Size 4 5 heaters If the inlet pressure is too high install an additional pressure regulator external to the unit 2 Open the field installed manual...

Page 59: ...the modulating valve location 1 Figure 27 on page 60 6 Use the regulator pressure adjusting screw to adjust the high fire manifold pressure to design temperature rise 5 inches wc maximum for natural gas and 2 5 inches wc maximum for propane gas High fire should be set to generate the design temperature rise If the high fire screw is at the end of its adjustment and more pressure is needed then adj...

Page 60: ...ooting guide for more information 3 Measure and record the voltage and amperage to the motor and compare with the motor nameplate to determine if the motor is operating under safe load condition 4 Once the rpm of the wheel has been properly set disconnect power and recheck belt tension and pulley alignment refer to Figure 23 on page 55 1 2 Modulating Valve Adjustment Screw Location 1 Firing Mode L...

Page 61: ...acks TP1 and TP2 on the top edge of the FSC Flame is present when DC voltage reads between 6 and 18V DC Ideal flame intensity produces a signal of 12V DC or higher Flame signal may also be read on the HMI by entering Service Variable Values Inputs Flame Sensor The board monitors the flame signal voltage at connector J32 pin 6 and 15 The FSC receives an airflow signal from the MUA Board which tells...

Page 62: ...he FSC continues to monitor the flame and airflow Once this occurs the unit is in the main flame cycle and thus powers the main gas valve and the modulating gas system This is the normal operating mode The FSC continues to monitor the flame and airflow The last LED on the FSC is the ALARM LED The alarm will turn on when the FSC determines an unsafe condition has occurred and will not allow the uni...

Page 63: ...reens 7 Make up Air MUA Board Monitors and outputs electrical signals for components and functions on the unit Also the MUA board contains an airflow sensor 8 Transformer 20VA 120V to 24V 9 Clogged Filter Switch Optional component Senses whether the filters at the intake to the main supply motor are free of dirt and contaminant 10 Gas Inlet Main gas supply connection 11 Inlet Gas Pressure Gauge In...

Page 64: ... can be implemented with this package through a Protocessor which is a BTL listed embedded Gateway configured to give a Building Management System access to monitor and or control a list of BACnet objects The Protocessor is mounted and factory pre wired inside the Electrical Control Panel ECP Field connections to the Building Management System BMS are shown on wiring schematics The Protocessor is ...

Page 65: ...ted to hit the Service Pin in the ProtoNode This pin is located in the front face and it can be pressed by inserting a small screwdriver and tilting it towards the LonWorks Port Refer to Figure 34 for location of the Service Pin If an XIF file is required it can be obtained by following these steps 1 Set your computer s static IP address to 192 168 1 xxx with a subnet mask of 255 255 255 0 2 Run a...

Page 66: ... address of the Protocessor is 192 168 1 24 Once the landing page has loaded if required log in using admin for the username and password If the default admin password does not work the gateway should have a printed password on the module s Ethernet port Go to the main configuration page select Configure from the left hand menu Select Profile Configuration the following window shown in Figure 35 s...

Page 67: ...The computer used must have a static IP address of 192 168 1 xxx The window shown in Figure 36 appears Click on the Diagnostics and Debugging button on the lower right corner Click on Setup from the left hand side menu and select Network Settings The window shown in Figure 36 will appear You can now modify the IP address to whatever is required in the application Once the IP address has been modif...

Page 68: ... AV nviMBMaxOAPerOcc nvoMBMaxOAPOcc Read Write Max occupied outdoor air percent when mixing box mode outdoor air percent MixingBoxMaxOAPercentUnocc 2 26 AV nviMBMaxOAPerUn nvoMBMaxOAPUnoc Read Write Max unoccupied outdoor air percent when mixing box mode outdoor air percent MixingBoxMinVoltsOcc 2 27 AV nviMBMinVoltsOcc nvoMBMinOAVOcc Read Write Min occupied mixing box voltage when mixing box mode ...

Page 69: ...art end time in minutes ScheduleTuesdayCStart 4 77 AV nviTuesdayCStart nvoTuesdayCStart Read Write Daily schedule start end time in minutes ScheduleTuesdayCEnd 4 78 AV nviTuesdayCEnd nvoTuesdayCEnd Read Write Daily schedule start end time in minutes ScheduleWednesdayAStart 4 79 AV nviWedAStart nvoWedAStart Read Write Daily schedule start end time in minutes ScheduleWednesdayAEnd 4 80 AV nviWedAEnd...

Page 70: ...mp Read Only Remote HMI 4 temperature IntakeRh 5 127 AI nvoIntakeRh Read Only Intake relative humidity SpaceRh 5 128 AI nvoSpaceRh Read Only Space relative humidity AdjustableDamperPosition 2 129 AI nvoDampPosition Read Only Mixing Box Damper signal Hmi0Rh 5 130 AI nvoHmi0Rh Read Only Unit HMI relative humidity Hmi1Rh 5 131 AI nvoHmi1Rh Read Only Remote HMI 1 relative humidity Hmi2Rh 5 132 AI nvoH...

Page 71: ... Tempering Mode Unocc 0 Intake 1 Space 2 BAS 3 DDC Blower Mode Occ 0 Auto 1 OFF 2 ON Blower Mode Unocc 0 Auto 1 OFF 2 ON 3 Temperature Setpoints The preferred method for DDC control is through setpoint manipulation Use the setpoints shown above along with the DDC Occupied Override point in the Runtime settings section to control the blower and to determine when to heat or cool Temperatures can be ...

Page 72: ...HmiMbComm1 159 Vfd571Internal14 18 CoAlarm 94 HmiMbComm2 160 Vfd571CommModuleFail 19 EvapWaterPs 95 HmiMbComm3 161 Vfd571Network 20 EvapFloat 96 HmiMbComm4 162 Vfd571Network1 21 DxFloat 121 Co2ShutdownRequired 163 Vfd571Network2 22 FurnaceFloat 122 Co2Override 164 Vfd571Network3 23 BlowerVfdMbComm 127 Vfd571IgbtTemp 165 Vfd571Network4 24 DoorInterlock 128 Vfd571Output 166 Vfd571Network5 26 MuaToAu...

Page 73: ...ine if HP is sufficient for job Duct static pressure lower than design Reduce fan RPM Insufficient Airflow Incorrect fan rotation Verify that the fan is rotating in the direction shown on rotation label Poor outlet conditions Check duct and connections There should be a straight duct connection to the outlet Intake damper not fully open Inspect damper linkage If the linkage is damaged replace damp...

Page 74: ...ion valve Loose valve wiring Check wiring to valve Shut off valve closed Open shut off valve Defective flame safety controller Replace flame safety controller Pilot fails as main gas valve opens and main gas flows Plug the first burner port next to the pilot gas tube with burner cement Not Enough Heat Main gas pressure too low Increase main gas pressure do not exceed 14 inches wc inlet pressure 5 ...

Page 75: ...Flame Safety Control FSC verifies that airflow is sensed by the airflow sensor Verify spark gap refer to Figure 30 on page 62 Faulty flame rod Faulty FSC replace FSC Intake Firestat Intake temperature exceeds the firestat setpoint Inspect intake area of the unit for unexpected heat source Reset fault with HMI Discharge Firestat Discharge temperature exceed the firestat setpoint Check for faulty re...

Page 76: ... wiring connections Faulty CO detector replace CO detector Evap Water PS Drain Closed Water pressure should be present The board should not receive 120VAC A fault will occur if 120VAC is present for 5 seconds Verify freeze protection kit is installed Check freeze protection kit is operational Drain Open Water pressure should not be present The board should receive 120VAC A fault will occur if 120V...

Page 77: ...pair broken or loose wiring connections Install missing sensor Replace faulty sensor Broken Sensor Intake Discharge Space Outside Air Return Sensor or wiring shorted to ground Check wiring Repair grounded wiring Faulty sensor replace sensor RTC 1 Temp Sensor Real Time Clock RTC temperature sensor located on IBT board Verify there is no damage to the IBT board or the wiring to the IBT board HMI Tem...

Page 78: ... 37 Reset Buttons MUA Board Fault Number Description 0 No Fault 1 IGBT Temperature Fault 2 Output Fault 3 Ground Fault 4 Temperature Fault 5 Flying Start Fault 6 High DC BUS 7 Low DC BUS 8 Overload Fault 9 OEM Fault 10 Illegal Setup Fault 11 Dynamic Brake Fault 12 Phase Lost 13 External Fault 14 Control Fault 15 Start Fault 16 Incompatible Parameter Set 17 EPM Hardware Fault 18 27 Internal Fault 2...

Page 79: ...rease either by hand or via extended grease lines Do not attempt to grease bearings from inside the enclosure while the motor is energized Caution Bearings are sealed over greasing can cause damage to the bearings Do not grease until grease comes out of seals Only add the appropriate amount of grease 2 Weeks After Start up 1 Belt tension should be checked after the first 2 weeks of fan operation S...

Page 80: ...is Refer to Table 11 for drill size s to clear ports Wipe the burner with a clean rag 6 After cleaning the system turn the system Visually inspect the flame Unit Filters Table 11 Burner Orifice Drill Size Orifice Drill Size Gas Port 1 8 Air Port 42 Table 12 Filter Quantity Chart Intake 16 x 20 20 x 25 Size 1 Standard Sloped 2 Size 2 Standard Sloped 2 Size 1 Modular Sloped 3 Size 2 Modular Sloped 3...

Page 81: ...ition 3 CLOSE the inlet gas valve located on the heater Prolonged Shutdown of Unit For prolonged shutdown the following steps should be done 1 Turn the external disconnect switch to the OFF position 2 CLOSE the inlet gas valve located on the heater To re start the unit the following steps should be done 1 Turn the external disconnect switch to the ON position 2 OPEN the inlet gas valve located on ...

Page 82: ...82 Notes ...

Page 83: ...83 CLEANING MAINTENANCE RECORD Date Service Performed ...

Page 84: ...and Unit Information Field Measure Information Model Number Motor Voltage Serial Number Motor Amperage Hardware Rev RPM Software Rev Burner Differential Pressure Inches WC Motor Volts Pilot Flame Signal VDC Motor Hertz Low Fire Flame Signal VDC Motor Phase High Fire Flame Signal VDC Motor FLA High Fire Inlet Gas Pressure Inches WC Motor HP Low Fire Manifold Gas Pressure Inches WC Blower Pulley Hig...

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ETL MUA Controls, Installation, Operation And Maintenance Manual

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