ETL MUA Controls Installation, Operation And Maintenance Manual
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ETL MUA Controls Installation, Operation And Maintenance Manual

Standard and modular/recirculating direct fired heaters
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Installation, Operation, and Maintenance Manual
Modular Direct Fired Heater
IF YOU SMELL GAS: OPEN WINDOWS, DO NOT TOUCH ELECTRICAL SWITCHES, EXTINGUISH
ANY OPEN FLAMES, IMMEDIATELY CALL YOUR GAS SUPPLIER.
Upon receiving unit, check for any interior and exterior damage. If damage is found, report it
immediately to the carrier. Check that all accessory items are accounted for and free of damage.
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 property of the owner of this equipment and is required
for future maintenance. Leave this document with the owner when installation or service is complete.
Standard and Modular/Recirculating Direct Fired Heaters
Modular Direct Fired Recirculating Heater
FOR YOUR SAFETY
RECEIVING AND INSPECTION
WARNING!
MUA Controls
Direct Fired Heater
A0033037
October 2020 Rev. 01

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  • Page 1 MUA Controls Standard and Modular/Recirculating Direct Fired Heaters Installation, Operation, and Maintenance Manual Modular Direct Fired Heater Direct Fired Heater Modular Direct Fired Recirculating Heater FOR YOUR SAFETY IF YOU SMELL GAS: OPEN WINDOWS, DO NOT TOUCH ELECTRICAL SWITCHES, EXTINGUISH ANY OPEN FLAMES, IMMEDIATELY CALL YOUR GAS SUPPLIER.

  • Page 2: Table Of Contents

    Table of Contents WARRANTY ............3 Main Burner Adjustment ........59 Listings ..............3 Final Start-up Procedure ........60 Patents ..............3 Sequence of Operation ........61 INSTALLATION ............. 4 Flame Safety Control ........61 Mechanical ............4 Components ............63 Curb and Ductwork ..........7 Network .............64 Roof Mount Installation ........

  • Page 3: Warranty

    1-866-784-6900 for email information. Listings This unit is ETL-listed to the American National Standard/CSA Standard for Gas Unit Heaters And Gas- Fired Duct Furnaces ANSI Z83.4, CSA 3.7. The Safety Control Board is ETL-listed to standard UL 60730-2-9, UL 60730-1, CSA E60730-1, CSA E60730-2-9.

  • Page 4: Installation

    INSTALLATION It is imperative that this unit is installed and operated with the designed airflow and electrical supply in accordance with this manual. If there are any questions about any items, please call the service department at 1-866-784-6900 for warranty and technical support issues. Mechanical WARNING: DO NOT RAISE UNIT BY THE INTAKE HOOD, BLOWER, MOTOR SHAFT, OR BEARINGS.
  • Page 5 9. If gas fork trucks or other fossil fuel powered equipment are utilized in the conditioned area, additional ventilation requirements for the facility must be addressed separately. 10. If the heater utilizes room sensors for limiting room CO concentration: • The CO control set-point shall be no greater than the maximum allowable room concentration of 5000 ppm less the sensor’s published accuracy tolerance.
  • Page 6 Intake Assembly Intakes and curbs (Figure 2) are shipped on a separate skid. Upon unit arrival, perform the following steps to assemble the intake to the unit. 1. Apply silicone or weather-proof gasket on the backside of the flanges of the intake hood or V-bank intake.

  • Page 7: Curb And Ductwork

    Curb and Ductwork This fan was specified for a specific CFM and static pressure. The ductwork attached to this unit will significantly affect airflow performance. When using rectangular ductwork, elbows must be radius throat, radius back with turning vanes. Flexible ductwork and square elbows should not be used. Any transitions and/or turns in the ductwork near the fan outlet will cause system effect.
  • Page 8 Table 3 - Required Supply Ductwork Blower Size (Inches) Discharge Duct Size Straight Duct Length Side 14” x 14” 48” Up/Down Side 20” x 20” 72” 15D, 16Z, 18Z Up/Down 14” x 14” 48” Side 16” x 16” 54” Up/Down Side 20”...

  • Page 9: Roof Mount Installation

    Roof Mount Installation Note: Refer to submittal drawings for specific unit dimensions. Figure 3 - Roof Mount Details 1. Discharge Opening 2. Curb Outer Wall 3. Flex Conduit Located in Curb Area for Field Wiring 4. Intake Housing AIRFLOW 5. Lifting Lugs 6.

  • Page 10: Duct Mount Installation

    Duct Mount Installation Note: Refer to submittal drawings for specific unit dimensions. Figure 5 - Duct Mount Details 1. Control/Valve Access Door 2. Gas Connection 3. Optional Unistrut Base 4. Lifting Lugs AIRFLOW Indoor (Inline) Installation Note: Refer to submittal drawings for specific unit dimensions. Figure 6 - Indoor Installation Details 1.

  • Page 11: Roof Mount Installation - Recirculation Unit

    Roof Mount Installation - Recirculation Unit Note: Refer to submittal drawings for specific unit dimensions. Figure 7 - Roof Mount Details 1. Discharge Opening 2. Curb Outer Wall 3. Curb 4. Return Damper AIRFLOW 5. Intake Damper 6. Intake Filter 7.

  • Page 12: Heat Module Add-On Installation

    Heat Module Add-On Installation Modular heat units (Figure 9) that are ordered to provide heat onto an existing blower only application require field mechanical and wiring installation. 1. Remove existing intake housing and lifting lugs from the blower section intake side. 2.

  • Page 13: Gas

    Installation of gas piping must conform with local building codes, or in the absence of local codes to the National Fuel Gas Code, ANSI Z223.1 (NFPA 54) – latest edition. In Canada, installation must be in accordance with CAN/CGA-B149.1 for natural gas units and CAN/CGA-B149.2 for propane units. WARNING: INLET GAS PRESSURE MUST NOT EXCEED PRESSURE INDICATED ON NAMEPLATE.
  • Page 14 Figure 10 - Gas Connection Diagram 1. Gas Supply Line Connection 4. Plugged 1/8” NPT Test Gauge Connection 2. Manual Gas Shut-off Valve 5. Sediment Trap 3. Ground Joint Union with Brass Seat A. Minimum Depth = 3” Table 5 - Gas Pressure Gas Pressure Type Gas Pressure Size 1-3 Inlet...

  • Page 15: Hmi And Remote Room Sensor Installation

    ELECTRICAL WARNING! Disconnect power before installing or servicing unit. High voltage electrical input is needed for this equipment. A qualified electrician should perform this work. Before connecting power to the heater, read and understand the entire section of this document. As-built wiring diagrams are furnished with each unit by the factory.

  • Page 16: Make-Up Air (Mua) Board Connectors

    Fan to Building Wiring Connection Figure 11 - Wiring Connection Details Single Point Connection 120V 1 PH. 208-240V 1 PH. 208-240/460/600V 3 PH. WIRE COLOR BK - BLACK RD - RED BK BK WH - WHITE GR - GREEN 1. Disconnect Switch 3.
  • Page 17 Make-up Air (MUA) Board Connectors The Make-up Air (MUA) Board (Figure 12) is located in the main control cabinet. Figure 12 - Make-up Air Board Power Vent Neutral Power Power Vent Vent 0-10 0-10 0-10 0-10 Pilot Spark Main Alarm Blower Burn CASLink BMS Slave...
  • Page 18 Note: Some connections may not be used dependent on system configurations RJ45 connectors. Connector J1 and J2 are associated with BMS. Connector J3 through J6 are interchangeable and may be used to connect to an HMI or VFD. J1 - CASLink/Slave J4 - HMI/VFD/Master J2 - CASLink/Slave J5 - HMI/VFD/Master...
  • Page 19 Connector J10 contains 120V AC connections Pin 1 - 120VAC Input from Evap Cooler Pressure Pin 5 - 120VAC Input from Supply Overload Switch Pin 6 - 120VAC Output to Supply Starter Coil Pin 2 - 120VAC Input from Evap Cooler Float Pin 7 - 120VAC Output to Exhaust Starter Coil Pin 8 - 120VAC Input from Exhaust Overload Switch...
  • Page 20 Connector J13 contains low voltage connections Pin 1 - N/A Pin 8 - N/A Pin 2 - PWM + Output for Supply ECM Pin 9 - PWM Output for Supply ECM Pin 3 - 24VAC Output for Low Gas Pressure Switch Pin 10 - 24VAC Input from Low Gas Pressure Switch Pin 4 - 24VAC Output for High Gas Pressure Switch...
  • Page 21 Connector J16 contains low voltage screw terminal connections BAS/STAT Pin 1 - 0-10VDC Analog Input for Heat Modulation Pin 5 - 24VAC Unit Interlock Input Pin 2 - 4-20 mA Analog Input for Heat Modulation Pin 6 - 24VAC Output (Stat) Pin 3 - 24VAC Common Pin 7 - 24VAC Output (R) Pin 4 - 24VAC Common...
  • Page 22 Connector J22 (Y1) Condenser 1 Connector J23 (Y2) Condenser 2 Connector J24 (Y3) Condenser 3 J22 Pin 1 - 24VAC Output to Condenser 1 J23 Pin 2 - 24VAC Common to Condenser 2 J22 Pin 2 - 24VAC Common to Condenser 1 J24 Pin 1 - 24VAC Output to Condenser 3 J23 Pin 1 - 24VAC Output to Condenser 2 J24 Pin 2 - 24VAC Common to Condenser 3...
  • Page 23 Connector J29 contains 120V AC connections Pin 1 - 120VAC Blower Service Switch Input Pin 5 - 120VAC Output to FSC (7) Pin 2 - 120VAC Burner Service Switch Input Pin 6 - N/A Pin 3 - 120VAC High Temp Limit Input Pin 7 - N/A Pin 4 - 120VAC Output to FSC (6) Pin 8 - 120VAC Neutral...
  • Page 24 Connector J32 contains inputs and outputs for components Pin 1 - N/A Pin 10 - N/A Pin 2 - N/A Pin 11 - N/A Pin 3 - 24VAC Output for Proof Of Closure Pin 12 - 24VAC Input from Proof of Closure Pin 4 - N/A Pin 13 - N/A Pin 5 - 24VAC Output To CO Alarm...
  • Page 25 Connector J36 N/A Connector J37 N/A MODBUS Connector J38 Modbus Pin 1 (A) - Modbus (-) Pin 3 (C) - Modbus Ground Pin 2 (B) - Modbus (+) Dip Switch S1 Switch 1, 2, 3 always OFF. Switch 4 Always ON. If Switch 4 is OFF, BAS terminals disabled.
  • Page 26 Dip Switch S2 Programming - Service Only Dip Switch S3 End of line termination Dip Switch S4 Programming - Service Only...

  • Page 27: Fan To Building Wiring Connection

    HMI and Remote Room Sensor Installation Remote HMI faceplates (Figure 13), remote room sensors (Figure 14), and smart controls may be ordered and shipped separately. These components measure temperature and assist in controlling the unit. These components should be installed in a safe location, free of influence from external heat sources. Install sensors in areas indicative of the average room temperature, and away from heat-producing appliances.

  • Page 28: Temperature Control

    Temperature Control Discharge Control: When used in discharge control, the MUA board receives a call to heat from the intake sensor. The MUA board will modulate the discharge temperature until the desired setpoint is reached. The user can choose whether discharge heating/cooling is activated based on intake temperature, space temperature, either, or both.

  • Page 29: Operation

    OPERATION Accessing Menu Configurations Figure 16 - HMI Screen General Overview SPACE The HMI allows the user to change parameters and options. The user may use the HMI to view operating information regarding sensors, 70°F temperatures, pressures, and fault history on the HMI screen (Figure 16).

  • Page 30: Hmi Configuration Menu

    HMI Configuration Menu To enter the configuration menu (Figure 19), press the bottom two buttons simultaneously on the HMI faceplate. In this menu screen, you may adjust Communication and Advanced Options, check Status, and About information. Figure 19 - Configuration Menu MENU Configuration Communication...

  • Page 31: Scheduling

    Scheduling To set a schedule on the HMI (Figure 20), you must first enable scheduling: Factory Settings > Occupied Scheduling > On Set your sensor temperature setpoints for occupied and unoccupied schedules: User Settings > Temp Set Points > (Varies) Once scheduling is enabled, and the temperature setpoints are configured, you may enter your scheduled days and times: User Settings >...

  • Page 32: Unit Options

    Unit Options Building Signal Damper Control When this option is ordered, the outdoor air (supply) and return dampers will modulate based on a 0-10V DC signal from the Building automation system. 0V = max outside air, 10V = max return air. Direct fired units cannot go below 20% outside air, maximum output voltage may differ.

  • Page 33: Menu Descriptions

    Menu Descriptions NOTE: Refer to “Menu Tree” on page 41 through page 48 for default/range settings. User settings: Allows the user to change or set certain temperatures and configurations on the unit. Factory settings: Requires a password (1111) to enter this menu. Factory settings are job-specific and configured from the plant.
  • Page 34 Factory Settings Password to enter factory menu is 1111. NOTE: Refer to “Menu Tree” on page 41 through page 48 for default/range settings. Heating Type - Unit heating type is set from the factory. Temperature Control - The MUA board monitors temperature control setpoints and components. •...
  • Page 35 Factory Settings Password to enter factory menu is 1111. NOTE: Refer to “Menu Tree” on page 41 through page 48 for default/range settings. Cooling Config - Allows the user to set various cooling configurations. • Cooling Type - Selections are None, DX, Evap, Both. If “None” is selected, all cooling options under user settings are hidden.
  • Page 36 Factory Settings Password to enter factory menu is 1111. NOTE: Refer to “Menu Tree” on page 41 through page 48 for default/range settings. Refer to Table 7 on page 31 for Aux pin settings. • Blower Config • Blower Control - Allows user to select between 120V Contactor, VFD Manual, VFD Preset, VFD Jog, VFD 0-10V, ECM, ECM 0-10V, ECM Preset, ECM Pressure, ECP.
  • Page 37 Factory Settings Password to enter factory menu is 1111. NOTE: Refer to “Menu Tree” on page 41 through page 48 for default/range settings. Refer to Table 7 on page 31 for Aux pin settings. • Occ PWM Presets - After the blower has started, the blower setting will use the aux pins to drive the preset unoccupied value.
  • Page 38 Factory Settings Password to enter factory menu is 1111. NOTE: Refer to “Menu Tree” on page 41 through page 48 for default/range settings. Refer to Table 7 on page 31 for Aux pin settings. • Damper Presets - This allows the user to set damper preset option On or Off. •...
  • Page 39 Factory Settings Password to enter factory menu is 1111. NOTE: Refer to “Menu Tree” on page 41 through page 48 for default/range settings. • Outdoor Reset - Allows access to setting option On/Off. Below are scenarios for Outdoor Reset functionality. - Discharge Heat Tempering: If outside air is below OA Reset Low setpoint, heat will discharge to Reset Heat Discharge setting.
  • Page 40 Service Settings Password to enter service menu is 1234. NOTE: Refer to “Menu Tree” on page 41 through page 48 for default/range settings. Temperatures - User can monitor various temperature values. Relative Humidity - Displays current humidity readings per HMI. Open/Closed Status - Menu to view the open/closed status of all inputs.

  • Page 41: Menu Tree

    Menu Tree User Settings NOTE: If scheduling is On, occupied and unoccupied settings will be available for some parameters. RANGE: 35-110°F/2-43°C TEMP SET POINTS INTAKE SET POINTS HEAT (OCC/UNOCC) DEFAULT: 45°F/7°C RANGE: 55-120°F/13-50°C COOL (OCC/UNOCC) DEFAULT: 85°F/29°C RANGE: 55-100°F/13-38 °C EVAP (OCC/UNOCC) DEFAULT: 85°F/29°C RANGE: 40-150°F/4-66°C...
  • Page 42 User Settings NOTE: If scheduling is On, occupied and unoccupied settings will be available for some parameters. RANGE: 40-150°F/4-66°C DISCHARGE TEMP DRY MODE CONFIG DEFAULT: 90°F/13°C RANGE: MIN OA - MAX OA OUTDOOR AIR % DEFAULT: 100% START A/B/C - UNOCC/TIME SCHEDULING TIMES MONDAY-SUNDAY SCHEDULING...
  • Page 43 Factory Settings - Password 1111 NOTE: If scheduling is On, occupied and unoccupied settings will be available for some parameters. HEATING TYPE MOD DF/D76/IND DF DISCHARGE, SPACE, HEAT (OCC/UNOCC) TEMPERATURE CONTROL TEMPERING MODE ANALOG, DDC INTAKE, SPACE, COOL (OCC/UNOCC) ANALOG, DDC ACTIVATE BASED ON INTAKE/SPACE/ ACT (OCC/UNOCC)
  • Page 44 Factory Settings - Password 1111 NOTE: If scheduling is On, occupied and unoccupied settings will be available for some parameters. COOLING CONFIG COOLING TYPE NONE/DX/EVAP/BOTH RANGE: 40-90 ° F/4-32 ° C MIN COOL OA TEMP DEFAULT: 55 ° F/13 ° C NONE (DEFAULT), 1 COND 1 STAGES, 2 COND 2 STAGES, CONDENSER STAGING 2 COND 3 STAGES, 3 COND 2 STAGES, 3 COND 3 STAGES...
  • Page 45 Factory Settings - Password 1111 NOTE: If scheduling is On, occupied and unoccupied settings will be available for some parameters. 120V CONTACTOR (DEFAULT), VFD MANUAL, BLOWER CONFIG UNIT OPTIONS BLOWER CONTROL VFD PRESET, VFD JOG, VFD 0-10V, VFD PRESSURE, ECM, ECM 0-10V, ECM PRESET, ECM PRESSURE, ECP AUTO, OFF, ON OCC/UNOCC BLOWER MODE...
  • Page 46 Factory Settings - Password 1111 NOTE: If scheduling is On, occupied and unoccupied settings will be available for some parameters. ONBOARD/REMOTE AIRFLOW PROVING CONTROL UNIT OPTIONS DEFAULT: ONBOARD ON/OFF PURGE CONFIG PURGE BUTTON ENABLE DEFAULT: OFF RANGE: 1-120 M PURGE TIME DURATION DEFAULT: 60 M RANGE: 0-80 HZ...
  • Page 47 Factory Settings - Password 1111 NOTE: If scheduling is On, occupied and unoccupied settings will be available for some parameters. ON/OFF INTAKE DAMPER ENABLE UNIT OPTIONS DEFAULT: OFF ON/OFF DISCHARGE DAMPER ENABLE DEFAULT: OFF ON/OFF ROOM OVERRIDE ENABLE DEFAULT: OFF NONE, BEFORE AIRFLOW, AFTER AIRFLOW EXHAUST CONTACTOR MODE...
  • Page 48 Service Settings - Password 1234 MONITOR TEMPERATURE TEMPERATURES SENSOR READINGS CURRENT HMI HUMIDITY HMI (1-5) RELATIVE HUMIDITY READINGS COMPONENTS INPUT INPUTS OPEN/CLOSED STATUS READINGS COMPONENTS OUTPUT OUTPUTS READINGS COMPONENTS INPUT INPUTS VARIABLE VALUES VARIABLE READINGS COMPONENTS OUTPUT OUTPUTS VARIABLE READINGS VFD PARAMETER VFD STATUS READINGS...

  • Page 49: Variable Frequency Drive (Vfd)

    Variable Frequency Drive (VFD) WARNING!! - Before installing the VFD drive, ensure the input power supply to the drive is OFF. - The power supply and motor wiring of the VFD must be completed by a qualified electrician. - The VFD is factory programmed, only change if replaced or ordered separately. Consult the VFD manual and all documentation shipped with the unit for proper installation and wiring of the VFD.

  • Page 50: Vfd Installation

    VFD Installation Input AC Power • Circuit breakers feeding the VFDs are recommended to be thermal-magnetic and fast-acting. They should be sized based on the VFD amperage. Refer to Table 9 on page 52. See installation schematic for exact breaker sizing. •...

  • Page 51: Vfd Programming

    VFD Programming Programming 1. The Drive should be programmed for the proper motor voltage. P107 is set to 0 (Low) if motor voltage is 120V AC, 208V AC or 400V AC. P107 is set to 1 (High) if the motor voltage is 230V AC, 480V AC, or 575V AC.

  • Page 52: Actech Smv Vfd

    ACTECH SMV VFD Table 9 - Cross-Reference 1Ø 3Ø Input Amps 1Ø Input Amps 1Ø Output Breaker 1Ø Breaker 1Ø Part Number Volts Input Input 120V AC 240V AC Amps 120V AC 240V AC ESV371N01SXB571 120/240V ESV751N01SXB571 120/240V 16.6 ESV112N01SXB571 120/240V 1Ø...

  • Page 53: Start-Up Operation

    START-UP OPERATION Before starting up or operating the unit, verify all fasteners are secure and tight. Check the set screw in the wheel hub, bearings, and the fan sheaves (pulleys). With power and gas OFF to the unit or before connecting the unit to power, turn the fan wheel by hand.

  • Page 54: Pulley Adjustment

    Pulley Adjustment The adjustable motor pulley is factory set for the RPM specified (Table 10). Speed can be increased by closing or decreased by opening the adjustable motor sheave. Two groove variable pitch pulleys must be adjusted to an equal number of turns open or closed. Any increase in speed represents a substantial increase in horsepower required by the unit.

  • Page 55: Pulley Alignment/Proper Belt Tension

    Pulley Alignment/Proper Belt Tension 1. Belts tend to stretch and settle into pulleys after an initial start-up sequence. Do not tension belts by changing the setting of the motor pulley, this will change the fan speed and may damage the motor. •...

  • Page 56: Pulley Combination Chart

    Pulley Combination Chart Motor RPM 1725 1/3 to 1-1/2 HP MOTOR PULLEY AX BELTS 1VL34 Open TURNS ON MOTOR PULLEY Closed BLOWER PULLEY DATUM DIAMETER PITCH DIAMETER 4 1/2 3 1/2 2 1/2 1 1/2 AK114 11.2 1/3 to 2 HP MOTOR PULLEY AX BELTS 1VL40...

  • Page 57: Air Flow Sensor

    Air Flow Sensor Figure 24 - Board Airflow Sensor The MUA board contains an on-board pressure sensor (Figure 24) for airflow monitoring. There are both high and low airflow tubing connections connected to a sensor, measuring the pressure drop across the burner. This is to verify that there is proper airflow (0.15 to 0.80 inch wc) across the burner and proper combustion at all times.

  • Page 58: Modulating Gas System

    Modulating Gas System The Modulating Gas System is directly controlled from the MUA Board at connector J32 pin 7(+) and 16(-). A modulating 0-24V DC signal is utilized to modulate the gas valve signal. The signal is a 16 kHz full-wave rectified signal.

  • Page 59: Main Burner Adjustment

    Main Burner Adjustment 1. Once the pilot has been properly established, the manifold gas pressure or temperature rise should be adjusted to nameplate or design specifications. The gas pressure regulator is adjusted at the factory for average gas conditions. It is important that the gas supplied to the burner is in accordance with the input rating on the rating plate.

  • Page 60: Final Start-Up Procedure

    Figure 27 - High Fire/Low Fire Bypass Screw Setting Combination Gas Valve Modulating Valve Modulating Valve Adjustment Screw Location #1 Adjustment Screw Location #2 Regulator Adjusting Screw Regulator Vent Dial Pilot Outlet Pilot Adjustment Key (Under Cap) Primary Inlet Outlet Regulator Adjusting Screw (High Fire)

  • Page 61: Sequence Of Operation

    Sequence of Operation To better understand the direct-fired heater, it is easier to break the unit out into smaller individual systems. There are two main systems, a make-up air fan, and a heater. The make-up air fan consists of a blower and motor.
  • Page 62 The OPR CTRL LED indicates that there is power to the FSC. Next, the AIRFLOW LED will come on if there is proper airflow through the unit. Third, the unit will pause to purge any gases or combustible vapors before attempting flame ignition. Then, there is a Pilot Trial For Ignition (PTFI), and the PTFI LED comes on.

  • Page 63: Components

    Components The following image and list outline the typical direct fired heater components and their functions. Figure 31 - Typical Cabinet Components SPACE 70°F OCCUPIED IDLE 1. VFD – Optional component. Adjusts speed of 3-phase motors by changing the frequency signal sent to the motor.

  • Page 64: Network

    Network NOTE: The board will reboot when altering certain factory settings. Communication Module (Optional) The Communication Module, PN: SCADA, is included in all CASlink equipped panels. It obtains operational data from various connected components. This communication wiring is either RS-485 shielded twisted pair wiring or RJ45 Cat 5 Ethernet wiring.

  • Page 65: Lonworks

    LonWorks LonWorks compatibility (Figure 33) can be implemented on control packages through the ProtoNode, a LonMark certified external Gateway configured to give a Building Management System access to monitor and/or control a list of Network Variables. The ProtoNode is mounted and factory pre-wired inside the Electrical Control Panel.

  • Page 66: Device Instance, Mac Address, Baud Rate

    Device Instance, MAC Address, Baud Rate Some applications may require that the Protocessor have a specific Device Instance, the default device instance is 50,000. To change the Device Instance, you must access the Web Configurator by connecting a computer to the Ethernet port of the Protocessor. The computer used must be assigned a static IP address of 192.168.1.xxx and a subnet mask of 255.255.255.0.

  • Page 67: Changing The Ip Address

    Changing the IP Address Some BACnet IP applications may require changing the IP address of the Protocessor. To change the IP address, go to the internal server by typing the default IP address of the Protocessor, 192.168.1.24, in the URL field of any web browser. The computer used must have a static IP address of 192.168.1.xxx. The window shown in Figure 36 appears.

  • Page 68: Ddc Control Points

    DDC Control Points Refer to page 71 for DDC Notes - 1-5. BACNET OBJECT NAME BACNET TYPE LON SNVT NAME FUNCTION DESCRIPTION DDCHeatCommand (1) Binary Value (BV) nviDDCHeat/nvoDDCHeat Read/Write Heating command, requires heat tempering mode = DDC DDCCoolCommand1 (1) nviDDCCool1/nvoDDCCool1 Read/Write Cooling stage 1 command, requires cool tempering mode = DDC DDCCoolCommand2 (1)
  • Page 69 BACNET OBJECT NAME BACNET TYPE LON SNVT NAME FUNCTION DESCRIPTION IntakeCoolOccSP (3) nviInCoolOccSP/nvoInCoolOccSP Read/Write Intake Cooling Occupied Setpoint IntakeCoolUnoccSP (3) nviInCoolUnocSP/nvoInCoolUnocSP Read/Write Intake Cooling Unoccupied Setpoint SpaceCoolOccSP (3) nviSpCoolOccSP/nvoSpCoolOccSP Read/Write Space Cooling Occupied Setpoint SpaceCoolUnoccSP (3) nviSpCoolUnocSP/nvoSpCoolUnocSP Read/Write Space Cooling Unoccupied Setpoint IntakeCoolStagingDiffOcc (3) nviInCoolStDifOc/nvoInCoolStDifOc Read/Write...
  • Page 70 BACNET OBJECT NAME BACNET TYPE LON SNVT NAME FUNCTION DESCRIPTION BlowerManualPwmRateUnocc (2) nviBlowManPwmUn/nvoBlowManPwmUn Read/Write ECM speed when unoccupied, requires blower control = ECM manual Mixing Box Outdoor Air Percent during occupied times, requires mixing box MixingBoxManualOAOcc (2) nviMixBoxManOAOc/nvoMixBoxManOAOc Read/Write mode = outdoor air percent Mixing Box Outdoor Air Percent during unoccupied times, requires mixing box MixingBoxManualOAUnocc (2) nviMixBoxManOAUn/nvoMixBoxManOAUn...
  • Page 71 DDC Notes (1) Full Control Points • Use only if Heating and/or Cooling tempering mode has been set to “DDC” through the unit’s HMI. • Setting the Heating and Cooling modes to “DDC” disables temperature based activation of these functions. The preferred heating and cooling activation method is to use space and/or intake temperatures along with unit setpoints.

  • Page 72: Ddc Fault List

    DDC Fault List Fault Fault Fault Fault Fault Fault Number Description Number Description Number Description None BrokenSensorReturn Vfd571EpmHw FireDetect RtcTempSensor Vfd571Internal1 SmokeDetect AuxRtcTempSensor Vfd571Internal2 SupplyOverload Hmi0TempInvalid Vfd571Internal3 ExhaustOverload Hmi1TempInvalid Vfd571Internal4 MasterRomCrc Hmi2TempInvalid Vfd571Internal5 AuxRomCrc Hmi3TempInvalid Vfd571Internal6 FlameProving Hmi4TempInvalid Vfd571Internal7 IntakeFirestat ProofOfClosure Vfd571Internal8 DischargeFirestat...

  • Page 73: Troubleshooting

    Troubleshooting The following table lists causes and corrective actions for possible problems with the fan units. Review this list prior to consulting manufacturer. The following table lists causes and corrective actions for possible problems with the fan units. Review this list before consulting manufacturer. Airflow Troubleshooting Chart Problem Potential Cause...

  • Page 74: Burner Troubleshooting

    Burner Troubleshooting Problem Potential Cause Corrective Action Main gas is off Open main gas valve. Air in gas line Purge gas line. Dirt in pilot orifice Clean orifice with compressed air. Gas pressure out of range Adjust to proper gas pressure. Pilot valve is off Turn pilot valve on.

  • Page 75: Hmi Fault Codes

    HMI Fault Codes Fault Potential Cause Corrective Action Fire possibly present. The board is receiving an input from the Check wiring. Repair broken or loose Fire Detect fire detector. wiring connections. Faulty fire detector, replace fire detector. Verify the smoke detector functionality. Check wiring.
  • Page 76 Fault Potential Cause Corrective Action Gas is off, turn gas on. Faulty ignition transformer, replace transformer. Fireye detected improper burner Fire Eye Alarm operation. Faulty Fireye, replace Fireye. Improper flame/lighting, refer to “Burner Troubleshooting” on page 74. Adjust regulator or add regulator. The board lost input on the gas pressure Check wiring.
  • Page 77 Fault Potential Cause Corrective Action Verify door is closed. Safety feature that will shut down supply Check wiring. Repair broken or loose Door Interlock fan when door signal lost. wiring connections. Faulty door switch, replace the switch. Intake Damper Check wiring. Repair broken or loose wiring connections.

  • Page 78: Vfd Fault List

    VFD Fault List Refer to VFD manufacturer manual for further details. Fault Number Description No Fault IGBT Temperature Fault Output Fault Ground Fault Temperature Fault Flying Start Fault High DC BUS Low DC BUS Overload Fault OEM Fault Illegal Setup Fault Dynamic Brake Fault Phase Lost External Fault...

  • Page 79: Maintenance

    MAINTENANCE To guarantee trouble-free operation of this heater, the manufacturer suggests following these guidelines. Most problems associated with fan failures are directly related to poor service and maintenance. Please record any maintenance or service performed on this fan in the documentation section located at the end of this manual.

  • Page 80: Burner Maintenance

    Burner Maintenance Burner maintenance should be performed annually when entering heating season. 1. Verify the unit is off. 2. Inspect the pilot assembly, refer to “Pilot Adjustment” on page 58. Replace if required. 3. Inspect the burner plates. 4. Clean the burner plates. Make sure the baffles are secure and attached to the burner. 5.

  • Page 81: Emergency Shutdown Of Unit

    Emergency Shutdown of Unit To shutdown the unit in the event of an emergency, do the following: 1. Turn power OFF to the unit from main building disconnect. 2. Turn the external disconnect switch to the OFF position. 3. CLOSE the inlet gas valve located on the heater. Prolonged Shutdown of Unit For prolonged shutdown, the following steps should be done: 1.
  • Page 82 Notes...
  • Page 83 CLEANING & MAINTENANCE RECORD Date Service Performed...

  • Page 84: Start-Up Documentation

    Start-Up Documentation START-UP AND MEASUREMENTS SHOULD BE PERFORMED AFTER THE SYSTEM HAS BEEN AIR BALANCED AND WITH THE HEAT ON (Warranty will be void without completion of this form) Job Information Job Name Service Company Address Address City City State State Phone Number Phone Number...

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