Johnson Controls MagnaDRY WK-15 Installation Manual
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Johnson Controls MagnaDRY WK-15 Installation Manual

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INSTALLATION
MANUAL
CONTENTS
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . .4
INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
REFERENCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
RENEWAL PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
APPROVALS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
PRODUCT NOMENCLATURE . . . . . . . . . . . . . . . . . . . .6
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51
START-UP (COOLING) . . . . . . . . . . . . . . . . . . . . . . . . .62
START-UP (GAS HEAT) . . . . . . . . . . . . . . . . . . . . . . . .63
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . .65
See the following pages for a complete Table of Contents.
NOTES, CAUTIONS AND WARNINGS
The installer should pay particular attention to the words:
NOTE, CAUTION, and WARNING. Notes are intended to
clarify or make the installation easier. Cautions are given
to prevent equipment damage. Warnings are given to
alert installer that personal injury and/or equipment dam-
age may result if installation procedure is not handled
properly.
CAUTION: READ ALL SAFETY GUIDES BEFORE
YOU BEGIN TO INSTALL YOUR UNIT.
SAVE THIS MANUAL
MagnaDRY™
GAS/ELECTRIC SINGLE PACKAGE
AIR CONDITIONERS
MODELS: WK-15, -20 & -25
335227-BIM-B-1008

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Summary of Contents for Johnson Controls MagnaDRY WK-15

  • Page 1 INSTALLATION MagnaDRY™ MANUAL GAS/ELECTRIC SINGLE PACKAGE AIR CONDITIONERS CONTENTS MODELS: WK-15, -20 & -25 GENERAL ........4 SAFETY CONSIDERATIONS .

  • Page 2: Table Of Contents

    HEAT DELAY SETUP......75 ECONOMIZER WITH SINGLE ENTHALPY SENSOR - ..51 OPTIONAL VAV CONTROL BOARD FLASH CODES ..76 ECONOMIZER WITH DUAL ENTHALPY SENSORS - ..52 Johnson Controls Unitary Products...
  • Page 3 38 VAV CONTROL BOARD FLASH CODES ..76 19 WK-15 BLOWER PERFORMANCE - 15 TON HIGH STATIC DRIVE (GAS HEAT) DOWNFLOW ..38 Johnson Controls Unitary Products...

  • Page 4: General

    Wear safety glasses and work gloves, and follow all safety codes. Use a quenching cloth and have a fire • Technical Guide - 347130 extinguisher available for all brazing operations. • General Installation - 335227 Johnson Controls Unitary Products...

  • Page 5: Renewal Parts

    This product must be installed in strict compli- ance with the enclosed installation instructions and any applicable local, state, and national codes including, but not limited to, building, electrical, and mechanical codes. Johnson Controls Unitary Products...

  • Page 6: Product Nomenclature

    M = Options 1, 2, 3, & 4 Z = Options 3, 4 & 5 Options 1 = Disconnect 4 = Smoke Detector R.A. 2 = Non-Pwr'd Conv. Outlet 5 = Pwr'd Conv. Outlet 3 = Smoke Detector S.A. Johnson Controls Unitary Products...

  • Page 7: Installation

    Evaporator Coil, Min. / Max. • National Fuel Gas Code Z223.1. Dry Bulb Temperature (ºF) of Air on 0/125 Condenser Coil, Min. / Max. • Gas-Fired Central Furnace Standard ANSI Z21.47a. Utilization range “A” in accordance with ARI Standard 110. Johnson Controls Unitary Products...

  • Page 8: Location

    Refer to Figures 12, 13 and sion across the unit, MUST BE USED. Refer to 14 for the dimensions and clearances required for com- Figure 1. bustible construction, servicing, and proper unit opera- tion. Johnson Controls Unitary Products...

  • Page 9: Ductwork

    The cover should be attached in a manner drawn into the unit during operation. The cov- adequate to prevent leakage. ering over the mounting holes only need be removed. Do not remove the opening cover. Johnson Controls Unitary Products...

  • Page 10: Condensate Drain

    Refer to Figures 12 and 13 for location of these access panels. Make sure that all screws and panel latches are replaced and properly positioned on the FIGURE 4 - RECOMMENDED DRAIN PIPING unit to maintain an airtight seal. Johnson Controls Unitary Products...

  • Page 11: Typical Field Wiring

    TYPICAL THERMOSTAT ( RCB ) REHEAT CONTROL BOARD TERMINAL BLOCK DEHUMIDISTAT Dehumidistat closes on rise in humidity. TERMINAL BLOCK TB1 FACTORY OR FIELD GROUND SUPPLIED DISCONNECT THREE PHASE POWER SUPPLY FIGURE 5 - TYPICAL FIELD WIRING Johnson Controls Unitary Products...

  • Page 12: Thermostat

    Some KW sizes require fuses and others do not. Refer required. to Table 3 for minimum CFM limitations and to Tables 9 thru 14 for electrical data. Johnson Controls Unitary Products...

  • Page 13: Optional Gas Heat

    All units require a one-inch pipe connection at Maximum capacity of pipe in cubic feet of gas per hour. (Based upon the entrance fitting. a pressure drop of 0.3 inch water column and 0.6 specific gravity gas). Johnson Controls Unitary Products...

  • Page 14: Gas Connection

    Shellac base compounds such as Gaskolac or Stalastic, and compounds such as Rectorseal #5, Clyde's or John Crane may be used. Johnson Controls Unitary Products...

  • Page 15: L.p. Units, Tanks And Piping

    1. The vaporization rate depends on (a) the tempera- hood to the panel. The top flange of this hood slips in ture of the liquid and (b) the "wetted surface" area of the container or containers. Johnson Controls Unitary Products...

  • Page 16: Optional Economizer/Motorized Damper Rain Hood

    • For a dual enthalpy operation, carefully turn the sors are factory mounted as part of the "Factory setpoint adjusting screw fully clockwise past the installed" economizer option. "D" setting. Johnson Controls Unitary Products...

  • Page 17: Power Exhaust Damper Setpoint

    This modulating speed reference signal is generated damper position at which the power exhaust is needed. using an internal algorithm which continuously calcu- The adjustment screw can be set between 25 to 85 lates an output value. degrees open. Johnson Controls Unitary Products...

  • Page 18: Factory-Installed Vfd

    2nd-stage gas heat operation or receives an drive comes wired from the factory to include both 3- error signal from the variable frequency drive. phase power and control connections (run permit sig- nal, speed reference signal & fault signal). Johnson Controls Unitary Products...

  • Page 19: Manual Bypass

    VAV boxes present in the duct sys- • LR '4' to UCB 'C' tem, then boxes must be driven to the full-open position using a customer-supplied power source to prevent over-pressurizing and possi- ble damage to the ductwork. Johnson Controls Unitary Products...

  • Page 20: Vfd-Ready' For Customer-Installation

    0 and 80 psig with a factory-setting nected after the drive is installed. of 60 psig. HGBP is standard on all units with VAV and optional with CV units. Johnson Controls Unitary Products...

  • Page 21: Enthalpy Setpoint Adjustment

    Damper Min. Position Screw Indoor Air Quality Max. Adjustment Screw Indoor Air Quality Indoor Air Quality Min. Adjustment Screw Free Cool Free Cooling LED Economizer Enthalpy Set Point Adjustment Screw FIGURE 10 - HONEYWELL ECONOMIZER CONTROL W7212 Johnson Controls Unitary Products...

  • Page 22: Four And Six Point Loads

    3200 WK-25 Gas 3300 WK-15 Elec 2700 WK-20 Elec 3000 WK-25 Elec 3100 NOTE: Weights include unit, economizer, economizer rain hood and high heat option (gas or electric). FIGURE 11 - FOUR AND SIX POINT LOADS Johnson Controls Unitary Products...

  • Page 23: Physical Data

    WOOD SKID TABLE 8: SUPPLY FAN VFD WEIGHTS, IN LBS. SUPPLY FAN MOTOR 230V 460V 575V W/O MANUAL BYPASS 5.0 hp 7.5 hp 10.0 hp 15.0 hp W/MANUAL BYPASS 5.0 hp 7.5 hp 10.0 hp 15.0 hp Johnson Controls Unitary Products...

  • Page 24: Wk Electrical Data - Standard Drive Motor W/O Powered Convenience Outlet

    NOTE 1: HACR Type per NEC. VOLTAGE LIMITATIONS ELECTRIC HEAT CORRECTION FACTORS VOLTAGE NOMINAL VOLTAGE VOLTAGE kW CAP. MULTIPLIER POWER SUPPLY MIN. MAX. 1.00 VOLTAGE 208/230-3-60 0.92 460-3-60 0.92 LIMITATIONS 575-3-60 0.92 Utilization Range “A” in accordance with ARI Standard 110. Johnson Controls Unitary Products...

  • Page 25: Wk Electrical Data - High Static Drive Motor W/O Powered Convenience Outlet

    NOTE 1: HACR Type per NEC. VOLTAGE LIMITATIONS ELECTRIC HEAT CORRECTION FACTORS VOLTAGE NOMINAL VOLTAGE VOLTAGE kW CAP. MULTIPLIER POWER SUPPLY MIN. MAX. 1.00 VOLTAGE 208/230-3-60 0.92 460-3-60 0.92 LIMITATIONS 575-3-60 0.92 Utilization Range “A” in accordance with ARI Standard 110. Johnson Controls Unitary Products...

  • Page 26: Wk Electrical Data - Low Static Drive Motor W/O Powered Convenience Outlet

    NOTE 1: HACR Type per NEC. VOLTAGE LIMITATIONS ELECTRIC HEAT CORRECTION FACTORS VOLTAGE NOMINAL VOLTAGE VOLTAGE kW CAP. MULTIPLIER POWER SUPPLY MIN. MAX. 1.00 VOLTAGE 208/230-3-60 0.92 460-3-60 0.92 LIMITATIONS 575-3-60 0.92 Utilization Range “A” in accordance with ARI Standard 110. Johnson Controls Unitary Products...

  • Page 27: Wk Electrical Data - Standard Drive Motor With Powered Convenience Outlet

    NOTE 1: HACR Type per NEC. VOLTAGE LIMITATIONS ELECTRIC HEAT CORRECTION FACTORS VOLTAGE NOMINAL VOLTAGE VOLTAGE kW CAP. MULTIPLIER POWER SUPPLY MIN. MAX. 1.00 VOLTAGE 208/230-3-60 0.92 460-3-60 0.92 LIMITATIONS 575-3-60 0.92 Utilization Range “A” in accordance with ARI Standard 110. Johnson Controls Unitary Products...

  • Page 28: Wk Electrical Data - High Static Drive Motor With Powered Convenience Outlet

    NOTE 1: HACR Type per NEC. VOLTAGE LIMITATIONS ELECTRIC HEAT CORRECTION FACTORS VOLTAGE NOMINAL VOLTAGE VOLTAGE kW CAP. MULTIPLIER POWER SUPPLY MIN. MAX. 1.00 VOLTAGE 208/230-3-60 0.92 460-3-60 0.92 LIMITATIONS 575-3-60 0.92 Utilization Range “A” in accordance with ARI Standard 110. Johnson Controls Unitary Products...

  • Page 29: Wk Electrical Data - Low Static Drive Motor With Powered Convenience Outlet

    NOTE 1: HACR Type per NEC. VOLTAGE LIMITATIONS ELECTRIC HEAT CORRECTION FACTORS VOLTAGE NOMINAL VOLTAGE VOLTAGE kW CAP. MULTIPLIER POWER SUPPLY MIN. MAX. 1.00 VOLTAGE 208/230-3-60 0.92 460-3-60 0.92 LIMITATIONS 575-3-60 0.92 Utilization Range “A” in accordance with ARI Standard 110. Johnson Controls Unitary Products...
  • Page 30 Opening in the bottom of the unit can be located by the slice in the insulation. NOTE: All entry holes should be field sealed to prevent rain water entry into the building. FIGURE 12 - FRONT VIEW DIMENSIONS Johnson Controls Unitary Products...
  • Page 31 Connect ductwork to the flanges on those panels. openings are closed with sheet metal covers except when the unit includes a power exhaust option. The covering consists of a heavy black paper composition. Replace the side supply and return air compartment panels. Johnson Controls Unitary Products...

  • Page 32: Unit Clearance And Rain Hood Dimensions

    Compartment) 36-5/8” 1“ CONDENSATE DRAIN 16-1/8” (Must be trapped) 5” 28-3/16” 92” REAR VIEW LH VIEW DETAIL “Y” UNIT WITH RAIN HOODS FIGURE 14 - UNIT CLEARANCE AND RAIN HOOD DIMENSIONS (15, 20 & 25 TON) Johnson Controls Unitary Products...

  • Page 33: Cfm, Static Pressure, And Power - Altitude And Temperature Corrections

    This value must be corrected for elevation. Example 2: A system, located at 5,000 feet of elevation, is to BHP at 5,000 ft = 3.2 x .832 = 2.66 deliver 6,000 CFM at a static pressure of 1.5". Use the unit Johnson Controls Unitary Products...
  • Page 34 335227-BIM-B-1008 ltitude/Temperature Conversion Factor SEA LEVEL TEMPER TURE (°F) FIGURE 15 - ALTITUDE/TEMPERATURE CONVERSION FACTOR Johnson Controls Unitary Products...
  • Page 35 6 turns 15-Ton Standard Drive, Cooling Only, Bottom Connection 1VP62 x BK105 7000 6500 1 Turn 2 Turns 6000 3 Turns 4 Turns 5500 5 Turns 6 Turns 5000 4500 4000 3500 3000 2500 External Static ("WC) Johnson Controls Unitary Products...
  • Page 36 6 turns 15-Ton Standard Drive, Gas Heat, Bottom Connection 1VP62 x BK105 7000 6500 1 Turn 6000 2 Turns 3 Turns 5500 4 Turns 5 Turns 5000 6 Turns 4500 4000 3500 3000 2500 External Static ("WC) Johnson Controls Unitary Products...
  • Page 37 15-Ton High Static Drive, Cooling Only, Bottom Connection 1VP62 x BK90 8000 1 Turn 7500 2 Turns 3 Turns 7000 4 Turns 5 Turns 6500 6 Turns 6000 5500 5000 4500 4000 3500 3000 External Static ("WC) Johnson Controls Unitary Products...
  • Page 38 15-Ton High Static Drive, Gas Heat, Bottom Connection 1VP62 x BK90 8000 1 Turn 7500 2 Turns 3 Turns 7000 4 Turns 6500 5 Turns 6 Turns 6000 5500 5000 4500 4000 3500 3000 External Static ("WC) Johnson Controls Unitary Products...
  • Page 39 10 HP motor 7.5 HP motor 20-Ton Standard Drive, Cooling Only, Bottom Connection VP68 x BK100 11000 10000 1 Turn 2 Turns 3 Turns 9000 4 Turns 5 Turns 6 Turns 8000 7000 6000 5000 External Static ("WC) Johnson Controls Unitary Products...
  • Page 40 10 HP motor 7.5 HP motor 20-Ton Standard Drive, Gas Heat, Bottom Connection VP68 x BK100 11000 10000 1 Turn 2 Turns 3 Turns 9000 4 Turns 5 Turns 8000 6 Turns 7000 6000 5000 External Static ("WC) Johnson Controls Unitary Products...
  • Page 41 7.5 HP motor 20-Ton High Static Drive, Cooling Only, Bottom Connection VP71 x BK100 12000 1 Turn 11000 2 Turns 3 Turns 10000 4 Turns 5 Turns 6 Turns 9000 8000 7000 6000 External Static ("WC) Johnson Controls Unitary Products...
  • Page 42 7.5 HP motor 20-Ton High Static Drive, Gas Heat, Bottom Connection VP71 x BK100 12000 1 Turn 11000 2 Turns 3 Turns 10000 4 Turns 5 Turns 9000 6 Turns 8000 7000 6000 External Static ("WC) Johnson Controls Unitary Products...
  • Page 43 7.5 HP motor 25-Ton Standard Drive, Cooling Only, Bottom Duct Connection 1VP65 & B5V94 12000 11000 1 Turn 2 Turns 10000 3 Turns 4 Turns 9000 5 Turns 6 Turns 8000 7000 6000 5000 4000 External Static ("WC) Johnson Controls Unitary Products...
  • Page 44 7.5 HP motor 25-Ton Standard Drive, Gas Heat, Bottom Duct Connection 1VP65 & B5V94 12000 11000 1 Turn 2 Turns 10000 3 Turns 4 Turns 9000 5 Turns 6 Turns 8000 7000 6000 5000 4000 External Static ("WC) Johnson Controls Unitary Products...
  • Page 45 7.5 HP motor 25-Ton High Static Drive, Cooling Only, Bottom Duct Connection 1VP71 & 1B5V94 13000 12000 1 Turn 2 Turns 3 Turns 11000 4 Turns 5 Turns 6 Turns 10000 9000 8000 7000 6000 External Static ("WC) Johnson Controls Unitary Products...
  • Page 46 7.5 HP motor 25-Ton High Static Drive, Gas Heat, Bottom Duct Connection 1VP71 & 1B5V94 13000 12000 1 Turn 2 Turns 3 Turns 11000 4 Turns 5 Turns 10000 6 Turns 9000 8000 7000 6000 External Static ("WC) Johnson Controls Unitary Products...

  • Page 47: Static Resistances

    All motors have a nominal speed of 1800 RPM, a 1.15 service factor and a solid base. They can operate to the limit of their service factor because they are located in the moving air, upstream of any heating device. Do NOT close this pully below 1 turn open. Johnson Controls Unitary Products...

  • Page 48: Charging Chart - 20 Ton

    2. This chart is applicable to unit with the TXV's left to the factory setting. If the TXV's have been adjusted in the field, The charging chart may no longer apply. FIGURE 17 - CHARGING CHART - 20 TON Johnson Controls Unitary Products...

  • Page 49: Phasing

    Re-check set screws after duct systems. With this information, the RPM for the 10-12 hrs. run time is recommended. supply air blower and the motor pulley adjustment (turns open) can be determined from the Blower Per- formance Data Tables. Johnson Controls Unitary Products...

  • Page 50: Air Balance

    12 and 13. TO ASSURE A DRY INDOOR COIL. 2. Insert at least 8" of 1/4 inch tubing into each of these holes for sufficient penetration into the air flow on both sides of the indoor coil. Johnson Controls Unitary Products...

  • Page 51: Operation

    (if the fan switch on the room thermostat is set in static pressure reaches or exceeds the high-limit set- the "AUTO" position) and drives the economizer damp- point, then the supply fan motor will be shutdown. Johnson Controls Unitary Products...

  • Page 52: Economizer With Dual Enthalpy Sensors

    Control setpoint is used in the determination. not provide power exhaust operation. Once the call for cooling has been satisfied, it will de- energize any compressors and condenser fans, after the minimum compressor run times have been satis- Johnson Controls Unitary Products...

  • Page 53: Economizer With Optional Vav Blower With Power Exhaust

    ASCD, and, if the other compressor is idle, stop the condenser fans. If the call for cooling is still present at the conclusion of the ASCD, the UCB will re-ener- gize the halted compressor. Johnson Controls Unitary Products...

  • Page 54: Low Ambient Cooling

    On any fault, only the associated When the room thermostat calls for first stage cooling, system will be affected by any safety/preventive action. with or without a call for dehumidification, the RCB senses a signal through "Y1", de-energizing the HGR, Johnson Controls Unitary Products...

  • Page 55: Alternate" Mode

    The unit will not operate in the reheat mode if there is any call for heating. "ALTERNATE” MODE All safety devices function as previously described. When the RCB detects a need for dehumidification (24VAC) at "HUM" via the field supplied dehumidistat Johnson Controls Unitary Products...

  • Page 56: Reheat Control Board

    335227-BIM-B-1008 HGRR DEHUMIDISTAT MODE HARNESS SELECTION CONNECTION JUMPER FIGURE 21 - REHEAT CONTROL BOARD Johnson Controls Unitary Products...
  • Page 57 HUMIDIFY TERMINAL REHEAT RELAY RHTB REHEAT TERMINAL BLOCK FIGURE 22 - REHEAT CONTROLS - PART 1 REHEAT SOLENOID REHEAT REHEAT SOLENOID SOLENOID UNIT CONTROL BOARD REHEAT CONTROL BOARD FIGURE 23 - REHEAT CONTROLS - PART 2 Johnson Controls Unitary Products...

  • Page 58: Electric Heating Sequence Of Operations

    (6M) (6M & 7M on 72 KW, 240V) position using a customer-supplied power will be energized. After completing the specified fan source to assure adequate airflow across the on delay for heating, the UCB will energize the heating elements. blower motor. Johnson Controls Unitary Products...

  • Page 59: Heating Operation Errors

    Refer to Table 32 for the required heat anticipator set- This control is located inside the heater compart- ting. ment and is set to open at the temperature indi- Johnson Controls Unitary Products...

  • Page 60: Gas Heating Sequence Of Operations

    The UCB will de-energize the "GV1" to allow a flow of gas to only the first stage carry- blower motor. Johnson Controls Unitary Products...

  • Page 61: Gas Heating Operation Errors

    (Table 36). When voltage is no longer sensed at the power is removed from the module either at the GV, the UCB will de-energize the indoor blower follow- unit or by resetting the room thermostat. ing the elapse of the fan off delay for heating. Johnson Controls Unitary Products...

  • Page 62: Flash Codes

    8. Set the room thermostat fan switch to off. FLASH CODES 9. Turn unit electrical power off. The UCB will initiate a flash code associated with errors within the system. Refer to UNIT CONTROL BOARD FLASH CODES Table 36. Johnson Controls Unitary Products...

  • Page 63: Operating Instructions

    13", nor the operating pressure drop below 5.0" for natural gas 1. Turn “off” electric power to unit. units. If gas pressure is outside these limits, con- tact the local gas utility for corrective action. Johnson Controls Unitary Products...

  • Page 64: Manifold Gas Pressure Adjustment

    The pilot flame should envelope the end of the flame 1. Turn off all other gas appliances connected to the sensor. To adjust pilot flame, (1) remove pilot adjust- gas meter. ment cover screw, (2) increase or decrease the clear- Johnson Controls Unitary Products...

  • Page 65: Adjustment Of Temperature Rise

    Gas Heat Application Table 4. improper and dangerous operation, which could cause injury to person and/or damage Btuh Input x 0.8 unit components. Verify proper operation after x F Temp Rise servicing. Johnson Controls Unitary Products...
  • Page 66 3. If M1 is pulled in and voltage is supplied at M1, is present at the UCB supply air blower motor ter- lightly touch the compressor housing. If it is hot, the compressor may be off on inherent protection. Johnson Controls Unitary Products...
  • Page 67 This will reset any compressor nect the Mate-N-Locks and jumper between the lock outs. WHITE and YELLOW wires of the UCB's Mate- NLock plug. If compressor #1 energizes, there is a fault in the economizer wiring or economizer con- trol. Johnson Controls Unitary Products...
  • Page 68 UCB may have the compres- nal overload to reset. Test again when cool. sor in an ASCD. Check the LED for an indication of an ASCD cycle. The ASCD should time out within Johnson Controls Unitary Products...
  • Page 69 If 24 volts is present and M1 is not pulled in, 11. If 24 volts is present at the UCB Y1 terminal and replace the contactor. the compressor is not out due to a protective switch trip, repeat trip lock out, or ASCD, the econ- Johnson Controls Unitary Products...

  • Page 70: Gas Heat Troubleshooting Guide

    UCB energize the supply air blower motor until the high temperature limit has reset. Caution should be used at all times as the supply air blower may energize regardless of the room thermostat fan switch position. Johnson Controls Unitary Products...
  • Page 71 7. If 24 volts is not present at the UCB supply air rect, replace the relay board. blower motor terminal, check for 24 volts from the room thermostat. If 24 volts is not present from the room thermostat, check for the following: Johnson Controls Unitary Products...
  • Page 72 3. Make sure that the pilot burner is not bent or dam- not broken or cracked, if all are intact, replace the aged. ignition control IC1 or IC2. Johnson Controls Unitary Products...

  • Page 73: Unit Control Board Flash Codes

    Removal procedure is described in release the UCB TEST/ RESET button once. BURNER INSTRUCTIONS page 64. Clean or replace burner orifices and burners as needed. Flash codes that do and do not represent alarms are listed in Table 36. Johnson Controls Unitary Products...

  • Page 74: Unit Control Board

    EEPROM Storage Failure No Power or Control Failure Non-alarm condition. Check Alarm History Reset All ASCDs for One Cycle Non Alarm Condition Green LED Flashing Current Alarm Flashed Red LED FIGURE 30 - UNIT CONTROL BOARD Johnson Controls Unitary Products...

  • Page 75: Unit Control Board Option Setup

    OPTION SETUP / STORE button, and holding it for at least 2 seconds. • The green status LED (Option Byte) will be turned on and the red status LED (Heat Delay) is turned Non-std Non-std off. Johnson Controls Unitary Products...

  • Page 76: Optional Vav Control Board Flash Codes

    15 Flashes Dirty Filter Switch No Power or Control Failure Subject to change without notice. Printed in U.S.A. 335227-BIM-B-1008 Copyright © 2008 by Johnson Controls, Inc. All rights reserved. Supersedes: 335227-BIM-A-0807 Johnson Controls Unitary Products 5005 York Drive Norman, OK 73069...

This manual is also suitable for:

Magnadry wk-20Magnadry wk-25

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