Johnson P4HUE30N13006 Installation Instructions Manual
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Johnson P4HUE30N13006 Installation Instructions Manual

Multi-position gas-fired furnaces commercial belt drive, upflow / horizontal models
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INSTALLATION
INSTRUCTIONS
CONTENTS
GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
UNIT INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
VENTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
DUCTWORK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
UPFLOW APPLICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
HORIZONTAL APPLICATION . . . . . . . . . . . . . . . . . . . . . . . . . . 9
GAS PIPING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
ELECTRICAL POWER CONNECTION . . . . . . . . . . . . . . . . . . . 11
ELECTRICAL CONTROL CONNECTIONS . . . . . . . . . . . . . . . 12
SAFETY CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
TSTART-UP AND ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . 14
ACCESSORY CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . 16
OPERATION AND MAINTENANCE . . . . . . . . . . . . . . . . . . . . . 18
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
HORIZONTAL (WITHOUT FILTER) . . . . . . . . . . . . . . . . . . . . . 22
INCHES W.C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
CAUTION:
READ ALL SAFETY GUIDES BEFORE YOU
START TO INSTALL YOUR FURNACE.
SAVE THIS MANUAL
MULTI-POSITION
GAS-FIRED FURNACES
COMMERCIAL BELT DRIVE
UPFLOW / HORIZONTAL MODELS: P4HUE30N13006
130 MBH OUTPUT
035-17443-000 Rev. A (800)

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  • Page 1: Table Of Contents

    GAS-FIRED FURNACES INSTRUCTIONS COMMERCIAL BELT DRIVE UPFLOW / HORIZONTAL MODELS: P4HUE30N13006 130 MBH OUTPUT CONTENTS GENERAL INFORMATION ......3 UNIT INSTALLATION.
  • Page 2 035-17443-000 Rev. A (800) CONTENTS GENERAL INFORMATION ......3 DESCRIPTION ........3 INSPECTION .

  • Page 3: General Information

    035-17443-000 Rev. A (800) GENERAL INFORMATION DESCRIPTION Each furnace in this series is a Category I furnace, suitable for common venting with other gas-fired This Category I furnace is designed for installation in a resi- appliances as allowed by the National Fuel Gas dential or commercial application.

  • Page 4: Unit Installation

    035-17443-000 Rev. A (800) The size of the unit should be based on an acceptable heat Rooms communicating directly with the space containing the loss calculation for the structure. ACCA, Manual J or other appliances are considered part of the unconfined space, if approved methods may be used.

  • Page 5: Special Combustion And Ventilation Considerations

    035-17443-000 Rev. A (800) TABLE 1: UNIT CLEARANCES TO COMBUSTIBLES (ALL DIMENSIONS ARE IN INCHES) ALL SURFACES IDENTIFIED WITH THE UNIT IN AN UPRIGHT CONFIGURATION LEFT RIGHT FLOOR / LINE APPLICATION FRONT REAR FLUE CLOSET ALCOVE ATTIC SIDE SIDE BOTTOM CONTACT UPFLOW / HORIZONTAL MODELS - UPFLOW APPLICATION UPFLOW...
  • Page 6 (LBS) CURRENT SIZE @ 75 FT. TEMP. °F AMPS PROTECT @230V P4HUE30N13006 25 - 55 1-1/2 12 x 15 208/230 VAC (ONLY) 115 and 208/230 VAC (SPLIT) 6 & 11 115 VAC (ONLY) AFUE numbers are determined in accordance with DOE test procedures.

  • Page 7: Venting

    035-17443-000 Rev. A (800) VENTING VENT SAFETY CHECK PROCEDURE If this furnace is replacing a common-vented fur- It is the responsibility of the installer to verify nace, it may be necessary to resize the existing proper vent system operation. vent line and chimney to prevent oversizing prob- lems for the new combination of units.

  • Page 8: Ductwork

    035-17443-000 Rev. A (800) DUCTWORK On all installations without a coil, a removable access panel is recommended in the outlet duct such that smoke or reflected light would be observable inside the casing to indi- The duct system design and installation must: cate the presence of leaks in the heat exchanger.

  • Page 9: Horizontal Application

    035-17443-000 Rev. A (800) The appropriate electrical knock-outs for power wiring, con- trol wiring and gas piping should be removed at this time. Return air may enter the furnace through either one side and a bottom or through bottom only, depending on the type of application.

  • Page 10: Gas Piping

    035-17443-000 Rev. A (800) CRAWL SPACE INSTALLATION GAS PIPING The furnace can be hung from floor hoists or installed on suit- able blocks or pad. Blocks or pad installations shall provide adequate height to ensure the unit will not be subject to water damage.

  • Page 11: Electrical Power Connection

    035-17443-000 Rev. A (800) Provide a power supply(s) separate from all other circuits. Install overcurrent protection and disconnect switch per local / national electrical codes. The switch should be reason- ably close to the unit for convenience in servicing. With the disconnect switch(s) in the OFF position, check all wiring against the unit wiring label.

  • Page 12: Electrical Control Connections

    035-17443-000 Rev. A (800) ELECTRICAL CONTROL CONNECTIONS FIGURE 7A Install the field-supplied thermostat. The thermostat instruc- tions for wiring are packed with the thermostat. With the ther- mostat set in the OFF position and the main electrical source disconnected, complete the low-voltage wiring from the ther- mostat to the terminal board on the low-voltage transformer.

  • Page 13: Safety Controls

    035-17443-000 Rev. A (800) To separate control circuits, use one of the followng methods: Install an isolation relay between the thermostat and the condensing unit transformer. The blower motor power supply will not be deener- gized when the blower door is removed. Turn main Use a thermostat equipped with separate “R-H”...

  • Page 14: Tstart-Up And Adjustments

    035-17443-000 Rev. A (800) START-UP AND ADJUSTMENTS The accuracy of the gas meter is affected by both the temperature and barometric pressure. Gas meter readings should be accurate at 60º F and 30.0”h.g. barometric pres- The initial start-up of the furnace requires the following addi- sure.

  • Page 15: Adjustment Of Manifold Gas Pressure

    035-17443-000 Rev. A (800) Be sure to relight any gas appliances that were turned off at the start of this input check. ADJUSTMENT OF MANIFOLD GAS PRESSURE Turn gas off at main gas valve. Remove 1/8" plug/outlet pressure tap in the main gas valve body and install proper manometer tube adapter fitting.

  • Page 16: Accessory Connections

    035-17443-000 Rev. A (800) Once the correct gas pressure to the burners has been Repeat the pulley adjustment procedure until the established, turn the gas valve switch to OFF and turn desired temperature rise is obtained. the electrical supply switch OFF; then, remove the pres- sure tap at the gas valve and re-install the plug using a ADJUSTMENT OF FAN-OFF CONTROL SETTINGS compound (on the threads) resistant to the action of LP...
  • Page 17 035-17443-000 Rev. A (800) naces is desired, it is necessary to use the accessory twining kit that is designed for use with these furnaces. This furnace is equipped with a “Time-On” Delay Relay which is required to protect the belt-drive motor/starter if operated (1) under continuous fan mode, or (2) when installing twin- ning kit 2TC03700124.

  • Page 18: Operation And Maintenance

    035-17443-000 Rev. A (800) OPERATION AND MAINTENANCE After the 60-second wait, the ignition sequence is restarted with an additional 10 seconds of igniter warm-up time. If this ignition attempt is unsuccessful, one more re-try will be SEQUENCE OF OPERATION made before lockout. The following describes the sequence of operation of the fur- A momentary loss of gas supply, flame blowout, or a shorted nace.

  • Page 19: Lubrication

    035-17443-000 Rev. A (800) four weeks. Inspect the filters every three weeks after that, BURNER REMOVAL / CLEANING especially if the system is running constantly. The main burners should be checked periodically for dirt accumulation. If cleaning is required, follow this procedure: When replacing filters, DO NOT use a type with excessively high pressure drop.

  • Page 20: Troubleshooting

    035-17443-000 Rev. A (800) Upper Heat Exchanger Access FURNACE CONTROL DIAGNOSTICS Perform steps 1-4 above. The furnace has a built-in, self diagnostic capability. If a sys- Disconnect vent piping from the vent motor assembly at tem problem occurs, a fault code is shown by a blinking LED. the top panel on the furnace.
  • Page 21 035-17443-000 Rev. A (800) 6 FLASH: This indicates that after the unit was opening, the failure is counted as a recycle. Check the valve and control pressure switch opened 4 times during the call for heat. If the for proper operation. main blower is in a “Delay On”...

  • Page 22: Horizontal (Without Filter)

    035-17443-000 Rev. A (800) FIGURE 13 : FURNACE EVENT CONTROL SCHEDULE TABLE 7: BLOWER PERFORMANCE CFM -UPFLOW/HORIZONTAL (WITHOUT FILTER) Note: Data below reflects airflows with bottom return opening. MOTOR EXTERNAL STATIC PRESSURE, INCHES W.C. VOLTAGE PULLEY 0.30 0.40 0.50 0.60 0.70 0.80 0.90...

  • Page 23: Filter Performance-Pressure Drop Inches W.c

    035-17443-000 Rev. A (800) FILTER PERFORMANCE The filter drop values in Table 8 are typical values for the type of filter listed and should only be used as a gu ideline. Actual The airflow capacity data published in Table 7 represents pressure drop ratings for each filter type vary between filter blower performance WITHOUT filters.

  • Page 24: Wiring Diagram

    FIGURE 14 : WIRING DIAGRAM NOTE: The furnace’s control system depends on correct polarity of the power supply. Subject to change without notice. Printed in U.S.A. 035-17443-000 Rev. A (800) Copyright © by Unitary Products Group 2000. All rights reserved. Supersedes: 650.74-N2Y (899) Unitary 5005 York...

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