Coleman P*HU Installation Instruction
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Coleman P*HU Installation Instruction

Coleman P*HU Installation Instruction

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INSTALLATION
INSTRUCTION
CONTENTS
GENERAL INFORMATION..................................... 3
UNIT INSTALLATION .............................................4
VENTING................................................................. 8
DUCTWORK ...........................................................9
PLICATION ...........................................................10
HORIZONTAL APPLICATION ..............................12
DOWNFLOW MODEL APPLICATION ................. 13
DOWNFLOW FILTERS .........................................13
GAS PIPING .........................................................14
ELECTRICAL POWER CONNECTION ................15
SAFETY CONTROLS ...........................................16
START-UP AND ADJUSTMENTS ........................17
ACCESSORY CONNECTIONS ............................20
FURNACE ACCESSORIES ............................... 20
FILTER PERFORMANCE..................................... 22
OPERATION AND MAINTENANCE .....................23
FURNACE CONTROL DIAGNOSTICS ................ 26
CAUTION:
READ ALL SAFETY GUIDES BEFORE YOU
START TO INSTALL YOUR FURNACE.
SAVE THIS MANUAL
MID-EFFICIENCY
GAS-FIRED FURNACES
TUBULAR HEAT EXCHANGER SERIES
MODELS: P*HU / G8T-UH / FL8-UH / L8T-UH (Upflow/Horizontal)
40 - 130 MBH INPUT
P*DN / G8T-DN / L8T-DN (Downflow)
40 - 130 MBH INPUT
035-17405-000 Rev. B (0801)

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  • Page 1: Table Of Contents

    INSTALLATION MID-EFFICIENCY GAS-FIRED FURNACES INSTRUCTION TUBULAR HEAT EXCHANGER SERIES MODELS: P*HU / G8T-UH / FL8-UH / L8T-UH (Upflow/Horizontal) CONTENTS 40 - 130 MBH INPUT GENERAL INFORMATION........3 P*DN / G8T-DN / L8T-DN (Downflow) 40 - 130 MBH INPUT UNIT INSTALLATION ..........4 VENTING..............

  • Page 2: General Information

    035-17405-000 Rev. B (0801) GENERAL INFORMATION DESCRIPTION WARNING This Category I furnace is designed for installation in a resi- dential or commercial application. A Category I furnace has a IMPROPER INSTALLATION MAY CREATE A fan assisted combustion system equipped with an integral CONDITION WHERE THE OPERATION OF THE mechanical means to draw products of combustion through PRODUCT COULD CAUSE PERSONAL INJURY...
  • Page 3 035-17405-000 Rev. B (0801) CAUTION Use only the type of gas approved for this furnace; refer to the furnace rating plate. This appliance is not to be used for temporary WARNING heating of buildings or structures under construc- tion. Do not install this furnace in a corrosive or contam- Only use natural gas in furnaces designed for nat- inated atmosphere.

  • Page 4: Unit Installation

    FLOOR/ LINE APPLICATION TOP FRONT REAR FLUE CLOSET ALCOVE ATTIC SIDE SIDE BOTTOM CONTACT UPFLOW / HORIZONTAL MODELS P*HU/ G8T-UH / L8T-UH / FL8-UH UPFLOW COMBUSTIBLE UPFLOW B-VENT COMBUSTIBLE HORIZONTAL COMBUSTIBLE † ‡ ‡ HORIZONTAL B-VENT COMBUSTIBLE DOWNFLOW MODELS P*DN / G8T-DN / L8T-DN...
  • Page 5 035-17405-000 Rev. B (0801) The following must be considered to obtain proper air for To estimate free area of a specific louver or grille: combustion and ventilation in confined spaces. Refer to Table2 on page5. TABLE 2: ESTIMATED FREE AREA Air Source from Inside the Building - Wood or Metal Wood 20-25%...
  • Page 6 035-17405-000 Rev. B (0801) MODELS P*HU / G8T-UH / † L8T-UH & FL8-UH 40 / 32 / 1200 / "A" 14-1/2 13-1/4 10-1/8 10-1/8 3-3/4 57 / 46 / 1200 / “A” 14-1/2 13-1/4 10-1/8 10-1/8 3-3/4 80 / 64 / 1200 / "A"...
  • Page 7 035-17405-000 Rev. B (0801) MODELS P*DN / † G8T-DN / L8T-DN 40 / 32 / 1200 / "A" 14-1/2 13-1/4 12-1/4 10-1/8 3-3/4 60 / 48 / 1200 / "A" 14-1/2 13-1/4 12-1/4 10-1/8 3-3/4 80 / 64 / 1200 / "B" 14-1/2 13-1/4 12-1/4...

  • Page 8: Venting

    035-17405-000 Rev. B (0801) Chlorinated waxes and cleaners Chlorine based swimming pool chemicals Water softening chemicals CAUTION De-icing salts or chemicals Carbon tetrachloride A furnace shall not be connected to a chimney flue Halogen type refrigerants serving a separate appliance designed to burn m.

  • Page 9: Ductwork

    035-17405-000 Rev. B (0801) If improper venting is observed during any of the above VENT SAFETY CHECK PROCEDURE tests, the venting system must be corrected. Any corrections or resizing of the common venting sys- CAUTION tem must be in accordance with the National Fuel Gas Code, ANSI Z223.1 or Section 7, Venting Systems and Air Supply for Appliances, CAN/CGA B149.1 or .2 Instal- If this furnace is replacing a common-vented fur-...

  • Page 10: Upflow/Horizontal Models - Upflow Application

    035-17405-000 Rev. B (0801) UPFLOW/HORIZONTAL MODELS - Install the wire retainer (if provided) inside the cabinet. Insert the open ends of the wire retainer into the clip UPFLOW APPLICATION loops at the rear of the blower compartment. The retainer wire should pivot freely like a hinge, on the clips Supply Plenum Connection at the rear of the cabinet.
  • Page 11 035-17405-000 Rev. B (0801) Side Return - External Filter Where the return duct system is not complete, the return con- nection must run full size to a location outside the utility room, An accessory filter rack (1SR0302BK) is available for mount- basement or space where the furnace is installed.

  • Page 12: Horizontal Application

    035-17405-000 Rev. B (0801) Bottom Return NOTE: If an external mounted filter rack is being used, see the instructions provided with that accessory for proper hole Bottom return applications normally pull return air through a cut size. base platform or return air plenum. Be sure the return plat- form structure is suitable to support the weight of the furnace.

  • Page 13: Downflow Model Application

    035-17405-000 Rev. B (0801) When suspending the furnace from rafters or floor joists using rod, pipe or straps, for furnace weights to determine suitable means of suspension. Refer to Table3 on page6. Angle supports should be placed at the supply air end and near the blower deck.

  • Page 14: Gas Piping

    035-17405-000 Rev. B (0801) SUPPLY AIR DUCTS sure testing of that system at test pressures in excess of 1/2 psig (3.48 kPa). Installations on combustible material or floors must use a The furnace must be isolated from the gas supply piping sys- combustible floor base 1CB0314, 17, 21 &...

  • Page 15: Electrical Power Connection

    Refer to the furnace control diagnostics section for symptoms of reversed power supply polarity. FIGURE 11 : ELECTRICAL WIRING - UPFLOW MODELS P*HU/G8T-UH/L8T-UH & FL8-UH CAUTION Use copper conductors only. Connect the power supply as shown on the unit wiring label on the inside of the blower compartment door.

  • Page 16: Electrical Control Connections

    035-17405-000 Rev. B (0801) ELECTRICAL CONTROL CONNECTIONS Electrical supply to the unit is dependent upon the panel that covers the blower compartment being in place and properly positioned. 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 CAUTION disconnected, complete the low-voltage wiring from the ther-...

  • Page 17: Start-Up And Adjustments

    035-17405-000 Rev. B (0801) START-UP AND ADJUSTMENTS The initial start-up of the furnace requires the following addi- tional procedures. When the gas supply is initially connected to the furnace, the gas piping may be full of air. In order to purge this air, it is recommended that the ground joint union be loos- ened until the odor of gas is detected.
  • Page 18 035-17405-000 Rev. B (0801) TABLE 5 : GAS RATE (CUBIC FEET PER HOUR) ADJUSTMENT OF MANIFOLD GAS PRESSURE SIZ E OF TEST DIAL Turn gas off at main gas valve. Remove 1/8" NPT plug SECONDS FOR ON E from the outlet pressure tap in the main gas valve body REVOLU TION CUB IC FOOT CUBIC FOOT...
  • Page 19 035-17405-000 Rev. B (0801) Turn the electrical and gas supplies back on, and, with wire and connected to the desired motor lead. Place all the burners in operation, check for gas leakage around unused motor leads on Park terminals. Two are provided. the plug with a soap and water solution.

  • Page 20: Accessory Connections

    035-17405-000 Rev. B (0801) ACCESSORY CONNECTIONS damage to the furnace. If twinning of two furnaces is desired, it is necessary to use the accessory twinning kit that is designed for use with these furnaces. The furnace control will allow power switching control of vari- ous accessories.
  • Page 21 035-17405-000 Rev. B (0801) TABLE 6: BLOWER PERFORMANCE CFM - UPFLOW/HORIZONTAL (WITHOUT FILTER) Note: Data below reflects airflows with single return opening, either left or right side or bottom EXTERNAL STATIC PRESSURE, INCHES W.C. MODELS P*HU/G8T-UH/ SPEED L8T-UH / FL8-UH 0.10 0.20...

  • Page 22: Filter Performance

    035-17405-000 Rev. B (0801) TABLE 7: BLOWER PERFORMANCE CFM - DOWNFLOW (WITHOUT FILTER) EXTERNAL STATIC PRESSURE, INCHES W.C. MODELS P*DN / G8T-DN / SPEED L8T-DN 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00 HIGH 1580 1540 1475 1405 1305 1230 1130...

  • Page 23: Operation And Maintenance

    035-17405-000 Rev. B (0801) OPERATION AND MAINTENANCE APPLYING FILTER PRESSURE DROP TO DETERMINE SYSTEM AIRFLOW SEQUENCE OF OPERATION To determine the approximate airflow of the unit with a filter in place, follow the steps below: The following describes the sequence of operation of the fur- nace.
  • Page 24 035-17405-000 Rev. B (0801) The blower motor continues to operate for the amount of time four weeks. Inspect the filters every three weeks after that, set by the fan-off delay "Jumper" located on the ignition con- especially if the system is running constantly. trol board (Figure 16).
  • Page 25 035-17405-000 Rev. B (0801) To reassemble, reverse the procedure, restore power to BLOWER CARE the furnace and verify operation. Even with good filters properly in place, blower wheels and Burner Removal/Cleaning motors will become dust laden after long months of opera- tion.

  • Page 26: Furnace Control Diagnostics

    035-17405-000 Rev. B (0801) Upper Heat Exchanger Access FURNACE CONTROL DIAGNOSTICS Perform steps 1-4 above. The furnace has built-in, self diagnostic capability. If a system problem occurs, a fault code is shown by a blinking red LED. Disconnect vent piping from the vent motor assembly at It is located behind a clear view port in the blower compart- the top panel on the furnace (upflow only).
  • Page 27 035-17405-000 Rev. B (0801) 5 FLASH:This fault is indicated if the normally closed con- STEADY ON: This fault occurs if the gas valve is energized tacts in the rollout switch opens. The rollout control is manu- when there is no call for heat. If this happens the ventor is ally reset.
  • Page 28 035-17405-000 Rev. B (0801) FIGURE 17 : FURNACE EVENT CONTROL SCHEDULE Unitary Products Group...
  • Page 29 035-17405-000 Rev. B (0801) WIRING DIAGRAM - UPFLOW/HORIZONTAL MODELS P*HU/G8T-UH/L8T-UH & FL8-UH (NOTE: The furnace’s control system depends on correct polarity of the power supply.) Unitary Products Group...
  • Page 30 035-17405-000 Rev. B (0801) WIRING DIAGRAM - DOWNFLOW MODELS P*DN/G8T-DN/L8T-DN (NOTE: The furnace’s control system depends on correct polarity of the power supply.) Unitary Products Group...
  • Page 31 035-17405-000 Rev. B (0801) NOTES Unitary Products Group...
  • Page 32 NOTES Subject to change without notice. Printed in U.S.A. 035-17405-000 Rev. B (0801) Copyright © by Unitary Products Group 2000. All rights reserved. Supersedes: 035-17405-000 Rev. A (900) Unitary 5005 Norman Product York Group Drive 73069...

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G8t-uhFl8-uhL8t-uh

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