Roberts Gorden UHD[X][S][R] 100 Installation & Operation Manual

Uhd-series tubular duct furnace (low profile range) installation, operation & service manual

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UHD-Series

Tubular Duct Furnace

(Low Profile Range)

Installation, Operation

& Service Manual

Models UHD[X][S][R]

75, 100, 125

Installer

Please take the time to read and understand

these instructions prior to any installation.

Installer must give a copy of this manual to the owner.

Owner

Keep this manual in a safe place in order to provide

your serviceman with necessary information.

Roberts-Gordon LLC

1250 William Street

P.O. Box 44

Buffalo, New York 14240-0044

Telephone: 716.852.4400

Fax: 716.852.0854

Toll Free: 800.828.7450

www.rg-inc.com

Quality in Any Language™

P/N 113000NA 11/08 Orig.

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Summary of Contents for Roberts Gorden UHD[X][S][R] 100

Page 1 UHD-Series Tubular Duct Furnace (Low Profile Range) Installation, Operation & Service Manual Models UHD[X][S][R] 75, 100, 125 Installer Please take the time to read and understand these instructions prior to any installation. Installer must give a copy of this manual to the owner.
Page 3: Table Of Contents
TABLE OF CONTENTS SECTION 1: Heater Safety... 1 1.1 Manpower Requirements ... 1 SECTION 2: Installer Responsibility ... 2 2.1 Wall Tag ... 2 2.2 Corrosive Chemicals... 2 2.3 National Standards and Applicable Codes ... 2 SECTION 3: Critical Considerations ... 3 3.1 Basic Information ...
Page 5 TABLE OF FIGURES Figure 1: Clearances to Combustibles ... 3 Figure 2: Air Flow Direction... 7 Figure 3: Suspension Methods ... 8 Figure 4: Shelf-Mounting Methods... 9 Figure 5: Wall Shelf Mounting and Suspension ... 9 Figure 6: Vent and Roof Detail ... 13 Figure 7: Standard Vented Heater - Vertical and Horizontal Vent Termination ...
Page 7: Section 1: Heater Safety
SECTION 1: HEATER SAFETY Your Safety is Important to Us! This symbol is used throughout the manual to notify you of possible fire, electrical or burn hazards. Please pay special attention when reading and following the warnings in these sections. Installation, service and quarterly inspection of heater must be done by a contractor qualified in the installation and service of gas-fired...
Page 8: Section 2: Installer Responsibility
UHD L ROFILE URNACE NSTALLATION SECTION 2: INSTALLER RESPONSIBILITY The installer is responsible for the following: • To install the heater, as well as the gas and electrical supplies, in accordance with applicable specifications and codes. Roberts-Gordon recommends the installer contact a Local Building Inspector or Fire Marshal for guidance.
Page 9: Section 3: Critical Considerations
UHD[X][S][R] heaters have automatic ignition burners for ON/OFF operation only. 3.2 Manufactured Units Gas-fired, power-vented duct furnace with tubular heat exchanger. Units shall have a minimum of 82% thermal efficiency. The standard unit shall consist of a non-separated combustion design with an aluminized heat exchanger.
Page 10: Ventilation
UHD L ROFILE URNACE NSTALLATION 3.6 Ventilation WARNING Carbon Monoxide Hazard Heaters may be installed vented or unvented. Vented heaters must be vented outdoors. Unvented heaters must be installed in buildings with ventilation rates as per section 6.4. Failure to follow these instructions can result in death or injury.
Page 11: Section 4: National Standards And Applicable Codes
SECTION 4: NATIONAL STANDARDS AND APPLICABLE CODES 4.1 Gas Codes The type of gas appearing on the name plate must be the type of gas used. Installation must comply with national and local codes and requirements of the local gas company. United States: Refer to NFPA 54/ ANSI Z223.1 - latest revision, National Fuel Gas Code.
Page 12: High Altitude
UHD L ROFILE URNACE NSTALLATION PERATION AND ERVICE ANUAL 4.6 High Altitude These heaters are CSA-approved (without modifications) for installations up to 2000' (610 m) in US and Canada. CSA approved heaters installed above 2000' (610 m) must be de-rated. For installations above 2000' (610 m) in US, consult factory for information on burner de- rating.
Page 13: Section 5: Duct Heater Installation
Figure 2 and may not be reversed. The air flow must be adjusted such that it is within the acceptable 5.1.1 Minimum Inlet Duct Length Model UHD[X][S][R] 75 UHD[X][S][R] 100 &125 5.1.2 Temperature Rise and Pressure Drop Ranges UHD[X][S][R] 75 Airflow Temperature...
Page 14: Shelf Mounting And Suspension
UHD L ROFILE URNACE NSTALLATION 5.2 Shelf Mounting and Suspension WARNING Crush Hazard Use 3/8" threaded rod minimum. Failure to follow these instructions can result in death, injury or property damage. Four suspension points (3/8" nuts) are located on the top of the heater. Drop rods must be 3/8" diameter mild steel.
Page 15: Figure 4: Shelf-Mounting Methods
Figure 4: Shelf-Mounting Methods Shelf Mounting Brackets Figure 5: Wall Shelf Mounting and Suspension Wall Shelf Mounting Wall Mounting Bracket Arm (Right & Left) Wall Mounting Bracket Diagonal Wall Mounting Bracket Vertical Hardware provided to construct mounting bracket assembly only. Description Wall Shelf Mounting Bracket Kit Wall Suspension Mounting Bracket Kit...
Page 16: Section 6: Venting
UHD L ROFILE URNACE NSTALLATION SECTION 6: VENTING WARNING Carbon Monoxide Hazard Heaters may be installed vented or unvented. Vented heaters must be vented outdoors. Unvented heaters must be installed in buildings with ventilation rates as per section 6.4. Failure to follow these instructions can result in death or injury.
Page 17: Unvented Operation
Vents and air intakes must be adequately supported so that the heater does not bear the weight of the pipes. For vent termination See Page 13, Figure 6 through Page 16, Figure 11. 6.3.1 Standard Vented Heaters (Models UHD[X][R] 75 - 125) The vent must be fitted with a low resistance terminal.
Page 18: Vent Material
UHD L ROFILE URNACE NSTALLATION and additional sealing measures (high temperature silicone at all seams) are required. The entire vent should be insulated with foil faced fiberglass insulation (1/2" thick, 1-1/2# density minimum). 6.7.1 Maximum Vent Lengths Model UHD[X][S][R] 75, 100, 125 Number of Elbows 40 ft (12.2 m) 35 ft (10.7 m)
Page 19: Figure 6: Vent And Roof Detail
SECTION 6: V ENTING Figure 6: Vent and Roof Detail Figure 7: Standard Vented Heater - Vertical and Horizontal Vent Termination Model Vent Diameter Part Number UHD[X][R] 75 - 125 4" (10 cm) 90502102...
Page 20: Figure 8: Standard Vented Heater - Common Vertical Vent
UHD L ROFILE URNACE NSTALLATION PERATION AND ERVICE ANUAL Figure 8: Standard Vented Heater - Common Vertical Vent Termination...
Page 21: Figure 9: Separated Combustion Heater - Vertical And
Figure 9: Separated Combustion Heater - Vertical and Horizontal Vent Termination Air Intake & Model Vent Diameter UHD[X]S[R] 75 - 125 4" (10 cm) Figure 10: Concentric Vent Box Seal joint between single wall and Type B vent with silicone sealant. Combustion Air to Heater Exhaust...
Page 22: Figure 11: Concentric Vertical And Horizontal Vent Termination
UHD L ROFILE URNACE NSTALLATION Figure 11: Concentric Vertical and Horizontal Vent Termination - Separated Combustion Heater Description Concentric Vent Kit Concentric Vent Box Top & Side Assembly Concentric Vent Box Bottom Assembly Screw #6 x 3/8 Self Drilling 4" (10 cm) Vent Terminal with Baffle Plate 6"...
Page 23: Section 7: Air Supply
SECTION 7: A UPPLY SECTION 7: AIR SUPPLY 7.1 Separated Combustion Installation When installed as a separated combustion heater (UHD[X]S[R]), the air for combustion is drawn in from outside the building. 7.2 Unvented Installation It is important to ensure that there is adequate fresh air supply at all times for both combustion and heating requirements in accordance with local and national codes.
Page 24: Section 8: Gas Piping
UHD L ROFILE URNACE NSTALLATION SECTION 8: GAS PIPING Fire Hazard Connect gas supply according to Figure 12. Do not use gas supply pipe and electrical connections to support the heater’s weight. Gas can leak if not installed properly. Failure to follow these instructions can result in death, injury or property damage.
Page 25: Section 9: Wiring
SECTION 9: WIRING WARNING Electrical Shock Hazard Disconnect electrical and gas supply before servicing. This appliance must be connected to a properly grounded electrical source. Failure to follow these instructions can result in death or electrical shock. All heater models require constant 120 V/1Ø/ 60 Hz power supply.
Page 26: Internal Wiring Diagram
UHD L ROFILE URNACE NSTALLATION 9.3 Internal Wiring Diagram FLUE BLOWER PRESSURE SWITCH ORANGE LIMIT SWITCH (UHD 300, 350, 400 ONLY) ORANGE MANUAL RESET LIMIT SWITCH (RESIDENTAL UNITS ONLY) SENSE ELECTRODE IMPORTANT: For field wiring into service junction box, or if any of the original wire supplied with the heater must be replaced, it must be replaced with wiring material having a temperature rating of at least 105 °C (221 °F) and 600 V.
Page 27: Ladder Wiring Diagram
9.4 Ladder Wiring Diagram FLAME SENSOR FLAME IGNITION MODULE ELECTRODE SPARK IMPORTANT: For field wiring into service junction box, or if any of the original wire supplied with the heater must be replaced, it must be replaced with wiring material having a temperature rating of at least 105 °C (221 °F) and 600 V.
Page 28: Electrical Connection To The Heater
UHD L ROFILE URNACE NSTALLATION PERATION AND ERVICE ANUAL 9.5 Electrical Connection to the Heater IMPORTANT: Junction box is not provided with heater. Conduit can also be attached directly to heater with wire junction made within the heater cabinet.
Page 29: Section 10: Operation And Maintenance
SECTION 10: OPERATION AND MAINTENANCE WARNING Explosion Hazard Installation, service and annual inspection must be done by a contractor qualified in the installation and service of gas-fired heating equipment or your gas supplier. Turn off gas and electrical supplies before performing service or maintenance.
Page 30: Figure 13: Automatic Burner Control Sequence
UHD L ROFILE URNACE NSTALLATION Figure 13: Automatic Burner Control Sequence Burner Sequence for Ignition Control START Thermostat 24 V Flue Blower 30 Seconds Purge* Pressure Switch Ignition Spark Start Gas Valve Flame Signal *Purge time begins at pressure switch change over. Required Incoming Signals Signals Output By Control Figure 14: Gas Valve...
Page 31: Complete Start-Up
10.2.2 Start-Up the Gas Valve (All Gases) 10.2.2.1 Check Burner Gas Pressure 1. Remove the plug in the outlet (burner) pressure test point and connect a pressure tap and a manometer. 2. With the burner firing, measure the pressure on the manometer.
Page 32: Section 11: User Instructions
UHD L ROFILE URNACE NSTALLATION SECTION 11: USER INSTRUCTIONS WARNING Explosion Hazard Installation, service and annual inspection must be done by a contractor qualified in the installation and service of gas-fired heating equipment or your gas supplier. Turn off gas and electrical supplies before performing service or maintenance.
Page 33: Simple Troubleshooting
11.4.2 To Turn Heater Off Set the thermostat to the "OFF" position. The burner will turn off immediately. To restart, turn the thermostat above room temperature. 11.5 Simple Troubleshooting Some possible reasons for the heater not operating are: 1. Gas supply not "ON". 2.
Page 34: Section 12: Servicing
UHD L ROFILE URNACE NSTALLATION SECTION 12: SERVICING WARNING Explosion Hazard Installation, service and annual inspection must be done by a contractor qualified in the installation and service of gas-fired heating equipment or your gas supplier. Turn off gas and electrical supplies before performing service or maintenance.
Page 35: Maintenance Checklist
12.7 Maintenance Checklist WARNING Explosion Hazard Installation, service and annual inspection must be done by a contractor qualified in the installation and service of gas-fired heating equipment or your gas supplier. Turn off gas and electrical supplies before performing service or maintenance. Failure to follow these instructions can result in death, injury or property damage.
Page 36 UHD L ROFILE URNACE NSTALLATION Gas Line and Shut-off Check for gas leaks. Valves See Page 18, Section 8. Burner Observation Make sure it is clean and free of cracks or holes. Window Clean and replace as required. Flue Blower Scroll, Wheel Compressed air or a vacuum cleaner may be used to clean dust and dirt.
Page 37: Section 13: Troubleshooting
SECTION 13: TROUBLESHOOTING 13.1 General START Are gas & electrical supplies on? UHD 75: Press in reset button on manual reset limit switch. UHD 100 - 125: Wait Is ignition control showing a 10 - 15 minutes for limit "4 flashes" LED code? switch to cool.
Page 38: Troubleshooting For Automatic Ignition Burner Systems
UHD L ROFILE URNACE NSTALLATION 13.2 Troubleshooting For Automatic Ignition Burner Systems START Are gas & electrical supplies on? Are external controls (i.e. Thermostat) on? UHD 75: Press in reset button on manual reset limit switch. UHD 100 - 125: Wait Is ignition control showing a 10 - 15 minutes for limit "4 flashes"...
Page 39: Troubleshooting For Flame Supervision System
13.3 Troubleshooting for Flame Supervision System To measure flame current, connect a 0 - 50 μA DC meter in series with the flame probe. If the meter reads negative values, then reverse the test leads. START Connect a DC ammeter in series with the flame probe.
Page 40: Troubleshooting For Gas Valves
UHD L ROFILE URNACE NSTALLATION 13.4 Troubleshooting for Gas Valves Is gas pressure at inlet of the valve correct for gas type? Does gas pressure at outlet outlet of valve return to zero or lower when valve turns off? TROUBLESHOOT ENDS. 13.5 Troubleshooting for Flue Blower START Does flue blower run...
Page 41: Section 14: Replacement Parts
SECTION 14: REPLACEMENT PARTS WARNING Explosion Hazard Installation, service and annual inspection must be done by a contractor qualified in the installation and service of gas-fired heating equipment or your gas supplier. Turn off gas and electrical supplies before performing service or maintenance. Failure to follow these instructions can result in death, injury or property damage.
Page 42: Burner Compartment
Manifold Remove manifold screws and pull out manifold Manifold Unscrew Orifices Marking Folded UHD[X][S][R] 75 UHD[X][S][R] 100 91930049 91930046 1.15 mm 1.25 mm 91930115 91930125 The burner compartment is a sealed compartment. Following any work, re-seal the compartment with the gas pipe rubber seal fully in place and all screws fitted and tight.
Page 43: Ignition Electrode And Flame Probe
Spark Electrode Automatic Ignition Flame Probe Transformer Ignition Module Inshot Burners UHD[X][S][R] 75 Inshot Burners UHD[X][S][R] 100 Inshot Burners UHD[X][S][R] 125 Limit Switch Manual Reset Limit Switch (75 only) 14.4 Heat Exchanger The heat exchanger consists of a six-pass design with 1.5" outer diameter [aluminized steel] [409 stainless steel] tube.
Page 44: Flue Blower Vertical Installation
Flexible Air Duct to Vent Box fixing screws UHD[X][S][R] 75 UHD[X][S][R] 100 90710404 To remove the blower, remove screws securing the fan and mounting plate to the vent box. To remove the blower from the mounting plate, remove screws.
Page 45: Pressure Switch
1. Remove the electrical connections to the switch. 2. Unscrew the two screws securing the switch. 3. Fit a new switch with two screws. 4. Reconnect the electrical connections and test operation. UHD[X][S][R] 75 UHD[X][S][R] 100 90439810 90439810 black black...
Page 46: Section 15: Specifications
UHD L ROFILE URNACE NSTALLATION SECTION 15: SPECIFICATIONS 15.1 Dimension Data TOP VIEW 17.63" (45 cm) 18.25" 16.63" (46 cm) (42 cm) REAR VIEW 28.5" (72 cm) Height Duct Connector Flange Center of Flue [Top Option] Center of Flue Minimum Inlet Duct Length Recommended Mounting Height to Heater Base Weight PERATION AND...
Page 47: General Technical Data Table
15.2 General Technical Data Table Full Load Amps @ 115 V Minimum Air Volume Temperature Rise @ Minimum Air Volume Heat Exchanger Pressure Drop @ Minimum Air Volume Maximum Air Volume Temperature Rise @ Maximum Air Volume Heat Exchanger Pressure Drop @ Maximum Air Volume Flue Size/Air Intake** *Do not exceed the maximum length of flue stated or heater may not operate properly.
Page 48 UHD L ROFILE URNACE NSTALLATION PERATION AND ERVICE ANUAL...
Page 49: Section 16: Roberts Gordon
SECTION 16: ROBERTS GORDON ® ROBERTS GORDON WILL PAY FOR: Within 24 months from date of purchase by buyer or 27 months from the date of shipment by Roberts-Gordon (whichever comes first), replacement parts will be provided free of charge for any part of the product which fails due to a manufacturing or material defect.
Page 51: Owner Warranty Registration Card
OWNER WARRANTY REGISTRATION CARD Roberts Gordon LLC • 1250 William Street, P.O. Box 44 • Buffalo, NY 14240-0044 • Phone: 716-852-4400 • Fax: 716-852-0854 About the Owner: Name:__________________________________________________________________________________________________ Address:______________________________________City:_________________________ State:__________Zip Code:________ Phone:_________________________ Fax:_________________________ E-mail:______________________________________ About the Installer: Name:__________________________________________________________________________________________________ Address:______________________________________City:_________________________ State:_________Zip Code:_________ Phone:__________________________Fax:_________________________ E-mail:______________________________________ Purchased From (if different than installer): Name:__________________________________________________________________________________________________...
Page 54 Attach this information to the wall near the ROBERTS GORDON Read the Installation, Operation and Service Manual thoroughly before installation, operation or service. OPERATING INSTRUCTIONS 1. STOP! Read all safety instructions on this information sheet. 2. Open the manual gas valve in the heater supply line. 3.

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Roberts Gorden UHD[X][S][R] 100 Installation & Operation Manual

Section 1: Heater Safety

Section 2: Installer Responsibility

Section 3: Critical Considerations

Section 4: National Standards and Applicable Codes

Section 5: Duct Heater Installation

Section 6: Venting

Section 7: Air Supply

Section 8: Gas Piping

Section 9: Wiring

Section 10: Operation and Maintenance

Section 11: User Instructions

Section 12: Servicing

Section 13: Troubleshooting

Section 14: Replacement Parts

Section 15: Specifications

Section 16: Roberts Gordon

UHD-Series Warranty

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