Page 3 - TABLE OF CONTENTS; SECTION 16: The ROBERTS GORDON
© 200 8 Ro b erts-Gordon LLC All rights reser v ed. N o part of this w ork co v ered b y the copyrights herein may b e reprod u ced or copied in any form or b y any means - graphic, electronic, or mechanical, incl u ding photocopying, recording, taping or information storage and retrie v al systems ...
Page 5 - TABLE OF FIGURES; Figure 6: Standard Vented Heater - Common Vertical Vent
TABLE OF FIGURES Figure 1: Clearances to Combustibles ...................................... 3Figure 2: Air Flow Direction ....................................................... 7Figure 3: Suspension Methods ................................................. 8Figure 4: Vent and Roof Detail ............
Page 7 - SECTION 1: HEATER SAFETY
SECTION 1: H EATER S AFETY 1 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 ...
Page 8 - UHD S; SECTION 2: INSTALLER RESPONSIBILITY; * Halogenated Hydrocarbons; National Standards and Applicable Codes
UHD S TANDARD D UCT F URNACE I NSTALLATION O PERATION AND S ERVICE M ANUAL 2 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...
Page 9 - Manufactured Units; Figure 3; Minimum Required Installation Clearances; through Page 14, Figure 9; Clearances to Combustibles; WARNING
SECTION 3: C RITICAL C ONSIDERATIONS 3 SECTION 3: CRITICAL CONSIDERATIONS3.1 Basic Information 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% th...
Page 10 - on Page; Electrical Supply; See Page 9, Section 6
UHD S TANDARD D UCT F URNACE I NSTALLATION O PERATION AND S ERVICE M ANUAL 4 3.6 Ventilation It is important to ensure that there is adequate air space around the heater to supply air for combustion, ventilation and distribution in accordance with local and national codes on Page 9, Section 6 . 3.7 ...
Page 11 - SECTION 4: NATIONAL STANDARDS AND APPLICABLE CODES; , local ordinances and any special
SECTION 4: N ATIONAL S TANDARDS AND A PPLICABLE C ODES 5 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...
Page 13 - Figure 2; Figure 2: Air Flow Direction
SECTION 5: D UCT H EATER I NSTALLATION 7 SECTION 5: DUCT HEATER INSTALLATION5.1 General To connect the inlet and outlet ducts to the heater, Duct-Mate or similar flanges may be slid over the duct connector flanges supplied on the unit and secured with screws. The connection to the duct then can be m...
Page 14 - Air Flow And Temperature Rise Ranges; Crush Hazard; Nu
UHD S TANDARD D UCT F URNACE I NSTALLATION O PERATION AND S ERVICE M ANUAL 8 5.1.3 Air Flow And Temperature Rise Ranges 5.2 Suspension Four suspension points (3/8" nuts) are located on the top of the heater. Drop rods must be 3/8" diameter mild steel. When handling or supporting the heater f...
Page 15 - Changing Vent and Air Intake Orientation; Refer to; Vent Installation; . For vented units, the vent must terminate
SECTION 6: V ENTING 9 SECTION 6: VENTING 6.1 Changing Vent and Air Intake Orientation The heater is sold with rear horizontal vent and air intake connections. (Only separated combustion models have air intake connection.) 6.2 Venting This heater must be vented in accordance with the rules contained ...
Page 16 - For vent termination; Unvented Operation; Combustion by-products contain a; Horizontal Venting
UHD S TANDARD D UCT F URNACE I NSTALLATION O PERATION AND S ERVICE M ANUAL 10 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 11, Figure 4 through Page 14, Figure 9 . 6.3.1 Standard Vented Heaters (Models UHD[...
Page 17 - Figure 4: Vent and Roof Detail
SECTION 6: V ENTING 11 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 6.8 Vent Material Vent material may be single wall 26 ga. (minimum) galvanized steel or equal thickness stainless steel. Completely se...
Page 19 - Figure 8: Concentric Vent Box; Vertical; bu; NOTE; qu
SECTION 6: V ENTING 13 Figure 7: Separated Combustion Heater - Vertical and Horizontal Vent Termination Figure 8: Concentric Vent Box V ent Termination 12" (31 cm)Minim u m from air inlet to v ent termination (may b e horizontal or v ertical clearance). Air IntakeTermination V ent Air Intake* Ve...
Page 21 - Unvented Installation; Building Ventilation; If the building has a slight negative
SECTION 7: A IR S UPPLY 15 SECTION 7: AIR SUPPLY7.1 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 suppl...
Page 22 - SECTION 8: GAS PIPING
UHD S TANDARD D UCT F URNACE I NSTALLATION O PERATION AND S ERVICE M ANUAL 16 SECTION 8: GAS PIPING A gas meter is connected to the service pipe by the gas supply company. An existing meter should be checked, preferably by the company, to ensure that the meter is adequate for the rate of gas supply ...
Page 23 - NFPA 70 - latest revision; Positioning Thermostats; for wall tag details.; Low Voltage Thermostat with One Heater; Electrical Shock Hazard
SECTION 9: W IRING 17 SECTION 9: WIRING All heater models require constant 120 V/1Ø/60 Hz power supply. Check heater rating plate for electrical rating for proper circuit sizing. For servicing, a disconnect switch of proper electrical rating should be installed in the vicinity of the heater.All heat...
Page 24 - Internal Wiring Diagram
UHD S TANDARD D UCT F URNACE I NSTALLATION O PERATION AND S ERVICE M ANUAL 18 9.3 Internal Wiring Diagram 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 rat...
Page 25 - Ladder Wiring Diagram; PRESSURE SWITCH; THERMOSTAT CONNECTION
SECTION 9: W IRING 19 9.4 Ladder Wiring Diagram 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. For supply conn...
Page 26 - Electrical Connection to the Heater; Junction box is not provided with heater.
UHD S TANDARD D UCT F URNACE I NSTALLATION O PERATION AND S ERVICE M ANUAL 20 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. BX Connector Junction Box Flex...
Page 27 - SECTION 10: OPERATION AND MAINTENANCE; Check that all site wiring is connected in
SECTION 10: O PERATION AND M AINTENANCE 21 SECTION 10: OPERATION AND MAINTENANCE Read this manual carefully before installation, operation, or service of this equipment. All components are accessed via the door secured by four sheet metal screws. Opening the door exposes live electrical connections ...
Page 28 - Figure 11: Automatic Burner Control Sequence; rge time; TOP VIEW
UHD S TANDARD D UCT F URNACE I NSTALLATION O PERATION AND S ERVICE M ANUAL 22 Figure 11: Automatic Burner Control Sequence Figure 12: Gas Valve B u rner Se qu ence for Ignition Control Flame Signal Start Gas V al v e Ignition Spark Thermostat 24 V SHUT DO WN RU N START ts = 10 Seconds Signals O u tp...
Page 29 - Check Gas Rate; through Page
SECTION 10: O PERATION AND M AINTENANCE 23 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. To adjust...
Page 30 - SECTION 11: USER INSTRUCTIONS; LED INDICATION FAULT MODE
UHD S TANDARD D UCT F URNACE I NSTALLATION O PERATION AND S ERVICE M ANUAL 24 SECTION 11: USER INSTRUCTIONS 11.1 User Instructions The UHD[X][S][R] Series heaters are fully automatic and operate from the external controls fitted on site. 11.2 Heater Operation When the heater has been switched on by ...
Page 31 - through
SECTION 12: S ERVICING 25 SECTION 12: SERVICING 12.1 Servicing Instructions After start-up, the heater will require maintenance to be carried out annually. If the heater is used in a dirty or dusty area, more frequent maintenance may be required. IMPORTANT: After any maintenance or repair work, alwa...
Page 32 - Maintenance Checklist; The Vicinity of the Heater; See Page 3, Section 3; Heat Exchanger; See Page 16, Section 8
UHD S TANDARD D UCT F URNACE I NSTALLATION O PERATION AND S ERVICE M ANUAL 26 12.7 Maintenance Checklist Installation Code and Annual Inspections: All installations and service of ROBERTS GORDON ® equipment must be performed by a contractor qualified in the installation and service equipment sold an...
Page 34 - START
UHD S TANDARD D UCT F URNACE I NSTALLATION O PERATION AND S ERVICE M ANUAL 28 SECTION 13: TROUBLESHOOTING13.1 General Fan and limit s w itch are operating normally. Replace temperat u re limit s w itch. Ens u re air flo w thro u gh heat exchanger is appropriate per the rating plate. If pro b lems pe...
Page 35 - Troubleshooting For Automatic Ignition Burner Systems; Conduct start-up procedure as shown
SECTION 13: T ROUBLESHOOTING 29 13.2 Troubleshooting For Automatic Ignition Burner Systems If pro b lems persist, contact Ro b erts-Gordon LLC at www .rg-inc.com Heater Operating TROUBLESHOOT ENDS. N o Trace fa u lt in s u per v ision system. See Tro ub leshooting for Flame S u per v ision System se...
Page 36 - Troubleshooting for Flame Supervision System; Minimum flame probe current 1
UHD S TANDARD D UCT F URNACE I NSTALLATION O PERATION AND S ERVICE M ANUAL 30 13.3 Troubleshooting for Flame Supervision System NOTE: Minimum flame probe current 1 μ A DC. Typical flame probe current 3-5 μ A DC. To measure flame current, connect a 0 - 50 μ A DC meter in series with the flame probe. ...
Page 37 - Troubleshooting for Gas Valves
SECTION 13: T ROUBLESHOOTING 31 13.4 Troubleshooting for Gas Valves 13.5 Troubleshooting for Flue Blower V al v e fa u lty. Replace w ith one of correct type. Fa u lt else w here. Correct press u re pro b lem. If pro b lems persist, contact Ro b erts-Gordon LLC at www .rg-inc.com V al v e Operating ...
Page 38 - SECTION 14: REPLACEMENT PARTS; Burner Components; See; Flexi
UHD S TANDARD D UCT F URNACE I NSTALLATION O PERATION AND S ERVICE M ANUAL 32 SECTION 14: REPLACEMENT PARTS See warnings and important information on Page 25, Section 12 before removing or replacing parts. Burner Components All serviceable burner parts are accessed by the door on the side of the hea...
Page 39 - Burner Compartment; MODEL; Separated combustion; Unscrew
SECTION 14: R EPLACEMENT P ARTS 33 14.2 Burner Compartment 14.2.1 Burner Injectors MODEL UHD[X][S][R] 150 UHD[X][S][R] 175 UHD[X][S][R] 200 UHD[X][S][R] 225 UHD[X][S][R] 250 UHD[X][S][R] 300 UHD[X][S][R] 350 UHD[X][S][R] 400 Orifice Quantity 7 8 9 10 11 12 14 14 Natural Gas (G20) Orifice Marking 43 ...
Page 40 - Ignition Electrode and Flame Probe
UHD S TANDARD D UCT F URNACE I NSTALLATION O PERATION AND S ERVICE M ANUAL 34 14.3 Ignition Electrode and Flame Probe Description Part Number Qty. Spark Electrode 90427411 1 Automatic Ignition Flame Probe 90439300 1 Transformer 90436900K 1 Ignition Module 90434008 1 Inshot Burners UHD[X][S][R] 150 9...
Page 41 - Carry out a start-up after working on or changing a flue blower.; Refit in reverse order.
SECTION 14: R EPLACEMENT P ARTS 35 14.4 Heat Exchanger The heat exchanger consists of a four-pass design with 1.75" outer diameter [409 stainless steel] tube. The tube plates are made of [aluminized steel] [409 stainless steel]. The tube suppor ts are made of [galvannealed steel] [409 stainless ...
Page 42 - Ignition Control; Remove the electrical connections to the switch.
UHD S TANDARD D UCT F URNACE I NSTALLATION O PERATION AND S ERVICE M ANUAL 36 14.6 Pressure Switch Pull off 3 way connector. Spring open plastic clips of mounting cradle. Replace with correct type ofpressure switch for model. The pressure switches are color coded for each pressure setting.Carry out ...
Page 43 - REAR VIEW
SECTION 15: S PECIFICATIONS 37 SECTION 15: SPECIFICATIONS15.1 Dimension Data 2.4" (6 cm) A B REAR VIEW END VIEW H J TOP VIEW Heater m u st b e s u pported at these points from a b o v e or b elo w . 4 x 3/ 8 " Capti v e Nu ts Pro v ided Electrical S u pply Air Intake (UHD[X][S][R] only) Fl u...
Page 45 - SECTION 16: THE ROBERTS GORDON; COMBAT
SECTION 16: T HE ROBERTS GORDON ® COMBAT ® UHD-S ERIES W ARRANTY 39 SECTION 16: THE ROBERTS GORDON ® COMBAT ® UHD-SERIES WARRANTY ROBERTS GORDON ® WILL PAY FOR: Within 24 months from date of purchase by buyer or 27 months from date of shipment by Roberts-Gordon (whichever comes first), replacement p...
Page 47 - OWNER WARRANTY REGISTRATION CARD; at; Mail o; nu; W a r m A i r H e a t i n g
® OWNER WARRANTY REGISTRATION CARD Abou t t he Owner: Name:__________________________________________________________________________________________________Add r ess:______________________________________City:_________________________ S tate:__________Zip Code:________ Pho n e:_____________________...
Page 50 - Attach this information to the wall near the ROBERTS GORDON
WARNING © 200 8 Ro b erts-Gordon LLC www .rg-inc.com Printed in U.S.A. P/ N 91039 8 31 Attach this information to the wall near the ROBERTS GORDON ® heater Read the Installation, Operation and Service Manual thorou g hly before installation, operation or service. OPERATING INSTRUCTIONS 1. STOP! Read...
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