Roberts Gorden 125, 100, 75 User Manual

Page 1

FOR YOUR SAFETY

WARNING

Installation must be done by a contractor qualified in the installation and service of gas-fired heating equipment or your gas supplier.

Improper installation, adjustment, alteration, service or maintenance can result in death, injury or property damage. Read the Installation, Operation and Service Manual thoroughly before installing or servicing this equipment.

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.

If you smell gas:

1. Open windows.

2. DO NOT try to light any appliance.

3. DO NOT use electrical switches.

4. DO NOT use any telephone in your building.

5. Extinguish any open flame.

6. Leave the building.

7. Immediately call your local gas supplier after leaving the building. Follow the gas supplier’s instructions.

8. If you cannot reach your gas supplier, call the Fire Department.

Combat

UHD-Series

Tubular Duct Furnace

(Low Profile Range)

WARNING

Fire Hazard

Keep all flammable objects, liquids and vapors the minimum required clearances to combustibles away from heater.

Some objects will catch fire or explode when placed close to heater.

Failure to follow these instructions can result in death, injury or property damage.

Installation, Operation

& Service Manual

Models UHD[X][S]

75, 100, 125

Roberts-Gordon LLC

1250 William Street P.O. Box 44 Buffalo, New York 14240-0044 Telephone: +1.716.852.4400 Fax: +1.716.852.0854 Toll Free: 800.828.7450

www.robertsgordon.com www.rg-inc.com

P/N 113000NA 09/12 Rev B

Page 2

Page 3

POUR VOTRE SECURITE

Si vous sentez une odeur de gaz:

1. Ouvrez les fenêtres.

2. N’essayez PAS d’allumer un appareil.

3. N’utilisez PAS d’interrupteurs électriques.

4. N’utilisez PAS de téléphone dans votre bâtiment.

5. Eteignez toute flamme nue.

6. Quittez le bâtiment.

7. Après avoir quitté le bâtiment, appelez immédiatement votre fournisseur local de gaz. Suivez les instructions du fournisseur de gaz.

8. Si vous ne pouvez pas joindre votre fournisseur de gaz, appelez le service d’incendie.

Combat

UHD-Series

Appareil de chauffage conduit à

échangeur tubulaire

AVERTISSEMENT

Risque d’incendie

Garder tous les objets, liquides ou vapeurs inflammables à la distance minimale de l’unité de chauffage requise avec les matériaux combustibles.

Certains objets prendront feu ou exploseront s’ils sont placés à proximité de l’unité de chauffage.

Le non respect de ces instructions peut entraîner la mort, des blessures corporelles ou des dommages matériels.

(Gamme compacte)

Manuel d’installation,

d’operation, et de service

Modèles UHD[X][S]

75, 100, 125

AVERTISSEMENT

L’installation, le réglage, la modification, la réparation ou la maintenance inadapté peut entraîner la mort, des blessures ou des dommages matériels. Lire attentivement le manuel d'installation, d'utilisation et d'entretien avant d’installer ou de réparer cet équipement.

L’installation doit être effectuée par un entrepreneur qualifié dans l'installation et l'entretien d'appareils de chauffage au gaz ou par votre fournisseur de gaz.

Installateur

Veuillez prendre le temps de lire et de comprendre ces

instructions avant toute installation. L’installateur doit

donner un exemplaire de ce manuel au propriétaire.

Propriétaire

Garder ce manuel dans un endroit sûr pour fournir les

informations nécessaires au personnel d’entretien.

Roberts-Gordon LLC

1250 William Street P.O. Box 44 Buffalo, New York 14240-0044 Téléphone: +1.716.852.4400 Fax: +1.716.852.0854 Numéro sans fraís: 800.828.7450

www.robertsgordon.com www.rg-inc.com

P/N 113000FC 09/12 Rev B

Page 4

Page 5

Roberts-Gordon LLC

All rights reserved. No part of this work covered by the copyrights herein may be reproduced or copied in any form or by any means - graphic, electronic, or mechanical, including photocopying, recording, taping or information storage and retrieval systems - without the written permission of Roberts-Gordon LLC.

TABLE OF CONTENTS

SECTION 1: Heater Safety...................................................... 1

1.1 Manpower Requirements ............................................. 1

1.2 Safety Labels and Their Placement .............................1

1.3 California Proposition 65 .............................................. 1

SECTION 2: Installer Responsibility .....................................4

2.1 Wall Tag.......................................................................4

2.2 Corrosive Chemicals .................................................... 4

2.3 National Standards and Applicable Codes .................. 4

SECTION 3: Critical Considerations .....................................5

3.1 Basic Information.........................................................5

3.2 Manufactured Units...................................................... 5

3.3 Location and Suspension ............................................ 5

3.4 Minimum Required Installation Clearances .................5

3.5 Ventilation ....................................................................5

3.6 Gas Supply .................................................................. 5

3.7 Electrical Supply .......................................................... 5

3.8 Vent.............................................................................. 5

SECTION 4: Clearances to Combustibles.............................6

4.1 Required Clearances to Combustibles.........................6

4.2 Clearances to Combustibles ........................................ 6

SECTION 5: National Standards and Applicable Codes .....7

5.1 Gas Codes................................................................... 7

5.2 Aircraft Hangars ........................................................... 7

5.3 Parking Structures and Repair Garages......................7

5.4 Electrical ...................................................................... 7

5.5 Venting .........................................................................7

5.6 High Altitude ................................................................ 8

SECTION 6: Duct Heater Installation..................................... 9

6.1 General........................................................................9

6.2 Shelf Mounting and Suspension ................................ 10

6.3 Wall Mounting............................................................ 10

SECTION 7: Venting.............................................................. 12

7.1 Changing Vent and Air Intake Orientation .................. 12

7.2 Venting .......................................................................12

7.3 Vent Installation .......................................................... 12

7.4 Unvented Operation ................................................... 13

7.5 Horizontal Venting ......................................................13

7.6 Vertical Venting........................................................... 13

7.7 Length Requirements ................................................. 13

7.8 Vent Material............................................................... 14

7.9 Replacing an Existing Heater in a Venting System..... 14

SECTION 8: Air Supply......................................................... 18

8.1 Separated Combustion Installation ............................ 18

8.2 Unvented Installation ................................................. 18

8.3 Building Ventilation .................................................... 18

8.4 Outside Combustion Air Supply................................. 18

SECTION 9: Gas Piping........................................................19

9.1 Connections............................................................... 19

SECTION 10: Wiring ..............................................................21

10.1 Positioning Thermostats .......................................... 21

10.2 Low Voltage Thermostat with One Heater................21

10.3 UHD[X][S] Series Internal Wiring Diagram ...............22

10.4 UHD[X][S] Series Ladder Wiring Diagram................23

10.5 Electrical Connection to the Heater..........................24

SECTION 11: Operation and Maintenance ..........................25

11.1 Pre-Start-Up Checks.................................................25

11.2 Begin Start-Up ..........................................................25

11.3 Complete Start-Up ....................................................27

SECTION 12: User Instructions............................................28

12.1 Heater Operation......................................................28

12.2 Common User Controls............................................28

12.3 Lighting Instructions .................................................29

12.4 Simple Troubleshooting ............................................29

SECTION 13: Servicing.........................................................30

13.1 Servicing Instructions...............................................30

13.2 Burner Maintenance.................................................30

13.3 Heat Exchanger Maintenance ..................................30

13.4 Gas Valve Maintenance ...........................................30

13.5 Flue Blower..............................................................30

13.6 Venting and Air Intake Pipe......................................30

13.7 Maintenance Checklist .............................................31

SECTION 14: Troubleshooting.............................................33

14.1 General ....................................................................34

14.2 Troubleshooting For Automatic Ignition Burner

Systems ...................................................................35

14.3 Troubleshooting for Flame Supervision System .......36

14.4 Troubleshooting for Gas Valves................................37

14.5 Troubleshooting for Flue Blower ...............................37

SECTION 15: Replacement Parts.........................................38

15.1 Gas Valve.................................................................38

15.2 Burner Compartment ...............................................39

15.3 Ignition Electrode and Flame Probe .........................40

15.4 Heat Exchanger .......................................................40

15.5 Flue Blower Vertical Installation ...............................41

15.6 Pressure S

15.7 Ignition Control .........................................................42

15.8 Limit Switches ..........................................................42

SECTION 16: Specifications.................................................43

16.1 Dimension Data........................................................43

16.2 General Technical Data Table ..................................44

16.3 Technical Data Table ................................................44

SECTION 17: ROBERTS GORDON

witch........................................................42

COMBAT®

UHD-Series Warranty.....................................46

Printed in U.S.A.

Page 6

Page 7

TABLE OF FIGURES

Figure 1: UHD [X][S] 75 Label Placement ................................ 2

Figure 2: UHD [X][S] 100-125 Label Placement........................3

Figure 3: Clearances to Combustibles ......................................6

Figure 4: Air Flow Direction ....................................................... 9

Figure 5: Suspension Methods ............................................... 10

Figure 6: Shelf-Mounting Methods .......................................... 11

Figure 7: Wall Shelf Mounting and Suspension ...................... 11

Figure 8: Vent and Roof Detail ................................................ 14

Figure 9: Standard Vented Heater - Vertical and Horizontal

Vent Termination...................................................... 15

Figure 10: Standard Vented Heater - Common Vertical

Vent Termination...................................................... 15

Figure 11: Separated Combustion Heater - Vertical and

Horizontal Vent Termination..................................... 16

Figure 12: Concentric Vent Box............................................... 16

Figure 13: Concentric Vertical and Horizontal Vent

Termination - Separated Combustion Heater .......... 17

Figure 14: Gas Connection ..................................................... 20

Figure 15: Automatic Burner Control Sequence...................... 26

Figure 16: Gas Valve for Models UDH[X][S] 75 – 125.............26

Figure 17: Manual Reset Limit Switch .....................................29

Figure 18: LED Diagnostic Codes...........................................29

Page 8

Page 9

SECTION 1: HEATER SAFETY

Yo ur 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, at a minimum, annual inspection of heater must be done by a contractor qualified in the installation and service of gas-fired heating equipment. Read this manual carefully before installation, operation or service of this equipment. Heaters are not approved for residential installations. These instructions, the layout drawing, local codes and ordinances and applicable standards that apply to gas piping, electrical wiring, venting, etc. must be thoroughly understood before proceeding with the installation. Protective gear is to be worn during installation, operation and service. Thin sheet metal parts, including the various venting components, have sharp edges. To prevent injury, the use of work gloves is recommended.

SECTION 1: HEATER SAFETY

1.2 Safety Labels and Their Placement

Product safety signs or labels should be replaced by the product user when they are no longer legible. Please contact Roberts-Gordon LLC or your

ROBERTS GORDON

independent distributor to obtain replacement signs or labels. See Page 2, Figure 1 through Page 3, Figure 2.

1.3 California Proposition 65

In accordance with California Proposition 65 requirements, a warning label must be placed in a highly visible location on the outside of the equipment (i.e. near equipment's serial plate). See label placement drawing on Page 2, Figure 1 through Page 3, Figure 2 for label location. Avoid placing label on areas with extreme heat, cold, corrosive chemicals or other elements. To order additional labels, please contact Roberts-Gordon

LLC or your ROBERTS GORDON

independent

distributor.

Before installation, check that the local distribution conditions, nature of gas and pressure and adjustment of the appliance are compatible.

This heater must be applied and operated under the general concepts of reasonable use and installed using the best building practices. This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety. Children should be supervised to ensure that they do not play with the appliance. For additional copies of the Installation, Operation and Service Manual, please contact RobertsGordon LLC.

1.1 M anp o wer Re q uirements

To prevent personal injury and damage to the heater, two persons will be required for installation.

1 of 47

Page 10

UHD LOW PROFILE DUCT FURNACE INSTALLATION OPERATION AND SERVICE MANUAL

Description Part Number

Logo Label 91040030 Cut Hazard Label 91010430 Vent Length Label 91039505 Vent to Outdoors Label 91010427 Warning Label 91010429 Rating Plate Label 91039802 Installation Label 91010431 Instruction Location Label 91010433 Lighting Instruction Label 91010425 Venting Arrangement Label* 91010426 Manual Reset Switch Label 91010428 Proposition 65 Label 91070015

* For separated combustion units only

Figure 1: UHD[X][S] 75 Label Placement

2 of 47

Page 11

Figure 2: UHD[X][S] 100-125 Label Placement

WARNING

Printed in the U.S.A./Imprimé aux Etats-Unis P/N 91010429

www.rg-inc.com

Fire Hazard Some objects can catch fire or explode when placed close to heater. Keep all flammable objects, liquids and vapors the required clearances to combustibles away from heater.

Refer to installation manual for clearances and proper installation.

ATTENTION

Electrical Shock Hazard

Disconnect electrical power before servicing.

This appliance must be grounded.

Explosion Hazard

Connect fuel supply according to installation manual.

Improper installation can cause fuel leak.

Failure to follow these instructions can result in death, injury or property damage.

Le non-respect de ces instructions peut entraÎner de la mort,

des blessures ou des dégâts matériels.

Risque d'Incendie Certains objets peuvent s'enflammer ou s'exploser quand ils se trouvent près de l'appareil de chauffage. Eloigner tout objet, liquide, ou vapeur inflammable de l'appareil de chauffage. Les distances minimales de dégagement par rapport aux matériaux combustibles doivent être impérativement respectées. Reférer au manuel d'installation pour les distances de dégagement et les instructions pour un installation correct.

Risque de Choc Electrique

Débrancher le courant électrique avant toute intervention.

Cet appareil doit être mis à la terre.

Risque d'Explosion

Le service de gaz doit être connecté selon le manuel d'installation.

Un installation incorrect peut causer une fuite de gaz.

Lighting and Operation Instructions located on the other side of this panel. Les instructions d'allumage et d'operation sont situées à l'autre côté de ce panneau.

P/N 91010433

www.rg-inc.com

Printed in U.S.A. / Imprimé aux Etats Unis

Logo Label

Vent Length Label

WARNING

This heater must be installed in accordance with the manufacturer's instructions and local codes. In the absence of local codes, follow the National Fuel Gas Code, ANSI Z223.1 / NFPA 54 or the CAN/CSAB149 installation code.

Cet aérotherme doit être installé en accord avec les instructions du fabricant et les régulations locaux. S'il n'y a pas des régulations locaux, l'installation doit être en accord avec le Code National de Gaz de Carburant, ANSI Z223.1 / NFPA 54 ou le Code d'Installation, CAN/CSA-B149.

P/N 91010431 Rev Bwww.rg-inc.com

Printed in U.S.A. / Imprimé aux Etats Unis

Installation, modification, réglage ou maintenance incorrectes peuvent provoquer de la mort, des blessures ou des dégâts matériels. Liser attentivement le manuel d'installation, d'operations et d'entretien avant l'installation ou l'entretien de cet équipment.

A. This appliance does not have a pilot. It is equipped with an ignition device which automatically lights the

burner. Do not try to light the burner by hand.

B. BEFORE OPERATING smell all around the appliance area for gas. Be sure to smell next to the ﬂoor because

some gas is heavier than air and will settle on the ﬂoor.

WHAT TO DO IF YOU SMELL GAS:

• Do not try to light any appliance. • Do not touch any electric switch; do not use any phone in your building.

• Immediately call your gas supplie

r from a neighbor's phone. Follow the gas supplier's instructions.

• If you cannot reach your gas supplier, call the ﬁre department.

C. Use only your hand to push in or turn the gas control knob. Never use tools. If the knob will not push in or

turn by hand, don't try to repair it, call a qualiﬁed service technician. Force or attempted repai

r may result in a

ﬁre or explosion.

D. Do not use this appliance if any part has been under water. Immediately call a qualiﬁed service technician to

inspect the appliance and to replace any part of the control system and any gas control which has been under water.

OPERATING INSTRUCTIONS

1. STOP! Read the safety information above on this label.

2. Set the thermostat to the lowest setting.

3. Turn off all electric power to the appliance.

4. This appliance is equipped with an ignition device. Do not try to light the burner by hand.

5. Remove control access panel.

6. Push in gas control knob slightly and turn clockwise to "OFF". NOTE: Knob cannot be turned to "OFF" unless it is pushed in slightly. Do not force.

7. Wait ﬁve (5) minutes to clear out any gas. Then smell for gas i

ncluding near the ﬂoor. if you smell gas, STOP! Follow "B" in the safety information above on this label. If you don't smell gas, go to the next step.

8. Turn gas control knob counterclockwise to "ON".

9. Replace control access panel.

10. Turn on all electric power to the appliance.

11. Set thermostat to desired setting.

12. If the appliance will not operate, follow the instructions "To Turn Off Gas to Appliance" below on this label and call your service techn

ician or

gas supplier.

TO TURN OFF GAS APPLIANCE

1. Set the thermostat to lowest setting.

2. Turn off all electric power to the appliance if service is to be performed.

3. Remove control access panel.

4. Push in gas control knob slightly and turn clockwise to "OFF".

Do not force.

5. Replace control access panel.

½PSI IN

OFF

A. Cet appareil ne comporte pas de veilleuse. Il est muni d'un dispositif d'allumage qui allume automatiquement

le brûleur. Ne tentez pas d'allumer le brûler manuellement.

B. AVANT DE FAIRE FONCTIONNER, reniﬂez tout autour de l'appareil pour déceler une odeur de gaz.

Reniﬂez près du plancher, car certains gaz sont plus lourds que l'air et peuvent s'accumuler

au niveau du sol.

QUE FAIRE SI VOUS SENTEZ UNE ODEUR DE GAZ:

• Ne pas tenter d'allumer d'appareil.

• Ne touchez à aucun interrupteur; ne pas vous servir des téléphones se trouvant dans le bâitment.

• Appelez immédiatement votre fournisseur de gaz depuis un voisin. Suivez les instructions de fournisseur.

• Si vous ne pouvez pas rejoindre le fournisseur, appelez le ser

vice des incendies.

C. Poussez ou tournez la manette d'admission du gaz qu'à la main; ne jamais utiliser d'outil. Si la manette reste

coincée, ne pas tenter de la réparer; appelez un technicien qualiﬁé. Le fait de forcer la manette ou de la réparer peut déclencher une explosion ou un incendie.

D. N'utilisez pas cet appareil s'il a été plongé dans l'ea

u, même partiellement. Faites inspecter l'appareil par un

technicien qualiﬁé et remplacez toute commande qui ont été plongés dans l'eau.

INSTRUCTIONS DE MISE EN MARCHE

1. ARRÊTEZ! Lisez les instructions de sécurité sur la portion supérieure de cette étiquette.

2. Appareil pourvu d'un thermostat réglable ou destiné à être utilisé avec un tel dispositif: Réglez le thermostat à la température la plus basse.

3. Appareil à alimentation électrique externe: Coupez l'alimentation électrique de l'appareil.

4. Fournir des instructions qui indiquent de ne pas te

nter d'allumer la veilleuse de façon manuelle.

5. Si des panneaux ou des pièces de l'appareil doivent être retirés pour atteindre la commande d'admission du gaz, des instructions doivent indiquer la marche à suivre.

6. Des instructions, et une illustration, doivent être fournies pour la fermeture complète (position OFF) du robinet de l'admissio

n du

gaz. Lorsqu'une rotation est requise, les mots et symboles suivants doivent être utilisés pour indiquer le sens de la rotation.

sens horaire sens antihoraire

7. Attendre cinq (5) minutes pour laisser échapper tout le gaz. Reniﬂez tout autour de l'appareil, y compris près du plancher, pour déceler

une ode

ur de gaz. Si vous sentez une odeur de gaz, ARRÊTEZ! Passez à l'étape B des

instructions de sécurité sur la portion supérieure de cette étiquette. S'il n'y a pas d'odeur de gaz, passez à l'étape suivante.

8. Fournir des instructions pour l'ouverture (position ON) du robinet manuel de l'admission de gaz.

9. Le cas échéant, fournir des instructions sur la réinstallation des panneau

x ou pièces d'accès à la

commande d'admission de gaz.

10. Le cas échéant: Mettez l'appareil sous tension.

11. Le cas échéant: Réglez le thermostat à la température désirée.

12. Fournir des instructions donnant les mesures à prendre si l'appareil ne fonctionne pas même si les instructions ci-dessus ont été respectées ainsi que l'énoncé suivant: Si l'appareil ne se met pas en marche, suivez les inst

ructions intitulées "Comment couper l'admission de gaz de l'appareil" et appelez un technicien qualiﬁé ou le fournisseur de gaz. Le fabricant peut spéciﬁer un intervalle plus long.

COMMENT COUPER L'ADMISSION DE GAZ DE L'APPAREIL

1. Le cas échéant: Réglez le thermostat à la température la plus basse.

2. Le cas échéant: Coupez l'alimentation électrique de l'appareil s'il faut procéder à l'entretien.

3. Le cas échéant, fournir des instructions sur la méthode à suivre pour atteindre la commande d'admission du gaz.

4. Fournir des instructions pour la fermeture complète (position OFF) du robinet manuel de l'admission du

gaz.

5. Le cas échéant, fournir des instructions sur la réinstallation des panneaux d'accès à la commande d'admission de gaz.

For Models 30/45 / Pour Modèles 30/45

For Models 60 - 400 / Pour Modèles 60 - 400

OFF

Gas valve shown in "OFF" position.

Le robinet de l'admission du gaz est en la position OFF.

WARNING

Explosion Hazard Read instructions completely before operating heater. Failure to follow these instructions can result in death, fire, explosion, injury or property damage.

Printed in the U.S.A/Imprimé aux Etats-Unis. P/N 91010425

www.rg-inc.com

ATTENTION

FOR YOUR SAFETY, READ BEFORE OPERATING

Risque d'Explosion

Liser ces instructions complètement avant l'opération de l'aerotherme.

Le non-respect de ces instructions peut entraîner du feu, de l'explosion, du mort, des blessures ou des dommages.

Pour votre sécurité, liser ces instructions avant l'opération de cet appareil.

WARNING

Printed in the U.S.A./Imprimé aux Etats-Unis P/N 91010429

www.rg-inc.com

Fire Hazard

Some objects can catch fire or explode when placed close to heater.

Keep all flammable objects, liquids and vapors the required clearances to combustibles away from heater.

Refer to installation manual for clearances and proper installation.

ATTENTION

Electrical Shock Hazard

Disconnect electrical power before servicing.

This appliance must be grounded.

Explosion Hazard

Connect fuel supply according to installation manual.

Improper installation can cause fuel leak.

Failure to follow these instructions can result in death, injury or property damage.

Le non-respect de ces instructions peut entraÎner de la mort,

des blessures ou des dégâts matériels.

Risque d'Incendie

Certains objets peuvent s'enflammer ou s'exploser quand ils se trouvent près de l'appareil de chauffage.

Eloigner tout objet, liquide, ou vapeur inflammable de l'appareil de chauffage. Les distances minimales de dégagement par rapport aux matériaux combustibles doivent être impérativement respectées.

Reférer au manuel d'installation pour les distances de dégagement et les instructions pour un installation correct.

Risque de Choc Electrique

Débrancher le courant électrique avant toute intervention.

Cet appareil doit être mis à la terre.

Risque d'Explosion

Le service de gaz doit être connecté selon le manuel d'installation.

Un installation incorrect peut causer une fuite de gaz.

Warning Label

Lighting Instructions Label

Lighting and Operation Instructions located on the other side of this panel. Les instructions d'allumage et d'operation sont situées à l'autre côté de ce panneau.

P/N 91010433

www.rg-inc.com

Printed in U.S.A. / Imprimé aux Etats Unis

Instruction Location Label

FRONT VIEW

BACK VIEW

ACCESS SIDE VIEW (OUTSIDE)

ACCESS SIDE VIEW (INSIDE)

Combat

WARNING

P/N 91010430

Cut Hazard Turn off electrical supply before maintenance. Fan can start automatically. Failure to follow these instructions can result in serious injury or property damage.

ATTENTION

Risque de Coupure Couper l'alimentation électrique avant l'entretien. Le ventilateur peut démarrer automatiquement à tout moment. Le non-respect de ces instructions peut entraîner desblessures graves ou des dommages.

Printed in U.S.A. / Imprimé aux Etats Unis

WARM AIR MODELS / Chauffages à l'air chaud Maximum Minimum

Models 30-75 Vent Combustion / Air Duct Length 25' (7.6 m) 3' (1 m) Longeur totale de l'évacuation de gaz ou l'alimentation en air pour les modèles 30 - 75 Models 100-400 Vent Combustion / Air Duct Length 40' (12.2 m) 3' (1 m) Longeur totale de l'évacuation de gaz ou l'alimentation en air pour les modèles 100 - 400

If using vent lengths greater than 5' (1.5 m), condensation will form in the vent pipe. Insulate the pipe to reduce formation of condensate. For Category IV appliances, condensate tee and drain must be used. L’emploi d’une

évacuation de gaz de plus de 5' (1.5 m) provoquera la formation de condensation dans le tuyau d’évacuation de gaz. Isolez le tuyau pour réduire la formation de condensation. Pour les appareils en catégorie IV, un pièce en T pour la condensation et un tuyau d'écoulement doivent être utilisés

SEE INSTALLATION MANUAL FOR PARTS LIST, METHOD OF INSTALLATION AND FURTHER VENTING DETAILS.

VOIR LE MANUEL D’INSTALLATION POUR PLUS DE RENSEIGNEMENTS.

WARNING ATTENTION

VENT HEATER TO OUTDOORS / ECHAPPEMENT DU BRULEUR A L'EXTERIEUR

VENT LENGTH RE QUIR EME NT / Exigence du Longeur de l'évacuation de Gaz

P/N 91039505

Printed in U.S.A./Imprimé aux États-Unis

www.rg-inc.com

Carbon Monoxide Hazard

This appliance requires a special venting system.

Heaters must be installed according to the installation manual.

Failure to follow these instructions can result in death or injury.

Risque d'Oxyde de Carbone

Cet appareil doit avoir un échappement spécial.

Les aérothermes doivent être installés selon le manuel d'installation.

Le non-respect de ces consignes peut entraîner de la mort ou des blessures.

Vent to Outdoors Label

WARM AIR MODELS / Chauffages à l'air chaud Maximum Minimum

SEE INSTALLATION MANUAL FOR PARTS LIST, METHOD OF INSTALLATION AND FURTHER VENTING DETAILS.

VOIR LE MANUEL D’INSTALLATION POUR PLUS DE RENSEIGNEMENTS.

WARNING ATTENTION

VENT HEATER TO OUTDOORS / ECHAPPEMENT DU BRULEUR A L'EXTERIEUR

VENT LE NGT H RE QUIR EMEN T / Exigence du Longeur de l'évacuation de Gaz

P/N 91039505

Printed in U.S.A./Imprimé aux États-Unis

www.rg-inc.com

Carbon Monoxide Hazard

This appliance requires a special venting system.

Heaters must be installed according to the installation manual.

Failure to follow these instructions can result in death or injury.

Risque d'Oxyde de Carbone

Cet appareil doit avoir un échappement spécial.

Les aérothermes doivent être installés selon le manuel d'installation.

Le non-respect de ces consignes peut entraîner de la mort ou des blessures.

WARNING

P/N 91010430

Cut Hazard

Turn off electrical supply before maintenance.

Fan can start automatically. Failure to follow these

instructions can result in serious injury or property damage.

ATTENTION

Risque de Coupure

Couper l'alimentation électrique avant l'entretien.

Le ventilateur peut démarrer automatiquement à tout moment.

Le non-respect de ces instructions peut entraîner des blessures graves ou des dommages.

Printed in U.S.A. / Imprimé aux Etats Unis

Cut Hazard Label

A. This appliance does not have a pilot. It is equipped with an ignition device which automatically lights the

burner. Do not try to light the burner by hand.

B. BEFORE OPERATING smell all around the appliance area for gas. Be sure to smell next to the ﬂoor because

some gas is heavier than air and will settle on the ﬂoor.

WHAT TO DO IF YOU SMELL GAS:

• Do not try to light any appliance. • Do not touch any electric switch; do not use any phone in your building.

• Immediately call your gas supplie

r from a neighbor's phone. Follow the gas supplier's instructions.

• If you cannot reach your gas supplier, call the ﬁre department.

C. Use only your hand to push in or turn the gas control knob. Never use tools. If the knob will not push in or

turn by hand, don't try to repair it, call a qualiﬁed service technician. Force or attempted repai

r may result in a

ﬁre or explosion.

D. Do not use this appliance if any part has been under water. Immediately call a qualiﬁed service technician to

inspect the appliance and to replace any part of the control system and any gas control which has been under water.

OPERATING INSTRUCTIONS

1. STOP! Read the safety information above on this label.

2. Set the thermostat to the lowest setting.

3. Turn off all electric power to the appliance.

4. This appliance is equipped with an ignition device. Do not try to light the burner by hand.

5. Remove control access panel.

6. Push in gas control knob slightly and turn clockwise to "OFF". NOTE: Knob cannot be turned to "OFF" unless it is pushed in slightly. Do not force.

7. Wait ﬁve (5) minutes to clear out any gas. Then smell for gas i

ncluding near the ﬂoor. if you smell gas, STOP! Follow "B" in the safety information above on this label. If you don't smell gas, go to the next step.

8. Turn gas control knob counterclockwise to "ON".

9. Replace control access panel.

10. Turn on all electric power to the appliance.

11. Set thermostat to desired setting.

12. If the appliance will not operate, follow the instructions "To Turn Off Gas to Appliance" below on this label and call your service techn

ician or

gas supplier.

TO TURN OFF GAS APPLIANCE

1. Set the thermostat to lowest setting.

2. Turn off all electric power to the appliance if service is to be performed.

3. Remove control access panel.

4. Push in gas control knob slightly and turn clockwise to "OFF".

Do not force.

5. Replace control access panel.

½PSI IN

OFF

A. Cet appareil ne comporte pas de veilleuse. Il est muni d'un dispositif d'allumage qui allume automatiquement

le brûleur. Ne tentez pas d'allumer le brûler manuellement.

B. AVANT DE FAIRE FONCTIONNER, reniﬂez tout autour de l'appareil pour déceler une odeur de gaz.

Reniﬂez près du plancher, car certains gaz sont plus lourds que l'air et peuvent s'accumuler

au niveau du sol.

QUE FAIRE SI VOUS SENTEZ UNE ODEUR DE GAZ:

• Ne pas tenter d'allumer d'appareil.

• Ne touchez à aucun interrupteur; ne pas vous servir des téléphones se trouvant dans le bâitment.

• Appelez immédiatement votre fournisseur de gaz depuis un voisin. Suivez les instructions de fournisseur.

• Si vous ne pouvez pas rejoindre le fournisseur, appelez le ser

vice des incendies.

C. Poussez ou tournez la manette d'admission du gaz qu'à la main; ne jamais utiliser d'outil. Si la manette reste

coincée, ne pas tenter de la réparer; appelez un technicien qualiﬁé. Le fait de forcer la manette ou de la réparer peut déclencher une explosion ou un incendie.

D. N'utilisez pas cet appareil s'il a été plongé dans l'ea

u, même partiellement. Faites inspecter l'appareil par un

technicien qualiﬁé et remplacez toute commande qui ont été plongés dans l'eau.

INSTRUCTIONS DE MISE EN MARCHE

1. ARRÊTEZ! Lisez les instructions de sécurité sur la portion supérieure de cette étiquette.

2. Appareil pourvu d'un thermostat réglable ou destiné à être utilisé avec un tel dispositif: Réglez le thermostat à la température la plus basse.

3. Appareil à alimentation électrique externe: Coupez l'alimentation électrique de l'appareil.

4. Fournir des instructions qui indiquent de ne pas te

nter d'allumer la veilleuse de façon manuelle.

5. Si des panneaux ou des pièces de l'appareil doivent être retirés pour atteindre la commande d'admission du gaz, des instructions doivent indiquer la marche à suivre.

6. Des instructions, et une illustration, doivent être fournies pour la fermeture complète (position OFF) du robinet de l'admissio

n du

gaz. Lorsqu'une rotation est requise, les mots et symboles suivants doivent être utilisés pour indiquer le sens de la rotation.

sens horaire sens antihoraire

7. Attendre cinq (5) minutes pour laisser échapper tout le gaz. Reniﬂez tout autour de l'appareil, y compris près du plancher, pour déceler

une ode

ur de gaz. Si vous sentez une odeur de gaz, ARRÊTEZ! Passez à l'étape B des

instructions de sécurité sur la portion supérieure de cette étiquette. S'il n'y a pas d'odeur de gaz, passez à l'étape suivante.

8. Fournir des instructions pour l'ouverture (position ON) du robinet manuel de l'admission de gaz.

9. Le cas échéant, fournir des instructions sur la réinstallation des panneau

x ou pièces d'accès à la

commande d'admission de gaz.

10. Le cas échéant: Mettez l'appareil sous tension.

11. Le cas échéant: Réglez le thermostat à la température désirée.

ructions intitulées "Comment couper l'admission de gaz de l'appareil" et appelez un technicien qualiﬁé ou le fournisseur de gaz. Le fabricant peut spéciﬁer un intervalle plus long.

COMMENT COUPER L'ADMISSION DE GAZ DE L'APPAREIL

1. Le cas échéant: Réglez le thermostat à la température la plus basse.

2. Le cas échéant: Coupez l'alimentation électrique de l'appareil s'il faut procéder à l'entretien.

3. Le cas échéant, fournir des instructions sur la méthode à suivre pour atteindre la commande d'admission du gaz.

4. Fournir des instructions pour la fermeture complète (position OFF) du robinet manuel de l'admission du

gaz.

5. Le cas échéant, fournir des instructions sur la réinstallation des panneaux d'accès à la commande d'admission de gaz.

For Models 30/45 / Pour Modèles 30/45

For Models 60 - 400 / Pour Modèles 60 - 400

OFF

Gas valve shown in "OFF" position.

Le robinet de l'admission du gaz est en la position OFF.

WARNING

Explosion Hazard Read instructions completely before operating heater. Failure to follow these instructions can result in death, fire, explosion, injury or property damage.

Printed in the U.S.A/Imprimé aux Etats-Unis. P/N 91010425

www.rg-inc.com

ATTENTION

FOR YOUR SAFETY, READ BEFORE OPERATING

Risque d'Explosion Liser ces instructions complètement avant l'opération de l'aerotherme. Le non-respect de ces instructions peut entraîner du feu, de l'explosion, du mort, des blessures ou des dommages.

Pour votre sécurité, liser ces instructions avant l'opération de cet appareil.

Arrangement pour Ventilation: Pour les aérothermes à combustion séparée, la conduite de fumée et la prise d'air doivent être situées dans la même zone de pression. On peut utiliser le système, concentrique optionel. Voir le manuel d'installation, de fonctionnement et d'entretien pour les détails et les références de pièce. Ventiler l'aérotherme au t

ravers d'un mur ou d'un toit

avec une épaisseur minimum de 0" et une épaisseur maximum de 18".

*Venting Arrangement Label

Venting Arrangement: For separated combustion units, vent terminal and outside air intake must be located in the same pressure zone. Optional concentric vent kits may be used. See Installation, Operation and Service Manual for details and part numbers. Vent heater through wall/roof of minimum thickness 0", maximum thickness 18". Arrangement pour Ventilation: Pour les aérothermes à combustion séparée, la conduite de fumée et la prise d'air doivent être situées dans la même zone de pression. On peut utiliser le système, concentrique optionel. Voir le manuel d'installation, de fonctionnement et d'entretien pour les détails et les références de pièce. Ventiler l'aérotherme au t

ravers d'un mur ou d'un toit

avec une épaisseur minimum de 0" et une épaisseur maximum de 18".

Rating Plate Label

WARNING

P/N 91010431 Rev Bwww.rg-inc.com

Printed in U.S.A. / Imprimé aux Etats Unis

Proposition 65 Label

Installation Label

Description Part Number

* For separated combustion units only

VENT TO OUTDOORS DONNER VENT A DEHORS

Printed in U.S.A. / Imprimé aux Etats Unis

SECTION 1: HEATER SAFETY

P/N 91010427

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Page 12

UHD LOW PROFILE DUCT FURNACE INSTALLATION OPERATION AND SERVICE MANUAL

SECTION 2: INSTALLER RESPONSIBILITY

The installer is responsible for the following:

2.2 Corrosive Chemicals

• To install the heater, as well as the gas and electrical supplies, in accordance with applicable specifications and codes. Roberts-Gordon LLC recommends the installer contact a Local Building Inspector or Fire Marshal for guidance.

• To use the information given in a layout drawing and in the manual together with the cited codes and regulations to perform the installation.

• To install the heater in accordance with the clearances to combustibles.

• To furnish all needed materials not furnished as standard equipment.

Do not use heater in area containing corrosive chemicals.

Refer to appropriate Material Safety Data Sheets (MSDS).

CAUTION

Product Damage Hazard

• To plan location of supports, vents and air intakes.

• To provide access for servicing.

• To provide the owner with a copy of this Installation, Operation and Service Manual.

• To never use heater as support for a ladder or other access equipment and never hang or suspend anything from heater.

• To ensure there is adequate air circulation around the heater and to supply air for combustion, ventilation and distribution in accordance with local codes.

• To provide a method that ensures that the air flow through the heat exchanger is

within the acceptable range indicated on the rating plate prior to energizing the heater, and that such air flow continues at least 90 seconds after the heater is de-energized.

• To ensure the heater is placed in an approved application.

2.1 Wall Tag

A laminated wall tag is included with the heater as a permanent reminder of the safety instructions and the importance of the required clearances to combustibles. Affix the tag by peeling off the backing of the adhesive strips on the rear surface and position the tag on a wall near the heater.

A copy of the wall tag (P/N 91039831) is illustrated on the back cover.

Know your model number. Model number is found on the heater and throughout the Installation, Operation and Service Manual.

Failure to follow these instructions can result in product damage.

Roberts-Gordon LLC cannot be responsible for ensuring that all appropriate safety measures are undertaken prior to installation; this is entirely the responsibility of the installer. It is essential that the contractor, the sub-contractor, or the owner identifies the presence of combustible materials, corrosive chemicals or halogenated hydrocarbons* anywhere in the premises.

* Halogenated Hydrocarbons are a family of chemical compounds characterized by the presence of halogen elements (fluorine, chlorine, bromine, etc.). These compounds are frequently used in refrigerants, cleaning agents, solvents, etc. If these compounds enter the air supply of the burner, the life span of the heater compo- nents will be greatly reduced. An outside air supply must be provided to the burners whenever the presence of these compounds is suspected. Warranty will be invalid if the heater is exposed to halogenated hydrocarbons.

2.3 National Standards and Applicable Codes

All appliances must be installed in accordance with the latest revision of the applicable standards and national codes. This refers also to the electric, gas and venting installation. Note: Additional standards for installations in public garages, aircraft hangars, etc. may be applicable.

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SECTION 3: CRITICAL CONSIDERATIONS

3.1 Basic Information

UHD[X][S] heaters have automatic ignition burners for ON/OFF operation only.

SECTION 3: CRITICAL CONSIDERATIONS

•Must be installed in a manner which allows access to all serviceable components. See Page 6, Figure 3 for details.

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. Design and heat exchanger alternatives shall be offered as follows:

• Separated Combustion: A separated combustion unit shall feature an enclosed, sealed burner box. A piece of flexible air duct connects this burner box to a flange on the cabinet. Combustion air should be ducted from outside the heated space, with the ductwork connecting to the unit with the use of the flange.

• Stainless Steel Heat Exchanger: A stainless steel heat exchanger unit shall consist of heat exchanger tubes, heat exchanger tube supports, heat exchanger tube plates and vent box produced of 409 stainless steel. The use of stainless steel heat exchanger is

recommended when air inlet temperatures are below 40° F (4.4° C) or temperature rise is less than 40° F (22.2° C) as condensation may form on the heat exchanger resulting in corrosion that may shorten its life.

3.4 Minimum Required Installation Clearances

Clearances around the heater and vent must be as indicated on Page 6, Figure 3

and Page 14, Figure 8 to ensure access for servicing, and correct operation.

3.5 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. See Page 12, Section 7.

3.6 Gas Supply

It is important that the gas supply pipe is sized correctly to provide the inlet pressure as stated on the heater data plate. The gas supply pipe and electrical connections must not support any of the heater's weight. See Page 20, Section 9.

3.7 Electrical Supply

A permanent 120 V /1 Ø/60 Hz electrical supply is required for the main electrical power. The heater also requires suitable controls in accordance with Page 22, Section 10.

3.3 Location and Suspension

All models:

•Must be installed indoors.

•Must be installed on the positive pressure side of the air circulation blower.

•Must be installed in a level position with horizontal discharge.

• May be mounted on a shelf of non-combustible material using shelf mounting brackets.(See Page 11, Figure 6 and Page 11, Figure 7 for details.)

• Drop rods must be a minimum of 3/8" diameter mild steel. Four suspension points (3/8" nuts) are located on top of the heater.

• May be suspended from above (See Page 10, Figure 5) or from wall brackets of sufficient strength to support the heater as listed in the Technical Data Table on Page 45, Section 16.2.

3.8 Vent

Choose heater orientation to allow for proper location of the vent. Each heater must be fitted with a correctly sized sealed vent system.

If vented horizontally, no other appliance may be connected to the vent. See Page 12, Section 7.

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UHD LOW PROFILE DUCT FURNACE INSTALLATION OPERATION AND SERVICE MANUAL

WARNING

Fire Hazard

Keep all flammable objects, liquids and vapors the minimum required clearances to combustibles away from heater.

Some objects will catch fire or explode when placed close to heater.

Failure to follow these instructions can result in death, injury or property damage.

Clearance to Vent: 2" (5 cm)

*18" (46 cm) minimum is necessary for servicing.

SECTION 4: CLEARANCES TO COMBUSTIBLES

4.1 Required Clearances to Combustibles

Clearances are the required distances that combustible objects must be away from the heater to prevent fire hazard. Combustible material that may catch fire include common items such as wood, paper, rubber, fabric, etc. Maintain clearances to combustibles at all times for safety. Clearances for all heater models are located on the serial plate of the heater and throughout the manual. Check the clearances on the serial plate to make sure the product is suitable for your application and the clearances are maintained. Read and follow the safety guidelines below:

• Keep gasoline or other combustible material including flammable objects, liquids, dust or vapors away from this heater or any other appliance.

• The stated clearances to combustibles represents a surface temperature of 90° F (50° C) above room temperature. Building materials with a low heat tolerance (such as plastics, vinyl siding, canvas, tri-ply, etc.) may be subject to degradation at lower temperatures. It is the installer's and owner's responsibility to assure that adjacent materials are protected from degradation.

•Consult local Fire Marshall, Fire Insurance Carrier or other authorities for approval of proposed installation when there is a possibility of exposure to combustible airborne materials or vapors.

4.2 Clearances to Combustibles

Clearances must be as indicated on Page 6, Figure

3. If clearances to combustibles are not indicated,

then installation clearances apply.

Figure 3: Clearances to Combustibles

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Page 15

SECTION 5: NATIONAL STANDARDS AND APPLICABLE CODES

5.1 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.

Canada: Refer to CSA B149.1 Natural Gas and Propane Installation Code.

5.2 Aircraft Hangars

Installation in aircraft hangars must be in accordance with the following codes:

United States: Refer to Standard for Aircraft Hangars, NFPA 409 - latest revision.

Canada: Refer to Standard CSA B149.1 Natural Gas and Propane Installation Code.

• In aircraft storage and servicing areas, heaters shall be installed at least 10' (3 m) above the upper surface of wings or of engine enclosures of the highest aircraft which may be housed in the hangar. The measurement shall be made from the wing or engine enclosure (whichever is higher from the floor) to the bottom of the heater.

• In shops, offices and other sections of aircraft hangars communicating with aircraft storage or servicing areas, heaters shall be installed not less than 8' (2.4 m) above the floor.

• Suspended or elevated heaters shall be so located in all spaces of aircraft hangars that they shall not be subject to injury by aircraft, cranes, movable scaffolding or other objects. Provisions shall be made to assure accessibility to suspended heaters for recurrent maintenance purposes.

5.3 Parking Structures and Repair Garages

Installation in garages must be in accordance with the following codes:

United States: Standard for Parking Structures NFPA 88A - latest revision or the Code for Motor Fuel Dispensing Facilities and Repair Garages, NFPA 30A - latest revision. Canada: Refer to CSA B149.1 Natural Gas and Propane Installation Code.

• In accordance with the Standard for Parking Structures NFPA 88A, heaters must be located a minimum of 18" (50 cm) below the floor-ceiling assembly or 18" (50 cm) above the floor.

• In accordance with the Code for Motor Fuel Dispensing Facilities and Repair Garages, NFPA 30A - latest revision, heaters must not be installed less than 8' (2.4 m) above the floor.

5.4 Electrical

The heater must be electrically grounded in accordance with the following codes:

United States: Refer to National Electrical

Code

, NFPA 70 - latest revision. Wiring must

conform to the most current National Electrical

, local ordinances and any special

Code diagrams furnished.

Canada: Refer to Canadian Electrical Code, CSA C22.1 Part 1 - latest revision.

5.5 Venting

The venting must be installed in accordance with the requirements within this manual and

the following codes:

United States: Refer to NFPA 54/ANSI Z223.1 latest revision, National Fuel Gas Code.

Canada: Refer to CSA B149.1 Natural Gas and Propane Installation Code.

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UHD LOW PROFILE DUCT FURNACE INSTALLATION OPERATION AND SERVICE MANUAL

5.6 High Altitude

These heaters are approved (without modifications) for installations up to 2000' (610 m) in US and Canada. 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. For installations from 2000' (610 m) to 4500' (1370m) in Canada, high altitude conversion kits are available. Heaters installed over 4500' (1370 m) in Canada are not approved and must be approved by the local or provincial authority.

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SECTION 6: DUCT HEATER INSTALLATION

6.1 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 made using the Duct-Mate clips. The ducts must have removable access panels upstream and downstream of the heater. These panels must be of appropriate size and placement so that smoke or reflected light could be observed to indicate the presence of leaks in the heat exchanger. Covers for these openings should be sealed to prevent leakage.

Any transition into the inlet of the heater should be smooth, with a taper of no more than 15 degrees. If elbows are required, they should be of either broad radius or fitted with properly designed air turns. Consult a professional to ensure air turns are properly designed.

The heater must be installed on the positive pressure side of the circulating air blower. Air flow through the heater must be as shown on Page 9, Figure 4 and may not be reversed. The air flo

w must be adjusted such that it is within the acceptable range shown on Page 9, Section 6.1.3. The

minimum inlet duct lengths shown on Page 9, Section 6.1.1 should be observed. Pressure drop through the heat exchanger at various air flows is given on Page 9, Section 6.1.2.

Figure 4: Air Flow Direction

OUTLET DUCT

AIR FLOW

INLET DUCT

6.1.1 Minimum Inlet Duct Length

Model Duct Length Duct Size (W X H)

UHD[X][S] 75 32" (81 cm) 16 3/4" x 15 7/8" (43 cm x 40 cm) UHD[X][S] 100 &125 37" (94 cm) 21 3/4" x 15 7/8" (55 cm x 40 cm)

6.1.2 Temperature Rise and Pressure Drop Ranges

UHD[X][S] 75 UHD[X][S] 100 UHD[X][S] 125

Airflow

(CFM)

850 68 0.06 950 78 0.05 1,020 92 0.06 1,200 48 0.10 1,500 50 0.18 1,650 57 0.14 1,625 36 0.16 2,500 31 0.28 2,340 41 0.27 1,965 30 0.22 3,000 26 0.39 3,480 28 0.56 2,450 24 0.31 3,300 24 0.46 4,240 23 0.80 2,650 22 0.36 3,660 22 0.55 4,750 20 0.98

Temperature

Rise (°F)

Pressure Drop

(in wc)

Airflow

(CFM)

Temperature

Rise (°F)

Pressure Drop

(in wc)

Airflow

(CFM)

Temperature

Rise (°F)

Pressure Drop

(in wc)

6.1.3 Air Flow and Temperature Rise Ranges

Model Rate Air Flow Temperature Rise

UHD[X][S] 75 75,000 850 2,650 22 68 UHD[X][S] 100 100,000 950 3,660 22 78 UHD[X][S] 125 125,000 1,020 4,750 20 92

(Btu/h) Minimum (CFM) Maximum (CFM) Minimum (°F) Maximum (°F)

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UHD LOW PROFILE DUCT FURNACE INSTALLATION OPERATION AND SERVICE MANUAL

WARNING

Crush Hazard

Use 3/8" threaded rod minimum.

Failure to follow these instructions can result in death, injury or property damage.

6.2 Shelf Mounting and Suspension

Four suspension points (3/8" nuts) are located on the top of the heater. Drop rods must be 3/8" diameter mild steel minimum.

When handling or supporting the heater from below, ensure that the weight is taken at the support points. For typical suspension, See Page 10, Figure 5. For typical shelf mounting on existing shelf, See Page 11, Figure 6.

The gas or electrical supply lines must not be used to support the heater.

Do not locate the gas or electrical supply lines directly over the path of the flue products from the heater.

The heater must be installed in a location that is readily accessible for servicing.

The heater must be installed in accordance with clearances to combustibles as indicated on the wall tag and in this manual.

6.3 Wall Mounting

For typical suspension, See Page 11, Figure 7. Wall mounted heaters blowing parallel to the wall can only be installed with the service door away from the wall.

The wall mou suitable wall using all mounting holes. Screw sizes less than 3/8" may not be used. In order for the wall mounting brackets to adequately carry the weight of the heater, it must be installed according to best building practices.

nting brackets must be attached to a

Figure 5: Suspension Methods

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Page 19

Figure 6: Shelf-Mounting Methods

Shelf Mounting

Brackets

Description Part Number Qty. Shelf Mounting Bracket Kit 12011000K

Shelf Mounting Bracket 11111510 2 Screw #10 x 1/2" Type AB Phil HWH Z

94311008 2

Existing cabinet screws must be re-used.

Shelf Mounting Brackets (Fasten to Wall Mounting Bracket)

5/16" x 3 1/2" Bolt 5/16" Flat Washer 5/16" Locknut with Nylon Insert Torque to 40 in lb (4.5 Nm).

Wall Shelf Mounting

Wall Mounting

Bracket Arm (Right & Left)

Wall Suspension Mounting

Wall Mounting Bracket Vertical

Wall Mounting

Bracket Diagonal

3/8" Fasteners

Description Part Number Qty. Wall Shelf Mounting Bracket Kit 12011002K

Wall Suspension Mounting Bracket Kit 12011001K 1 Shelf Mounting Bracket Kit 12011000K 1

Description Part Number Qty. Wall Suspension Mounting Bracket Kit 12011001K

Wall Mou nting Bracket Arm Left 111WALL1L 1 Wall Mou nting Bracket Arm Right 111WALL1R 1 Wall Mou nting Bracket Vertical 111WALL2 2 Wall Mou nting Bracket Diagonal 111WALL3 2 5/16" x 3 1/2" Bolt 97213925 6 5/16" Lock Nut with Nylon Insert 92114000 6 5/16" Flat Washer 95211600 6 5/16" Lockwasher 96411600 6

Hardware provided to construct mounting bracket assembly only.

Figure 7: Wall Shelf Mounting and Suspension

SECTION 6: DUCT HEATER INSTALLATION

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UHD LOW PROFILE DUCT FURNACE INSTALLATION OPERATION AND SERVICE MANUAL

WARNING

Carbon Monoxide Hazard

Heaters may be installed vented or unvented.

Vented heaters must be vented outdoors.

Unvented heaters must be installed according to the installation manual.

Failure to follow these instructions can result in death or injury.

SECTION 7: VENTING

7.1 Changing Vent and Air Intake Orientation

The heater is sold with rear horizontal vent and air intake connections as standard. (Only separated combustion models have air intake connection). If vertical vent and air intake connections are required, follow the instructions on Page 42, Section 15.5.

sheet metal screws. For single wall venting, pressure sensitive aluminum

tape or silicone sealant must be used to seal all joints.

Aluminum tape shall have a minimum temperature rating of 400° F (204° C) and meet SMACNA AFTS100-73 standards. High temperature silicone sealant must have a minimum temperature rating of 480° F (250° C).

7.2.1 United States Requirements

Vent must terminate at least 3' (.9 m) above any forced air inlet located within 10' (3.1 m).

Vent must terminate at least 4' (1.2 m) below, 4' (1.2 m) horizontally from, or 1' (.3 m) above any door, operable window, or gravity air inlet into any building.

NFPA 54/ANSI Z223.1 - latest revision, National Fuel Gas Code specifies a 4' (1.2 m) horizontal vent terminal clearance from gas and electric meters, regulators and relief equipment.

7. 2 V e n t in g

This heater must be vented in accordance with the rules contained in this manual and with the following national codes and any state, provincial or local codes which may apply: United States: Refer to NFPA54/ANSI Z223.1 - latest revision, National Fuel Gas Code; Canada: Refer to CSA B149.1 Natural Gas and Propane Installation Code. Any portion of vent pipe passing through a combustible wall must have a listed thimble to conform with the above codes.

The heater may be installed unvented in certain circumstances according to building ventilation codes. Refer to the above codes and Page 13, Section 7.4 for further information. Unvented operation also requires compliance with the clearances to combustibles given on Page 6, Figure 3.

The bottom of the vent or air intake terminal shall not be located less than 1' (.3 m) above grade level.

The vent shall not terminate less than 7' (2.1 m) above grade where located adjacent to public walkways.

Vent ter m inal must be installed at a height sufficient to prevent blockage by snow and building materials protected from degradation by flue gasses.

Vent ter m inal must be beyond any combustible overhang.

Secure all joints with corrosion resistant #8 x 3/8"

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7.2.2 Canadian Req

The vent shall not terminate within 6' (1.8 m) of a mechanical air supply inlet to any building.

The vent shall not terminate within 3' (.9 m) of a window or door that can be opened in any building, any non-mechanical air supply inlet to any building, or of the combustion air inlet of any other appliance.

7.3 Vent Installation

Maintain clearances to combustibles at all times for safety. Clearances are the required distances that combustible objects must be away from the heater to prevent serious fire hazard. See Page 6, Section

4. For vented units, the vent must terminate outside of the building. Vents must be fully sealed and correctly sized for the model. If the vent passes through a wall or ceiling of combustible material, it must be enclosed by a listed thimble and be separated from the thimble by at least a 2" (5 cm) air gap.

For separated combustion models, vents and air intakes must be a fully sealed system and correctly sized for the model. Vent should be assembled as detailed on Page 14, Figure 8 through Page 18, Figure 13. The joints between the vent terminal and the roof or wall must be properly sealed. If the vent passes through a wall or ceiling of comb material, it must be enclosed by a listed thimble and be separated from the thimble by at least a 2" (5 cm) air gap.

uirements

ustible

Page 21

SECTION 7: VENTING

WARNING

Carbon Monoxide Hazard

Heaters may be installed vented or unvented.

Vented heaters must be vented outdoors.

Unvented heaters must be installed according to the installation manual.

Failure to follow these instructions can result in death or injury.

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 14, Figure 8 through Page 18, Figure 13.

7.3.1 Standard Vented Heaters (Models UHD[X] 75 - 125)

The vent must be fitted with a low resistance terminal. See Page 14, Figure 8 through Page 16, Figure 10. Standard vented heaters do not allow outdoor air intake for combustion air.

7.3.2 Separated Combustion Heaters (Models UHD[X]S 75 - 125)

The heaters are designed to be installed as separated combustion heaters. The vent and air intake are run as separate pipes to the wall or roof terminals. See Page 17, Figure 11. As an option, the vent and air intake are run as separate pipes to a concentric vent box and a concentric vent/air intake pipe penetrates the wall or roof. See Page 17, Figure 12 and Page 18, Figure 13.

For separated combustion installation, the vent and air intake must be fitted with an individual and correctly sized sealed system and the vent and air intake must terminate at approved wall and roof terminals.

Separated combustion units may not be common vented. See Page 12, Section 7.

7.4 Unvented Operation

This heater is not approved to be installed in residential buildings.

For unvented operation in commercial installations, sufficient building ventilation must be provided in the amount of 4 cfm per 1000 Btu/h firing rate (United

States); 3 cfm per 1000 Btu/h firing rate (Canada).

7.5 Horizontal Venting

Horizontally vented heaters must be individually vented.

Vent pipe must be sloped ¼" (.6 cm) downward for every 1' (.3 m). For vent lengths greater than 5' (1.5 m), condensation will form. Insulation is recommended and condensation drains may be desired.

In noncombustible walls only, vent terminal (P/N 02537801-1P) may be used.

For 4'' (10 cm) vents in either combustible or noncombustible walls, use vent terminal (P/N

90502100) or equivalent insulated vent terminal. Follow the manufacturer's instructions for proper installation.

Instead of an insulated vent terminal, a listed thimble with 2" (5 cm) air gap may be used with a 4" (10 cm) vent cap (P/N 90502102).

7.6 Vertical Venting

Vertically-vented standard-vented heaters can be common vented (up to four heaters). For vent lengths greater than 5' (1.5 m), condensation will form. Insulation is recommended and condensation drains may be desired. Venting through the top of the heater cabinet is not recommended if vent lengths are longer than 10' (3 m). In this case, vent from the rear of the heater cabinet then run the vent vertically and use a condensate drain at the bottom of the vertical vent. Vent pipe must be sloped 1/4'' (.6 cm) for every 1' (.3 m).

For 4'' (10 cm), an approved vent cap (P/N 90502102) must be used.

For 6'' (15 cm) common vent, an approved vent cap (P/N 90502103) must be used.

For common vertical venting of more than two heaters, See Page 16, Figure 10.

A vent shall not extend less than 2' (.6 m) above the highest point where it passes through a flat roof of a building.

7. 7 L en gth Requirements

If using vent lengths greater than 5' (1.5 m), condensation will form in the vent pipe. Insulation 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).

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UHD LOW PROFILE DUCT FURNACE INSTALLATION OPERATION AND SERVICE MANUAL

7.7.1 Maximum Vent Lengths

Model UHD[X][S] 75, 100, 125 Number of Elbows

40 ft (12.2 m) 1 35 ft (10.7 m) 2

30 ft (9.1 m) 3

25 ft (7.6 m) 4

20 ft (6.1 m) 5

7. 8 Vent Material

Vent material may be single wall 26 ga. (minimum) galvanized steel or equal thickness stainless steel. Completely seal all joints, refer to Page 12, Section

7.3. If penetrating a combustible wall or roof, a listed thimble with 2" (5 cm) clearance must be used. Where local codes permit, a single section of type B-1 vent material may be used at the roof or wall penetration instead of a thimble. Ensure vent manufacturer's clearance from vent material is maintained. Seal annular space of the type B-1 vent as well as all joints in the remaining vent.

7.9 Replacing an Existing Heater in a Venting System

When replacing an existing heater in a venting system, the venting system may not be properly sized to vent the new heater. The following steps must be followed with each appliance connected to the venting system placed in operation, while any other appliances connected to the venting system are not in operation.

1. Seal any unused openings in the venting system.

2. Inspect the venting system for proper size and horizontal pitch, as required by the NFPA 54/ ANSI Z223.1 - latest revision, National Fuel Gas Code (US) or Standard CSA B149.1 Natural Gas and Propane Installation Code (Canada) and these instructions. Determine that there is no blockage or restriction, leakage, corrosion and other deficiencies which cou

cause an unsafe condition.

3. Close all building doors and windows and all doors between the space in which the appliance(s) connected to the venting system are located and other spaces of the building. Tu rn on clothes dryers and any exhaust fans, such as range hoods and bathroom exhausts so that they shall operate at maximum speed. Do not operate a summer exhaust fan. Close fireplace dampers.

4. Follow the lighting instructions. Place the appliance being inspected in operation.

Adjust thermostat so that the appliance will operate continuously.

5. For any appliance having a draft hood, test for draft hood appliance spillage at the draft hood relief opening after five minutes of main burner operation. Use the flame of a match or candle.

6. After it has been determined that each appliance connected to the venting system properly vents when tested as outlined above, return doors, windows, exhaust fans, fireplace dampers and any other gas-burning appliances to their previous conditions of use.

7. If improper venting is observed during any of the above tests, the venting system must be corrected by a contractor qualified in the installation and service of gas-fired equipment or you

r local gas supplier. If the venting must be resized, use appropriate tables in (US) Appendix G of NFPA 54/ANSI Z223.1 - latest revision, National Fuel Gas Code (US) or Standard CSA B149.1 Natural Gas and Propane Installation Code (Canada) to determine minimum size. All vent corrections must be in accordance with the appropriate local codes and the NFPA 54/ANSI Z223.1 latest revision, National Fuel Gas Code (US) or Standard CSA B149.1 Natural Gas and Propane Installation Code (Canada).

Figure 8: Vent and Roof Detail

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Page 23

Figure 9: Standard Vented Heater - Vertical and Horizontal Vent Termination

Model Vent Diameter Part Number

UHD[X] 75 - 125 4" (10 cm) 90502102

SECTION 7: VENTING

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UHD LOW PROFILE DUCT FURNACE INSTALLATION OPERATION AND SERVICE MANUAL

Figure 10: Standard Vented Heater - Common Vertical Vent Termination

Requirements:

•Maximum of four heaters can be commonly vented through the roof.

• Heaters must be of the same BTU output.

• Heaters must be controlled by a common thermostat.

• Connections to a common stack must be positioned to avoid direct opposition between streams of combustion gases.

16 of 47

Page 25

Figure 11: Separated Combustion Heater - Vertical and Horizontal Vent Termination

Model

Air Intake &

Vent Diameter

Part Number

UHD[X]S 75 - 125 4" (10 cm) 90502102

4" (10 cm) Single Wall Vent Pipe (By Others)

Seal joint between single wall and Type B vent with silicone sealant.

Use 3 sheetmetal screws equally spaced around joint.

Use 3 sheetmetal screws equally spaced around collar.

Concentric Vent Box

6" (15 cm) Single Wall Inlet Air Pipe (By Others)

One piece of 4" (10 cm) diameter, 1/4" (6 cm) airspace type

“B” vent. Selkirk Model RV or equivalent. (By others)

Combustion Air to Heater

Toward Outside

Exhaust from Heater

SECTION 7: VENTING

Figure 12: Concentric Vent Box

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Page 26

UHD LOW PROFILE DUCT FURNACE INSTALLATION OPERATION AND SERVICE MANUAL

Description Part Number Qty. Concentric Vent Kit UHVK1

Concentric Vent Box Top & Side Assembly 90504113 1 Concentric Vent Box Bottom Assembly 90504112 1 Screw #6 x 3/8 Self Drilling 91119100 14 4" (10 cm) Vent Terminal with Baffle Plate 90502102R 1 6" (15 cm) Combustion Air Terminal 90502103 1

Figure 13: Concentric Vertical and Horizontal Vent Termination - Separated Combustion Heater

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Page 27

SECTION 8: AIR SUPPLY

WARNING

Explosion Hazard

Equipment must have access to uncontaminated air at all times.

Failure to follow these instructions can result in death, injury or property damage.

8.1 Separated Combustion Installation

When installed as a separated combustion heater (UHD[X]S), the air for combustion is drawn in from outside the building.

SECTION 8: AIR SUPPLY

8.2 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.

8.3 Building Ventilation

Where ventilation is required, air must be taken from an outside point where it is not likely to be contaminated or obstructed.

8.4 Outside Combustion Air Supply

If outside combustion air supply is required, separated combustion model (UHD[X]S) heaters must be used.

Caution: If the building has a slight negative pressure or corrosive contaminants such as halogenated hydrocarbons are present in the air, an outside combustion air supply to the heater is required. Seal all combustion air pipe joints. The flexible air duct may have to be insulated to prevent condensation on the o outside air terminal must not be more than 1' (31 cm) above the vent terminal.

uter surface. The

8.4.1 Length Requirements

Follow the constraints listed on Page 13, Section 7.7.

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UHD LOW PROFILE DUCT FURNACE INSTALLATION OPERATION AND SERVICE MANUAL

Fire Hazard

Connect gas supply according to Figure 14.

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.

SECTION 9: GAS PIPING

WARNING

Explosion Hazard

Leak test all components of gas piping before operation.

Gas can leak if piping is not installed properly.

Do not high pressure test gas piping with heater connected.

Failure to follow these instructions can result in death, injury or property damage.

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 required.

Installation pipes must be fitted in accordance with local and national codes. Pipes of smaller size than the heater inlet gas connection should not be used.

Gas lines must meet applicable codes: United States: Flexible stainless steel gas hose

(US models) is certified per the standard for connectors for gas applications. ANSI Z21.21/CSA

6.10 – latest revision. Canada: Rubber type 1 gas hose (Canadian

models) is certified as being in compliance with the

20 of 47

standard for elastomeric compostite hose and hose couplings for conducting propane and natural gas, CAN/CGA 8.1 – latest revision.

9.1 Connections

Connect the heater to the gas supply ensuring that the final connections are as follows:

•Gas supply pipe work is run in medium or heavy gauge tubing in compliance with local and national codes.

• Meter and service must be large enough to handle all the burners being installed plus any other connected load. The gas pipe which feeds the system must be large enough to supply the req

uired gas with a maximum pressure drop of 1/2" wc. When gas piping is not included in the layout drawing, contact the local gas supplier.

• An isolating valve and union connection should be used and fitted into the supply adjacent to the heater.

•A minimum 1/8" NPT plugged tapping accessible for test connection must be installed immediately upstream of the gas supply connection to the heater.

•For suspended heaters, an approved metal flexible connection between the isolating valve and the heater may be used. To reduce

pressure loss, use one pipe size larger than the heater gas connection.

IMPORTANT - The complete installation must be

purged and tested for gas soundness in accordance with local and national codes.

Caution: Do not high pressure (in excess of 1/2 psi [14" wc]) test the gas piping with the burner connected. Close manual shut-off valve during any pressure testing equal to or less than 1/2 psi (14" wc).

Check the pipe and tubing ends for leaks before placin checking for gas leaks, use a soap and water solution; never use an open flame.

g heating equipment into service. When

Page 29

Figure 14: Gas Connection

• Hold gas nipple securely

with pipe wrench when

attaching the flexible gas connector.

•Do not twist flexible gas connector.

•Ensure all joints are gas tight.

• Do not bend flexible gas connector sharply.

CAUTION

Hold gas nipple securely with pip wrench when attaching flexible gass connector.

Failure to follow these instruction can relsut in prdouct damage

Product Damage Hazard

SECTION 9: GAS PIPING

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UHD LOW PROFILE DUCT FURNACE INSTALLATION OPERATION AND SERVICE MANUAL

DANGER

Electrical Shock Hazard

Disconnect electric before service.

More than one disconnect switch may be required to disconnect electric from equipment.

Equipment must be properly grounded.

Failure to follow these instructions can result in death or electrical shock.

Electrical

Supply

Terminal

Strip

R G W C

24 Volt Thermostat

Gas

Supply

SECTION 10: 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 heaters are equipped with thermostat connections suitable to power a 24 V thermostat.

Heater must be wired and electrically grounded in accordance with local codes. In the absence of local

codes in accordance with: United States: refer to National Electrical Code

NFPA 70 - latest revision; Canada: refer to Canadian Electrical Code CSA C22.1 Part I - latest revision.

10.2 Low Voltage Thermostat with One Heater

10.1 Positioning Thermostats

A room thermostat should be mounted on a vibration-free wall or column at a height of approximately 5' (1.5 m) from the floor to measure the ambient temperature. It should be clear of both cold drafts and the direct path of warm air from the heater. Avoid mounting thermostat on outside walls or in areas directly exposed to radiant heat or sunlight. Install wall tag in a visible location near thermostat. See Page 4, Section 2.1 for wall tag details.

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Page 31

10.3 UHD[X][S] Series 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 rating of at least 105° C (221° F) and 600 V. For supply connections, use No. 14 AWG or larger wires.

BLUE

BLACK

ORANGE

YELLOW

BROWN

WHITE

ORANGE

BLACK

GREEN

WHITE

BLUE

BLACK

GREEN

BLUE

GREEN

YELLOW

24 VAC

HOT

GROUND

FLAME

BLACK

SENSE

ELECTRODE

LIMIT SWITCH

PRESSURE SWITCH

GAS VALVE

IGNITION MODULE

TRANSFORMER

LIMIT SWITCH (UHD 300, 350, 400 ONLY)

MANUAL RESET LIMIT SWITCH (UHD 75 ONLY)

THERMOSTAT INPUT: FIELD SUPPLIED

R = 24 VAC TO THERMOSTAT (RED) G = MANUAL FAN INPUT FROM THERMOSTAT (GREEN)

W = HEAT DEMAND INPUT FROM THERMOSTAT (WHITE)

C = COMMON GROUND TO THERMOSTAT

FLUE

BLOWER

ACC

CMB BLOWER

SECTION 10: WIRING

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Page 32

UHD LOW PROFILE DUCT FURNACE INSTALLATION OPERATION AND SERVICE MANUAL

IMPORTANT:

FLAME

SENSOR

PRESSURE SWITCH

THERMOSTAT CONNECTION

120 VAC

TRANSFORMER

FLUE BLOWER

GAS

VALVE

ELECTRODE

IGNITION MODULE

FLAME

SPARK

LIMIT SWITCH

LIMIT SWITCH (UHD 300, 350, 400 ONLY)

MANUAL RESET LIMIT SWITCH (UHD 75 ONLY)

FLUE BLOWER

10.4 UHD[X][S] Series Ladder Wiring Diagram

24 of 47

Page 33

10.5 Electrical Connection to the Heater

BX Connector

Junction Box

Flexible Conduit

Burner

Connect wires together

with suitable approved

wire connectors.

Green to Ground

White to L2

Black to L1

L1 L2

Ground

Black White

Green

SECTION 10: WIRING

IMPORTANT: Junction box is not provided with heater.

Conduit can also be attached directly to heater with wire junction made within the heater cabinet.

25 of 47

Page 34

UHD LOW PROFILE DUCT FURNACE INSTALLATION OPERATION AND SERVICE MANUAL

Cut/Pinch Hazard

Wear protective gear during installation, operation and service.

Edges are sharp.

WARNING

Failure to follow these instructions can result in death, electric shock, injury or property damage.

Burn Hazard

Allow heater to cool before service.

Tubing may still be hot after operation.

Explosion Hazard

Turn off gas supply to heater before service.

DANGER

Electrical Shock Hazard

Disconnect electric before service.

Heater must be connected to a properly grounded electrical source.

SECTION 11: OPERATION AND MAINTENANCE

Read this manual carefully before installation, operation, or service of this equipment. All components are accessed via the door secured by sheet metal screws with grounding strap. Opening the door exposes live electrical connections and hot components.

11.1 Pre-Start-Up Checks

All pre-start-up checks must be carried out before lighting the heater.

Ensure that the heater and all controls are suitable for the gas, pressure and electrical supply to which they are to be connected.

11.1.1 Electrical Checks

1. Check that all site wiring is connected in accordance with the appropriate wiring diagram on Page 23, Section 10.3.

11.1.2 Gas Supply

All aspects of the gas installation including the gas meter must be inspected, tested for gas tightness and purged in accordance with local and national codes.

Ensure that the air is fully purged from the heater inlet pipe up to the main gas valve inlet test nipple.

11.2 Begin Start-Up

11.2.1 Before Operating the Heater

To ensure that all the controls are in safe working order, operate the heater for the first time with the isolating gas valve turned off and power supply turned on.

1. Turn off the isolating gas valve.

2. Turn up the thermostat above room temperature. The automatic ignition sequence will now begin as described on Page 27, Figure 15.

There will be no ignition of the burner and lockout will occur, which proves the controls are operating correctly.

11.1.3 Mechanical Checks

1. Check that the flue (and air intake for separated combustion units) is installed in accordance with the instructions in this manual and local regulations. See Page 12, Section 7.

26 of 47

Page 35

Figure 15: Automatic Burner Control Sequence

If at any stage the flame fails, the control will retry for ignition. The control has four trials for ignition before a one hour lockout.

½PSI IN

OFF

Regulator

Outlet Pressure

Gas Inlet

Inlet Pressure

TOP VIEW

END VIEW

Description Part Number

Gas Valve 75 – 125 NG 90032505 Gas Valve 75 – 125 LP 90032506

Burner Sequence for Ignition Control

Thermostat 24 V

SECTION 11: OPERATION AND MAINTENANCE

RUNSTART

SHUT DOWN

Flue Blower

Pressure

Switch

Ignition Spark

Start Gas Valve

Flame Signal

*Purge time begins at pressure switch change over.

30 Seconds Purge*

ts = 10 Seconds

Required Incoming Signals

Signals Output By Control

Figure 16: Gas Valve for Models UHD[X][S] 75 – 125

30 Seconds Post

27 of 47

Page 36

UHD LOW PROFILE DUCT FURNACE INSTALLATION OPERATION AND SERVICE MANUAL

11.2.2 Start-Up the Gas Valve (All Gases)

11.2.2.1 Check Burner Gas Pressure

1. Remove the plug in the outlet (burner) pressure test point and connect a pressure tap and a

11.3 Complete Start-Up

Ensure that all covers are fitted correctly and all test points are properly sealed.

manometer.

2. With the burner firing, measure the pressure on the manometer. To adjust the burner pressure, remove the regulator cover from the valve and turn the regulator adjustment screw to set the required burner pressure as stated in the Technical Data Table for the correct gas and model on Page 45, Section 16.3.

11.3.1 Instruction to the User

Explain the controls of the heater to the user including how to turn it on and off, using the controls fitted on site.

Give this manual to the u Ensure that the user is shown and understands the

importance of maintaining clearances to combustibles on Page 6, Figure 3, installer

IMPORTANT: If the correct burner pressure cannot be reached, then check the inlet pressure to the valve with the burner firing. See Technical Data

responsibility on Page 4, Section 2, user instructions on Page 29, Section 12 and all warnings defined in this manual.

Ta bl e on Page 45, Section 16.3 for inlet pressure requirement.

Do not continue to adjust the regulator if the pressure is not changing.

ser.

If the inlet pressure is too low to allow correct burner pressure setting, then the gas inlet pressure must be corrected before completing the start-up.

Check Gas Rate

1. Af t e r b urner pressure adjustment, allow the heater to operate for at least 15 minutes and then re-check settings. Adjust pressure setting if necessary.

2. Check gas flow rate at gas meter.

3. Turn off heater and electrical supply.

4. Remove the manometer and refit all covers to the valve and tighten the screw of the outlet pressure tap.

11.2.3 Pressure Switch

The pressure switch is factory pre-set for each model and is not adjustable.

11.2.4 Turning Off the Heater

Set the thermostat to the "OFF" position or lowest setting and the main burner will stop.

11.2.5 External Controls

External controls may include time switch, interlock switch, room thermostat and frost thermostat. Operate each control to ensure that they function correctly. Set the switches (if fitted) and thermostat(s) to the users’ requirements.

28 of 47

Page 37

SECTION 12: USER INSTRUCTIONS

Cut/Pinch Hazard

Wear protective gear during installation, operation and service.

Edges are sharp.

WARNING

Failure to follow these instructions can result in death, electric shock, injury or property damage.

Burn Hazard

Allow heater to cool before service.

Tubing may still be hot after operation.

Explosion Hazard

Turn off gas supply to heater before service.

DANGER

Electrical Shock Hazard

Disconnect electric before service.

Heater must be connected to a properly grounded electrical source.

SECTION 12: USER INSTRUCTIONS

The UHD[X][S] Series heaters are fully automatic and operate from the external controls fitted on site.

The only user control at the heater is the Manual Reset Limit Switch - See Page 30, Section 12.3.

See Page 41, Figure 15.3 for Manual Reset Limit Switch location inside control housing.

12.1 Heater Operation

When the heater has been switched on by the thermostat installed on site, the main burner will automatically turn on.

The burner control box will control the safe ignition of the flame.

All heaters require a constant gas and electricity supply which must not be interrupted during the normal operation of this heater.

12.2 Common User Controls

12.2.1 Manual Reset Limit Switch

Do not make more than one attempt to restart the heater if manual reset limit switch locks out.

The vent or heat exchanger may be blocked.

The fault must be traced and repaired.

Failure to follow these instructions can result in death, injury or property damage.

The limit thermostat is located inside the access door of the heater. See Page 41, Section 15.3. This control protects against excessive heat build-up inside the burner compartment.

WARNING

Explosion Hazard

29 of 47

Page 38

UHD LOW PROFILE DUCT FURNACE INSTALLATION OPERATION AND SERVICE MANUAL

Reset Button

To reset manual reset limit switch, press reset button. NOTE: To reset, the switch must be cool.

Description Part Number

Manual Reset Limit Switch 90412106

Figure 17: Manual Reset Limit Switch

12.3 Lighting Instructions

12.3.1 To Turn On Heater

1. E n s ure that the electrical and gas supplies to the heater are on. Check that the on site controls are "ON".

IMPORTANT: The thermostat setting must be above the ambient temperature for the heater to operate.

12.4.1 Simple Troubleshooting (Burner Faults)

If the burner fails to ignite for any reason, it will retry for ignition (four trials total). After four unsuccessful ignition trials, the control will put the heater into lockout for one hour.

Lockout should not occur during normal operation of the heater and indicates there is a fault condition which must be corrected. There is an LED light on the ignition control that flashes codes to assist in fault correction. See Page 30, Figure 18 for LED indication codes.

Figure 18: LED Diagnostic Codes

LED INDICATION FAULT MODE

Slow Flash Normal Operation - No call for heat.

Fast Flash Normal Operation - Call for heat.

2 Flashes Ignition Lockout - No flame detected.

3 Flashes Airflow Fault - Pressure switch open or closed.

4 Flashes Temperature Limit or

Manual Reset Limit Switch Open

5 Flashes Flame Sense Error - Gas valve not energized.

Steady On Internal Control Failure

2. The automatic firing sequence will begin as described on Page 27, Figure 15. The heater will now operate automatically under the control of the on site controls.

12.3.2 To Turn Heater Off

Set the thermostat to the "OFF" position. The burner will turn off immediately. To re s t a r t , t urn the thermostat above room temperature.

12.4 Simple Troubleshooting

Some possible reasons for the heater not operating are:

1. G a s s upply not "ON".

2. Electricity supply not "ON".

3. The time and/or temperature controls are not "ON".

4. A limit switch may have operated. This may be caused by an interruption of the electrical supply, failure of the distribution fan or vent or heat exchanger blockage.

If a temperature limit switch persistently trips, there is a fault which must be investigated by a contractor qualified in the installation and service of gas-fired heating equipment.

30 of 47

Page 39

SECTION 13: SERVICING

Cut/Pinch Hazard

Wear protective gear during installation, operation and service.

Edges are sharp.

WARNING

Failure to follow these instructions can result in death, electric shock, injury or property damage.

Burn Hazard

Allow heater to cool before service.

Tubing may still be hot after operation.

Explosion Hazard

Turn off gas supply to heater before service.

DANGER

Electrical Shock Hazard

Disconnect electric before service.

Heater must be connected to a properly grounded electrical source.

SECTION 13: SERVICING

13.1 Servicing Instructions

After start-up, the heater will require maintenance to be carried out, at a minimum, 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, always test fire the heater in accordance with the start-up instructions on Page 26, Section 11 through Page 28, Section 11.3.1 to ensure all safety systems are in working order before leaving the heater to operate. Minor faults may be traced by using the troubleshooting charts on Page 34, Section 14 through Page 38, Section 14.5.

IMPORTANT: Check all gas pipes and pipe joints to ensure there are no cracks or gas leaks. Any cracks in the pipes or pipe joints must be repaired.

IMPORTANT: Inspect all suspended components and hardware. Ensure that they are in good condition, properly tightened, and corrosion free.

13.2 Burner Maintenance

1. Open the door and remove the burner compartment cover. See Page 40, Section

15.2.

2. Clean any deposits from the main burner which may have formed in the injectors or venturi of the bu

3. Remove the ignition electrode and flame probe. Check condition of ignition electrode and flame probe. Clean off any deposits which may have been formed, check condition of ceramic

rner. See Page 40, Section 15.2.1.

insulators. Replace as required. See Page 41, Figure 15.3.

13.3 Heat Exchanger Maintenance

The heat exchanger will remain clean unless a problem has developed with combustion. Inspect the heat exchanger. Look for signs of overheating at the front tubes which may indicate burner over firing or persistently low air flows.

13.4 Gas Valve Maintenance

No regular maintenance is required on this device. To change gas control valves, See Page 39, Section

15.1.

Do not repair or disassemble gas valve.

Replace faulty gas valves with replacement parts sold and supplied by Roberts-Gordon LLC.

13.5 Flue Blower

The flue blower should not require maintenance. However, if the air pressure switch is causing burner lockout, then remove the flue blower from the vent box by unscrewing the three screws at the mounting plate. Remove the four scre mounting plate to the fan inlet (See Page 42, Section 15.5). Ensure that the fan is free to run and that the fan wheel is clean.

13.6 Venting and Air Intake Pipe

Inspect all venting and air intake pipe. Ensure that all seams are sealed and suspension points secure. Repair suspension points if any part of the venting or combustion air pipe is sagging. Check to make sure any insulation is not missing or in poor condition. Replace as required. Check all venting and air intake components to ensure they are in good condition, gas tight and corrosion-free.

ws attaching the

31 of 47

Page 40

UHD LOW PROFILE DUCT FURNACE INSTALLATION OPERATION AND SERVICE MANUAL

13.7 Maintenance Checklist Installation Code and Annual Inspections:

All installation and service of ROBERTS GORDON

equipment must be performed by a contractor qualified in the installation and service of equipment sold and supplied by Roberts-Gordon LLC and conform to all requirements set forth in the

ROBERTS GORDON

manuals and all applicable governmental authorities pertaining to the installation, service, operation and labeling of the equipment.

To help facilitate optimum performance and safety, Roberts-Gordon LLC recommends that a qualified contractor conduct, at a minimum, annual

inspections of your ROBERTS GORDON equipment and perform service where necessary, using only replacement parts sold and supplied by Roberts-Gordon LLC.

Annual Fall Start-up Follow entire start-up procedure at this time and check control settings and

operation.

The Vicinity of the Heater Do not store or use flammable objects, liquids or vapors near the heater.

Immediately remove these items if they are present.

See Page 5, Section 3.

Vehicles and Other Objects

Maintain the clearances to combustibles.

Do not hang anything from, or place anything on, the heater.

Make sure nothing is lodged in between the heat exchanger tubes.

Immediately remove objects in violation of the clearances to combustibles.

See Page 6, Section 4.

Vent Pipe/Terminals Venting must be intact. Using a flashlight, look for obstructions, cracks on the

pipe, gaps in the sealed areas or corrosion.

The area must be free of dirt and dust.

Remove any carbon deposits or scale using a wire brush.

If the vent terminal has a screen built in, remove any dirt, dust or deposits from the screen.

See Page 19, Section 8.

Cabinet Exterior After installation, touch up scratches. Periodic painting should be done there-

after as required. Warning labels and logo labels should be legible and accu- rate. Please contact Roberts-Gordon LLC or ROBERTS GORDON

independant distributor if you need replacement warning labels or logo labels. See Page 2, Figure 1 through Page 3, Figure 2

32 of 47

Page 41

SECTION 13: SERVICING

Combustion Air Intake Pipe

Intake pipe and inlet must be intact. Look for obstructions, cracks on the pipe, gaps in the sealed areas or corrosion.

The area must be free of dirt and dust.

Clean and reinstall as required.

See Page 19, Section 8

Heat Exchanger Make sure there are no cracks.

Make sure there is no sagging, bending or distortion.

Clean or replace as required.

Gas Line and Shut-off Valves

Burner Observation Window

Flue Blower Scroll, Wheel

Check for gas leaks.

See Page 20, Section 9.

Make sure it is clean and free of cracks or holes.

Clean and replace as required.

Compressed air or a vacuum cleaner may be used to clean dust and dirt.

and Motor Inshot Burners and

Orifices

Clear obstructions (even spider webs will cause problems).

Carefully remove any dust and debris from the burner.

Direct-Spark Igniter Replace if there are cracked ceramics, excessive carbon residue, or erosion

of the electrode.

The electrode gap should be 1/8" (3.2 mm).

Thermostat There should be no exposed wire or damage to the device or wiring.

See Page 22, Section 10.

Suspension Points Make sure the heater is hanging securely.

Look for signs of wear on the suspension materials or ceiling.

See Page 10, Figure 5.

Silicone Tubing Ensure tight, secure fit on all pressure fittings at pressure switch,

burner partition, and blower outlet.

Gas Valve Verify that cap covering pressure regulator adjustment screw is secure and

has not been tampered with.

Verify all wiring connections.

Condensate Drain

Flush drain and clear any obstructions.

(when installed) Ductwork Consult an indoor air quality professional for proper cleaning procedures. Air Circulation Blower For a complete inspection, refer to the manufacturers installation, operation

and service manual.

Wall Tag If wall tag is present, make sure it is legible and accurate. Please contact

Roberts-Gordon LLC or your ROBERTS GORDON

independent distributor if

you need a wall tag. See Page 4, Section 2.1.

33 of 47

Page 42

UHD LOW PROFILE DUCT FURNACE INSTALLATION OPERATION AND SERVICE MANUAL

Cut/Pinch Hazard

Wear protective gear during installation, operation and service.

Edges are sharp.

WARNING

Failure to follow these instructions can result in death, electric shock, injury or property damage.

Burn Hazard

Allow heater to cool before service.

Tubing may still be hot after operation.

Explosion Hazard

Turn off gas supply to heater before service.

DANGER

Electrical Shock Hazard

Disconnect electric before service.

Heater must be connected to a properly grounded electrical source.

SECTION 14: TROUBLESHOOTING

34 of 47

Page 43

14.1 General

Ensure air flow through the

heat exchanger is

appropriate per the rating

plate.

If problems persist, contact

Roberts-Gordon LLC at

www.rg-inc.com

Heater Operating

TROUBLESHOOT ENDS.

Replace limit switch.

The limit switch has

tripped. See Manual Reset

Limit Switch section.

Use Troubleshooting for

Automatic Ignition Burner

Systems section to test burner.

Has burner “Locked Out”?

Ye s

With external controls (i.e.

thermostat) on, does the

burner continue through the

heating cycle?

Ye s

Does the flue blower run?

Use Troubleshooting for

Flue Blower section to test

fan.

Ye s

Burner has locked out due

to ignition failure. Use

Trou bleshooting for Automatic

Ignition Burner Systems

section to test burner.

Is ignition control showing a

"2 flashes" LED code?

Ye s

Fan and limit switch are

operating normally.

Replace temperature limit

switch.

UHD 75: Press in reset button on manual reset limit switch. UHD 100 - 125: Wait

10 - 15 minutes for limit

switch to cool. Does fan

stop running?

Is ignition control showing a

"4 flashes" LED code?

Ye s

Turn on supplies.

Are gas & electrical

supplies on?

Ye s

START

SECTION 14: TROUBLESHOOTING

35 of 47

Page 44

UHD LOW PROFILE DUCT FURNACE INSTALLATION OPERATION AND SERVICE MANUAL

If problems persist, contact

Roberts-Gordon LLC at

www.rg-inc.com

Heater Operating

TROUBLESHOOT ENDS.

Trace fault in supervision

system. See

Trou bleshooting

for Flame Supervision

System section.

Ye s

Is ignition control showing

a "2 flashes" LED code?

Is the flame current at

least 1 μAmp DC when

the flame ignites?

Ignition control faulty;

replace.

See Ignition Control section.

Is ignition lead okay and

connected?

Is spark electrode okay?

Ye s

Replace valve.

Is the gas valve operating?

To test valve, See

Trou bleshooting for Gas

Valves section.

Does the flame light?

Ye s

Wait 30 - 40 seconds.

Does ignition spark

operate?

Ye s

Flue blower faulty;

replace

Burner control faulty or wiring

connections faulty. Repair

or replace as required

Check for too much vent/air inlet duct. Check for blockage in vent and combustion air circuit. Check for faulty air pressure switch. Check pressure switch hoses for leaks or cracks. Do not attempt to circumvent pressure switch circuit to place unit in operation.See Pressure Switch section for details.

Does air pressure switch

change over?

Ye s

Is 120 V supply at fan

connections?

Does flue blower run?

Ye s

Fan and limit switch are

operating normally.

Replace temperature limit

switch.

UHD 75: Press in reset button on manual reset limit switch. UHD 100 - 125: Wait

10 - 15 minutes for limit switch to cool. Does fan

stop running?

Is ignition control showing a

"4 flashes" LED code?

Ye s

Turn on controls.

Are external controls (i.e. Thermostat) on?

Ye s

Turn on supplies.

Are gas & electrical

supplies on?

Ye s

START

For optimum heater performance, use only replacement parts sold and supplied by Roberts-Gordon LLC.

Conduct start-up procedure as shown on Page 26, Section 11.

14.2 Troubleshooting For Automatic Ignition Burner Systems

36 of 47

Page 45

14.3 Troubleshooting for Flame Supervision System

NOTE: Minimum flame probe current 1 μA DC. Typical flame probe current 3-5 μA DC.

To m e a sure 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.

SECTION 14: TROUBLESHOOTING

Is the flame present and

at least 1 μA DC flame

current?

Ye s

Is there a current flowing in the flame probe circuit with

no flame present?

damaged? Is the flame probe

Ye s

damaged or touching earthed

Does “lockout” occur when

there is a flame present?

Heater Operating

TROUBLESHOOT ENDS.

Ye s

Use General

Trou bleshooting section to

trace the fault.

Is the connecting lead

components?

Is inlet burner gas pressure

correct? Is live and neutral

polarity correct? Is

flame probe circuit correct?

Repair or replace as

required.

If problems persist, contact

Roberts-Gordon LLC at

www.rg-inc.com

Ye s

Repair or replace as

required.

Ye s

Replace ignition control.

37 of 47

Page 46

UHD LOW PROFILE DUCT FURNACE INSTALLATION OPERATION AND SERVICE MANUAL

Valve faulty.

Replace with one of

correct type.

Fault elsewhere.

Correct pressure problem.

If problems persist, contact

Roberts-Gordon LLC at

www.rg-inc.com

Valve Operating

TROUBLESHOOT ENDS.

Ye s

Valve or ignition control

faulty. Replace with one of correct type.

Does gas pressure at

outlet of valve return to zero or

lower when valve turns off?

Ye s

Does gas pressure at outlet

of the valve rise when

valve turns on?

Ye s

Is gas pressure at inlet of the

valve correct for gas type?

Note pressure found.

Ye s

START

If problems persist, contact

Roberts-Gordon LLC at

www.rg-inc.com

Blower Operating

TROUBLESHOOT ENDS.

Blower motor faulty.

Replace with correct type.

Check blower motor leads

for loose connections.

Correct power

supply problem.

Ye s

START

Does blower turn on and

off while burner is firing

continuously?

Ye s

Does flue blower run

automatically when there

is a call for heat?

Ye s

For optimum heater performance, use only replacement parts sold and supplied by Roberts-Gordon LLC.

Conduct start-up procedure as shown on Page 26, Section 11.

14.4 Troubleshooting for Gas Valves

14.5 Troubleshooting for Flue Blower

38 of 47

Page 47

SECTION 15: REPLACEMENT PARTS

½PSI IN

OFF

Flexible Air Duct

NOTE: Separated combustion

Description Part Number

Gas Valve, NG (Models UHD[X][S] 75 - 125) 90032505 Gas Valve, LP (Models UHD[X][S] 75 - 125) 90032506

model shown.

SECTION 15: REPLACEMENT PARTS

DANGER

Electrical Shock Hazard

Use only genuine ROBERTS GORDON

Explosion Hazard

replacement parts per this installation, operation and

WARNING

Fire Hazard

Carbon Monoxide Hazard

service manual.

Failure to follow these instructions can result in death, electric shock, injury or property damage.

See warnings and notes on Page 31, Section 13 before removing or replacing parts

Burner Components

All serviceable burner parts are accessed by the door on the side of the heater. Remove the

Replace in reverse order. Verify that the gas flow direction of the valve is correct. Use a minimum amount of gas seal on the thread joint. Check that all the joints are leak free. Reset gas valve. See Page 28, Section 11.2.2.

sheetmetal screws.

15.1 Gas Valve

Remove the gas supply pipe at the heater inlet.

IT IS IMPORTANT THAT ONLY THE CORRECT GAS VALVE IS USED WHEN REPLACING THESE CONTROLS.

Follow steps on Page 40, Section 15.2 through Page 40, Section 15.2.1 to remove gas valve/

manifold. .

39 of 47

Page 48

UHD LOW PROFILE DUCT FURNACE INSTALLATION OPERATION AND SERVICE MANUAL

Remove flexible air duct from spigot

Viewing port for flame probe

Flame Probe

Burner Compartment Cover

Ignition Electrode

Remove screws and pull off burner cover

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.

NOTE: Flexible duct only applies for model UHDS.

Ensure gas tight fitting of injectors.

Ensure correct alignment with burners.

Ensure all pipe joints are gas tight.

15.2 Burner Compartment

15.2.1 Burner Injectors

MODEL UHD[X][S] 75 UHD[X][S] 100 UHD[X][S] 125

Orifice Quantity 5 6 7

Natural Gas (G20)

Orifice Marking 49 46 46

P/N 91930049 91930046 91930046

Propane (G31)

Orifice Marking 1.15 mm 1.25 mm 1.25 mm

P/N 91930115 91930125 91930125

40 of 47

Page 49

15.3 Ignition Electrode and Flame Probe

Inshot

Burners

.120

(3 mm)

spark

gap

Ignition

Electrode

Burner Compartment

Front Views

Manual Reset

Limit Switch

(Position may vary.)

Ignition

Electrode

Flame

Probe

Limit

Switch

Flame

Probe

Inshot

Burners

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] 75 92000002 5 Inshot Burners UHD[X][S] 100 92000002 6 Inshot Burners UHD[X][S] 125 92000002 7 Limit Switch 90412104 1 Manual Reset Limit Switch (75 only) 90412106 1

To replace the electrode or flame probe, remove the electrical lead and screw. Pull out from mounting. Refit in reverse ensuring that the gap to burner is as shown in the front view of the burner compartment.

SECTION 15: REPLACEMENT PARTS

15.4 Heat Exchanger

The heat exchanger consists of a six-pass design with 1.5" outer diameter [aluminized steel] [409 stainless steel] tube. The tube plates are made of [aluminized steel] [409 stainless steel]. The tube supports are made of [galvannealed steel] [409 stainless steel].

41 of 47

Page 50

UHD LOW PROFILE DUCT FURNACE INSTALLATION OPERATION AND SERVICE MANUAL

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.

Refit in reverse order.

To change the vent and air intake orientation from back to top, remove the blower and mounting plate as above.

Remove intake (if applicable) and exhaust covers from top of the heater.

Rotate the blower, mounting plate and gasket clockwise until the flue adapter lines up with the top hole. Secure screws.

If applicable, remove the flexible air duct from the air intake adapter on the back.

If applicable, remove the air intake adapter from the back of the heater and install in the appropriate hole on top. Reconnect the flexible air duct.

Install intake and exhaust covers over the back holes.

NOTE: Separated combustion model shown.

15.5 Flue Blower Vertical Installation

MODEL UHD[X][S] 75 UHD[X][S] 100 UHD[X][S] 125

Flue Blower P/N 90710404 90710405 90710405

IT IS IMPORTANT THAT ONLY THE CORRECT FLUE BLOWER SPECIFIED FOR EACH MODEL TYPE IS USED WHEN REPLACING THESE ITEMS.

Carry out a start-up after working on or changing a flue blower. See Page 26, Section 11.

42 of 47

Page 51

15.6 Pressure Switch

SECTION 15: REPLACEMENT PARTS

Pull off 3 way connector. Spring open plastic clips of mounting cradle. Replace with correct type of pressure switch for model. The pressure switches are color coded for each pressure setting.

Carry out a start-up after working on or changing a pressure switch. See Page 26, Section 11.

MODEL UHD[X][S] 75 UHD[X][S]100 UHD[X][S] 125

Pressure Switch Kit P/N

Color Code

Set Point in wc

Pressure Switch Snap Ring P/N

90439810 90439810 90439803

black black gray

.35 .35 .41

90439850 90439850 90439850

15.7 Ignition Control

The control mounts to the heat exchanger plate. Pull out ignition cable and wiring from board, noting their positions. Release the four mounting standoffs. Refit in reverse. Ensure correct location of ignition cable and all other wiring.

15.8 Limit Switches

15.8.1 Removal and Replacement

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.

43 of 47

Page 52

UHD LOW PROFILE DUCT FURNACE INSTALLATION OPERATION AND SERVICE MANUAL

SECTION 16: SPECIFICATIONS

16.1 Dimension Data

TOP VIEW

REAR VIEW

4 x 3/8" Captive Nuts Provided

Air Intake

UHD[X]S

(

Optional Position)

Flue (Optional Position)

only;

Duct Flange

SIDE VIEW

Air Intake

Flue

(UHD[X]S only)

Thermostat Connection

UHD[X][S]

100

UHD[X][S]

125

Gas Supply

Electrical

Supply

ModelABCDEFGHJKLMNPQRST

28.5

17.6

20.3

17.6

16.6

1. 2 5

6.3

6.1

2.8

1. 6

3.4

6.7

18.2

5.5

4.4

6.8

(cm)

72.4

28.5

72.4

28.5

72.4

44.7

22.6

57.4

22.6

57.4

51.6

20.3

51.6

20.3

51.6

44.7

17.6

44.7

17.6

44.7

42.2

16.6

42.2

16.6

42.2

3.2

1. 2 5

3.2

1. 2 5

3.2

16.0

7. 0

17.8

7. 0

17.8

15.5

6.0

15.2

6.0

15.2

7. 1

2.4

6.1

2.4

6.1

4.1

1. 6

4.1

1. 6

4.1

8.6

3.4

8.6

3.4

8.6

17.0

6.7

17.0

6.7

17.0

46.2

18.2

46.2

18.2

46.2

14.0

6.3

16.0

6.3

16.0

11.2

4.4

11.2

4.4

11.2

17.3

6.8

17.3

6.8

17.3

1. 8

4.63281.3

1. 8

4.63794

1. 8

4.63794

44 of 47

Page 53

SECTION 16: SPECIFICATIONS

16.2 General Technical Data Table

Model UHD[X][S] 75 UHD[X][S] 100 UHD[X][S] 125

Full Load Amps @ 120 V A 1 2 2

Minimum Air Volume CFM 850 950 1020

Te m pe r a t ure Rise @ Minimum Air Volume °F (

Heat Exchanger Pressure Drop @ Minimum Air Volume in wc 0.06 0.05 0.06

Maximum Air Volume CFM 2650 3660 4750

Te m pe r a t ure Rise @ Maximum Air Volume °F (

Heat Exchanger Pressure Drop @ Maximum Air Volume in wc 0.36 0.55 0.98

Flue Size/Air Intake** in (cm) 4 (10)-All models

Duct Size (Width) in (cm) 16 3/4 (43) 21 3/4 (55) 21 3/4 (55)

Duct Size (Height) in (cm) 15 7/8 (40) 15 7/8 (40) 15 7/8 (40)

Weight lb (kg) 81 (36.7) 92 (41.7) 97 (44)

Recomended Mounting Height to Heater Base ft (m) 12 (3.66) 20 (6.10) 20 (6.10)

°C)

68 (37) 78 (43) 92 (51)

22 (12) 22 (12) 20 (11)

*Do not exceed the maximum length of flue stated or heater may not operate properly.

16.3 Technical Data Table

Model UHD[X][S] 75 UHD[X][S] 100 UHD[X][S] 125

Total Inp ut(Btu/h) x (1000) 75 100 125

Total Output(Btu/h) x (1000) 61.5 82 102.5

Efficiency % 82-All models

Natural Gas (G20) Data - Inlet Pressure 5.0 in wc Min., 14 in wc Max.

Burner Pressure in. wc3.52.6 3.3

LPG / Propane (G31) Data - Inlet Pressure 12.0 in wc Min., 14 in wc Max.

Burner Pressure in. wc10.09.1 10.0

45 of 47

Page 54

UHD LOW PROFILE DUCT FURNACE INSTALLATION OPERATION AND SERVICE MANUAL

46 of 47

Page 55

SECTION 17: ROBERTS GORDON® COMBAT® UHD-SERIES WARRANTY

SECTION 17: ROBERTS GORDON

COMBAT® UHD-SERIES WARRANTY

ROBERTS-GORDON LLC WILL PAY FOR:

Within 24 months from date of purchase by buyer or 27 months from the date of shipment by Roberts-Gordon LLC (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.

Roberts-Gordon LLC will require the part in question to be returned to the factory. Roberts-Gordon LLC will, at its sole discretion, repair or replace after determining the nature of the defect and disposition of part in question.

ROBERTS GORDON

Replacement Parts are warranted for a period of 18 months from date of shipment from Roberts-Gordon LLC or the remaining ROBERTS GORDON

COMBAT® UHD-Series warranty.

ROBERTS-GORDON LLC WILL NOT PAY FOR:

Service trips, service calls and labor charges. Shipment of replacement parts. Claims where the total price of the goods have not

been paid. Damage due to:

• Improper installation, operation or maintenance.

• Misuse, abuse, neglect, or modification of the ROBERTS GORDON

COMBAT® UHD-Series in any

way.

• Use of the ROBERTS GORDON

COMBAT® UHD-

Series for other than its intended purpose.

• Incorrect gas or electrical supply, accident, fire, floods, acts of God, war, terrorism, or other casualty.

• Improper service, use of replacement parts or accessories not specified by Roberts-Gordon LLC.

• Failure to install or maintain the ROBERTS GORDON COMBAT

UHD-Series as directed in the Installation,

Operation and Service manual.

• Relocation of the ROBERTS GORDON

COMBAT®

UHD-Series after initial installation

• The use of the ROBERTS GORDON

COMBAT® UHD-Series in a corrosive atmosphere containing contaminants.

• The use of the ROBERTS GORDON

COMBAT® UHD-Series in the vicinity of a combustible or explosive material.

• Any defect in the ROBERTS GORDON

COMBAT® UHD-Series arising from a drawing, design, or specification supplied by or on behalf of the consumer.

• Damage incurred during shipment. Claim must be filed with carrier.

WARRANTY IS VOID IF:

The ROBERTS GORDON® COMBAT® UHD-Series is not installed by a contractor qualified in the installation and service of gas-fired heating equipment.

Yo u cannot prove original purchase date and required annual maintenance history.

The data plate and/or serial number are removed, defaced, modified or altered in any way.

The ownership of the ROBERTS GORDON

COMBAT® UHD-Series is moved or transferred. This warranty is nontransferable.

Roberts-Gordon LLC is not permitted to inspect the damaged controller and/or component parts.

READ YOUR INSTALLATION, OPERATION AND SERVICE MANUAL

If you have questions about your controller, contact your installing professional. Should you need Replacement Parts or have additional questions, call or write:

Roberts-Gordon LLC

1250 William Street P. O . B o x 4 4 Buffalo, New York 14240-0044 +1.716.852.4400

On the web at:

www.robertsgordon.com www.rg-inc.com

Roberts-Gordon LLC' liability, and your exclusive remedy, under this warranty or any implied warranty (including the implied warranties of merchantability and fitness for a particular purpose) is limited to providing replacement parts during the term of this warranty.

Some jurisdictions do not allow limitations on

how long an implied warranty lasts, so this limitation may not apply to you. There are no rights, warranties or conditions, expressed or implied, statutory or otherwise, other than those contained in this warranty.

Roberts-Gordon LLC shall in no event be responsible for incidental or consequential damages or incur liability for damages in excess of the amount paid by

you for the ROBERTS GORDON Series. Some jurisdictions do not allow the exclusion or

COMBAT® UHD-

limitation of incidental or consequential damages, so this limitation or exclusion may not apply to you. This warranty gives you specific legal rights, and you may also have other rights which vary from jurisdiction to jurisdiction.

Roberts-Gordon LLC shall not be responsible for failure to perform under the terms of this warranty if caused by circumstances out of its control, including but not limited to war, fire, flood, strike, government or court orders, acts of God, terrorism, unavailability of supplies, parts or power. No person is authorized to assume for RobertsGordon LLC any other warranty, obligation or liability.

LIMITATIONS ON AUTHORITY OF REPRESENTATIVES:

No representative of Roberts-Gordon LLC, other than an Executive Officer, has authority to change or extend these provisions. Changes or extensions shall be binding only if confirmed in writing by Roberts-Gordon LLC's duly authorized Executive Officer.

47 of 47

Page 56

Page 57

OWNER WARRANTY REGISTRATION CARD

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):

About your Heater:

Model#:_______________________ Serial #:___________________________ Fuel:____________ Installation Date:__________

Type of Installation (check one):

o Automotive o Manufacturing o Warehouse o Recreational o Aircraft o Public Building o Ofﬁce o Retail o Agricultural o Other______________

Mail or Fax to:

Roberts Gordon LLC • 1250 William Street, P.O. Box 44 • Buffalo, NY 14240-0044 • Phone: 716-852-4400 • Fax: 716-852-0854

Toll Free: 800-828-7450 • www.rg-inc.com

Installation Code and Annual Inspections: All installation and service of ROBERTS GORDON® equipment must be performed by a

contractor qualiﬁed in the installation and service of equipment sold and supplied by Roberts-Gordon LLC and conform to all requirements set forth in the ROBERTS GORDON

manuals and all applicable governmental authorities pertaining to the installation, service, operation and labeling of the equipment. To help facilitate optimum performance and safety, Roberts-Gordon LLC recommends that a qualiﬁed contractor conduct, at a minimum, annual inspections of your ROBERTS GORDON

equipment

and perform service where necessary, using only replacement parts sold and supplied by Roberts-Gordon LLC.

Further Information: Applications, engineering and detailed guidance on systems design, installation and equipment performance is available through ROBERTS GORDON

representatives. Please contact us for any further information you may require, including

the Installation, Operation and Service Manual.

These products are not for residential use.

copied in a

ny form or by any means – graphic, electronic, or mechanical, including photcopying, recording, taping, or information storage and retrieval systems – without written permission of Roberts Gordon LLC.

Printed in the U.S.A.

Warm Air Heating

Page 58

Page 59

Page 60

Roberts Gorden 125, 100, 75 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual