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Therma Grow™ Greenhouse Heaters

Owner’s Manual • Therma Grow™

7

■   Propane gas has a distinctive odor. Learn to 

recognize these odors. (Reference Fuel Gas Odor 

and Odor Fading sections above).

■  If you have not been properly trained in repair and 

service of propane gas then do not attempt to light 

heater, perform service or repairs, or make any 

adjustments to the heater on the propane gas fuel 

system.

■  Even if you are not properly trained in the service 

and repair of the heater, ALWAYS be consciously 

aware of the odors of propane gas and natural gas.

■  A periodic sniff test around the heater or at the 

heater’s joints; i.e. hose, connections, etc., is a 

good safety practice under any conditions. If you 

smell even a small amount of gas, CONTACT 

YOUR FUEL GAS SUPPLIER IMMEDIATELY. DO 

NOT WAIT!

1.  Do not attempt to install, repair, or service this 

heater or the gas supply line unless you have 

continuing expert training and knowledge of gas 

heaters.

Qualifications for service and installation of this 

equipment are as follows:

a.  To be a qualified gas heater service person, you 

must have sufficient training and experience to 

handle all aspects of gas-fired heater installation, 

service and repair. This includes the task of instal-

lation, troubleshooting, replacement of defective 

parts and testing of the heater. You must be able 

to place the heater into a continuing safe and 

normal operating condition. You must completely 

familiarize yourself with each model heater by 

reading and complying with the safety instructions, 

labels, Owner’s Manual, etc., that is provided with 

each heater.

b.  To be a qualified gas installation person, you must 

have sufficient training and experience to handle 

all aspects of installing, repairing and altering gas 

lines, including selecting and installing the proper 

equipment, and selecting proper pipe and tank size 

to be used. This must be done in accordance with 

all local, state and national codes as well as the 

manufacturer’s requirements.

c.  In the Commonwealth of Massachusetts, this 

product must be installed by a gas fitter licensed by 

the Commonwealth of Massachusetts.

2.  All installations and applications of L.B. White 

heaters must meet all relevant local, state and 

national codes. Included are L.P. gas, natural gas, 

electrical, and safety codes. Your local fuel gas 

supplier, a local licensed electrician, the local fire 

department or similar government agencies, or 

your insurance agent can help you determine code 

requirements. Refers to the following:

   Installations in the U.S.:

  -  ANSI/NFPA 58, latest edition, Standard for Storage 

and Handling of Liquefied Petroleum Gas and/or 

  - ANSI Z223.1/ NFP 54, National Fuel Gas Code

  - ANSI/NFPA 70, National Electrical Code.

   Installations in Canada:

   - CAN1-B149.1 or CAN1-B149.2 Installation Codes

   -  CSA C22.1, Part 1 Standard Canadian Electrical 

Code, CSA C22.2 No.3, Electrical Features of 

Fuel Burning Equipment.

3.  Do not move, handle, or service heater while in 

operation or connected to a power or fuel supply.

4.  This heater may be installed in areas subject to 

washdown. This heater may only be washed on the 

external case assembly-see Cleaning Instructions. 

Do no was the interior of the heater. Use only 

compressed air, soft brush or dry cloth to clean 

the interior of the heater and it’s components. After 

external washdown, do not operate this heater until 

it is completely dry. In any event, do not operate 

the ehater for at least one hour after external 

washdown.

5.  Do not block air intakes or discharge outlets of the 

heater. Doing so may cause improper combus-

tion or damage to heater components leading to 

property damage.

6.  The hose assembly shall be visually inspected on 

a daily basis, after heater relocation, and when the 

heater is in use. If it is evident there is excessive 

abrasion or wear, or if the hose is cut, it must be 

replaced prior to the heater being put into opera-

tion. The hose assembly shall be protected from 

building materials, and contact with hot surfaces 

during use. The replacement hose assembly shall 

be that specified by the manufacturer.

Attention - Critical 

Points to Remember!

Summary of Contents for Therma Grow HW120

Page 1: ...NOVATIVE HEATING SOLUTIONS 411 Mason Street Onalaska WI 54650 800 345 7200 608 783 5691 608 783 6115 fax www lbwhite com Congratulations Your new L B White heater incorporates the benefits from the mo...

Page 2: ...it Switch 19 Gas Control Valve 19 Igniter and Flame Sensor 20 Gas Pressure Check 20 Troubleshooting Guide 22 Electrical Connection Ladder Diagram 28 Service Parts Identification Schematic 34 Warranty...

Page 3: ...ASPHYXIATION DUE TO LACK OF ADEQUATE AIR SUPPLY OR CARBON MONOXIDE POISONING ELECTRICAL SHOCK READ THIS OWNER S MANUAL BEFORE INSTALLING OR USING THIS PRODUCT ONLY PERSONS WHO CAN READ UNDERSTAND AND...

Page 4: ...Hour LP Gas Max 5 56 lbs 2 52 kg 10 19 lbs 4 62 kg Min N A 3 01 lbs 1 36 kg N A 5 56 lbs 2 52 kg Nat Gas Max 120 cu ft 3 42 m3 220 cu ft 6 28 m3 Min N A 65 cu ft 2 53 m3 N A 120 cu ft 3 42 m3 Motor Ch...

Page 5: ...ained on the dataplate This manual will instruct you in the operation and care of your unit Have your installer review this manual with you so that you fully understand the heater and how it functions...

Page 6: ...if you can smell the odorant in these fuel gases Learn to recognize the odor of propane gas and natural gas Local propane gas dealers will be more than happy to give you a scratch and sniff pamphlet...

Page 7: ...he manufacturer s requirements c In the Commonwealth of Massachusetts this product must be installed by a gas fitter licensed by the Commonwealth of Massachusetts 2 All installations and applications...

Page 8: ...w L B White recommendations when installing this heater If during the installation or relocating of heater you suspect that a part is damaged or defective call a qualified service agency for repair or...

Page 9: ...omponent 9 Any heater connected to a piping system must have an accessible approved manual shut off valve installed within six feet 6 ft of the heater it serves 10 Check all connections for gas leaks...

Page 10: ...wner s Manual Make sure you know how to shut off the gas supply to the building and also to the individual heater Contact your fuel gas supplier if you have any questions 17 Any defects found in perfo...

Page 11: ...ter to flange holes and to vacant holes at top and bottom of blower outlet 5 Fasten the diverter to the flanges with the screws provided See Fig 3 FIG 2A FIG 2B FIG 3 Indoor Ventilation Requirements T...

Page 12: ...does not need to be directly in line to the heater Ensure the exhaust fan is kept free of blockage FIG 5 END WALL 1 1 2 FT MAX 2 FT MIN INTERIOR EXTERIOR AIR DISCHARGE DUCT ATTACHED TO AIR INLET OF H...

Page 13: ...ation consideration must be given to making sure the heater is located away from the people en tering or exiting the greenhouse so they cannot ac cidentally knock the heater or tamper with the heater...

Page 14: ...rovide interconnections for the two stage gas control valve in either single stage or two stage configuration utilizing either a thermostat or building controller Before connecting any thermostat or b...

Page 15: ...ral assembly of the components only The regulator must always be mounted so its vent regardless of location on the regulator is always pointed downward 3 Tighten all connections securely and check for...

Page 16: ...cal adjacent to the control box for assistance in troubleshooting Only qualified and prop erly trained personnel shall service or repair the heater c On a call for heat the motor will start and run fo...

Page 17: ...th pressurized air a dry brush or a dry cloth 5 The gas control valve in the PLUS model is a two stage control When a call for heat occurs the valve will open to its first stage rate Depending upon te...

Page 18: ...g Failure to follow this warning will result in burns causing injury WARNING Fire and Explosion Hazard Do not disassemble or attempt to repair any component part of the heater including regulators and...

Page 19: ...inute you should hear a pop coming from the switch which indicates the contacts of the switch have opened WARNING Fire Hazard Do not operate the heater with the high limit switch bypassed Operating th...

Page 20: ...ecks n The following explains a typical procedure to be followed in checking gas pressures n Consult the dataplate on the heater or page 4 in this manual for specific pressures to be used in conjuncti...

Page 21: ...stat down to its lowest setting Remove the cap from the HI and LO heat adjusting screws at the two stage pressure regulator on the gas control valve See Fig 18 for regulator location 3 Slowly turn up...

Page 22: ...present and gas on Use extreme caution when working on the heater n Failure to follow this warning may result in personal injury or death Heating Mode Problems Page L E D light is not on during a call...

Page 23: ...ain on a call for heat IGNITION TRIAL SEQUENCE First trial for ignition takes approximately 30 seconds Two more ignition trials occur Second trial immediatley follows if first trial failed If second t...

Page 24: ...to HEAT Ensure heater is connected to power supply Check breakers Is proper voltage delivered to selector switch Check all wiring for defects Repair or repalce if needed Yes Does selector switch send...

Page 25: ...rd final trial for ignition If ignition is not achieved after the third trial the heater will lock out and the ignition control module will present the three time flash pattern Either recycle the heat...

Page 26: ...g air proving switch closure No Are 115 volts sent from ignition control terminal IND to motor relay No If improper voltage is supplied contact electrician OR If no voltage is supplied to motor relay...

Page 27: ...g Check wiring between module and component Repair or replace as necessary or replace ignition control Provide proper pressure to heater and check with a gauge Check for voltage to switch Check wiring...

Page 28: ...heck for damage to motor and fan assembly and housing Repair or replace as necessary Yes Reconnect wires to capacitor Defective capacitor Replace the motor No Yes Are wires disconnected from capacitor...

Page 29: ...Therma Grow Greenhouse Heaters Owner s Manual Therma Grow 29 Electrical Connection Ladder Diagram Therma Grow 120 Standard lectrical Connection and Ladder Diagram Therma Grow 120...

Page 30: ...Therma Grow Greenhouse Heaters www lbwhite com Owner s Manual Therma Grow 30 Electrical Connection Ladder Diagram Therma Grow 120 Plus Electrical Connection and Ladder Diagram Therma Grow 120 Plus 28...

Page 31: ...row Greenhouse Heaters Owner s Manual Therma Grow 31 Electrical Connection Ladder Diagram Therma Grow 220 Standard 115 Volt 27 Electrical Connection and Ladder Diagram Therma Grow 220 115 Volt Supply...

Page 32: ...Grow Greenhouse Heaters www lbwhite com Owner s Manual Therma Grow 32 Electrical Connection Ladder Diagram Therma Grow 220 Standard 230 Volt 0 Volt Supply ectrical Connection and Ladder Diagram rma Gr...

Page 33: ...rma Grow Greenhouse Heaters Owner s Manual Therma Grow 33 Electrical Connection Ladder Diagram Therma Grow 220 Plus 115 Volt 2 Electrical Connection and Ladder Diagram Therma Grow 220 Plu 115 Volt Sup...

Page 34: ...ers www lbwhite com Owner s Manual Therma Grow 34 Electrical Connection Ladder Diagram Therma Grow 220 Plus 230 Volt 230 Volt Supply 30 120 VOLT TRANSFORMER 24 VOLT Electrical Connection and Ladder Di...

Page 35: ...dard Plus 1 Regulator LP Gas 2nd Stage Vent Over Outlet 550 06553 Regulator LP Gas 2nd Stage Vent Over Side 550 06665 Regulator Natural Gas 5 PSIG Inlet 13 5 Outlet 550 21414 2 Valve Manual Shut Off w...

Page 36: ...1 15 Igniter Hot Surface 573659 19 Flame Sensor 520139 20 High Limit Switch 573099 21 Heat Chamber 572466 22 Boot Selector Switch N A 571939 23 Selector Switch w Boot N A 571906 24 Control Box w Cover...

Page 37: ...Gas 550 06553 Natural Gas 500 24414 2 Valve Manual Shut Off with Nipple 500 03399 3 Hose 1 2 x 10 ft Rigid x Swivel 550 20714 4 Adapter Hose 1 2 NPT x 1 2 NPS 500 25873 5 Kit Sediment Trap 500 00815 6...

Page 38: ...w Boot 571906 24 Control Box w Cover 572485 572487 25 Window w O Ring 570002 26 Cover Control Box 572483 572484 27 Relay Motor 570221 28 Ignition Control 509298 29 Transformer 500 26412 30 Case Assem...

Page 39: ...other warranties includ ing any implied warranties or merchantability or fitness for a particular purpose are expressly disclaimed In the event any implied warranty is not hereby effectively disclaime...

Page 40: ...ation de ses appareils de chauffage L B White tient vous remercier de la confiance que vous lue t moignez et vous invite lue communiquer tout commentaire ou suggestion sans frais au 1 800 345 7200 The...

Page 41: ...21 Valve de controle du gaz 21 Dispositif d allumage et d tecteur de flamme 22 Verifications de la pression de gaz 22 Guide de d pannage 24 Connexions lectriqueset diagramme en escalier 31 Identifica...

Page 42: ...345 7200 ATTENTION L arriv e de gaz de l appareil doit tre aliment par une pression de gaz ad quate Se r f rer la fiche signal tique pour s assurer de la pression de gaz requise Une pression de gaz d...

Page 43: ...e Gaz Propane Max 5 56 lbs 2 52 kg 10 19 lbs 4 62 kg Min N A 3 01 lbs 1 36 kg N A 5 56 lbs 2 52 kg Gaz Natural Max 120 cu ft 3 42 m3 220 cu ft 6 28 m3 Min N A 65 cu ft 2 53 m3 N A 120 cu ft 3 42 m3 Ca...

Page 44: ...sur la plaque signal tique Ce manuel vous pr sente le fonctionnement et l en tretien de votre appareil Lire ce manuel avec votre installateur afin de vous assurer de bien comprendre la fournaise et s...

Page 45: ...tendra s accumuler au ras du sol ou dans les espaces situ s sous le niveau du sol viter de se retrouver sous le niveau du sol Le gaz naturel tant plus l ger que l air aura tendance s accumuler au plaf...

Page 46: ...nuel de l utilisateur de chacun des mod les avec lequel vous travaillez b Pour tre reconnu comme installateur qualifi d appareils au gaz vous devez avoir re u la formation ad quate en plus de poss der...

Page 47: ...s fermer l alimentation en gaz si l appareil n est pas en utilisation 13 Les appareils Greengro requ rant une alimenta tion lectrique de 230 volts doivent tre munis d un c ble lectrique comprenant 2 f...

Page 48: ...s en mati re de ventilation int rieure du pr sent manuel Installation de l appareil l ext rieur Therma Grow 120 Mod le Une sortie d air muni d a rateurs ailettes ayant au moins une surface de 120 sq i...

Page 49: ...contraire un exc s de chaleur qui dans les deux cas peut endom mager ou tuer les plantes Les plantes devraient tre prot g es par un syst me d appoint s par 6 Tous les r gulateurs de gaz doivent tre in...

Page 50: ...u d viateur sur les ouver tures libres au dessus et au dessous de la bouche de sortie du ventilateur 5 Fixez le d viateur aux brides au moyen des vis fournies Reportez vous la figure 3 FIG 2A FIG 2B F...

Page 51: ...cement de l entr e d air la conduite flexible doit tre install e La conduite doit tre coup e la longueur appropri e pour viter qu elle forme des coudes ou s affaisse ce qui emp cherait la bonne circul...

Page 52: ...suivantes 1 Retirer les capuchons bouchant les orifices sur la partie sup rieure du ch ssis Voir Fig 6 VENTILATEUR D EXTRACTION DANS UNE PARTIE LEV E DE LA SERRE CHA NE OU C BLE D BIT D AIR ENTR E SO...

Page 53: ...ntr leur de b timent est essentiel afin d assurer le bon d roulement des fonctions suivantes Les direc tives qui suivent indiquent quelles sont les interconnex ions de la valve de commande de gaz deux...

Page 54: ...osition ventilation il faut pr voir suffisamment de temps pour que le ventilateur s arr te compl tement avant de passer au mode chaleur Peu importe le type de commande utilis e on suivra les tapes sui...

Page 55: ...g n ral des composantes Le r gulateur doit toujours tre install de mani re ce que son orifice d vacuation soit orient vers le bas o qu il soit situ sur le r gulateur 3 Serrer fermement tous les branc...

Page 56: ...e commande Lorsque le voyant est allum de fa on continue cela indique que l appareil de chauffage fonctionne correctement Lorsque le voyant clignote cela signifie qu un probl me est pr sent dans le fo...

Page 57: ...l on positionne l interrupteur de s lection sur le mode de ventilation le voyant rouge NE S ALLUME PAS Le moteur du ventilateur d marre mais le dispositif d allumage n est pas aliment et l allumage n...

Page 58: ...t de cette directive peut entrainer des br lures graves ATTENTION RISQUE D INCENDIE ET D EXPLOSION Ne pas d sassembler ou tenter de r parer toute composante interne de l appareil incluant r gulateurs...

Page 59: ...ilateur soient en contact avec la partie plate de l arbre d entra nement du moteur FIG 12 Obturateur 1 Retirer les deux vis t le retenant l obturateur au bo tier du ventilateur Enlever l ensemble inte...

Page 60: ...rieur de l appareil Re brancher le courant lectrique vers l appareil Mettre l appareil en marche et s assurer du bon fon tionnement de celui ci FIG 14 VALVE DE CONTR LE DU GAZ 1 Enlever les l ments s...

Page 61: ...n de conna tre les niveaux de pression sp cifiques requis pour cette v rification Les pressions de gaz varient selon le type de combustible utilis n La pression du gaz mesur e de la prise d entr e jus...

Page 62: ...ssion du premier tage l aide des informations fournies sur la plaque signal tique ou la page 4 de ce manuel Si la pression de gaz inf rieure est lue pour le premier niveau de chaleur alors le r glage...

Page 63: ...gnote selon une s quence particuli re en fonction du probl me identifi Afin d utiliser efficacement les ordinogrammes on se doit d abord d identifier quel est le probl me en l associant la s quence de...

Page 64: ...ntr le du gaz La valve de contr le du gaz s ouvre L allumage se produit Le courant du d tecteur de flamme passe par la flamme du br leur et est renvoy la commande d allumage Le dispositif d allumage r...

Page 65: ...Therma Grow Appareil de chauffage pour serres www lbwhite com Manuel du propri taire Therma Grow 26...

Page 66: ...Therma Grow Appareil de chauffage pour serres Manuel du propri taire Therma Grow 27...

Page 67: ...Therma Grow Appareil de chauffage pour serres www lbwhite com Manuel du propri taire Therma Grow 28...

Page 68: ...Therma Grow Appareil de chauffage pour serres Manuel du propri taire Therma Grow 29...

Page 69: ...Therma Grow Appareil de chauffage pour serres www lbwhite com Manuel du propri taire Therma Grow 30...

Page 70: ...NOIR NOIR NOIR ALIMENTATION LECTRIQUE ROUGE ROUGE BLANC ALLUMEUR JAUNE BLEU VIOLET BRUN BLEU VERT VERT VERT VERT VERT BRUN BRUN MISE LA TERRE DU BRULEUR LIMITEUR INTERRUPTEUR JAUNE OBTURATEUR THERMOS...

Page 71: ...JAUNE BLEU VIOLET BRUN JAUNE VERT VERT BRUN BRUN MOTEUR BLANC POUR DONNER VENT MOTEUR POUR DONNER VENT MOTEUR FLAMBER DETECTEUR JAUNE BLEU ROUGE ATTENTION Cet appareil de chauffage peut se mettre en m...

Page 72: ...N BLEU VERT VERT ALLUMEUR OBTURATEUR FLAMBER DETECTEUR LIMITEUR INTERRUPTEUR BRUN BRUN VERT VERT MISE LA TERRE BLANC NOIR BLANC JAUNE BLEU ROUGE POUR DONNER VENT MOTEUR TRANSFOR MATEUR NOIR NOIR NOIR...

Page 73: ...ON LECTRIQUE MISE LA TERRE NOIR NOIR ROUGE ROUGE BLANC JAUNE BLEU VIOLET CONTROLE HSI BRUN BLEU VERT VERT MISE LA TERRE VERT MISE LA TERRE VERT VALVE DE COMMANDE DE GAZ LIMITEUR INTERRUPTEUR BRUN BRUN...

Page 74: ...LEU VERT VERT ALLUMEUR THERMOSTAT OPTIONEL MISE LA TERRE DU BRULEUR OBTURATEUR VERT MISE LA TERRE CONTROLE HSI POUR DONNER VENT MOTEUR INTERRUPTEUR DE S LECTION CHALEUR FERMETURE VENT BLANC POUR DONNE...

Page 75: ...RE VERT ROUGE VALVE DE COMMANDE DE GAZ MISE LA TERRE VERT NOIR ROUGE BLANC NOIR BLANC JAUNE NOIR BLANC BLANC BLANC BLANC BLANC BLANC NOIR NOIR NOIR NOIR BRUN BRUN LIMITEUR INTERRUPTEUR INTERRUPTEUR DE...

Page 76: ...6 5 7 9 10 11 4 3 2 1 14 32 33 34 35 36 8 Item Description Standard Plus 1 R gulateur Gaz de Petrole Liqu fi s tape vent sur la sortie 550 06553 R gulateur Gaz de Petrole Liqu fi s tape vent lat ral 5...

Page 77: ...Limiteur interrupteur de surchauffe 573099 21 Enceinte chaude 572466 22 Capuchon interrupteur de s lection N A 571939 23 Interrupteur de s lection avec capuchon N A 571906 24 Bo tier de commande avec...

Page 78: ...30 Item Description Standard Plus 1 R gulateur Gaz Propane 550 06553 Gaz naturel 500 24414 2 Valve fermeture manuelle avec mamelon 500 03399 3 Tuyau po x 10 pi rigide et orientable 550 20714 4 Adapta...

Page 79: ...Bo tier de commande avec couvercle 572485 572487 25 Joint torique avec obturateur hublot 570002 26 Couvercle bo tier de commande 572483 572484 27 Relais moteur 570221 28 Commande de l allumage 509298...

Page 80: ...e de la facture sera exig e pour tablir l application ou non de la garantie La garantie nonc ci haut est la seule garantie offerte par L B White et ainsi toute autre garantie directe ou tacite commerc...

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