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This water heater design has been certified by the Canadian
Standards Association for installation in recreation vehicles. This
water heater is not for use in marine applications.
service calls & quesTions
Location and phone numbers of qualified Service Centers can
be found at our website http:/www.askforatwood.com or call
866.869.8116 to locate a Service Center.
safeTy alerT symbols
Safety Symbols alerting you to potential personal safety hazards.
Obey all safety messages following these symbols.
m
warning
avoid possible
injury or death
m
fIre Or exPlOsIOn
• If the information in this manual is not followed
exactly, a fire or explosion may result causing
property damage, personal injury or loss of life.
– Do not store or use gasoline or other flammable vapors
and liquids in the vicinity of this or any other appliance.
WHaT To Do if you smell Gas
• Evacuate ALL persons from vehicle.
• Shut off gas supply at gas container or source.
• DO nOT touch any electrical switch, or use any phone
or radio in vehicle.
• DO nOT start vehicle's engine or electric generator.
• Contact nearest gas supplier or qualified Service
Technician for repairs.
• If you cannot reach a gas supplier or qualified Service
Technician, contact the nearest fire department.
• DO nOT turn on gas supply until gas leak(s) has been
repaired.
– Installation and service must be performed by a
qualified installer, service agency or the gas supplier.
m
caution
avoid possible
injury and/or property damage
warning
literature number
•Installation •Operation •Maintenance
explanation of model number:
oD_____________________ on Demand
45________________ input in 1000's btu
01__________ Generation
m
criticaL inStaLLation warningS
• Install in recreation vehicles only. RV's are recreation vehicles
designed as temporary living quarters for recreation, camping,
or travel use having their own power or towed by another vehicle.
• All combustion air must be supplied from outside the RV, and all
products of combustion must be vented to outside the RV.
• DO NOT vent water heater with venting system serving another
appliance.
• DO NOT vent water heater to an outside enclosed porch area.
• Protect building materials from flue gas exhaust.
• Install water heater on an exterior wall, with access door opening to
outdoors.
• DO NOT modify water heater in any way.
• DO NOT alter water heater for a positive grounding system.
• DO NOT HI-POT water heater unless electronic ignition system
(circuit board) has been disconnected.
• DO NOT use battery charger to supply power to water heater even
when testing.
Do not install close to opening door or under room slide-out where
the vent or inlet louvers can be obstructed.
USA and Canada – Follow all applicable state and local codes. In the
absence of local codes or regulations, refer to the current standards
of:
— Local codes or, in the absence of local codes, the National Fuel Gas
Code, ANSI Z223.1/NFPA 54 and/or CSA B149.1, Natural Gas and
Propane Installation Code.
— Local codes or, in the absence of local codes, the Standard on
Recreational Vehicles, NFPA1192 and/or CAN/CSA-Z240 RV.
CUTOUT Requirements
OEM and Aftermarket – Unit can be installed in Atwood, Suburban and Girard
openings. Unit can also be installed through the wall from exterior, or prior to
erecting wall into place at OEM manufacturing facility.
Atwood 6 Gallon Opening
Suburban 6 Gallon Opening
Atwood 10 Gallon Opening*
Suburban 10 Gallon Opening*
1
MPD 90222
l.P. Gas
on DemanD
WaTer HeaTer
oD45, oD50, oD55
Effective 9.22.11
12.7 H x 16.25 W x 17.62 D
12.7 H x 12.7 W x 19.2 D
15.75 H x 16.2 W x 20.6 D
16.2 H x 16.2 W x 20.5 D
*Door/Adapter Kit Required
models

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Summary of Contents for Atwood MPD 90222

  • Page 1 CUTOUT Requirements • If you cannot reach a gas supplier or qualified Service OEM and Aftermarket – Unit can be installed in Atwood, Suburban and Girard Technician, contact the nearest fire department. openings. Unit can also be installed through the wall from exterior, or prior to erecting wall into place at OEM manufacturing facility.
  • Page 2: General Installation

    90 degrees along the lanced lines. mounting. Consult your Field Auditor, Account Manager, or the Atwood Service Department if you have additional questions. These steps assume the proper location has been determined Corner Brackets and is being installed at the OEM prior to erecting the walls.
  • Page 3: Pressure Relief Valve

    9. Place flue screen (from parts bag) over end of flue tube. This valve protects against excessive water expansion only. Place the access door on the lower flange pins aligning This water heater has separate and dedicated protection for the holes in the bottom of the door. Carefully close the top excessive heat.
  • Page 4: General Information

    Protection Kit. to the faucet. (If this is the first usage, you may have to...
  • Page 5 WATer HeATer PArTs lIsT iTem DescriPTion ParT # iTem DescriPTion ParT # Burner Assy (45,000 Btu) 90263 Orifice #72 (45,000 Btu) 90285 Burner Assy (50,000 Btu) 90264 Orifice #71 (50,000 Btu) 90286 Burner Mounting Bracket 90265 Orifice 0.27 (55K for PT#3392) Inquire Igniter 90266...
  • Page 6: Troubleshooting

    Most problems are easily remedied by consulting the trouble- there is water flowing and there are no obstructions in the shooting guide. If problems still persist, contact Atwood or an flue pipe. authorized service center. Only a qualified technician should do any work involving the gas system.
  • Page 7: Warranty

    This warranty extends to the original owner of the product only and is subject to the following conditions: 1. For a period of two years from the date of purchase, Atwood will replace the complete water heater if the heat exchanger Water Temperature is Too Hot or no Temperature leaks due to corrosion.
  • Page 8 intentionally left blank...
  • Page 9 MPD 90222 nUMÉrO De DOCUMenTATIOn cHauffe-eau au ProPane liquiDe À la DemanDe modèles oD45, oD50, oD55 FranÇaiS •Installation •fonctionnement •entretien En vigueur le 22.09.11 explication du numéro du modèle : La conception de ce chauffe-eau a été homologuée par l’Association canadienne de normalisation pour l’installation dans oD_____________________ À...
  • Page 10: Installation Générale

    Pour toute question supplémentaire, veuillez consulter votre vérificateur sur place, votre directeur de compte ou le service à la clientèle Atwood. Avant de commencer, assurez-vous que l’emplacement approprié a été déterminé et installé par le FEO avant l’érection des murs.
  • Page 11: Soupape De Décharge

    AverTIsseMenT InCenDIe eT/OU exPlOsIOn Adaptateur • NE PAS utiliser d’allumettes, de bougies ou d’autres sources d’allumage lors de la vérification des fuites de gaz. 12. Allumer le gaz et vérifier le chauffe-eau et toutes les connexions pour les fuites de gaz avec une solution pour détecter les fuites.
  • Page 12 • L’installation doit être conforme aux codes locaux ou, en ROUGE est le courant positif d’entrée de 12 V c.c. l’absence de codes locaux, la norme sur les véhicules VERT est la mise à la terre de 12 V c.c. récréatifs, ANSI A119.2 ou CAN/CSA-Z240RV.
  • Page 13: Informations Générales

    Pour l’utilisation continue à des la durée de votre douche. Le système d’eau chaude est conçu températures froides, veuillez contacter atwood concernant pour délivrer un flux continu et confortable d’eau chaude, et la trousse de protection contre le gel en oPTion.
  • Page 14 lIsTe Des PIÈCes DU CHAUffe-eAU arTicle DescriPTion nº De arTicle DescriPTion nº De PiÈce PiÈce Ens. brûleur (45 000 BTU) 90263 Orifice nº 72 (45 000 BTU) 90285 Ens. brûleur (50 000 BTU) 90264 Orifice nº 71 (50 000 BTU) 90286 Support de fixation du brûleur 90265...
  • Page 15: Dépannage

    Si le problème persiste, veuillez contacter 4. Vérifiez le trou du site pour voir si l’allumeur a une flamme Atwood ou un centre de service agréé. Seul un technicien qualifié qui se dirige vers le brûleur. Pliez le fil d’allumage pour devrait effectuer tout travail impliquant le système de gaz.
  • Page 16 5. Vérifiez si les évents de la porte du chauffe-eau et la remplacer le chauffe-eau. 2. Pour une période de deux ans à partir de la date d’achat, Atwood conduite d’air sont propres et exempts d’obstructions. réparera ou remplacera toute pièce défectueuse (défaut de matériau 6.
  • Page 17 4. Propane gas system pressure should be 11”w.c. while in operation. Be sure that LP tanks have plenty of gas and are properly regulated. This should be verified by an authorized Atwood service technician. For additional troubleshooting guidelines, please consult your owner’s manual MPD 90222.

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