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Superior Fireplaces MHD 35 Series - User Manual

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- 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
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use
any phone in your building.
• Leave the building immediately.
• Immediately call your gas supplier from a neigh-
bor’s phone. Follow the gas supplier’s instruc-
tions.
• If you cannot reach your gas supplier, call the
fire department.
- Installation and service must be performed by
a qualified installer, service agency or the gas
supplier.
WARNING:
FIRE OR EXPLOSION HAZARD
Failure to follow safety warnings exactly could
result in serious injury, death, or property damage.
AVERTISSEMENT:
RISQUED’INDENDIE OU D’EXPLOSION
Le non-respect Des avertissements de sécurité
pourrait d’entraîner des blessures graves, la mort
ou des dommages matériels.
- Ne pas entreposer ni utilizer d’essence ni d’autres
vapeurs ou liquides inflammables dans le voisinage
de cet appareil ou de tout autre appareil.
- QUE FAIRE SI VOUS SENTEZ UNE ODEUR DE GAZ:
• Ne pas tenter d’allumer d’appareil.
• Ne touchez à aucan interrupteur. Ne pas vous servir
des téléphones se trouvant dans le bâtiment où
vous trouvez.
• Sortez immédiatement de bâtiment.
• Appelez immédiatement votre fournisseur de
gaz depuis un voisin. Suivez les instructions du
fournisseur.
• Si vous ne pouvez rejoindre le fournisseur de gaz,
appelez le service des incindies.
- L’installation et l’entretien doivent être assurés par
un installateur ou un service d’entretien qualifié
ou par le fournisseur de gaz.
INSTALLER: Leave this manual with the appliance.
CONSUMER: Retain this manual for future
reference.
Installateur : Laissez cette notice avec l’appareil.
Consommateur : Conservez cette notice pour
consultation ultérieure.
This appliance may be installed as an OEM installation in a manufactured home (USA only) or mobile home and
must be installed in accordance with the manufacturer’s instructions and the Manufactured Home Construction
and Safety Standard, Title 24 CFR, Part 3280, in the United States, or the Standard for Installation in Mobile
Homes, CAN/CSA Z240 MH, in Canada. This appliance is only for use with the type(s) of gas indicated on the
rating plate. A conversion kit is supplied with the appliance.
Cet appareil peut être installé comme du matériel d’origine dans une maison préfabriquée (É.-U. seulement)
ou mobile et doit être installé selon les instruc! ons du fabricant et conformément à la norme Manufactured
Home Construction and Safety Standard, Title 24 CFR, Part 3280 aux États-Unis ou à la norme CAN/CSA Z240
Série MM, Maisons mobiles au Canada. Cet appareil doit être u! lisé uniquement avec les types de gaz indi-
qués sur la plaque signalé! que. Une trousse de conversion est fournie avec l’appareil.
Installation and Operation Instructions
Models
PFS
®
USC
Report No. F13-094
Ce manuel est disponible en francais, simplement
en faire la demande. Numéro de la pièce 900414-01.
P/N 900414-00 REV. C 12/2015
MHD 35/40 Series Direct-Vent Gas Fireplaces
MHD35DMN
MHD35DMP
MHD40DMN
MHD40DMP
P900414-00

Table of Contents

Questions and Answers

  • P
    Patrick ColeAug 27, 2025
    Why won't the pilot light stay lit on my Superior Fireplaces MHD 35 Indoor Fireplace?
    • D
      David RamirezAug 27, 2025
      If the pilot light on your Superior Fireplaces Indoor Fireplace won't stay lit after following the lighting instructions, it could be due to a defective pilot generator (thermocouple). Ensure the pilot flame is correctly impinging on the thermocouple. Clean and adjust the pilot for maximum flame impingement on the thermocouple. Also, make sure the connection between the valve and thermocouple is tight and secure.
  • M
    Mark PattersonSep 3, 2025
    What to do if my Superior Fireplaces Indoor Fireplace has frequent pilot/burner outages?
    • M
      michael94Sep 3, 2025
      Frequent pilot/burner outages in your Superior Fireplaces Indoor Fireplace could be due to a pilot flame that is either too low or too high (blowing), causing the pilot/valve safety to drop out. To resolve this, clean and/or adjust the pilot flame to ensure maximum flame impingement on the thermocouple.
  • B
    brittany38Nov 11, 2025
    What to do if the pilot is burning but there's no gas to the burner in my Superior Fireplaces MHD 35 Indoor Fireplace?
    • M
      Mathew BuckNov 11, 2025
      If the pilot is burning but there's no gas to the burner with the valve knob in the “ON” position and the burner switch ON, it could be due to several reasons. First, check the wall switch and wiring for secure connections. You can bypass the wall switch by using a jumper wire across the terminals; if the burner ignites, the switch is faulty and needs replacement. If the switch is not the issue, bypass the wall switch wires at the valve with a jumper wire; if the burner then ignites, the wiring or connections are faulty. Also, the thermopile might not be generating enough millivolts. Use a millivolt meter to check the thermopile terminals on the gas valve; the reading should be at least 325 millivolts with the optional wall switch OFF. Replace the thermopile if the reading is below this mi...
  • F
    fergusonkarinaNov 18, 2025
    How to fix a spark igniter that won't light the pilot on my Superior Fireplaces MHD 35 Indoor Fireplace?
    • K
      Kelli FisherNov 18, 2025
      If the spark igniter on your Superior Fireplaces Indoor Fireplace fails to light the pilot after repeatedly pressing the igniter button, several factors could be at play. Begin by checking for a spark at the electrode and pilot. If there's no spark and the electrode wire is properly connected, the igniter itself may be defective and require replacement. If there is a spark, try lighting the pilot with a match. If it lights, the issue might be an improper gas mixture; allow a longer purge period. If it still doesn't light, inspect the gap at the electrode and pilot, ensuring it measures about 1/8” for a strong spark. If the gap is correct, the pilot might need replacing. Also, verify that the gas supply pressure is within the limits specified on the rating plate. Lastly, a plugged pilot ori...

Superior Fireplaces MHD 35 Series Specifications

General IconGeneral
BrandSuperior Fireplaces
ModelMHD 35 Series
CategoryIndoor Fireplace
LanguageEnglish

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