Frequently Asked Questions (9) Why is my Suburban SF Series furnace not igniting? If the furnace does not ignite after three attempts, you should shut down the unit and contact your dealer or a local recreational vehicle service agency. For more information, see page 6 of the manual.. The Suburban gas furnace must be completely shut down if signs of overheating or gas supply failure occur. To do this, first, shut off the manual gas valve to the furnace.
INSTALLATION INSTRUCTIONS tion of this appliance must be made in accordance with the written instructions provided in this manual. No agent, representative or employee of Suburban or other person These furnaces are designed and installed in such a manner as to be removable only from the exterior of the recreational vehicle.. Suburban SF-35 Pdf User Manuals. View online or download Suburban SF-35 Service Manual, Installation Instructions Manual, User's Information Manual