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User's Information Manual
Models: 400, 500, 600, 725,
& 850
WARNING
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.
This appliance MUST NOT be installed in any location where
gasoline or flammable vapors are likely to be present.
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 supplier from a near by phone.
Follow the gas supplier's instructions.
• 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.
Save this manual for future reference.
FTXL-USER Rev A
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Table of Contents
Related Manuals for FTXL 850
Summarization of Contents
Hazard Definitions
DANGER
Indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.
WARNING
Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.
CAUTION
Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury.
NOTICE
Indicates special instructions on installation, operation, or maintenance important but not related to personal injury.
Please Read Before Proceeding
Boiler Service and Maintenance Safety
Guidelines to avoid electric shock and severe burns during maintenance procedures.
Boiler Operation Safety
Instructions for safe operation, including gas smell and flood precautions.
Boiler Water and Freeze Protection
Advice on water quality, sediment, and appropriate freeze protection fluids.
Prevent Combustion Air Contamination
Corrosive Contaminants and Sources
Lists products and areas that contaminate combustion air, causing boiler damage.
Maintenance Schedule
Service Technician Maintenance
General tasks for qualified service technicians, including annual startup checks.
Owner Maintenance Schedule
Daily, monthly, periodic, semi-annual, and end-of-season tasks for owners.
Maintenance Procedures
Boiler Inspection and Servicing
Procedures for inspecting and maintaining the boiler area and components.
Vent and Air Piping Checks
Inspecting flue gas vent and air inlet piping for blockages or leaks.
Condensate System Maintenance
Instructions for checking and flushing the condensate drain system and trap.
Air Vent and Relief Valve Checks
Procedures for checking air vents, testing low water cutoff, and operating relief valve.
Operating Instructions
Safety Before Operation
Critical safety warnings regarding fire, explosion, and gas detection.
Standard Operating Procedure
Step-by-step instructions for starting and operating the boiler.
Turning Off Gas to Appliance
Procedure for safely shutting off the gas supply to the appliance.
Smart System Control Module
Control Panel Overview
Description of the control panel layout and its keys/dials.
Access Modes and Saving Parameters
Explanation of user/installer access modes and how to save parameter settings.
Adjusting Operating Parameters
Guidance on setting the clock, temperature units, and setback overrides.
Set Points and High Limit Adjustments
Instructions for adjusting space heating, tank set points, and high limit settings.
Status Display Screens
Boiler Status Bar and Heat Indicators
Explanation of the boiler status bar and call for heat indicators.
Operational Information Displays
Details on system, tank, outdoor, and loop temperatures, plus I/O and BMS status.
History and Fault Screens
Information on run times, cycles, ignitions, and the last 10 faults.
Control Functions and Key Operations
Description of USB access, modify function, and shutdown/startup keys.
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