FTXL-I-O - Installation & Operation Manual Models 400-500-600-725-850

Oct 25, 2026

Upload by Rizky

Installation & Operation Manual for FTXL-I-O boiler models 400, 500, 600, 725, and 850. Provides safety warnings and emphasizes that only qualified heating installers or service technicians may perform installation. Covers required steps in order, hazard definitions, and reference materials including the FTXL Service Manual. Includes detailed sections on boiler location, venting and combustion air, sizing and materials, sidewall and vertical direct venting, hydronic piping, gas connections, field wiring, condensate disposal, startup procedures, operating information, maintenance, and supporting diagrams.

LanguageEnglish

CategoryTechnology

FormatPDF

Pages84

Reading Time3 h 32 min

AccessFree to download

HAZARD DEFINITIONS

PLEASE READ BEFORE PROCEEDING

THE FTXL -- HOW IT WORKS

RATINGS

1. DETERMINE BOILER LOCATION

2. PREPARE BOILER

3. GENERAL VENTING

4. SIDEWALL DIRECT VENTING

5. VERTICAL DIRECT VENTING

6. HYDRONIC PIPING

7. GAS CONNECTIONS

8. FIELD WIRING

9. CONDENSATE DISPOSAL

10. STARTUP

11. OPERATING INFORMATION

12. MAINTENANCE

13. DIAGRAMS

Installation & Operation Manual Models: 400, 500, 600, 725, & 850 ⚠ WARNING This manual must only be used by a qualified heating installer / service technician. Read all instructions, including this manual and the FTXL Service Manual, before installing. Perform steps in the order given. Failure to comply could result in severe personal injury, death, or substantial property damage. Save this manual for future reference. FTXL-I-O_ 100059358_2000005000_Rev AC Contents HAZARD DEFINITIONS .................................................. 2 PLEASE READ BEFORE PROCEEDING ..................... 3 THE FTXL -- HOW IT WORKS .................................... 4-5 RATINGS .......................................................................... 6 1. DETERMINE BOILER LOCATION Provide Air Openings to Room .......................................... 9 Flooring and Foundation ................................................... 9 Residential Garage Installation .......................................... 9 Vent and Air Piping ............................................................ 9 Prevent Combustion Air Contamination ............................. 9 Corrosive Contaminants and Sources ............................. 10 Using an Existing Vent System to Install a New Boiler ... 10 Removing a Boiler from Existing Common Vent.............. 11 2. PREPARE BOILER Remove Boiler from Wood Pallet ..................................... 14 Gas Conversions ......................................................... 14-15 Model 400-500.......................................................... 14 Models 600-850 ........................................................ 15 3. GENERAL VENTING Direct Venting Options ..................................................... 16 Install Vent and Combustion Air Piping ........................... 17 Requirements for Installation in Canada .......................... 18 Sizing ............................................................................... 18 Min./Max. Combustion Air & Vent Piping Lengths ............ 18 Materials ............................................................................ 18 Optional Room Air ............................................................ 19 PVC/CPVC .................................................................. 20-21 Polypropylene................................................................... 22 Stainless Steel Vent ......................................................... 23 4. SIDEWALL DIRECT VENTING Vent/Air Termination-Sidewall................................... 24-27 Determine Location................................................ 24-26 Prepare Wall Penetrations..................................... 26-27 Multiple Vent/Air Terminations ......................................... 27 Sidewall Termination-Optional Concentric Vent ....... 28-30 5. VERTICAL DIRECT VENTING Vent/Air Termination-Vertical .................................... 31-32 Determine Location..................................................... 31 Prepare Roof Penetrations ......................................... 32 Multiple Vent/Air Terminations ......................................... 32 Vertical Termination-Optional Concentric Vent......... 33-34 Alternate Vertical Concentric Venting ......................... 35-36 6. HYDRONIC PIPING System Water Piping Methods......................................... 37 Low Water Cutoff Device ................................................. 37 Chilled Water System....................................................... 37 Freeze Protection Fluids .................................................. 37 General Piping Information .............................................. 37 Relief Valve Installation ................................................... 38 Near Boiler Piping Components....................................... 39 Circulator Sizing .....

FAQs

Who is allowed to use and follow this manual for installation?

The manual must only be used by a qualified heating installer or service technician. All instructions must be read before installing.

What is the manual’s required approach for installation steps?

Steps must be performed in the order given. Failure to comply can result in severe personal injury, death, or substantial property damage.

Which major topics are covered in the manual beyond installation basics?

The manual covers boiler location, venting and combustion air, sidewall and vertical direct venting, hydronic piping, gas connections, field wiring, condensate disposal, startup, operating information, maintenance, and diagrams.

Oct 25, 2026

Upload by Rizky