110547-01 - 4/20
9700609
Installation, Operating and Service Instructions for
FORCEVFO Residential Water
TO THE INSTALLER:
Affix these instructions adjacent to boiler.
TO THE CONSUMER:
Retain these instructions for future reference.
For service or repairs to boiler, call your heating contractor. When seeking information on boiler, provide
Boiler Model Number and Serial Number as shown on Rating Label.
• Water Boiler
• Natural Draft
• Oil-Fired
Models:
• FORCEVFO-3-075E
• FORCEVFO-3-100E
• FORCEVFO-4-120E
• FORCEVFO-4-150E
• FORCEVFO-5-175E
• FORCEVFO-5-190E
Manual Contents Page
1. Dimensional Description, Specification &
Dimensional Data .....................4
2. Pre-installation .......................8
3. Packaged Boiler Assembly ............10
4. Water Boiler Piping & Trim .............11
5. Tankless & Indirect Water Heater Piping ..15
6. Venting ............................17
7. Electrical ...........................20
8. Oil Piping ...........................23
9. System Start-Up .....................25
10. Operating ..........................28
11. Maintenance & Service ...............34
12. Boiler Cleaning .....................36
13. Troubleshooting .....................38
14. Service Parts .......................40
15. Burner Specifications ................46
Appendix ..........................47
• FORCEVFOT-3-075E
• FORCEVFOT-3-100E
• FORCEVFOT-4-120E
• FORCEVFOT-4-150E
• FORCEVFOT-5-175E
• FORCEVFOT-5-190E
As an ENERGY STAR Partner, U.S. Boiler Company
has determined that the FORCEVFO-3-075E,
FORCEVFOT-3-075E, FORCEVFO-4-120E, and
FORCEVFOT-4-120E meets the ENERGY STAR®
guidelines for energy efficiency established by the
United States Environmental Protection Agency
(EPA).”
TM
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