Users Guide

Contents—GF-125U
Contents
Warnings and Cautions 1
Emergency Shutdown 2
Prolonged Shutdown 2
Boiler & System Water 2
Chapter 1 Combustion Air 3
Prevention of Contamination 3
Potential Contaminating Products 3
Areas likely to have these products 3
Chapter 2 Maintenance Schedule 4
For the Service Technician 4
For the End User 4
Chapter 3 Maintenance Procedures 5
Daily Maintenance 5
Monthly Maintenance 6
Every 6 Months Maintenance 7
Chapter 4 Operating Instructions 9
Safety 9
TO TURN OFF GAS TO APPLIANCE 10
Operation 10
Standby Mode 11
Chapter 5 BOILER CONTROL DISPLAY 11
Setting Boiler Parameters 12
Accessing Boiler Information 13
Error (Hard Lockout) Mode 14
Boiler Freeze Protection Feature 14
Appendix A: Replacement Parts 15
Jacket Components 15
Internal Components 16
Burner Components 17
Electronic Components 18