Service Handbooks
Many of our current instruction manuals are available online for you to download to your computer or to print.
Miscellaneous
| Models Included | Description | File |
| General | Air Pressure Switch Technical Bulletin |  |
| General | Service Information Guide | |
| Commercial Heaters | A Technical Guide to Designing Energy-Efficient Commerical Water Heater Systems | |
| Tank Type Heaters | Why? When & How? To Remove Water Scale from Tank Type Water Heaters | |
Boilers
| Models Included | Description | File |
| VF Boiler VW/VB 500 thru 1000 | VF Service Handbook | |
| Dura-Max DB/DW 720 thru 1810 (1100) | Dura-Max Service Handbook | |
| Genesis GB300-2500 | Genesis Hydronic Engineering Manual | |
| Genesis GW/GB 200 thru 750 (0202) | Genesis Service Handbook | |
| Genesis (GW/GB) 1000 thru 2500 (Series 200 and 201 models) | Genesis Service Handbook | |
| Legend (LW/LB) 500, 750, and 1000 (997) (Series 920 and 951 models) | Legend 2000 Service Handbook | |
| Legend (LW/LB) 500, 750 and 1000 (303) (Series 980 - 991 & 300, 301) | Legend Service Handbook | |
| Deliming copper tube heat exchanger manual | Deliming Procedure | |
Commercial
| Models Included | Description | File |
| Cyclone Xi BTH 120 thru 500 (Series 100/101) |
Cyclone Xi Service Handbook | |
| BTH 120, 150, 199, 250 (Series 960 - 967, 970 - 973) Revision 6 (0500) |
BTH Service Handbook | |
| BTR with Effikal 120 thru 500 (Series 100 - 111) | BTR Service Handbook | |
| BTC 120 thru 500 | BTC Service Handbook | |
| BTI/BTN 120 thru 400(A) (0602) | BTI/BTN Service Handbook | |
| Models: BTF 75, BTI 80, BTI 100 |
Service Handbook for Light Commercial Power Vented Gas Products | |
| Cyclone Xi BTX-100 | Ultra High Efficiency Power Vent/Power Direct Vent Service Handbook | |
| Custom Xi DSE 5 thru 120 (Series 100-102) |
Custom Xi Service Handbook | |
| Gold Xi and Gold Series DVE and DRE 52 thru 120 (Series 100-102) |
Gold Xi and Gold Series Service Handbook | |
Residential
| Models Included | Description | File |
| Residential Gas and Electric Water Heaters (0402) | Service Handbook for Residential Gas & Electric Water Heaters | |
| FPS series 226-227 / FPSE 226E / FPD series 226-227 / FPS series 230-233 | Residential Power Vented Heater | |
| FPD, FPSE series 222-233 / FPS series 216-225 | Residential Power Vented Heater | |
| Models: FPST, FPSH 40/50, FPCR, FPD, FPSE 75, FPSH 75 |
Service Handbook for Power-Vented Residential Gas Products | |
| Vertex™ GDHE-50 | Ultra High Efficiency Power Vent/Power Direct Vent Service Handbook | |