| 3 |
Table of Contents |
|
Section I. Heater Identification Information | 4 |
Section II. Introduction | 5 |
Important Notices | 5 |
Warranty Information | 5 |
Code Requirements | 6 |
Consumer Information and Safety | 6 |
Section III. Installation | 7 |
Specifications | 7 |
Plumbing Connections | 8 |
Valves | 8 |
Manual | 8 |
Below Pool Installation | 8 |
Water Connections | 9 - 10 |
Gas Connections | 11 |
Sediment Traps | 11 |
Gas Pipe Sizing | 12 |
Testing Gas Pressure/Gas Pressure Requirements | 13 |
Indoor | 14 |
Indoor (USA) / Outdoor (Canada) Installations | 15 |
Combustion Air Supply | 16 |
Vent Adaptors | 16 |
Indoor Installations | 17 |
Outdoor Installations | 18 |
Outdoor Vent Kit | 18 |
Electrical Connections | 19 |
Wiring | 20 |
Section IV. Operation | 21 |
Basic System Operation | 21 |
HSI | 21 |
Safety Controls | 22 - 23 |
Digital Display Temperature Controller (DDTC) | 24 - 27 |
Section V. Troubleshooting | 28 |
Troubleshooting (DDTC) | 28 |
Troubleshooting (General) | 29 |
Service Checks - Ignition Module | 29 |
Section VI. Maintenance | 30 |
Maintenance Instructions | 30 |
Pressure Relief Valve | 30 |
Energy Saving Tips | 30 |
Spring, Fall and Winter Operation | 31 |
Chemical Balance | 32 |
Replacement Parts — NT LNw/DDTC | 33 - 34 |
Rev. E | P/N 472089 |