Takagi GS-26W-AU5 User Manual

INSTALLATION GUIDE and
OWNER’S GUIDE
GAS WATER HEATERS
GS-20W-AU5/6
GS-26W-AU5/6
EXTERNAL INSTALLATION ONLY
WARNING
• DO NOT SPRAY AEROSOLS IN THE VICINITY OF THIS APPLIANCE WHILE IT IS IN
OPERATION.
• DO NOT USE OR STORE FLAMMABLE MATERIALS IN OR NEAR THIS
APPLIANCE.
• DO NOT PLACE ARTICLES ON OR AGAINST THIS APPLIANCE.
• DO NOT MODIFY THIS APPLIANCE.

Takagi GS-26W-AU5 Specifications

General

Brand	Takagi
Model	GS-26W-AU5
Category	Water Heater
Language	English

Summary

1. IMPORTANT

2. SPECIFICATIONS

6. SAFETY GUIDELINES

General Safety Instructions

Specific Hazard Warnings

7. INSTALLATION

Confirm Appliance Suitability

Verifying gas type, pressure, water pressure, and electrical rating for the application.

8. SELECTING AN INSTALLATION LOCATION

9. CLEARANCES FOR OUTDOOR HEATER LOCATIONS

10. GAS CONNECTIONS

Sizing and Connecting Gas Lines

Instructions on gas piping, connectors, purging, shut-off valves, and leak testing.

11. MEASURING GAS PRESSURE AND TESTING GAS LEAKAGE

12. WATER CONNECTIONS

Water Connection Guidelines

Use of suitable materials, shut-off valves, pressure limits, flushing, and filter cleaning.

13. ELECTRICAL CONNECTION

Electrical Connection Guidelines

Grounding, power supply requirements, weather-proof power point placement, and cord replacement.

17. INITIAL OPERATION

Safety Checks Before Operation

Checks for gas/water connections, pressure, venting, and handling gas smells.

Initial Startup Procedure

18. NORMAL OPERATION

Operation With Main Remote Controller

Operation With Multiple Remote Controllers

19. FREEZE PREVENTION

Winter Shutdown Procedure

20. MAINTENANCE AND SERVICE

Unit Draining and Filter Cleaning

21. GENERAL TROUBLESHOOTING

Water Temperature and Flow Issues

Remote Controller Troubleshooting

22. PCB ERROR CODE

Error Codes and Symptoms

23. WIRING DIAGRAM

24. DIP SWITCH SETTINGS

25. OPERATING SAFETY

Pre-Operation Safety Checks

Operating and Shutdown Procedures

26. WATER FLOW AND WATER TEMPERATURE