2
UGT Series Manual
Table of Contents
This is the safety alert symbol. This symbol alerts you to potential hazards that can kill or hurt you
and others.
Indicates an imminently hazardous situation which, if not avoided, will result in death or
serious injury.
Indicates a potentially hazardous situation which, if not avoided, could result in death or
serious injury.
Indicates a potentially hazardous situation which, if not avoided, could result in minor or
moderate injury. It may also be used to alert against unsafe practices.
DANGER
CAUTION
WARNING
Table of Contents ..................................................... 2
Safety Definitions ..................................................... 2
Safety Behaviors and Practices for the
Consumer and Installer ............................................ 3
Installation Instructions
(for the licensed professional) ............................. 4
Prepare for Installation ...................................... 5
Determine Installation Location ........................ 6
Checklist to Determine Installation Location ... 11
Mount to Wall .................................................. 11
Remove the Front Panel .................................. 11
Installation of Venting ...................................... 12
Condensate ...................................................... 14
Checklist for Venting and Condensate ............. 14
Installation of Plumbing ................................... 15
Checklist for Plumbing ..................................... 17
Installation of Gas Supply ................................ 17
Connect Electricity ........................................... 19
Adjust for High Altitude (U.S.) .......................... 19
Adjust for High Altitude (Canada) .................... 19
Adjust for Vent Length ..................................... 20
Checklist for Gas and Electricity ....................... 20
Installation of Temperature Controller ............ 20
Final Checklist ................................................... 22
Technical Data ........................................................ 23
Specifications ................................................... 23
Dimensions ....................................................... 24
Pressure Drop and Water Flow Curves ............ 25
Ladder Diagram ................................................ 26
Recirculation Mode .......................................... 27
Operation Instructions ....................................... 29
Consumer Operation Guidelines for the
Safe Operation of your Water Heater .............. 30
How to Use the Temperature Controller ......... 31
How to Set the Temperature ........................... 32
Diagnostic Codes .............................................. 34
Required Maintenance..................................... 37
Flushing the Heat Exchanger ..................... 39
Manual Draining of the Water Heater ...... 40
State Regulations .................................................... 41
Consumer Warranty ............................................... 42
Safety Definitions
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If you have any questions or feel that the manual is incomplete contact Giant at 1-800-363-9354
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