INSTALLATION AND OPERATING INSTRUCTIONS FOR AUTOMATIC INSTANTANEOUS TYPE WATER HEATERS FOR USE WITH NATURAL AND LIQUEFIED PETROLEUM GAS
MODEL 125HX LP and 125HX NG
(Flow Modulated with Electronic Ignition)
Suitable for heating potable water only
Not approved for space heating purposes
Intended for variable flow applications with steady cold water inlet temperatures.
6 720 606 804 US (04.11) AL
WARNING: Improper installation, adjustment, alteration, service or maintenance can cause injury or property damage. Refer to this manual. For assistance or additional information consult a qualified installer, service agency or the gas supplier.
Upon completion of the installation, these instructions should be handed to the user of the appliance for future reference.
In the Commonwealth of Massachusetts this product must be installed by a licensed plumber or gas fitter.
WARNING
If the information in this manual is not followed exactly, a fire or explosion may result causing property damage, personal injury or death.
FOR YOUR SAFETY
Do not store or use gasoline or other flammable, combustible or corrosive vapors and liquids in the vicinity of this or any other appliance.
WHAT TO DO IF YOU SMELL GAS
-Do not try to light any appliance.
-Do not touch any electrical switch; do not use any phone in your building.
-Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions.
-If you cannot reach your gas supplier, call the fire department.
-Installation and service must be performed by a qualified installer, service agency or the gas supplier.
TABLE OF CONTENTS
Specifications | Page 3 |
Rules for safe operation | Page 5 |
Locating the Heater | Page 5 |
Combustion Air Requirements | Page 6 |
Mounting the Heater | Page 6 |
Venting the Heater | Page 7 |
Gas Connections | Page 9 |
Gas Piping | Page 10 |
Water Connections | Page 11 |
Safety before turning on the heater | Page 11 |
Operating instructions | Page 12 |
Setting water temperature | Page 12 |
Maintenance & Service | Page 13 |
Trouble Shooting | Page 13 |
Electrical Diagram | Page 15 |
Diagram of 125HX | Page 17 |
Interior components diagram | Page 18 |
Parts List | Page 19 |
Flowchart | Page 20 |
Warranty | Page 21 |