Table of Contents
Advertisement
Instruction Manual
hot water GeneratInG systeMs
VertIcal and horIZontal
Models hwG-140 thru hwG-1000
InstallatIon - operatIon - serVIce -
MaIntenance - lIMIted warranty
A DIVISION OF A. O. SMITH CORPORATION
RENTON, WASHINGTON
www.hotwater.com
asMe
Thank you for buying this water heater. We
appreciate your confidence in our products.
place these InstructIons adjacent to heater and notIfy owner to keep for future reference.
PRINTED 0610
315823-001
Advertisement
Table of Contents
Subscribe to Our Youtube Channel
Related Manuals for A.O. Smith HWG-140
Summary of Contents for A.O. Smith HWG-140
- Page 1 Instruction Manual hot water GeneratInG systeMs VertIcal and horIZontal Models hwG-140 thru hwG-1000 InstallatIon - operatIon - serVIce - MaIntenance - lIMIted warranty A DIVISION OF A. O. SMITH CORPORATION RENTON, WASHINGTON www.hotwater.com asMe Thank you for buying this water heater. We appreciate your confidence in our products.
-
Page 2: Safe Installation, Use And Service
safe InstallatIon, use and serVIce Your safety and the safety of others is extremely important in the installation, use, and servicing of this water heater. Many safety-related messages and instructions have been provided in this manual and on your own water heater to warn you and others of a potential injury hazard. -
Page 3: General Safety Information
General safety InforMatIon precautIons hydroGen Gas (flaMMaBle) DO NOT USE THIS APPLIANCE IF ANY PART HAS BEEN UNDER WATER. Immediately call a qualified service technician to inspect the appliance and to replace any part of the control system which has been under water. If the unit is exposed to the following, do not operate heater until all corrective steps have been made by a qualified service agency. -
Page 4: Table Of Contents
taBle of contents SAFE INSTALLATION, USE AND SERVICE........2 Thermal Expansion (Closed System) ........9 GENERAL SAFETY INFORMATION ..........3 ELECTRICAL DATA ................9 Precautions ................3 General ..................9 Hydrogen Gas (Flammable)............3 Branch Circuit ................9 TABLE OF CONTENTS ..............4 Control Circuits .................9 INTRODUCTION ................4 WIRING DIAGRAMS ..............10 Preparing for the Installation .............4 OPERATION ...................11 FEATURES, COMPONENTS, AND DIMENSIONS ......6... -
Page 5: Features, Components, And Dimensions
features, coMponents, and dIMensIons... -
Page 6: Typical Water Heater Trim
typIcal water heater trIM fIGure 3. typIcal steaM to water pIpInG fIGure 4. typIcal water to water 3 way pIpInG... -
Page 7: Approvals
approVals asMe Model and ratInG locatInG the new water heater facts to consIder aBout the locatIon Whether replacing an old water heater or putting the water heater in a new location, the following critical points should be observed. The water heater should be located: On a level surface. -
Page 8: Installation
InstallatIon requIred aBIlIty Installation or service of this hot water generator requires ability equivalent to that of a licensed tradesman in the field involved pipe fitting in the steam or boiler water is required. See Qualified Installer or Service Agency on page 2. teMperature-pressure relIef ValVe The Discharge Pipe: •... -
Page 9: Thermal Expansion (Closed System)
therMal expansIon steaM supply (steaM unIts only) This water heater is designed to use saturated steam. Superheated As water is heated, it expands (thermal expansion). In a closed steam, even small amounts, will cause some or all of the following: system the volume of water will grow when it is heated. -
Page 10: Wiring Diagrams
wIrInG dIaGraMs wIrInG dIaGraMs wIrInG dIaGraM - electronIcally actuated control ValVe fIGure 5 wIrInG dIaGraM - self actuated control ValVe fIGure 6... -
Page 11: Operation
operatIon General safety It is recommended that lower water temperatures be used to avoid the risk of scalding. It is further recommended, in all cases, that the water temperature be set for the lowest temperature which satisfies Never operate the heating coil without being certain the hot water your hot water needs. -
Page 12: Maintenance
MaIntenance Note: See AttAched veNdor INFormAtIoN For mAINteNANce oF compoNeNtS. General to drain the shell section down once a ear, refill it and drain it again. The heating coil should be inspected and cleaned of any scale or mineral deposits that may attach themselves to the heating surface. Once a month the temperature/pressure relief valve should be checked The heating surface may be cleaned. -
Page 13: Checklist
3. Remove sediment and scale from the tank bottom through the access water leakaGe Is suspected provided by the element opening or tank cleanout, if furnished. 1. Check to see if the drain valve is tightly closed. • The cold water inlet valve and drain valve may be opened to aid the cleanout process. -
Page 14: Troubleshooting
trouBleshootInG trouBle shootInG GuIde for hwG PROBLEM POSSIBLE MALFUNCTION SERVICE TO BE PERFORMED Dirty or fouled heating surface. Clean the heating surface. SLOW OR INADEQUATE HEAT RECOVERY Condensate may be held in coil. Check trap, air vent & vaccum breaker on heating coil. Check trap size and capacity, also the condensate piping to WATER HAMMER IN Flooded tube bundle. -
Page 15: Warranty
warranty A. O. Smith, the warrantor, extends the following LIMITED WARRANTY to the owner of this water heater: 1. THE TANK If the tank in this water heater shall prove upon examination by the warrantor to have leaked due to natural corrosion from potable water therein, during the first FIVE years after initial installation, the warrantor will supply a complete new A. -
Page 16: Notes
notes... - Page 17 notes...
- Page 18 notes...
- Page 19 notes...
- Page 20 A DIVISION OF A. O. SMITH CORPORATION RENTON, WASHINGTON Technical Support: 800 527-1953 Parts Department: 800 433-2515 www.hotwater.com...
Need help?
Do you have a question about the HWG-140 and is the answer not in the manual?
Questions and answers