A.O. Smith VB-500 User Manual
Series 200/201
Hide thumbs
Also See for VB-500:
- Instruction manual (52 pages) ,
- Service handbook (74 pages) ,
- User manual (24 pages)
Table of Contents
Advertisement
Quick Links
GAS-FIRED POWER BURNER
COPPER BOILERS FOR HYDRONIC HEATING
AND HOT WATER SUPPLY
• Installation
• Operation
• Maintenance
• Limited Warranty
WARNING: If the information in this
manual is not followed exactly, a fire or
explosion may result causing property
damage, personal injury or loss of life.
— Do not store or use gasoline or other
flammable 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.
PRINTED 0411
USER'S MANUAL
MODELS:
VB/VW-500, 750 AND 1000
SERIES 200/201
500 Tennessee Waltz Parkway
Ashland City, TN 37015
www.hotwater.com
1
320857-000
Advertisement
Table of Contents
Troubleshooting
Related Manuals for A.O. Smith VB-500
Summary of Contents for A.O. Smith VB-500
-
Page 1: Limited Warranty
GAS-FIRED POWER BURNER COPPER BOILERS FOR HYDRONIC HEATING USER’S MANUAL AND HOT WATER SUPPLY • Installation MODELS: • Operation VB/VW-500, 750 AND 1000 • Maintenance SERIES 200/201 • Limited Warranty WARNING: If the information in this manual is not followed exactly, a fire or explosion may result causing property damage, personal injury or loss of life. -
Page 2: Safe Installation, Use, And Service
SAFE INSTALLATION, USE AND SERVICE The proper installation, use and servicing of this boiler is extremely important to your safety and the safety of others. Many safety-related messages and instructions have been provided in this manual and on your boiler to warn you and others of a potential injury hazard. -
Page 3: General Safety
GENERAL SAFETY... -
Page 4: Table Of Contents
CONTENTS SAFE INSTAllATIoN, USE, AND SERvICE .............................. 2 GENERAl SAFETY......................................3 TABlE oF CoNTENTS ....................................4 Installation Requirements for the Commonwealth of Mass ........................5 Wiring Diagram ......................................6-7 Schematic Diagram ......................................8 lighting and operating Instructions ................................9 Water Temperature Regulation..................................10 Control System ...................................... -
Page 5: Installation Requirements For The Commonwealth Of Mass
INSTALLATION REQUIREMENTS FOR THE COMMONWEALTH OF MASSACHUSETTS For all side wall terminated, horizontally vented power vent, direct vent, and power direct vent gas fueled water heaters installed in every dwelling, building or structure used in whole or in part for residential purposes, including those owned or operated by the Commonwealth and where the side wall exhaust vent termination is less than seven (7) feet above finished grade in the area of the venting, including but not limited to decks and porches, the following requirements shall be satisfied: INSTALLATION OF CARBON MONOXIDE DETECTORS At the time of installation of the side wall horizontal vented gas fueled... -
Page 8: Schematic Diagram
VB/VW-500, 750 & 1000 SCHEMATIC DIAGRAM FIGURE 1. - SCHEMATIC DIAGRAM... -
Page 9: Lighting And Operating Instructions
LIGHTING & OPERATION INSTRUCTIONS FOR MODELS VB/VW 500, 750 AND 1000:... -
Page 10: Water Temperature Regulation
The boiler should be located in an area that is inaccessible to the general public. TABLE 1. Risk of Scalds. Time to Produce 2nd & 3rd Degree Water Temperature Burns on Adult Skin over 170°F (77°C) Nearly instantaneous 160°F (71°C) About 1/2 second 150°F (66°C) About 1-1/2 seconds... -
Page 11: Operating Sequence
sequences and safety features associated with a gas ignition Pump (MCB - 120vAC - required on systems that do not have an external pump): Provides electrical power to directly operate a control system. The system continuously performs various pump or the coil of an externally connected contactor. diagnostic tests to verify proper appliance and control operation. -
Page 12: Uim Operating Procedures
the temperature is less than the operating setpoint minus the The UIM receives commands from the user and displays operational differential temperature and the thermostat input is closed then information to the user via an lCD (liquid crystal display) up to eleven a call for heat is established and the system shifts to the run LED’s, and five touch switches. The LCD provides information to mode (green “Running”... - Page 13 waits for a heat request (determined by the Thermostat or remain in this state until the MCB request a heating cycle, controlling probe inputs). All outputs are off in this state or a cold purge. except that if the Post-Circulate time is set to continuous, • Pre-Purge State: the pump will be on.
-
Page 14: Operating Setpoint Adjustment Procedure
blower prover does not activate after 15 seconds. This time 5. Press the SElECT KEY. allows the blower relay to activate, the blower to come up to 6. Use the UP and DoWN key to select the value you wish to enter. speed, and the response from the blower prover to be filtered. - Page 15 kBtu rating of the boiler (0 to 5750kBtu in 10kBtu increments) From the Current Error Screen this key is used to reset the system from an error: The software revision level of the MCB. • Current Error Screen: • Up and Down Keys: Displays the last error that the system has detected plus These keys are used to move upwards and downwards in a time stamp of when the error occurred.
-
Page 16: Troubleshooting Ignition System
TROUBLESHOOTING IGNITION SYSTEM Fault Messages and lockout Status (* = stage number: 1, 2, 3, or 4) FAULT DISPLAYED DESCRIPTION RED LED LOCKOUT “Display Fail” Communications with UIM interrupted Continuous Auto Reset Check communication cable to UIM. Try moving to other Internal Communications connector on MCB. Also check the connectors where the cable is plugged in for best connecting wires. -
Page 17: Troubleshooting Gas Valve
PREVENTATIVE MAINTENANCE MAIN BURNER This is a pre-mix burner system. The flame is not supposed to be directly on the burner. The flame should be just above the burner Check main burner every three months for proper flame deck approximately 1/8” and blue in color, see illustration. characteristics. The main burner should display the following characteristics: • Provide complete combustion of gas. • Cause rapid ignition and carry over of flame across entire burner. • Give reasonably quiet operation during initial ignition, operation and extinction. • Cause no excessive lifting of flame from burner ports. -
Page 18: Relief Valve
COMBUSTION AIR FILTER If the combustion air supply to the boiler contains dust, dirt, drywall dust etc. a filter must be installed. An air filter is not supplied with the boiler as shipped from the factory. The installer must provide a filtering system in the air inlet to the boiler if dust, dirt or construction dirt can be pulled into the boiler through the inlet air piping. Periodically clean air filter per the manufacturer’s instructions. -
Page 19: Venting Maintenance
HEAT EXCHANGER PREVENTIVE lines with air or water and clear or replace the blocked portions MAINTENANCE of the line as necessary. Note that areas of the drain line which include a sag or low spot in the line will also form a condensate trap In most water supply systems solids exist. - Page 20 NOTES...
- Page 21 NOTES...
- Page 22 NOTES...
-
Page 23: Limited Warranty
LIMITED WARRANTY A. o. Smith Corporation, the warrantor, extends the following lIMITED WARRANTY to the owner of this boiler: 1. If within TEN years after initial installation of the boiler, a heat exchanger or gas burner shall prove upon examination by the warrantor to be defective in mate- rial or workmanship, the warrantor, at his option will exchange or repair such part or portion. - Page 24 500 Tennessee Waltz Parkway, Ashland City, TN 37015 Technical Support: 800-527-1953 • Parts: 800-433-2545 • Fax: 800-644-9306 www.hotwater.com...