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  5. User Manual

A.O. Smith VF VB 1000 User Manual

Manual is about: SERIES 200/201 GAS-FIRED COPPER BOILERS FOR HYDRONIC HEATING AND HOT WATER SUPPLY

Summary of VF VB 1000

  • Page 1

    1 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 smel...

  • Page 2: Approvals

    2 safe installation, use and service approvals 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 pote...

  • Page 3: General Safety

    3 general safety.

  • Page 4: Contents

    4 safe installation, use, and service .............................................................................................................................................. 2 general safety..........................................................................................................

  • Page 5

    5 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 operatedbythecommonwealthandwherethesidewallexhau...

  • Page 6

    6 connection diagram.

  • Page 7

    7.

  • Page 8

    8 figure 1. - schematic diagram vb/vw-500, 750 & 1000 schematic diagram.

  • Page 9

    9 lighting & operation instructions for models vb/vw 500, 750 and 1000:.

  • Page 10

    10 the boiler should be located in an area that is inaccessible to the general public. Table 1. Risk of scalds. Water temperature time to produce 2nd & 3rd degree 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 140°f (60°c) le...

  • Page 11

    11 sequences and safety features associated with a gas ignition control system. The system continuously performs various diagnostic tests to verify proper appliance and control operation. Should an unsafe condition occur, the control will shut down the burner and display a red service light as well ...

  • Page 12

    12 the temperature is less than the operating setpoint minus the differential temperature and the thermostat input is closed then a call for heat is established and the system shifts to the run mode (green “running” led turns on). 5. The heating sequence begins by applying power to the pump. 6. Afte...

  • Page 13

    13 waits for a heat request (determined by the thermostat or controlling probe inputs). All outputs are off in this state except that if the post-circulate time is set to continuous, the pump will be on. When the heat request is received, the system moves to the pre-circulate state. • pre-circulate:...

  • Page 14

    14 blower prover does not activate after 15 seconds. This time allows the blower relay to activate, the blower to come up to speed,andtheresponsefromtheblowerprovertobefiltered. • usersettingsscreen: each setpoint or user setting has either a limited selection of values, or a limited range of values...

  • Page 15

    15 kbtu rating of the boiler (0 to 5750kbtu in 10kbtu increments) the software revision level of the mcb. • current error screen: displays the last error that the system has detected plus a time stamp of when the error occurred. (the time stamp is based on the elapsed hours value at the time the err...

  • Page 16

    16 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 co...

  • Page 17: Preventative Maintenance

    17 thisisapre-mixburnersystem.Theflameisnotsupposedtobe directlyontheburner.Theflameshouldbejustabovetheburner deck approximately 1/8” and blue in color, see illustration. Figure 3. - burner flames visually check flame characteristics through the view port located on the top head of the boiler. The ...

  • Page 18

    18 any safety devices including low water cutoffs used in conjunction with this boiler should receive periodic (every six months) inspection toassureproperoperation.Alowwatercutoffdeviceofthefloat typeshouldbeflushedeverysixmonths.Periodicchecks,atleast twice a year, should be made for water leaks. ...

  • Page 19

    19 lines with air or water and clear or replace the blocked portions 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 which can be removed by levelling the tube and does not indicate a blocked system. Inspect the...

  • Page 20: Notes

    20 notes.

  • Page 21: Notes

    21 notes.

  • Page 22: Notes

    22 notes.

  • Page 23: Limited Warranty

    23 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 ...

  • Page 24

    24 500 tennessee waltz parkway, ashland city, tn 37015 technicalsupport:800-527-1953•parts:800-433-2545•fax:800-644-9306 www.Hotwater.Com.