Specifications

66
stcudorP retaW htimS .O .A Service Workbook
Ashland City, Tennessee 2005© Training Department
START-UP INSTRUCTIONS FOR
GENESIS MODELS GB, GW, GBO AND GWO,
SERIES 200 AND 201
Page 2 of 2
STEP 3: START-UP RECORD AND DISPOSITION
STATEMENT OF COMPLIANCE
I, the undersigned, certify that the water heater listed and described above has been started in accordance with this form and the literature
provided and that all measured values and requirements are within the manufacturer’s specifications.
________________________________________________________ _______________________________________________________
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A.O. Smith Water Products Co.,Inc. 5621 W. 115th Street / Alsip, Illinois 60803 Phone [phone] Fax [phone]
www.hotwater.com
Once flame characteristics are now correct, record the following values
for the unit:
Gas supply pressure _________________ inches W.C.
Manifold pressure _________________ inches W.C.
CO
2
reading at full input
CO reading at full input
O
2
reading at full input
Temperature setting
Water
Blower Amp Readings
Main Supply Amp Reading
Allow the unit to run until the system is satisfied and the unit shuts off.
Measure the water temperature at the outlet: _______________.
Shut down heater as described in the instruction manual. Reinstall all
regulator plugs and insure that pressure settings do not change as the
plugs are installed. Seal regulator plugs with fingernail polish or model
paint. Mark the adjustment of air shutters using a magic marker and seal
adjustment screws with nail polish or model paint.
Remove the hoses and tees used to test blower pressure, if used, and
make sure that hoses are correctly run from air chamber tap to the positive
pressure tap on the differential pressure switch.
RECORD STAGE DIFFERENTIAL SETTINGS
(See Instruction Manual for additional
information.)
Stage #1 Differential: _____ Off Temp: ______ On Temp: _____
Stage #2 Differential: _____ Off Temp: ______ On Temp: _____
Stage #3 Differential: _____ Off Temp: ______ On Temp: _____
Stage #4 Differential: _____ Off Temp: ______ On Temp: _____
DISPOSITION
All tests and values specified must pass prior to issuing this Start-Up
Certificate. For any of the failed tests, explain below what was done to
correct the problem. Also, explain what was done to correct any combustion
problems.
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NOTIFICATION (When applicable)
The owner has been notified that corrections must be made to this installation.
The owner acknowledges that changes must be made within
30 60 90 (circle one) days.
_________________________________ ______________________
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Blower and Air Shutter Setting and Adjustment
Note: The blowers are factory pre-set and shouldn’t require adjustment.
The Genesis II units are equipped with multiple blowers; 2 blowers
are used on 3-stage units and 3 blowers are used on 4-stage
units.
All blowers must be running while balancing. Pressure gauge/manometer
should be placed at each blower:
• Remove the ¼” hose from the positive pressure taps on the differential
pressure switches. There will be two switches on the 1000 thru 1500
models and three switches on the 1850 thru 2500 models.
• Run this section of ¼” hose from the air chamber tap on the control
panel to one side of one of the three tees you brought with you.
• Run another section of ¼” hose from one of the open taps on the tee
to the positive pressure tap on the differential pressure switch.
• Run another section of ¼” hose from the last open tap on the tee to the
gauge or manometer.
Once blowers have been adjusted to the proper settings, adjust the air
shutters to obtain a “Normal Flame”; that is, a flame that is blue with no
yellow tipping and that sits approximately 1/8” (3mm) above the burner
deck. Secure the shutters in position.
Burner Characteristics
Check the burner operating characteristics:
A. Normal Flame
A normal flame is blue without yellow tips. The flame will sit
approximately 1/8” (3mm) above the burner deck (see figure 1). No
adjustment is necessary if Normal Flame is observed. Skip the
following and go immediately to Step three.
B. Yellow Tips or Yellow Flames
Yellow tips or yellow flames are caused by a lack of air to the
burner. If Yellow tips or yellow flames are observed:
i. Check manifold pressure setting and correct if not properly set.
ii. Check burners and air intake for blockage and clear.
iii. Check blower settings and air shutter settings. See instructions
below for setting blowers and adjusting air shutters.
C. Lifting Flames
Lifting flames are caused by overfiring the burners or excess air. If
Lifting flames are observed:
i. Check manifold pressure setting and correct if not properly set.
ii. Check blower settings and air shutter settings. See instructions
below for setting blowers and adjusting air shutters.
Figure 1
PRINTED IN U.S.A. 0701
Part No. 211365 Rev. 0
Blower #1 Blower #2 Blower #3
Water Temperature
Rise Across Unit