A.O. Smith 500 - Manual
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Table of Contents:
- Page 3 – LIGHTING INSTRUCTIONS; WARNING; Some local codes; TEMPERATURE REGULATION; DANGER; Table 1: Risk of Scalds; BOILER LOCATION
- Page 4 – BURNER SYSTEM; The burners should display the following characteristics:; CHEMICAL VAPOR CORROSION; CAUTION; Inputs To CCB and FCB:; • Temperature Sensors:
- Page 8 – Line Polarity Indicator & Fuse Protection; Igniters
- Page 10 – Temperature Setpoints (System Control Algorithm); Stages 1 and 2 will turn on in sequence from 1 to 2.; UIM Operating Procedures
- Page 11 – Description of CCB control states:; Status Displayed
- Page 12 – One hour passes (Soft fault automatic restart after one hour); Description of FCB control states:; cold purging) the system switches to the Heat Igniter State.
- Page 16 – UIM Touch Switches; UIM LED’s
- Page 17 – TROUBLESHOOTING IGNITION SYSTEM; Fault Displayed
- Page 20 – NOTES
- Page 23 – NEW BOILER LIMITED WARRANTY
1
A DIVISION OF A. O. SMITH CORPORATION
MC BEE, SC., RENTON, WA.,
STRATFORD-ONTARIO, VELDHOVEN-THE NETHERLANDS
w w w.hotwater.com
GAS-FIRED COMMERCIAL
COPPER BOILERS FOR HYDRONIC
HEATING AND HOT WATER SUPPLY
USER'S INFORMATION MANUAL
GB/GW-300, 400, 500, 650, 750
SERIES 400, 401, 402, 403, 404, 405,
2-STAGE UNITS
WARNING
Should overheating occur or the gas supply fail to shut off, do
not turn off or disconnect the electrical supply to the pump.
Instead, shut off the gas supply at a location external to the
appliance
.
PLEASE KEEP THESE INSTRUCTIONS ADJACENT TO BOILER AND
NOTIFY OWNER TO KEEP FOR FUTURE REFERENCE.
PART NO. 212132-001
PRINTED IN U.S.A. 0306
INDEX
PAGE
LIGHTING INSTRUCTIONS ....................................... 2-3
MAINTENANCE .......................................................... 3-4
OPERATING SEQUENCE, EMC5000 ......................... 8-14
CONNECTION DIAGRAM ............................................ 13
EMC5000 INSTRUCTIONS ...................................... 14-18
WARRANTY ................................................................. 19
WARNING
Do not use this boiler if any part has been under water.
Immediately call a qualified service technician to inspect the
boiler and to replace any part of the control system and any
gas control which has been under water.
CAUTION
T E X T P R I N T E D O R O U T L I N E D I N R E D C O N TA I N S
INFORMATION RELATIVE TO YOUR SAFETY. PLEASE READ
THOROUGHLY BEFORE INSTALLING AND USING THIS
APPLIANCE.
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;
d o n o t u s e a n y p h o n e i n y o u r
building.
• Immediately call your gas supplier
from a neighbor’s phone. Follow the
gas supplier’s instructions.
• I f y o u c a n n o t r e a c h y o u r g a s
supplier, call the fire department.
— Installation and service must be
performed by a qualified installer,
service agency or the gas supplier.
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Summary
3 LIGHTING INSTRUCTIONS These models have an automatic hot surface ignition systemmounted on the combustion chamber panel inside the frontjacket. This hot surface igniter ignites the main burner gaswhenever the system control calls for heat. Before proceeding with operation of the unit, make sure th...
4 the surrounding air pressure. Inspection of the boiler and ventsystem is necessary to insure that flue gas leakage to thesurrounding area does not occur. Inspect the external surfaces of the vent system every 3 monthsfor corrosion and leakage. Inspect the vent terminations forc o r r o s i o n a n...
8 closed and everything else is in the proper state, a "call forheat" condition will be initiated. These leads should beshorted together, when a thermostat is not being used. If it isdesired that the thermostat control the temperature of theboiler, the operating setpoint of the system should...
