A.O. Smith 400A user manual

User manual for the device A.O. Smith 400A

Device: A.O. Smith 400A
Category: Water Heater
Manufacturer: A.O. Smith
Size: 0.68 MB
Added : 4/10/2013
Number of pages: 36
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Summaries

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Abstracts of contents
Summary of the content on the page No. 1

®
CYCLONE XHE Model BTH 300A AND 400A
COMMERCIAL GAS WATER HEATER
GAS-FIRED POWER BURNER
FOR DOMESTIC HOT WATER
• INSTALLATION • OPERATION • SERVICE • MAINTENANCE • LIMITED WARRANTY
WARNING: If the information in these
instructions is not followed exactly, a fire
or explosion may result causing property
damage, personal injury or death.
– 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

Summary of the content on the page No. 2

ROUGH-IN-DIMENSIONS GAS VALVE PIPING BTH-300 1 1/4" NPT BTH-400 1 1/4" NPT TABLE 1 RECOVERY CAPACITIES. U.S. Gallons/Hr and Litres/Hr at TEMPERATURE RISE INDICATED TYPE OF INPUT Approx. F° 20F° 30F° 40F° 50F° 60F° 70F° 80F° 90F° 100F° 110° 120F° 130F° 140F° MODEL GAS BTUH KW Capacity C° 11C° 17C° 22C° 28C° 33C° 39C° 44C° 50C° 56C° 61C° 67C° 72C° 78C° 300,000 130 US Gals. GPH 1782 1188 891 713 594 509 445 396 356 324 297 274 255 BTH-300 NATURAL 88 492 Litres LPH 6745 4496 3372 2698 2248 19

Summary of the content on the page No. 3

TABLE OF CONTENTS PAGE PAGE ROUGH-IN DIMENSIONS ................................................................... 2 Closed System ................................................................................ 13 FOREWORD ...................................................................................... 2 Water (Potable) Heating & Space Heating ...................................... 13 FEATURES ........................................................................................ 3 Heat

Summary of the content on the page No. 4

“AT A GLANCE” BTH 300/400 QUICK INSTALLATION TIPS Horizontal Sidewall Venting Vertical Rooftop Venting 4

Summary of the content on the page No. 5

The temperature may be adjusted from 80°F/27°C to 180°F/82°C. Valves for reducing point-of-use temperature by mixing cold and The thermostat was adjusted to 120°F/49°C before the heater hot water are available (see Figure 2). Also available are was shipped from the factory. It is recommended that lower water inexpensive devices that attach to faucets to limit hot water temperatures be used to avoid the risk of scalding. It is further temperatures. Contact a licensed plumber or the local plumbing

Summary of the content on the page No. 6

THE HEATER SHALL BE LOCATED OR PROTECTED SO IT IS CIRCULATING PUMP NOT SUBJECT TO PHYSICAL DAMAGE BY A MOVING VEHICLE. A circulating pump is used when a system requires a circulating loop or there is a storage tank used in conjunction with the heater. Refer to DO NOT LOCATE THE HEATER WHERE NOISE FROM THE the piping diagrams at rear of manual for electrical hookup information EXHAUST OR INTAKE WILL BE OBJECTIONABLE. THIS and install in accordance with the current edition of the National INCLUDES

Summary of the content on the page No. 7

SERIOUS DAMAGE TO THE HEATER AND RISK OF FIRE OR CLEARANCES EXPLOSION. IT CAN ALSO CREATE A RISK OF ASPHYXIATION. These heaters are approved for installation on combustible flooring in an alcove when the minimum clearances from any combustion UNCONFINED SPACE construction are followed as indicated in Figure 4. In all installations the minimum combustible clearances from any In buildings of conventional frame, brick or stone construction, vent piping shall be 0". Vent piping passing through a com

Summary of the content on the page No. 8

US DIRECT VENT CAUTION TO PREVENT EXHAUSTING PRODUCTS FROM CIRCULATING TO THE AIR INTAKE IN WINDY/COLD AREAS, THE MAXIMUM PRACTICAL DISTANCE BETWEEN THESE TWO TERMINALS IS RECOMMENDED. CANADIAN DIRECT VENT FIGURE 5. 8

Summary of the content on the page No. 9

US HORIZONTAL VENT CAUTION TO PREVENT EXHAUSTING PRODUCTS FROM CIRCULATING TO THE AIR INTAKE IN WINDY/COLD AREAS, THE MAXIMUM PRACTICAL DISTANCE BETWEEN THESE TWO TERMINALS IS RECOMMENDED. CANADIAN HORIZONTAL VENT FIGURE 6. 9

Summary of the content on the page No. 10

Heater must be protected from freezing downdrafts during 3"x 4" 45° PVC ELBOW WITH INTAKE GUARD shutdown periods. WARNING NEVER OPERATE THE HEATER UNLESS IT IS VENTED TO THE OUTDOORS AND HAS ADEQUATE AIR SUPPLY TO AVOID RISKS OF IMPROPER OPERATION, FIRE, EXPLOSION OR ASPHYXIATION. FIGURE 7. VENT PIPE TERMINATION NOTE: Before installing venting, determine place of vent pipe WARNING termination. See Figure 5 and 6 before proceeding. WHEN THE UNIT IS TO BE SETUP AS A DIRECT VENT, THE INTAKE G

Summary of the content on the page No. 11

Slide the pipe through the wall and insert into coupling on the 2. The horizontal centerline of the intake vent terminal may not be other side of the wall, making sure that the vent terminal ends located lower than the horizontal centerline of the exhaust vent up pointed in the correct position. See Figure 10. terminal (see Figure 9). EXHAUST VENT TERMINAL FIGURE 9. INSTALLATION SEQUENCE For installations in the City of Los Angeles, California Category IV PVC Pipe such as that manufactured by

Summary of the content on the page No. 12

2. Drill a pilot hole approximately 1/4" (6 mm) outside of the marked minimum amount of pipe required for the exhaust venting circle. This pilot hole is used as a starting point for a saws-all or arrangement. The intake venting arrangement is certified to sabre saw blade. Cut around the marked circle staying use a minimum of 0-equivalent feet of 4-inch PVC pipe. approximately one quarter inch outside the line. (This will allow the vent pipe to easily slide through the opening). The resulting 4.

Summary of the content on the page No. 13

to close. The pressure switch is connected to the burner tap by a VENT PIPE PREPARATION piece of tygon tubing. This tubing must be connected in order for the switch to change the electrical contacts. The controller requires 1. INITIAL PREPARATION that the electrical contacts on this air flow switch be open before it will allow the blower to come on. See Figure 13. A. Make sure the solvent cement you are planning to use is designed for the specific application you are attempting. BLOCKED OUTLET

Summary of the content on the page No. 14

FIRE OR EXPLOSION. IF OVERPRESSURE HAS OCCURRED HOT SURFACE IGNITER SUCH AS THROUGH IMPROPER TESTING OF GAS LINES OR EMERGENCY MALFUNCTION OF THE SUPPLY SYSTEM THE The Hot Surface Igniter is a device that ignites the main burner by GAS VALVE MUST BE CHECKED FOR SAFE OPERATION. MAKE high temperature (>1800°F or >982°C). When 120VAC is applied SURE THAT THE OUTSIDE VENTS ON THE SUPPLY to the igniter, sufficient heat is generated to ignite the main burner. REGULATORS AND THE SAFETY VENT VALVES ARE

Summary of the content on the page No. 15

OR LESS, THE APPLIANCE NEED NOT BE DISCONNECTED, BUT FOR SAFE OPERATION OF THE WATER HEATER, THE RELIEF MUST BE ISOLATED FROM THE SUPPLY PRESSURE TEST BY VALVE(S) MUST NOT BE REMOVED OR PLUGGED. CLOSING THE MANUAL GAS SHUTOFF VALVE. In addition to the appliance relief valve, each remote storage tank BEFORE PLACING THE HEATER IN OPERATION, CHECK FOR which may be used in conjunction with this appliance shall also GAS LEAKAGE. USE SOAP AND WATER SOLUTION OR OTHER be installed with a properly sized,

Summary of the content on the page No. 16

2. Toxic chemicals, such as those used for boiler treatment, EMF OF RFI INTERFERENCE CAN CAUSE THE CONTROLLER shall NEVER be introduced into this system. TO MALFUNCTION. A HIGH QUALITY POWER CONDITIONER MUST BE INSTALLED IF THE ABOVE CONDITIONS EXIST. 3. This unit may never be connected to any existing heating MALFUNCTIONS CAUSED BY A POOR ELECTRICAL SUPPLY system or component(s) previously used with non-potable ARE NOT COVERED UNDER YOUR WARRANTY. water heating appliance. The controller is wire

Summary of the content on the page No. 17

be closed, and the blower will continue to run for approximately 10 seconds. The control will then return to step 2. 9. If a flame is confirmed, the control will enter the heating mode where it will continue heating the tank water until the setpoint temperature plus differential is reached. At this point, the gas valve is closed and the control enters the post-purge cycle. 10. The combustion blower will run for the duration of the post purge cycle to purge the system of all combustion gases. Wh

Summary of the content on the page No. 18

ERROR CODES Possible Cause Remedy The following Error Codes are external to the controller. 01 Pressure Switch Fail On, should be Off 1. No Input Power 1. Apply Power 11 Pressure Switch Fail Off, should be On 02 Ignition Fail after 3 attempts 2. Wiring Disconnected 2. Check all wiring 04 ECO Open 05 Temperature Probe Open 3. One or more wiring receptacles 3. Reconnect plugs on control, disconnected from control confirm all are fully seated 15 Temperature Out of Bounds < 30 degrees 25 Temperatur

Summary of the content on the page No. 19

Display Flashes “05” when button is pressed: Possible Cause Remedy 1. Temperature Probe wiring 1. Repair Wiring open 2. Defective probe 2. Replace probe Display Flashes “15” when button is pressed: Possible Cause Remedy CONTROL BAD, All LEDs Flashing 1. No water in tank and tank 1. The symptom does not in freezing conditions reflect a control problem FIGURE 22. 2. Water in tank above freezing 2. Temperature probe out of tolerance, replace temp. Possible Cause Remedy probe 1. Temp. Probe unplu

Summary of the content on the page No. 20

DO NOT USE THIS HEATER IF ANY PART HAS BEEN UNDER PRIOR TO START UP - REQUIRED ABILITY WATER. IMMEDIATELY CALL A QUALIFIED SERVICE INSTALLATION OR SERVICE OF THIS WATER HEATER REQUIRES TECHNICIAN TO INSPECT THE HEATER AND TO REPLACE ANY ABILITY EQUIVALENT TO THAT OF A LICENSED TRADESMAN IN PART OF THE CONTROL SYSTEM AND ANY GAS CONTROL THE FIELD INVOLVED. PLUMBING, AIR SUPPLY, VENTING, GAS WHICH HAS BEEN UNDER WATER. SUPPLY AND ELECTRICAL WORK ARE REQUIRED. LIGHT THE UNIT IN ACCORDANCE WITH THE


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