A. O. Smith Water Products Company Service Handbook
Irving, Texas 2000
©
Training Department
37
SERVICE CHECKLIST
This is not intended to be an all-inclusive list of the problems that the Service Agent may encounter. Any item checked "no" on this
list should be thoroughly investigated and corrective action taken, if required.
SERVICE AGENT: __________________________ INSTALLATION DATE: __________________________
MODEL NUMBER: _________________________ SERVICE DATE: ______________________________
SERIAL NUMBER: _________________________ LOCATION ADDRESS: _________________________
PHONE ( ) ________ - _____________
GAS TYPE - CHECK ONE
NATURAL _____
PROPANE _____
PROPER GAS VALUE VERIFIED YES ___NO___
I. CHECK CLEARANCE (CIRCLE ANSWER)
A. Are exterior clearances adequate ______________________________________________ yes no
B. Are interior clearances adequate ______________________________________________ yes no
Comments: _______________________________________________________________
_______________________________________________________________
II. CHECK MAKEUP AIR REQUIREMENTS
A. Is the quality of make-up air adequate? _________________________________________ yes no
Comments: _______________________________________________________________
_______________________________________________________________
B. Is the quantity of make-up air adequate? ________________________________________ yes no
Comments: _______________________________________________________________
_______________________________________________________________
III. GAS PRESSURE (FILL IN BLANK) - ALL UNITS ON.
A. Supply gas pressure ___ inches of w.c. (flowing)
B. Manifold gas pressure (main burner) ___ inches of w.c. (flowing)
Comments: _______________________________________________________________
_______________________________________________________________
IV. VENTING (CHECK)
A. Acceptable equivalent footage ________________________________________________ yes no
B. Proper material ____________________________________________________________ yes no
C. Proper exterior installation ___________________________________________________ yes no
D. Condensate will drain _____________________________________________________ yes no
Comments: _______________________________________________________________
_______________________________________________________________
V. WATER PIPING
Is the system properly sized? ____________________________________________________ yes no
Is the system properly installed? _________________________________________________ yes no
Are there any water leaks? ______________________________________________________ yes no
Does the installation have a recirculating system? ___________________________________ yes no
If so, is it operational? __________________________________________________________ yes no
VI. SAFETY
A. Air
If exhaust is blocked will unit lockout? __________________________________________ yes no
If air intake is blocked will unit lockout? _________________________________________ yes no
B. Water Temperature
- Is the thermostat adjusted to the lowest acceptable temperature? __________________ yes no
- Does the installation have a mixing valve? _____________________________________ yes no
- If so, is it operational? _____________________________________________________ yes no
- What is the outlet temperature of the mixing valve?_______________________________ yes no
NOTE:
To minimize the risk of scalding, the manufacturer recommends storing water at 120°F.
Is a properly rated temperature and pressure relief valve installed? _____________________ yes no
Is there a properly installed expansion tank? ________________________________________ yes no
Should there be? ______________________________________________________________ yes no
C. Electrical
Is the 120 VAC electrical powers supply properly wired? (including polarity) ____________ yes no
Are all the BTH control covers in place? _________________________________________ yes no
Is the 120 VAC electrical power supply properly fused? ____________________________ yes no
D. Flammables
Are flammable materials located in the area of the water heater? or air intake? _________ yes no
Are flammable vapors located in the area of the water heater? or air intake? ___________ yes no
E. Gas
If the gas supply is reduced or turned off will the unit turn off? _______________________ yes no
Comments: _______________________________________________________________
_______________________________________________________________
[This service checklist may be photo copied to assist with BTH service calls].
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