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SUF SERVICE HANDBOOK
SERVICE CHECKLIST
Technical Training Department State Water Heaters
STC-077
40 Ashland City, Tennessee © 2004
SERVICE CHECKLIST
This is not intended to be and all-inclusive list of the problem 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?
If air intake is blocked will unit lockout?
yes no
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 SUF 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 SUF service calls.]