45
Installation and operation manual
–
DTHC-V4-2020
Perform the following verifications to the necessary prescribed frequency to keep the unit in good
working condition. Do not limit the inspection to this list as some environmental conditions may
require other or more frequent inspections.
Verification list
Recommended audit frequency
Weekly
Monthly
Semi-Annual
Annual
Make sure there are no flammable
materials near the unit
•
Make sure that the combustion air
inlet and flue vent are not blocked or
obstructed
•
Verify flame state and combustion
•
Verify that all safety control are
operational
•
Verify that high temperature limit
thermostat proper functioning
•
Make sure there’s no gas leak in the
burner and supply line
•
Inspect all electrical connection
•
Inspect flame sensor and igniter,
replace if necessary
•
Verify the burner installation and
tighten bolts and screws if necessary
•
PLC battery back-up replacement
2 Years
Check heat exchanger for cracks or
deformations.
•
Unit maintenance