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DRISTEEM GTS HUMIDIFIER INSTALLATION AND OPERATION MANUAL
BURNER ASSEMBLIES AND HEAT EXCHANGER TUBES
This is not a regular maintenance item, but if the heat exchanger tubes contain carbon deposits, soot, or other residue,
clean as follows:
1. Follow shutdown procedure on page 15.
2. Remove front door of humidifier.
3. Disconnect wiring to blowers, flame sensors, gas valves, and ignition controllers. Remove burner assemblies (each
assembly is mounted with four bolts).
4. Remove vent box.
5. Use a 150 mm flue brush with a 600 mm extension and reversible drill. Work brush in and out of all combustion
chambers.
NOTE
: To ease reassembly, disconnect components from one burner assembly at a time, and clean each
corresponding combustion chamber individually.
6. Remove loose deposits and residue that falls into rear header with vacuum cleaner and hose extension.
7. Inspect DN40 return tubes. Clean if necessary.
8. Run thin brush between turbulator and tube wall on all four sides.
9. Reinstall burner assemblies and gaskets, vent box and gasket, all electrical wiring, humidifier front door, and
pressure switch connections.
BURNER MAINTENANCE FREQUENCY
Under normal use conditions, the burner(s) should not need cleaning for a minimum of fi ve years. However, depending
on the operating environment, the burner(s) may require periodic cleaning to remove accumulated materials. Failure
to clean burners can result in reduced humidifi er capacity. Use sealed combustion in dirty environments. See burner
maintenance instructions below.
BURNER MAINTENANCE INSTRUCTIONS
To service the burner assembly, clean both the blower and the burner. Remove the blower(s) from the system, and clean
dust from the wheel.
Remove the burner(s) for cleaning.
Removing and cleaning one burner at a time eases reassembly.
To dislodge particulate matter from the burner surface matrix, use compressed air (700 kPa maximum). Keep the air
nozzle about 50 mm from the burner’s surface, blowing air perpendicular to the burner surface while moving the nozzle
back and forth lengthwise. This dislodges particles trapped in the matrix, pushing them back inside the burner.
NOTE:
Avoid blowing air across the surface, which tends to have a destructive effect on the burner surface. Allow
particulate matter to fall from the burner through the air/gas inlet. To assist in removing the particulate matter, use
a vacuum at the burner’s air/gas inlet.
Inspection recommendations