Thermal Solutions EVS SERIES - Main Burner

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Air Filter:
A. Perform a visual inspection of air lter and
replace as necessary.
1. Remove upper front panel.
2. Remove red tube from nipple on lter assembly.
3. Remove wing nut.
4. Remove lter assembly from boiler. For the
EVS-2000S-3000: to facilitate assembly
removal, loosen the two upper screws on the
lower front panel and lean the lower front panel
forward. Remove the blower lter front plate, if
necessary.
5. Remove foam pre-lter and wash with soap and
water.
6. Replace primary lter as necessary.
Pilot Flame:
A. Perform a visual inspection of pilot burner
ame.
1. Refer to the ame safeguard instruction manual
and conduct a pilot turndown test.
2. Observe pilot operation and record pilot signal.
Flame should be steady medium hard blue
clearly visible through sight glass.
B. Pilot Cleaning and Maintenance
1. Shut off gas supply and disconnect electrical
service.
2. Disconnect scanner, ignition electrode, loosen
and remove pilot gas line and combustion air line
from fan.
3. Remove mounting fasteners and pull pilot
assembly from heat exchanger.
4. Examine pilot electrode and set gap to 1/8” if
needed. Clean as required.
5. Reassemble in reverse order using a new gasket
available from Thermal Solutions.
Burner Flame:
A. Perform a visual inspection of main burner ame.
1. Observe main ame and record ame signal.
Flame should be steady deep orange in color
with dark blue checkerboard pattern throughout.
2. Main burner requires no cleaning or annual
maintenance
Main Burner:
A. When properly maintained and operated the burner
does not require servicing.
CAUTION
Do not attempt to remove or service burner.
Damage to the burner may result. Consult boiler
manufacturer.
B. When the air lter is not properly maintained, the
burner is susceptible of clogging. Check manifold
pressure during the purge cycle to test for clogging.
1. Install a pressure tting in the tapping on the gas
manifold valve inside the boiler.
2. Attach a pressure monitoring device to the
pressure tting.
3. Check the pressure while the boiler is in the
purge sequence.
4. If the measured pressure is considerably higher
than expected, consult factory.
Check Combustion and Safety Controls:
A. Check ame failure detection system with system
operating.
1. Pilot
a. Refer to the ame safeguard instruction
manual.
b. Manually close pilot fuel supply and
verify lock out of primary control.
2. Main Flame
a. Refer to the ame safeguard instruction.
b. Close manual main fuel shut off valve
and verify lockout of primary control.
Heat Exchanger:
A. Remove lower front jacket panel and check for
any signs of corrosion or leaks.
B. Remove pipe plugs in header and inspect inside
of copper tubes and header.
C. Flush boiler and mechanically remove any
scale.
D. INSPECTION AND CLEANING PROCEDURES