25
a.
Simulate fl ame failure:
•
Follow the starting procedure to turn on the
burner.
•
Close the hand valve in the oil supply line.
•
Safety switch should lock out in
approximately 15 seconds. Ignition should
stop and oil valve should close. Blower will
stop after postpurge period.
•
Push red reset button to reset safety switch.
b.
Simulate ignition failure:
•
Follow the starting procedure to turn on the
burner, but do not open the oil supply hand
valve.
•
Safety switch should lock out in
approximately 15 seconds. Ignition and
motor should stop and oil valve should
close.
•
Push red reset button to reset safety switch.
c.
Simulate power failure:
•
Follow the starting procedure to turn on the
burner.
•
With the burner running, turn off the power
to the system by tripping the circuit breaker
or removing the fuse.
•
Burner should stop.
•
Restore power. Burner should start.
d. If system does not operate as described,
go to the TROUBLESHOOTING AND
MAINTENANCE section.
3. VERIFY HIGH LIMIT OPERATION.
a. Adjust thermostat to highest setting.
b. Observe temperature gauge. When temperature
is indicated, adjust limit to setting below
observed temperature. Burner should stop.
c. Adjust limit to setting above observed
temperature. Burner should start.
d. Adjust thermostat to lowest setting. Adjust limit
to desired setting.
4. CHECK LOW WATER CUTOFF (if so
equipped).
a. Adjust thermostat to highest setting.
b. With boiler operating, open drain valve and
slowly drain boiler.
c. Burner should stop when water level drops
below low water cutoff probe. Verify limit,
thermostat or other controls have not shut off
boiler.
d. Adjust thermostat to lowest setting. Refi ll boiler.
H.
Boiler is now ready
to be put into service.
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A leaky system will increase the volume of make-up
water supplied to the boiler which can signifi cantly
shorten the life of the boiler. Entrained in make-up wa-
ter are dissolved minerals and oxygen. When the fresh,
cool make-up water is heated in the boiler the minerals
fall out as sediment and the oxygen escapes as a gas.
Both can result in reduced boiler life. The accumula-
tion of sediment can eventually isolate the water from
contacting the steel. When this happens the steel in
that area gets extremely hot and eventually cracks. The
presence of free oxygen in the boiler creates a corro-
sive atmosphere which, if the concentration becomes
high enough, can corrode the steel through from the
inside. Since neither of these failure types are the result
of a manufacturing defect the warranty does not apply.
Clearly it is in everyone’s best interest to prevent this
type of failure. The maintenance of system integrity is
the best method to achieve this.
FOR HEATING SERVICEMAN ONLY
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Summary of Contents for microTEKDV
Page 14: ...14 Figure 10 Vent Installation Figure 11 Vent Connector Un Assembled ...
Page 15: ...15 Figure 13 Air Intake Installation Figure 12 Vent Connector Assembled ...
Page 19: ...19 Figure 15 Schematic Wiring Diagram ...
Page 30: ...30 Figure 20 microTEKDV Boiler Jacket Insulation ...
Page 31: ...31 Figure 21 microTEKDV Bare Boiler Assembly ...