Utica Boilers UB95M-200 Installationsanweisungen
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NOTE: To return the boiler to thermostat operation, perform the
above steps, but set parameter 34 so display shows [- - 00]
instead of [- - 04].
4. Exit code mode by pressing once.
TEST & VERIFY BOILER/CONTROL OPERATION
1. Follow the steps in the “Installation Manual” and “Con-
trol Manual and Operating Instructions” to test operation
of the boiler and its controls. To initiate a call for heat
you will have to operate the multiple boiler controller to
activate the boiler.
2. Verify the boiler modulates correctly by adjusting the
multiple boiler controller.
3. The control response to the 0-10vdc signal will be:
Boiler on for voltage above 0.5vdc.
Boiler at low fire at voltage between 0.5 and 1.8vdc.
Boiler at high fire at voltage of 10vdc.
Boiler modulates between high fire and low fire for
voltage between 1.8 and 10vdc.
TEST HAM ALARM CIRCUIT (IF USED)
IMPORTANT: The HAM will close the alarm relay
contacts on any hard lockout of the boiler control
module. It will not send an alarm on soft lockouts.
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1. With the boiler electrical power OFF, unplug one of
the electrical connectors to either the supply or return
temperature sensor.
2. Restore power to boiler and allow to cycle.
3. The boiler control module should enter a hard lock-
out, causing the HAM alarm relay to close. The remote
alarm should activate.
4. Disconnect boiler power and replace the sensor lead
removed in step 1.
5. Restore power and verify boiler operation before
leaving the jobsite.
REPLACE BOILER COMPONENTS
Replace all boiler components and boiler front jacket
panel.
WARNING
Replace boiler jacket front door after servicing.
The boiler front door must be securely fastened
to the boiler to prevent boiler from drawing air
from inside the boiler room. This is particular-
ly important if the boiler is located in the same
room as other appliances. Failure to keep the
door securely fastened could result in severe
personal injury or death.