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VERIFY SEqUENCE OF OPERATION
a detailed sequence of operation containing potential faults
can be found in Sections VII, "Detailed Sequence of Opera-
tion." Refer to this section and Section XVIII, "Service Hints,"
for more information.
INSPECT VENTING AND AIR INTAKE
Operate the boiler and verify that all vent/air intake connec-
tions are gastight and watertight. Repair any leaks immedi-
ately.
INSPECT CONDENSATE DRAIN AND
SYSTEM PIPING
Verify that condensate flows freely and all connections are
watertight. Repair any leaks immediately.
TEST IGNITION SYSTEM SAFETY SHUTOFF DE-
Remove front panel from appliance.
1.
Turn off manual gas ball valve.
2.
Set thermostat for a call for heat.
3.
Boiler begins normal sequence of operation.
4.
After approximately 30 seconds of pre-purge the appli-
5.
ance will attempt to light.
6.
after 4 seconds the gas valve closes and the control
retries 5 time, before entering lockout mode.
7.
to reset the control, follow the instructions in section iV
of this manual, "Putting The Boiler In Operation."
Return thermostat to previous setting.
8.
TEST AND ADjUST HIGH LIMIT CONTROL
While burner is operating, adjust setting on high limit control
below actual boiler water temperature. Burner should go off
while circulator continues to operate. Raise limit setting above
boiler water temperature and burner should reignite after pre
purge and igniter warm-up period. Set the high limit control
to at least 10°F above parameter 4 setting as described in
the separate "Parameter Guide" (P/N# 240006105). Maxi-
mum high limit setting is 200°F. Minimum high limit setting
is 100°F.
TEST LOW WATER CUT OFF
Disconnect the wire from the LWCO sensor probe.
1.
Set thermostat for call for heat.
2.
Boiler should not begin normal sequence of operation.
3.
Attach wire to the sensor probe.
4.
Return thermostat to previous setting.
5.
V - CHECKOUT PROCEDURES AND ADjUSTMENTS
VICE
TEST OTHER FIELD INSTALLED SAFETY CON-
TROLS (IF USED)
If the boiler is equipped with any additional safety controls,
test for operation as outlined by the control manufacturer.
Burner should be operating and should go off when controls
are tested. When safety controls are restored, burner should
reignite.
SET FIELD INSTALLED THERMOSTAT
HEAT ANTICIPATOR (IF USED)
For a single thermostat connected to the T-T screw terminals
on the low voltage terminal strip on the control board of the
boiler, the heat anticipator should be set at 0.1 amps. For oth-
er wiring configurations, refer to the instructions provided by
the thermostat manufacturer regarding heat anticipator ad-
justment. Cycle boiler with thermostat. Raise the thermostat
to the highest setting and verify boiler goes through normal
start up cycle. Lower thermostat to lowest setting and verify
boiler goes off.
BOILER ADjUSTMENT
NOTE: It is important that this appliance operate as speci-
fied in the table below. The following steps can be used to
verify that the appliance is operating in this range.
Check incoming gas pressure to the appliance using a pressure
1.
gauge with a resolution of 0.1" w.c. or better and a range from 0"
to at least 14" w.c. Close the gas shutoff inside the boiler jacket.
Locate the inlet pressure tap on the gas valve (see
open the inlet pressure tap screw ½ turn. Connect the positive
side of the gauge to the inlet pressure tap, then open the gas shut-
off. The gas pressure at high fire should read between 4" and 10"
w.c. for natural gas and between 10" and 14" w.c. for LP gas.
9
Figure #1
Gas valve
1) and
Figure
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