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L. Testing Controls and Safety Devices
Prior to placing the boiler in operation, the installing contractor or other responsible personnel must perform
safety and control device limit tests to ensure proper operation of the appliance. Refer to Table 29 for
recommended method(s) of carrying out these safety limit devices tests.
Component
High Gas Pressure Switch
Low Gas Pressure Switch
Blocked Condensate
Switch
Vestibule Thermal Fuse
Low Water Cutoff
Manual Reset High Limit
Aquastat
Water Flow Switch
M. Ignition Failure
After the first ignition failure, the boiler goes into a hard lockout and a manual reset of the Concert Boiler Control
is required to restart the boiler. The boiler will then attempt to light off after it has completed its post-purge
process.
Contact the boiler manufacturer or a qualified heating service technician if the boiler has failed to light
consecutively three times after initially resetting the Concert boiler control.
50
Thermal Solutions, 1175 Manheim Pike, Lancaster, PA 17601 Website: www.thermalsolutions.com
Table 29: Safety Device Tests
Test Method(s)
Close the manual gas valve
between the gas valve and air
inlet. Cycle boiler.
Increase the setting of the
switch until the switch trips.
Disconnect one wire of the
blocked condensate switch.
Cycle the boiler.
Disconnect one wire of the
vestibule thermal fuse. Cycle
the boiler.
With the boiler running push
and hold the LWCO test
button until the boiler control
shuts down the main burner.
With the boiler running, lower
the setting of the Aquastat
until the boiler control shuts
down the main burner.
Reduce the water flow rate
with a manual shutoff valve
until the boiler shuts down.
Phone: 717-239-7642 Fax: 877-501-5212 Email: sales@thermalsolutions.com
After Lockout Annunciation
Manually reset the Concert
Boiler Control and switch.
Adjust the switch to its normal
setting.
Manually reset the Concert
Boiler Control and switch.
Adjust the switch to its normal
setting.
Re-connect wiring to the
blocked condensate switch.
Reset blocked condensate
switch lockout.
Re-connect wiring to the
blocked condensate switch.
Reset vestibule thermal fuse
lockout.
Manually reset the Concert
Boiler Control and reset the
LWCO.
Adjust Aquastat back to 200
and press reset.
Adjust manual valve to normal
position.
DANGER
DANGER
Actual Alarm Message
Hard Lockout. Gas Pressure
Switch
Hard Lockout. Gas Pressure
Switch
Hard Lockout Blocked Conden-
sate Switch
Hard Lockout Vestibule Ther-
mal Fuse
Hard Lockout. Low Water
Level
o
High Limit
Low Water Flow
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