Checking The Hot Surface Ignitor; Control - Buderus Logamax plus GB142-24 Installation And Servicing Instructions

Condensing gas heater
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14
Servicing
Check the cable between the plug and socket
connection and the 81-pole plug in the UBA3 instal-
lation base (see fig. 58) using a circuit continuity
testing device.
See the electric circuit diagram, fig. 25 on page 26.
Test this in a straight line twice and test it diagonally
twice.
Restore the plug and socket connection if the cables
are OK.
Install the UBA3.
Fit the casing.
Connect the heating system to the power supply,
insert the main fuse or switch on the circuit breaker.
Set the main switch on the BC10 to "1" (On).
14.10 Checking the hot surface ignitor;
Control
Disconnect the heating system from the power
supply, remove the main fuse or switch off the circuit
breaker.
Set the main switch on the BC10 to "0" (Off).
Remove the casing.
Disconnect the plug and socket connection of the hot
surface ignitor.
Set the measuring device to 120 VAC.
Connect the measuring device to the plug on the
cable harness.
Connect the heating system to the power supply,
insert the main fuse or switch on the circuit breaker.
Set the main switch on the BC10 to "1" (On).
Start up the appliance.
Test that during the ignition phase, while the oper-
ating code
is being displayed, 120 VAC is
measured.
Disconnect the heating system from the power
supply, remove the main fuse or switch off the circuit
breaker.
Set the main switch on the BC10 to "0" (Off).
Remove the measuring device.
Assemble the plug and socket connection of the hot
surface ignitor.
Fit the casing.
Connect the heating system to the power supply,
insert the main fuse or switch on the circuit breaker.
Set the main switch on the BC10 to "1" (On).
We reserve the right to make any changes due to technical modifications!
56
Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004
Fig. 58 UBA3 installation base
Buderus Hydronic Systems • http://www.buderus.net

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