TBG-27_GB142 CSD-1 high temperature limit validation
Contents
1. Buderus Subject Instructions for High Limit Test Model GB142 GB162 Series Boilers CSD 1 field test proce 1 Run boiler at full load using the chimney sweep test mode dure for high temperature limit validation to meet jurisdictional Press and hold chimney sweep button until a decimal point requirements appears in the lower right corner of the screen 2 When the supply temperature has reached 176 F 80 C close down the isolating valves in the pump manifold assembly under the boiler Fig 2 pos 1 Introduction The GB142 GB162 boiler is protected against temperature issues through the UBA in combination with the supply return and high temperature limit sensors that are part of the boiler The UBA monitors a number of situations that are relevant to safe operation of the boiler including e Absolute sensor temperatures e Maximum temperature difference between sensors e Maximum temperature increases e Minimum temperature decreases The UBA also monitors the function of the sensors For example the UBA will respond when a sensor has broken down or when there is a short circuit situation Generally a 4C for UBA connection issue AY CY 4U CU 4P 4L for supply return or high limit sensors error code will display on the BC10 control Refer to the Service Manual furnished with t2. ange without notice BTC 435002104 C 03 2012 Buderus
3. he GB142 GB162 boiler for details ele Tue ekio Pump Pump The method of operating the boiler using the boiler control logic Group Group UBA and internal temperature sensor for supply return and high limit have been tested and certified by CSA International 3 After 3 to 5 seconds open them again but only partially 4 The boiler will then lockout shutdown and show a 4A 218 or 4L 220 error code because of excessive supply temperature A 2P error code temperature increase of safety sensor too high is also possible Also when the boiler senses too high a tempera ture difference between the supply and return sensors that is will provide an error code 5 When test is complete press and hold chimney sweep button until the decimal point disappears in the lower right corner of the screen Fully open the isolating valves in the pump manifold assembly and put the boiler put back into normal operation 1 109 8 7 Fig 1 Legend Logamatic BC10 Controller 1 Main switch 7 Under the cover a RC system E u a e ru S 2 DHW temperature knob controller can be installed FLED SDMW status 7 oa Sep Bosch Thermotechnology Corp 4 Display 9 Service Tool connector 50 Wentworth Ave 5 Space heating water 10 Service button Londonderry NH 03053 temperature knob 11 Chimney sweep button Tel 800 283 3787 Fax 603 965 7568 6 LED Heating system status 12 Reset button www buderus us Data subject to ch
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