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Installation Manual
10.
Dry the TXV.
11.
It is recommended to insulate the TXV and liquid line.
12.
Connect and secure the TXV to the coil panel, Wrap a wet rag to prevent
overheating while brazing.Use a shield plate to prevent the copper pollution.
13.
Clean a straight section of the vapor line in original position. Use the straps
to secure the TXV sensing bulb on top of the vapor line as picture, about 45
degrees.
14.
Insulate the entire vapor line and sensing bulb. It is also recommended
to insulate the TXV and liquid line between the valve and coil to prevent
condensation in hot humid environments.
15.
Replace the front coil panel and secure in place. Follow the steps in the
installation guide for vacuum requirements and system start up procedures.
16.
Allow system to run for a minimum of 10 minutes in the cooling mode, charge
the system to 10degrees of subcooling, Adjust the expansion valve to achieve
9 (± 3 degrees) of superheat.
17.
Allow system to run for an additional 10 minutes to verify the subcooling and
superheat readings.
shield plate
Figure 11
Bosch Thermotechnology Corp. | 03.2017
Expansion Valve (TXV) Spare Parts
Cased Coil Model Number
Spare Parts Material Number - Expansion Valve (TXV)
BMAC2430ANTD
BMAC2430BNTD
BMAC3036ANTD
BMAC3036BNTD
BMAC3036CNTD
BMAC4248BNTF
BMAC4248CNTF
BMAC4248DNTF
BMAC4860CNTF
BMAC4860DNTF
Table 4
brazing
shield plate
Bosch Multi-Position Cased Coils | 15
8733948235
8733948235
8733948235
8733948235
8733948235
8733941929
8733941929
8733941929
8733941932
8733941932
brazing
Data subject to change
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