20
Appendix B
microTHERM CMX Open Loop to Closed Loop Cooling Conversion
Note: All warnings and cautions denoted
throughout this user’s manual also apply to the
modifications listed below. General instruc-
tions and specifications referring to the open
and closed loop systems apply to the field-
modified units below.
This sheet details the steps taken and material required
to convert a Chromalox CMX microTHERM hot water
system from open loop cooling to closed loop cooling.
The basic operation involves removing the flat plate
and replacing it with a heat exchanger bundle. Please
contact the Chromalox Customer Service department
(1-800-368-2493) for more information and to order the
necessary materials.
New Material Required
1.
1/4” NPT Tee
1 piece
299-122818-001
2.
1/2” NPT Tee
1 piece
299-122818-003
3.
1/4” NPT x 7/8” Nipple
1 piece
198-122817-002
4.
1/2” NPT x 3” Nipple
1 piece
198-122817-090
5.
1/2” NPT Street Elbow
1 piece
107-114567-005
6.
Bush Reducer 1/2” x 1/4”NPT
2 pieces
032-121003-005
7.
Compression Fitting, 1/4” NPT x 3/8” tube
2 pieces
119-114570-001
8.
Tubing 3/8” copper
2 Feet
318-511965-001
9.
Gasket
1 piece
132-146012-020
10.
Heat Exchanger Tube Bundle
1 piece
353-123367-002
11.
1” NPT Pipe Plug
1 piece
218-075439-066
12.
Labels
1 piece
170-122103-040
Replacement Steps
Figures 1, 2, 3 and 4 show the layout of the cooling configuration for both closed and open loop cooling. These
parts are located on the top of the cooling chamber. Use pipe tape or other sealing compound when attaching
threaded connections.
or
Figure B1 - Closed Loop Cooling
Figure B2 - Open Loop Cooling
Note:
Refer to Figures 3 and 4 for location of components.
Thermal Devices, Inc. Mount Airy, Maryland USA www.thermaldevices.com
Thermal Devices, Inc. Mount Airy, Maryland USA www.thermaldevices.com