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When the use of industrial antifreeze solutions is not possible, the system
must be operated to meet both of the following conditions.
1. Maintain sufficient flow rate through the coil.
2. Maintain sufficient heat load on the process fluid. Fluid exiting the
coil must be maintained at or above 7°C. Cycling of the recirculation
pump should not be used to control process temperatures.
Draining the coil is not acceptable as a normal method of freeze
protection—draining promotes corrosion inside the coil tubes. Drain-
ing is acceptable in an emergency if the coil is not protected by an
antifreeze solution.
It is recommended that you discuss your freeze prevention options with
your local Marley sales representative.
Operation
Note
Model
Coil Volume
Liters
Model
Coil Volume
Liters
MHF702__061 246 MHF705__061 890
MHF702__081 322 MHF705__081 1192
MHF702__101 397 MHF705__101 1476
MHF702__121 473 MHF705__121 1760
MHF702__062 284 MHF705__062 1079
MHF702__082 379 MHF705__082 1438
MHF702__102 454 MHF705__102 1779
MHF702__122 568 MHF705__122 2139
MHF703__061 322 MHF706__061 1476
MHF703__081 435 MHF706__081 1893
MHF703__101 530 MHF706__101 2309
MHF703__121 644 MHF706__121 2744
MHF703__062 379 MHF706__062 1798
MHF703__082 492 MHF706__082 2309
MHF703__102 625 MHF706__102 2839
MHF703__122 757 MHF706__122 3350
MHF704__061 606 MHF707__061 1703
MHF704__081 795 MHF707__081 2196
MHF704__101 984 MHF707__101 2688
MHF704__121 1173 MHF707__121 3180
MHF704__062 719 MHF707__062 2158
MHF704__082 946 MHF707__082 2801
MHF704__102 1192 MHF707__102 3426
MHF704__122 1420 MHF707__122 4054