I'm not sure if anyone has seen this, and I know this post is relatively old, however, here is the info and link the auber instruments manual for the Syl-2352 which covers how to wire the controller for both controlling your refrig/freezer AND heating with the same control:
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This is an example for beer fermentation. The refrigerator is driven by the
internal relay of the controller directly. Please note that the internal relay
output (terminals 7 and 8) is not powered by itself. A power supply must
be used to drive the external relay. The refrigerator must consume less
current than the internal relays maximum rating (7A at 240V AC and 10A at
120V AC). The bulb (less than 100-300 W) is for heating. The example is
setup to have the heater to turn on when temperature drops to below 60 °F
and turns off at 64 °F. The refrigerator will turn on when temperature is above
69 °F and turn off at 65 °F.
Set up for the controller
1) Hy = 2.0. Set both hysteresis band for heater and cooler to 2 degree.
2) COOL=9. Set the controller to cooling mode, no alarm suppression,
Fahrenheit temperature unit display.
3) AT=0. Set the controller main output to on/off control mode for refrigerator
compressor control
4) ALM2=62. Set the low limit alarm to 62 °F. Heater will be on at 60 °F
(ALM2-Hy) and off at 64 °F (ALM2+Hy)
5) SV=67. Refrigerator will be on at 69 °F (SV+Hy) and off at 65 °F (SV-Hy).
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http://auberins.com/images/Manual/Manual%20version%203.4.pdf
may provide some added functionality,
cheers!