Hussmann microSC GSVM A Series Installation & Operation Manual page 23

P/N 3109358_B
GSVM-4060A
GSVM-4072A
GSVM-5272A
The controller controls refrigeration temperature .
This is factory installed in the control panel . Adjust
the control to maintain the discharge air temperature
shown .
The factory defined setpoint is required to comply with
energy regulations such as from the Department of
Energy (DOE) . If for some reason, colder temper-
tures are required for customer specific products the
setpoint can be adjusted .
Discharge air temperatures should be measured at
the center of the discharge honeycomb .
Defrosts are time initiated and temperature
terminated . The defrost setting is factory set as
shown above .
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
25° - 28° F
(-3.8° to -2° C)
27° - 30° F
(-2.7° to -1.1° C)
31° - 34° F
(-0.5° to -1.1° C)
To ensure a thorough defrost, defrost must be
terminated by the temperature termination
setting — not by time .
The chart shown in the figure above describes
the opeation of GSVM-A models under ambi-
ent conditions that do not exceed 75°F and
Relative Humidity of 55% .
For the GSVM-A models, the controller
parameters defined from the factory has a
temperature differential of 19°F . Assuming
Set-Point is 21°F and the Differential is 19°F .
(Set-Point) 21°F + 19°F (Differential) = 40°F .
The compressor will cycle off 21°F and back
on at 40°F .
GSVM-A Open Vertical Merchandisers
3-7