10
Refrigerant Type
The standard refrigerant will be R-22 unless otherwise
specified on the customer order. Check the serial plate on
the case for information.
Piping
The refrigerant line outlets are located under the case.
Locate first the electrical box, the outlets are then on the
same side of the case but at the opposite end. Insulate
suction lines to prevent condensation drippage.
Access Panels
All electrical and drain access panels are clearly labeled on
the deck of the produce stand. The access for condensing
units (in the self contained units) is located on the side of
the stand, at the end. Ends of stand are fitted for removal,
if condensing unit has to be taken out.
Refrigeration Lines
Liquid
3/8” O.D.
Suction
5/8” O.D.
NOTE:
The standard coil is piped at
5
/
8
” (suction); however,
the store tie-in may vary depending on the number of
coils and the draw the case has. Depending on the case
setup, the connecting point in the store may be
5
/
8
”,
7
/
8
”,
or 1
1
/
8
”. Refer to the particular case you are hooking up.
Refrigerant lines should be sized as shown on the
refrigeration legend furnished by the store.
Install P-TRAPS (oil traps) at the base of all suction line
vertical risers.
Pressure drop can rob the system of capacity. To keep the
pressure drop to a minimum, keep refrigerant line run as
short as possible, using the minimum number of elbows.
Where elbows are required, use long radius elbows only.
Control Settings
See DBP, DBRP 01, 03 technical data sheet for the
appropriate settings for your merchandiser. Maintain these
parameters to achieve near constant product temperatures.
Product temperature should be measured first thing in
the morning, after having been refrigerated overnight.
For all multiplexing, defrost should be time terminated.
Loadmaster valves are not recommended. Defrost times
should be as directed in the DBP, DBRP 01, 03 technical
data sheet. The number of defrosts per day should never
change. The duration of the defrost cycle may be adjusted
to meet conditions present at your location.
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