Gram Eco Plus U 70 - Connection Diagrams for CO Cabinets

These cabinets are delivered with a re-evaporation tray with an electrical heater inside (100 Watt), positioned
underneath the cabinet. The heater should be controlled by the main controller. This re- evaporation system
is installed as a standard, so that the cabinets can be used where there is no external drain available.
If there is an external drain available or there is a possibility of connecting the cabinet drain outlet to an
external drain pump, one of these solutions is always recommendable, in order to save energy and reduce
maintenance costs. If the cabinet drain water outlet can be connected to one of the two alternative solutions,
the tray and the 100 Watt heater should be removed prior to installing the cabinet. As a minimum the heater
must not be connected to power in the controller box.
On MIDI products the pipe ends for connecting to a remote system are on the rear of the cabinet (shown on
the below fig. 4). Both pipes are clearly marked in order to avoid connecting the cabinet wrongly. Both
connection pipes coming out of the cabinet are 3/8”.
Fig. 4
Rear view showing pipe connections on ECO MIDI cabinets
Drain water on MIDI products
These cabinets are delivered with a re-evaporation tray with an electrical heater (60 Watt) and a float switch
which does control the operation of the heater related to water level inside the tray. This system is positioned
inside the bottom compartment of the cabinet on the right side seen from the front. This is done so that the
cabinets can be used where there is no external drain available.
If there is an external drain available or there is a possibility of connecting the cabinet drain outlet to an
external drain pump, one of these solutions is always recommendable in order to save energy. If the cabinet
drain water outlet is connected to one of the two alternative solutions, the complete tray including 60 Watt
heater, float switch, junction box, connection wire and brackes, should be removed prior to installing the
cabinet. As a minimum the re-evaporation system must must not be connected to power in the controller box.
Connection diagrams for CO
2
cabinets
In order to ease the planning/positioning of pipe work, external drain work and electrical installations related
to installing the Gram CO
2
products, the drawings on the next four pages have been created.
Outlet
Inlet