CED Fabrications - Designline Brand - Chilled LogoDesignline Cold Displays – Remote Refrigeration.
Designline chilled models are also suitable for use with a remotely sited R404A refrigerated central plant.

1) The units are supplied with a 210mm deep condensing unit transportation cradle attached, to protect the refrigerant liquid & suction line stubs & to house the electrical control box.**
2) Once installed, the cradle can be retained or removed and the electrical control box re-housed locally, if necessary.
3) The following refrigeration items are supplied: 1 x TIS-SW Aalco 1/2″ expansion valve, 1 x 3/8″solenoid valve, 2 x 1/4″ o.d. schrader valves, 1 x Aalco solenoid coil (230v/50Hz), 1 x Aalco ASC coil cable. (These items are not covered by warranty)
4) The single feed evaporator coil is supplied pressure tested to 25 bar with dry nitrogen.
5) 32mm site drainage for evaporator defrost water removal, is required for these models.
6) The following waste connection items are also supplied for installation – 1 x 32mm bottle or P trap, 1M length of 32mm waste pipe.
7) A separate 13A 50Hz 230V  SPN+E electrical supply is required to serve display lighting – in addition to any supply provided for the remote condensing unit.
8) **Electrical control box is supplied with 1.5M plug top and lead.

Calculating the R404A Condensing Unit Size Required

Prior to installation of the central plant/condensing unit, a refrigeration engineer would
1) Calculate the size of the condensing unit required based on the distance away & the route of the refrigeration lines to and from the unit ( i.e. every bend in the refrigeration pipe work through floors etc. changes the flow rate of the gas )
2) The amount of R404A refrigerant needed.
3) Evaporating temperature ( -10deg c ),
4) Specific maximum cooling duty per model (See Spec. Sheet below)

Remote Refrigeration Cold Drop In Display – Specification Sheet
The above would be calculated in conjunction with the information on the attached download sheet.

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Remote Refrigeration Cold Drop In Display – General Layout Drawing
Cold Display

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Multiple Chilled Units – Remote Refrigeration
If the central plant/ condensing unit is to serve other chilled units as well as the CED model, the above information would need to be calculated for the other models, in order to arrive at a suitably sized condensing unit. To allow for a central plant unit that may be serving more chilled units than the CED model, CED program the control panel to ignore high/low pressure alarm, which would be fitted to the central plant/condensing unit.