J&E Hall Cellar Plus 70-S1, Техническое руководство

Страница: 9 / 35

Issue: 01.07.2020 Page 9
Installation
Quick Guide - Wiring
Evaporators:
The JCC indoor evaporators require a 6A single phase supply. For Twin Systems, both evaporators can be connected to a single
mains supply. Separate mains supplies can be installed if required but it is desirable for them to be taken from the same supply
phase. There are no mains isolators fitted to the evaporators.
On the Lead evaporator for Twin Systems, terminals P1 & P2
must be fitted with a link wire to disable the low-pressure switch
fitted on the evaporator coil (see wiring diagram on page 27). The low-pressure switch fitted to the condensing unit once set up
will control the pump down operation.
Lead/Lag Connection (Twin):
The JCC evaporators come pre-fitted with an electronic controller as standard. For the Twin Systems, one of the evaporators
needs to be designated as the Lead Unit with the other being the Lag Unit. The Lead Unit controls the cellar temperature by
operation of the liquid line solenoid valve. The Lag Unit has no control over system operation and will just provide cellar
temperature indication. Please refer to wiring diagram on page 27.
Condensing Unit:
The outdoor condensing unit requires either a single-phase supply or a three-phase supply depending on the unit model selected.
A mains isolator is required as there is no isolator fitted to the condensing unit. Please refer to wiring diagrams on pages 28-29.
There is no need for any interconnecting wiring between the indoor and outdoor units as the outdoor unit will operate in pump
down mode via the low-pressure switch.