© STULZ S.p.A. – all rights reserved IT/10.2021/i04
WLA CompACT - TRANSLATIoN oF oRIGINAL INSTRUCTIoNS
12.1. multi-pole connector
It’s made of 1 male connector installed on the rear part of the chiller and of 1 female connector
to be installed on the customer’s utility. They allow the rapid connection of the power supply
(400V/3/50Hz, 400V/3/50Hz e 460V/3/60Hz) and of the signals (generic alarm, stop chiller,
remote on/off, etc...) to the chiller.
The male connector pins are directly wired by the manufacturer. The specific indication of the
connection is indicated in chiller electric diagram, attached to the Manual, Part II, specific for
every chiller.
The installation of multi-pole connector increase the dimension of the chiller in-depth (see
measure H of the table below).
Fixed connector
mobile connector
power supply and signals
power supply and signals
Type
Female
Male
Protection rate (IP)
IP 65
Casing material
Die-cast aluminium
Input
2, cable gland PG21
1, cable gland PG21
Size
4
4
Dimensions (LxPxH)
mm
115,7x55,5x74
73x43x72
Closing system
Low transversal hook
Total pole number
N°
10
10
Number of power supply poles
N°
4
4
Number of signal poles
N°
6
6
Rated voltage
V
500
Rated current
A
16
Pole material
Copper alloy, passivated silver coating
Insulation material group
IIIa
Cable connection section
mm
2
2,5
Type of M3 screw
Screw connection M3
Operating temperature
°C
-40 ÷ + 125
The code includes the components required to install the male connector on chiller rear side.
WARNING
Put the main switch in OFF position before proceeding with connector release.
12.2.
Device for low ambient temperature up to -5°C
Installation of a differential pressure switch for the control of the condenser fan in On-Off mode.
The kit allow the expansion of chiller working ambient temperature limit from +2,5°C up to -5°C
ambient temperature (with water added with proper amount of glycol).
53
