Page 27
English
General Description
The hydraulic connections to the evaporator are of 2”
1
/
2
Victaulic type on 504 – 804 units and 3” Victaulic
type on 904 – 1204 units.
7.6 Air heat exchanger
Coils are made of copper pipes in staggered rows,
mechanically expanded inside an aluminium finned
pack.
7.7 Fans
Fans are of directly coupling propeller type, provid-
ed with aluminium blade with wing profile.
Each fan is provided with galvanised steel accident-
prevention guard.
Finally, motors are completely closed, protection
class IP54, protection thermostat immersed in wind-
ings.
VLS refrigeration diagram
VLH refrigeration diagram
Components:
1) Compressor (Tandem Scroll)
2) Air condenser
3) Dehydrator filter
4) Liquid sight glass
5) Thermostatic expansion valve
6) Heat exchanger
7) Ball shutoff cock
8) Solenoid valve
9) Safety valve
Safety and control devices:
A)
HP pressure switch
B)
LP pressure switch
C)
HP transducer
E)
Differential pressure switch
F)
Air temperature sensor
G) Water outlet temperature sensor
H)
Water inlet temperature sensor
DSafety and control devices:
A
HP pressure switch
B
LP pressure switch
C
Differential pressure switch
D
Air temperature sensor
E
Water outlet temperature sensor
F
Water inlet temperature sensor
G
Ped safety valve
H
Defrosting temperature sensor
Components:
1
Compressor (Tandem Scroll)
2
Air heat exchanger
3
Dehydrator filter
4
Solenoid valve
5
Sight glass
6
Expansion valve
7
Nonreturn valve
8
Ball cock
9
4-way valve
10 Liquid accumulator
11 Liquid receiver
12 Water heat exchanger (Dual type)
13 Desuperheater (optional)
Manuale VLS-VLH1 17-06-2005 9:05 Pagina 27
