35
© STULZ S.p.A. – all rights reserved EN/06.2016/i09
WSA ExplOrEr OriginAl inStructiOnS
5. technical Data
5.1 Application limits
The STULZ Explorer WSA units are provided for operations within the following ranges:
Setting of the safety devices
High pressure limiter
21.5 barg
Safety high pressure limiter
20.0 barg
Low pressure switch
0.4 barg
High pressure safety valve
24 barg
DAngEr
Install upstream of the chiller adequate protection against indirect contact, respecting the
requirements of CEI 64-8, unless other specification by local regulations.
5.1.1 Storage conditions
temperature
-5°C ÷ +45°C
Humidity
5 ÷ 95 % rel. h.
5.1.2 Operating conditions
type of network
TT; TN-S ; TN-C-S
Voltage
400 V / 3ph / 50Hz ; PE
Voltage tolerance
± 10 %
Frequency tolerance
± 1 %
rated ultimate short- circuit
breaking capacity
25 kA
temperature difference
4 - 8 K
Max. glycol content
ethylenic 40 %
propilenic 45 %
A
B
c
D
E
F
H
g
-5
0
5
10
15
20
25
-40
-18
+5
Special request
Standard Version
Standar V heating el glycol
Standar V heating el glycol
+ wind stop
Low temperature version (LT)
LT v heating el glycol
LT v heating el
wind stop
High temperature version (HT)
HT v heating el glycol
HT v heating el
wind stop
DTW - Delivery water temperature (∆T 5°C)
A
T
- Ambien
t T
emper
atur
e
(°C)
Min outdoor temperature
-18°C (optionally -40°C)
Max outdoor temperature
+45°C (opti55°C)
Min chilled water inlet temp.
-5°C
Max chilled water inlet temp.
+15°C (opti25°C)
Max chilled water pressure
10 bar
