8
1. General Safety Rules
These instructions are of fundamental importance for the installation, use and maintenance
of these products and must therefore be read before commencing work and then carried
out accurately by the installer and end user. Installation and maintenance must be carried
out by qualified personnel only. Failure to comply with these safety instructions will cause
risk to people and equipment and may invalidate the guarantee.
Identified hazards are highlighted by the following symbols: -
Danger from general causes:
Danger from electrical causes:
Instructions which if ignored could cause damage or impair the function of the pump are
highlighted by the word:
ATTENTION
1.1 Field of Application
The range is suitable for open vented or pressurised domestic central heating systems only.
1.2 Product Data
SR3 xx/40
SR3 xx/50
SR3 xx/60
SR3 25/70
R2SE
Connection Voltage
1~230V
±
10%, 50Hz
1~230V
±
10%, 50Hz
1~230V
±
10%, 50Hz
Insulation class
H(180
0
C)
H(180ºC)
F(155
0
C)
Temperature class
TF110
T110
TF95
Permitted fluid temperature
Dew point ~ +110
0
C
System of protection
IP44
-10
0
C ~ +110
0
C
+2
0
C ~ +95
0
C
IP44
IP42
Weight
2.9Kg
(6.5lbs)
3.5Kg
(7.7lbs)
2.4Kg
(5.3lbs)
Normal operating flow rate
2 – 26 l/min
Min. inlet pressure at
suction side at
50
0
C
82
0
C
95
0
C
110
0
C
5 – 26 l/min
2-26 l/min
0.05 bar
0.05 bar
0.05 bar
0.15 bar
0.15 bar
0.15 bar
0.3 bar
0.3 bar
0.3 bar
1.1 bar
1.4 bar
-
Maximum static pressure
10 bar (102m water gauge)
10 bar (102m water gauge)
10 bar (102m water gauge)
Maximum Ambient temperature
55
0
C
35
0
C
40
0
C
Recommended cable type
Power Consumption
HOFR 3 x 0.75mm
2
85
0
C
Rating Plate
HOFR 3 x 0.75mm
2
85
0
C
Rating Plate
HO5 VV-F 3 G1.5
Rating Plate
GB
8573 Nocchi Booklet 12 linguil 4124349:Pentair Water Italy Srl - Reb