Grundfos SSN, Инструкция по установке и эксплуатации

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English (GB)
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4.5 Connecting the pump
Use the flexible hoses supplied for connecting the pump to the
pipes. Use of these hoses will ensure strain- and vibration-free
watertight connections.
Fig. 18 Connecting the flexible hoses
Line up the pipes and fit hoses to the pump before connecting to
pipes.
Plastic nuts should be finger-tight plus 1/4 turn. Re-tighten the
nuts after hot water has been pumped for the first time.
Fig. 19 Tightening the connections
Push-fit connections (SSN, SSP, STN and STP pumps)
Use the flexible hoses supplied with the pump for the pump inlet
and outlet ports.
Insert the hose connection to a minimum depth of 33 mm.
Fig. 20 Installation with push-fit connection
Disconnecting the hose
To disconnect the "push-fit" hose, firmly push down the retaining
ring while pulling out the hose.
Fig. 21 Disconnecting of flexible hoses with push-fit
connection
4.6 Temperature setting
Maximum hot-water temperature setting must not exceed 60 °C in
accordance with BS 6700:2006, to eliminate the risk of lime scale
and cavitation.
4.7 Installation options
This section gives you an overview of your options during
installation.
Positioning the pump
• Inlet head of at least 1 m is required for SSP, STP, SSN, STN
and STR pumps.
• Fit a downward loop of at least 450 mm if the pump is
positioned above the hot-water cylinder. See fig. 22.
Fig. 22 Pump positioned above hot-water cylinder
Pipes
• 15 mm pipes can only be used on STR2 and SSR2 pumps up
to 1.5 bar rated pressure.
• Where high flows are expected, we recommend 28 mm.
Electrical installation
• The low-voltage pump installation kits are supplied with 3
metres of connecting lead. The connecting leads between the
pump and the isolating transformer can be extended up to
about 15 metres. Use min. 1.0 mm
2
cable.
Flanges
• Either Surrey, York, Warix or Essex flanges can be used for
the hot-water cylinder, depending on the cylinder type and
installation.
Do not use any jointing compounds or tape.
Ensure unrestricted flow in the flexible hoses.
T
M
0
5
7
3
0
2
0
9
13
-
TM
05
73
03
09
13
The pump must not be subject to mechanical strain.
T
M
05
73
04
09
13
TM
05
73
05
09
13
Max. 45
0
90
0
+
33 mm
T
M
05
73
06
09
1
3
TM
05
69
75
03
13
1
2