Grundfos SSL 1.4 C, Installation And Operating Instructions Manual

Page: 3 / 16

3
CONTENTS
Page
1. Symbols used in this document 3
2. General 3
2.1 Type key 3
3. Important instructions 3
4. Positioning the pump 4
4.1 Negative head 4
5. Hot-water cylinder connections 4
6. Cold-water supply 4
7. Connecting the pump 4
7.1 STC, STR, SSR, STL and SSL pumps 4
8. Electrical connections 5
8.1 Electrical connection, 1 x 230 V, 50 Hz 5
8.2 Electrical connection, low-voltage pumps (STL, SSL and
STL 2.0 CN)
5
9. Before using the pump 5
10. Negative-head pumps 6
10.1 General 6
10.2 Dry-running protection 6
10.3 Connecting the pump 6
10.4 Installation instructions 6
10.5 Pressure and flow control 6
10.6 Operating instructions 6
10.7 Maintenance 6
11. Fault finding chart 7
11.1 Fault finding, negative-head pumps (STN, SSN and STL
2.0 CN)
8
12. Technical data 9
13. Service 11
14. Disposal 11
1. Symbols used in this document
2. General
These installation and operating instructions apply to the
Grundfos Shower Pumps, types
STL , SSL , STC , STR , SSR , STP ,
SSP , STN and SSN .
For supplementary instructions regarding negative-head pumps,
see section
10. Negative-head pumps .
Your shower pump has been designed, manufactured and
carefully tested in England.
If correctly installed and not misused, it will give many years of
reliable service.
A shower pump installation requires a cold-water storage tank
and a hot-water cylinder. See fig. 2, page 12.
Low-voltage shower pumps
All transformers are fitted with auto-resetting thermal cut-outs.
If the transformer overheats for any reason, the thermal cut-out
will switch the pump off. The cut-out will automatically switch the
pump on again when the transformer has cooled down.
For the STL 2.0 CN pumps, also read the instructions in section
10. Negative-head pumps .
2.1 Type key
3. Important instructions
• A supply head of at least 2 metres is recommended.
• Non-return valves
Do not fit non-return valves in the suction line to the pump.
Make sure that the pump can vent back to the supply tank.
• STC, STR, SSR, STL and SSL pumps
The strainers supplied with the pump must be used on suction
connections. See fig. 1, page 4.
• Push-fit connections (SSN, SSP, STN and STP pumps)
The pump suction and discharge ports are fitted with push-fit
connections. The flexible hoses supplied with the pump
must
be used.
Make sure that each hose connection is fully inserted to a
minimum depth of 33 mm.
The hot-water supply to the pump suction port should be
connected from the first outlet from the hot-water cylinder
expansion pipe, i.e use a Surrey flange.
• Disconnecting hose
To disconnect the "push-fit" hose, firmly push down the white
or grey retaining ring, while pulling out the hose.
• No solder flux
Do not allow any solder flux to come into contact with any of
the plastic parts of the pump.
• Do not let the pump run dry
Purge with water thoroughly for 5 minutes before running the
pump.
• Test the system
After completing installation, the whole system must be
thoroughly tested – operating both hot and cold water at
maximum flow.
Maximum hot-water temperature setting must not exceed
60 °C (140 °F) in accordance with BS 6700: 2006.
Finally check that each connection is watertight and not
leaking.
Warning
Prior to installation, read these installation and
operating instructions. Installation and operation
must comply with local regulations and accepted
codes of good practice.
Warning
If these safety instructions are not observed,
it may result in personal injury!
Caution
If these safety instructions are not observed,
it may result in malfunction or damage to the
equipment!
Note
Notes or instructions that make the job easier
and ensure safe operation.
Note
Please dispose of any packaging supplied with
this pump in an environmentally friendly and
legal manner.
Example S T P 2.0 B
S : S hower pump range
T : T win impeller
S : S ingle impeller
P : Positive head
N : Negative head
L : Low voltage
C : Centrifugal
R : Regenerative
Maximum head [bar]
Material:
B : Brass
C : Composite
CN : Composite, negative head
Caution
Do not connect the pump directly to the water
mains supply.
The pump cannot normally be used with
combination boilers.
Make sure that no foreign particles (such as
solder, dust, etc.) are allowed to enter the pump.
Note
The pump cannot operate if the level of the water
in the cold-water storage tank is below the level
of the pump.
Grundfos.bk Page 3 Wednesday, September 3, 2008 1:36 PM