3
Original installation and operating instructions.
CONTENTS
Page
1. Symbols used in this document
2. General description
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 6. Negative-head pumps.
Your shower pump has been designed, manufactured and
carefully tested in England.
A shower pump installation requires a cold-water storage tank
and a hot-water cylinder. See fig. 2.
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
6. Negative-head pumps.
2.1 Type key
1. Symbols used in this document
3
2. General description
3
2.1 Type key
3
3. Installation
4
3.1 Important instructions
4
3.2 Positioning the pump
4
3.3 Hot-water cylinder connections
5
3.4 Cold-water supply
5
3.5 Connecting the pump
5
3.6 STC, STR, SSR, STL and SSL pumps
5
3.7 Recommended installation
6
4. Electrical connections
9
4.1 Electrical connection, 1 x 230 V, 50 Hz
9
4.2 Electrical connection, low-voltage pumps (STL, SSL
and STL 2.0 CN)
9
5. Before using the pump
9
6. Negative-head pumps
10
6.1 General description
10
6.2 Dry-running protection
10
6.3 Connecting the pump
10
6.4 Installation instructions
10
6.5 Pressure and flow control
10
6.6 Operating instructions
10
6.7 Maintenance
10
7. Fault finding
11
7.1 Fault finding, negative-head pumps (STN, SSN and
STL 2.0 CN)
12
8. Technical data
13
9. Service
15
10. Disposal
15
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
The use of this product requires experience with
and knowledge of the product.
Persons with reduced physical, sensory or
mental capabilities must not use this product,
unless they are under supervision or have been
instructed in the use of the product by a person
responsible for their safety.
Children must not use or play with this product.
Warning
If these safety instructions are not observed,
it may result in personal injury!
If these safety instructions are not observed,
it may result in malfunction or damage to the
equipment!
Notes or instructions that make the job easier
and ensure safe operation.
Please dispose of any packaging supplied with
this pump in an environmentally friendly and
legal manner.
Example S T P 2.0 B
S: Shower pump range
T: Twin impeller
S: Single 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
Grundfos.bk Page 3 Thursday, April 22, 2010 10:28 AM
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