Grundfos SSP 2.0 B, SSP 3.0 B, STP 1.0 B, STP 1.5 B, STP 2.0 B Installation And Operating Instructions Manual
...
Shower pumps
Installation and operating instructions
GRUNDFOS INSTRUCTIONS
Declaration of Conformity
We, Grundfos, declare under our sole responsibility that the products
SSL, STL, STC, SSR, STR, SSP, STP, SSN and STN, to which this
declaration relates, are in conformity with these Council directives on the
approximation of the laws of the EC member states:
— Machinery Directive (2006/42/EC).
Standards used: EN 809: 1998 and EN 60204-1: 2006.
— Low Voltage Directive (2006/95/EC).
Standards used: EN 60335-1: 2002 and EN 60335-2-41: 2003.
— EMC Directive (2004/108/EC).
Bjerringbro, 9th March 2010
Svend Aage Kaae
Technical Director
Grundfos Holding A/S
Poul Due Jensens Vej 7
8850 Bjerringbro, Denmark
Person authorised to compile technical file and
empowered to sign the EC declaration.
2
Original installation and operating instructions.
Caution
Note
Note
1. Symbols used in this document
CONTENTS
1. Symbols used in this document
2. General description
2.1 Type key
3. Installation
3.1 Important instructions
3.2 Positioning the pump
3.3 Hot-water cylinder connections
3.4 Cold-water supply
3.5 Connecting the pump
3.6 STC, STR, SSR, STL and SSL pumps
3.7 Recommended installation
4. Electrical connections
4.1 Electrical connection, 1 x 230 V, 50 Hz
4.2 Electrical connection, low-voltage pumps (STL, SSL
and STL 2.0 CN)
5. Before using the pump
6. Negative-head pumps
6.1 General description
6.2 Dry-running protection
6.3 Connecting the pump
6.4 Installation instructions
6.5 Pressure and flow control
6.6 Operating instructions
6.7 Maintenance
7. Fault finding
7.1 Fault finding, negative-head pumps (STN, SSN and
STL 2.0 CN)
8. Technical data
9. Service
10. Disposal
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.
Page
10
10
10
10
10
10
10
10
11
12
13
15
15
Warning
If these safety instructions are not observed,
3
3
3
4
4
4
5
5
2. General description
5
5
These installation and operating instructions apply to the
6
Grundfos Shower Pumps, types STL, SSL, STC, STR, SSR, STP,
9
SSP, STN and SSN.
9
For supplementary instructions regarding negative-head pumps,
see section 6. Negative-head pumps.
9
Your shower pump has been designed, manufactured and
9
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.
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.
2.1 Type key
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
3
3. Installation
Caution
Note
Note
Caution
Caution
Note
3.2 Positioning the pump
3.1 Important instructions
Do not connect the pump directly to the water
mains supply.
The pump cannot be used with combination
boilers.
Make sure that no foreign particles (such as
solder and dust) are allowed to enter the pump.
The pump cannot operate if the level of the water
in the cold-water storage tank is below the level
of the pump.
• An inlet 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.
• 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.
• Disconnecting hose
To disconnect the "push-fit" hose, firmly push down the white
or grey retaining ring while pulling out the hose.
• Hot-water supply
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. An Essex flange is
recommended for STP 3.0 B, SSP 3.0 B, STP 4.0 B,
STN 3.0 B, SSN 3.0 B and STN 4.0 B pumps.
• 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
Complete all pipework before making any electrical
connections. Do not allow any water to enter into the electrical
terminal box. 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.
Select a position for installing the pump which
affords easy access for subsequent servicing
and maintenance.
Minimum inlet head: 2 metres is recommended.
Keep the pump as close as possible to the source of hot and cold
water.
For optimum performance, ensure the following:
• A good water flow to the pump.
• Sufficient head.
• Unrestrictive pipework, 22 mm is recommended.
• Provision to prevent air locks.
Place the pump in a well-ventilated location, e.g. on the floor of
the airing cupboard.
Do not cover the pump, otherwise the motor will
overheat.
The pump must be placed in a frost-free location.
The pump must be mounted horizontally with the discharge ports
vertically upwards to ensure correct operation of the flow
switches.
To reduce noise, we recommend the pump be mounted on a
small concrete foundation of approximately 225 x 225 mm and
40-50 mm thick.
Connect the pump and shower system as shown in fig. 2.
To achieve 0.5 l/min. to turn the flow switches on, there must be
a minimum height between the cold-water storage tank and the
highest point of the pump outlet pipework of approximately
250 mm. See fig. 2.
The pump must be installed in accordance with the Water Supply
(Water Fittings) Regulations 1999.
For installation within a bathroom, locate the pump in accordance
with the IEE Wiring Regulations seventeenth edition
(BS 7671: 2008) Part 6, Section 601, for a shower pump with an
IPX2 enclosure. The pump must be positioned at least 0.6 metres
horizontally or 3 metres vertically away from any bath, shower
tray or basin.
Warning
The pump may be fitted under a bath, providing
this space is only accessible through the use of
a tool. If in doubt, consult the Wiring Regulations.
3.2.1 Negative head
If the water level in the cold-water storage tank is below the level
of the shower outlet, this is called a negative-head system. To
enable the pump to operate, a negative-head pump must be
used. See section 2.1 Type key.
If the pump is positioned above the outlet of
the hot-water cylinder, ensure that the pipework
to the pump from the cylinder has a downward
loop. This will help prevent air locks.
4
3.3 Hot-water cylinder connections
Caution
Caution
Caution
Note
Note
Discharge
Suction
Plain hose
washer
Wire dome
Do not use any jointing compounds.
The use of a Surrey flange (see fig. 2) is recommended to ensure
a free-flowing supply of air-free hot water. An Essex flange is
recommended for STP 3.0 B, SSP 3.0 B, STP 4.0 B, STN 3.0 B,
SSN 3.0 B and STN 4.0 B pumps.
It is not recommended that the hot-water supply is taken directly
from the top of the hot-water cylinder, as entrapped air may cause
problems.
22 mm pipe should be used to ensure an adequate flow to the
pump. Where high flows are expected, 28 mm is recommended.
3.4 Cold-water supply
Do not connect the pump directly to the water
mains supply.
Do not use any jointing compounds or tape.
The cold-water supply to the pump must be connected using
22 mm pipe to the cold-water storage tank. See fig. 2. The tank
connector should be positioned at least 25 mm (1") lower than the
cold-water supply to the hot-water cylinder to prevent the supply
of hot water only.
3.5 Connecting the pump
Do not use any jointing compounds or tape.
For ease of installation, subsequent servicing and cleaning of
strainers, full-bore isolating gate valves must be fitted in the
pump suction and discharge ports.
Isolating valves greatly assist draining down,
strainer cleaning and refilling, which will result in
much lower service costs.
The flexible hoses supplied with the pump must be used for
connecting the pump to the pipework. Use of these hoses will
ensure strain- and vibration-free watertight connections. The
maximum bend angle should not exceed 45 °.
After initial installation, run the pump for a few minutes, switch off,
drain down and clean the suction strainers.
For SSN, SSP, STN and STP pumps, remove the suction hose
from the pump, and the strainer basket can be removed by hand
or with long-nosed pliers.
Line up the pipework, and fit hoses to the pump before
connecting to pipes. Position pipework accurately so that the
pump is not subject to mechanical strain.
Plastic nuts should be finger-tight plus 1/4 turn. The nuts should
be retightened after hot water has been pumped for the first time.
3.6 STC, STR, SSR, STL and SSL pumps
The strainers supplied with the pump must be fitted to the pump
suction connections. See fig. 1.
• Fit the plain hose washer to the discharge connection.
• Fit the strainer to the suction connection with the wire dome
towards pump.
TM04 6989 1310
Fig. 1 Fitting the strainer
Do not bend hoses as this will cause restriction
of flow.
5
3.7 Recommended installation
System vent
Cold-water
storage tank of at
least 50 gallons
Cold-water supply connection to pump at least 25 mm
below cold-water supply connection to cylinder to
prevent supply of hot water only
Highest point of pipework at least 250 mm
(10 inches) below cold-water tank
See section 8. Technical data
for minimum and maximum
inlet heads from water level to
pump suction port.
Supply to another
shower, if required
Hot
Cold
Shower
valve
230 V, switched
spur
Low-voltage pumps
must be connected via
transformer only.
Mount the pump on
concrete slab to reduce
noise.
Recommended location of pump
at base of hot-water cylinder
Hot-water cylinder set
to a maximum of 60 ºC
Pipework connections, STC, STL
and SSL pumps
Pipework connections, STR, SSR, STP
and SSP pumps
Pump
Hot-water
cylinder
Domestic
hot-water
supply
Outlets
Flow
direction
Inlet
Inlet
Flow
direction
Inlet
Water mains supply
Expansion pipe
Cold-water supply to pump
Cold-water supply to
cylinder, min. 22 mm,
28 mm is recommended
22 mm
service
gate valves
Full-bore gate valve
Hot-water
supply to
pump
Surrey
flange
Outlet
Outlet
Inlet
Fig. 2 Positive-head pumps
Positive-head pumps
• Either Surrey, York, Warix or Essex flanges can be used,
depending on the cylinder type and installation.
• An Essex flange is recommended for pumps rated 3 bar and
above, i.e. models STP 3.0 B, SSP 3.0 B and STP 4.0 B.
• The hot-water supply to the shower pump must be via a
dedicated supply from the flange.
• Do not fit non-return valves on the inlet pipework to the pump.
The pump must be able to vent back to the cold-water storage
tank and hot-water cylinder.
• Avoid positioning outlets in the cold-water storage tank directly
below the inlet from the water mains supply in order to prevent
air from being drawn into the pump or hot-water cylinder.
• 22 mm pipework should be used to and from the pump.
• 15 mm pipework can only be used on STC 1.5 C, STL 1.0 C,
STL 1.5 C, SSL 1.4 C, STR 1.2 C, STR 1.5 C and SSR 1.5 C
pumps.
• The expansion pipe from the hot-water cylinder should always
rise in order to prevent trapped air.
• The outlet pipework from the pump to the shower valve should
rise, where possible, to prevent trapped air.
• Pipework from the pump to the shower valve should go up and
over, rather than under floor.
• Avoid blanked-off pipes (dead legs) which can trap air and
cause problems.
• Avoid kinks in the flexible hoses as this will restrict the flow of
water to and from the pump.
• All pipework should be secured down to minimise noise and
vibration.
• Low-voltage pumps, models STL 1.0 C, STL 1.5 C, SSL 1.4 C
and STL 2.0 C, must be connected to the 230 V electricity
supply via the supplied transformer only.
• After commissioning, the pump ensures that all hose
connections are tight to prevent air from being drawn into the
system.
TM04 6986 1310
6
Loading...