Torrent AP265 Installation And Operating Instructions Manual

SHOWER PUMP

INSTALLATION AND OPERATING INSTRUCTIONS

Before installation, read these installation and operating instructions. Installation and

operation must comply with local regula tions and accepted codes of good practice.

INSTALLER PLEASE LEAVE THESE INSTRUCTIONS WITH CUSTOMER

General

Your Shower Pump has been carefully designed, manufactured and tested in England.
The important instructions MUST be followed, otherwise the pump may be damaged and

your warranty invalidated.

Please dispose of any packaging s u p pli ed with this pump in an environmentally
friendly and legal manner.

Important Instructions

• Do not connect the pump directly to the water mains supply.
A shower pump installation requires a cold water storage tank and a hot water cylinder.
The pump cannot be used with combination boilers.

• Full bore isolation valves must be fitted in the inlet and outlet pipe work to the
pump.

• When unpacking and installing the pump, ensure that no foreign particles (such as
solder, dust, etc) are allowe d to enter the pump. Thes e will cause the flow switch to
malfunction and damage the pump impeller.

• The pump supply head must comply with the minimum and maximum shown in
the technical data sheet. See figur e 1, pag e 6 for inst allation diagram.
The pump cannot operate if the level of the water in the cold water storage tank is
below the level of the pump.

• Do not fit non-return valves in the inlet line to the pump. The pump must be able to
vent back to the supply tank.

• The strainers supplied with the pump must be used on inlet connections.

• The pump requires dedicated hot and cold water supplies.

• The hot water supply to the pump inlet should be connected from the first outlet from the

hot water cylinder expansion pipe. Use of a Surrey Flange is recom m en ded for optimum
pump performance.

• No solder flux.
Do not allow any solder flux to come into contact with any of the plastic parts of the
pump or hoses. If this happens, clean immediately with strong detergent, rinse and
inspect surfaces for corrosion.

• Do not let the pump run dry.
Purge with water thoroughly for 5 minutes on cold water and 5 minutes on hot water
before running pump. Then check that each connection is water tight and not leaking.

• Complete all pipe work before making electrical connections. Do not let any water
into the electrical terminal box.

• After completing installation, the whole system must be thoroughly tested – operating
both hot and cold at full flow.

Maximum hot water temperature must not exceed 60°C (140°F) in accordance with
BS6700 2006.

Finally check that each connection is watertight and not leaking.

Positioning the Pump

Select a position for installing the pump which affords easy access for subsequent
servicing and maintenance.

This shower pump is fitted with long life mechanical seals which, in some very rare
circumstances, can leak. Although this is very unlikely, positi on the pump to minimise any
possible water damage.

The supply head must comply with the minimum and maximum shown in the technical
data. Pipe work to and from the pump must be unrestrictive with provision to prevent air
locks.

Keep the pump as close as possible to the source of hot and cold water.
For optimum performance, ensure

• a good water flow to the pump

• sufficient head

• unrestrictive pipework.

• provision to prevent air locks.

Recommended location for the pump, if space allows, is on the floor of the airing cupboard.
The area around the pump must be well ventilated – the pump must not be covered
otherwise the motor will overheat.

The pump must be placed in a frost free location.
If the pump is installed above the outlet le vel of the hot cylinder then an anti gravity loop at

least 250mm deep must be fitted to prevent air locks – see Figure 2, page 7.
The pump must be mounted horizontally with outlets vertically upwards to ensure correct

operation of the flow switches.
To reduce noise, we recommend the pump be mount ed on a small concrete paving slab

approximately 225 x 225mm and 40-50mm thick.
Connect the pump and shower system as s hown in Figure 1, page 6.
To achieve a flow of 0.5 l/min, to turn the flow switches on, there must be a minimum

height between the cold water st orage tank and the highest point of the out let pipework of
approximately 250mm – see Figure 1, page 6.

The pump must be installed in accordance with the Water Supply (Water Fi ttings)
Regulations 1999.

For installation within a bathroom locate the pump in accordance with the IEE Wiring
Regulations seventeenth editi on ( BS7671:2008) 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.

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. Installation under a bath can result
in higher pump noise. The pump requires dedicate d hot and cold water supplies.

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 shower pump to operate, either a negative
head or universal pump or a special negative head kit will be required. The special
negative head kit consists of a pneumatic push button and air switch (pre-wired and
mounted in a terminal box) complete with 7.5 metres (25 feet) of plastic tubing. When the
pump is fitted with a special negative head kit, the shower is operated by turning on the
mixer valve and starting the pump by pushing the switch once. The pump will then run as
normal and will automatically switch off when the shower is turned off.

The service helpline will be able to advise a local stockist of negative head kits.
Negative head kits are not available for Brass pumps.

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Hot Water Supply to the Pump

DO NOT USE ANY JOINTING COMPOUNDS OR TAPE

We recommend that 28mm pipe work is used to feed the cylinder from the header tank for
optimum performance.

The use of a Surrey Flange (s ee Figure 1, page 6), or equivalent, is recommended for
optimum pump performance.

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.

22mm pipework is recommended to ensure an adequate fl ow to the pump. Where high
flows are expected, 28mm is recommended. Refer to the technical data sheet for minimum
pipe size.

It does not matter which end of the pump is connected to the hot water supply. Ensure that
the hot water supply is connected to the inlet port on the pump.

Cold Water Supply to the Pump

DO NOT CONNECT DIRECTLY TO WATER MAINS
DO NOT USE ANY JOINTING COMPOUNDS OR TAPE

The cold water supply to the pump must be connected directly from the cold water storage
tank, see Figure 1, page 6. 22mm pipework is recommended to ensure an adequate flow
to the pump. Refer to the technical data sheet for minimum pipe size.

The tank connector should be positioned at least 25mm (1”) lower than the cold water
supply to the hot water cylinder to prevent the supply of hot water only.

It does not matter which end of the pump is connected to the cold water supply. Ensure
that the cold water supply is connected to the inlet port on the pump.

Connecting the Pump

DO NOT USE ANY JOINTING COMPOUNDS OR TAPE

For ease of installation, future servicing and cleaning of filters, full bore isolating gate
valves must be fitted to the inlet and outlet pipe work to the pump. (See Figure 1, page 6).

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 this pump to the
pipe work. Use of these hoses will ens ur e strain and vibration-free watertight connections.

The maximum bend angle must not exceed 45º.
Failure to use the hoses, filters and washers (where required) supplied with the
pump will invalidate the warranty.

After initial installation, run the pump for a few minutes, switch off, drain down and clean
the inlet strainers.

Line up 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 ¼ turn. Ensure correct alignment to avoid cross
threading. The nuts should be retightened after hot water has been pumped for the first
time.

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