dp 8706 fifth concealed thermostatic shower valve

dp 8706 fifth concealed thermostatic shower valve
DP 8706
FIFTH CONCEALED THERMOSTATIC SHOWER VALVE
INSTALLATION GUIDE
DIMENSIONS
150mm
55mm
67mm
20 0mm
Hot water
¾ BSP Parallel
Cold water
¾ BSP Parallel
160mm x 120mm aperture behind face plate
for maintenance access
74mm
81mm
70mm
*25mm maximum panel
thickness including tiles
140mm
4mm mounting washer
G½ Blanking plug
99mm maximum
depth (124mm with
extension kit)
Not to scale
153mm
*Please note: 25mm extension kits are available for installations with panel thickness exceeding 25mm (Par t number GD9901)
3
EXPLODED VIEW
PTC017 – Flow cartridge
PTC033 –
Fibre washer
Connecting
nut
LB2750 – Thermostatic cartridge
Blanking plug
PTS022 – Temperature stop
PTS002 – Non-return valves
4
TYPICAL LAYOUT
HOT
COLD
COLD
HOT
*Flow valves
Double flow valve
Single flow valve
If adding a handset, body jets or bath filler, remove ½" BSP plug from bottom of valve body
and connect suitable flow valve(s)
Available flow valves are:
DH 5000 – Flow valve with flow control cross handle
DL 5000 – Flow valve with flow control lever
(Refer to flow valve installation instructions)
5
TYPICAL FLOW RATES
Static Pressure (Bar)
3.0
2.0
1.0
10
20
30
40
50
Flow (Litres/minute)
Note: Balance pressures shown are applied directly to the hot and cold inlets; flow rates indicated are free
flowing and may vary subject to restrictions created by installation, pipework, layout or application.
The outlet temperature during testing was 38°C.
6
IMPORTANT INFORMATION
Flushing system
It is most important to flush out all pipework
thoroughly before connecting the product.
This is the single most common cause of ceramic
cartridge and thermostatic cartridge failure.
Professional installation
We recommend that our products are fitted
by a fully qualified professional plumber. They
should be installed correctly and in accordance
with all local water regulations and the system
protected by non-return valves (not supplied).
All products and connections should be
accessible for routine servicing.
Supply connections
The hot water supply must be connected to the
left port and cold water to the right port
as viewed from the front.
Suits all systems
This Lefroy Brooks product is potentially
suitable for every possible application, type of
boiler and water supply pressure. However, for
full ‘power’ shower performance it is advisable
to fit a water pump if the supply pressure is
below 1 bar. For systems with combination
boilers, it is not advisable to fit pumps (refer
to boiler manufacturer).
Balancing flow
If there is a significant difference in water
pressures between hot & cold supplies, we
recommend an in-line flow suppressor/
regulator (not supplied) be fitted. This should be
fitted to whichever has the greater flow rate, in
an accessible position close to the valve.
Safety/Anti-scald
This thermostatic valve not only maintains a
constant temperature to approximately plus
or minus 1°C, but will automatically shut down
completely on failure of hot or cold supplies.
Recommended supply temperatures
HOT = 60/65°C
COLD = 10/15°C
Water quality
In hard water areas, a suitable water treatment
system should be provided to prevent limescale
deposits (calcium deposits) which may effect
the long term performance of the thermostatic
cartridge and ceramic cartridge. Exterior
surfaces should be gently wiped with a dry soft
cloth after use to minimise water stains and
limescale deposits.
Temperature setting
Once the installation has been completed the
‘safe temperature’ must be checked and set
in accordance with the setting instructions
(see following ‘setting safe temperature’ &
‘fitting the temperature override’ sections).
The valve is factory set but the working
temperature may differ subject to the hot & cold
water temperatures being supplied to the valve.
Servicing
All serviceable parts are available to maintain
your Lefroy Brooks product (contact retailer for
details). We recommend periodic servicing to
help maintain the best performance from your
shower (‘servicing the thermostatic cartridge’,
‘replacing the flow cartridge’ & ‘replacing the
non-return valve’ sections). Time between
servicing can vary as it is subject to usage
and water quality. Servicing kits are available
(reference code PTC022) or refer to exploded
view for individual items.
7
Making connections
Testing
Before the valve is sealed behind the finished
wall surface it is important to pressure check all
connections. During manufacture the internal
components and external joints of the valve are
pressure tested to 5 bar. However, installation
can affect the external joints. For this reason we
recommend that all connections to and from the
valve are pressure tested. We also recommend
that the connection nut between the two halves
of the valve and also the blanking plug at the
bottom of the valve are checked.
Parallel fittings (direct to valve)
Direct connections to the valve inlets and
outlets should only be made using ½" & ¾" BSP
parallel fittings (refer to ‘typical layout’ section).
Once connections are completed, ensure
the ‘connecting nut’ between the thermostat
body and the flow valve is secure. Tighten if
necessary.
Tapered fittings (use adapters)
Tapered adapters are available to convert the
connections and enable tapered fittings to be
used (¾" BSP – PTC027 / ½" BSP – PTC028).
These should be securely fitted to the valve
using a suitable thread sealing compound to
make a watertight joint.
Access
It is important to leave suitable clearance and
access to the valve and connections for future
servicing.
Setting the ‘safe temperature’
To avoid damage, when setting the ‘safe
temperature’ the thermostatic cartridge spindle
must be turned by hand only. The spindle will
require only minor adjustment. Turning the
spindle to the end of its travel and forcing it
beyond this point will cause internal damage to
the thermostatic cartridge.
Tapered fittings must NOT be connected
directly to the valve without the use of adapters.
Fixing valve to wall
Secure the valve to the wall using suitable
screws and wall plugs (supplied). Spacing
washers are supplied as the valve’s nut
protrudes beyond the rear of the body. All
connections should be pressure tested before
the valve is sealed behind the wall.
Always fit the black plastic ‘temperature stop’
before fitting the ‘override’. One of the
functions of the temperature stop is to prevent
the thermostatic cartridge spindle being turned
beyond the end of its travel. Not fitting the
temperature stop will result in damage to the
thermostatic cartridge.
Non return valves
To protect your water system, non return
valves are fitted behind the face plate and
are accessible from the front. These can be
removed and cleaned if required.
8
SETTING ‘SAFE TEMPERATURE’
Recommended safe temperature settings:
General domestic: 38 °C
Young children or elderly: 37 °C
For specific details please refer to local building regulations, current legislation,
relevant standards and codes of practice.
This valve is designed to be set at the required safe operating temperature, but is fitted with an override
button which allows the user to select higher temperatures if required. The override control is to be
returned to the ‘safe temperature’ setting after use.
D
C
A
F
B
Remove the thermostatic
control handwheel (A) by
unscrewing set screw (B) using
a 1.5mm hexagonal key.
Remove the override (C)
and temperature stop (D)
by unscrewing and removing
screw (E) and washer (F).
E
Adjust the cartridge spline
whilst measuring the
temperature of the water.
Ideally the temperature
measurement should be taken
using a digital thermometer.
Duty of care
Legislation dictates recommendations and guidelines on health and safety, including safe hot water
temperatures. The emphasis is on regulatory and design criteria, with responsibility for meeting such
guidelines being that of a suitably appointed responsible person.
How hot water temperatures affect the skin
65°C A partial thickness burn in about 2 seconds
60°C A partial thickness burn in about 5 seconds
55°C A partial thickness burn in about 15 seconds
50°C A partial thickness burn in about 90 seconds
Safe temperature
The age, mental and physical capabilities of persons occupying the property will effect the ‘safe
temperature’ setting of the thermostatic valve. For specific details please refer to local building
regulations, current legislation, relevant standards and codes of practice.
9
FITTING THE ‘TEMPERATURE OVERRIDE’
Once the safe operating temperature has been set, the next stage is to correctly assemble the
temperature stop (D) & override (C). The temperature stop and ‘safe temperature’ button can be
positioned to customer requirements. The below setting is suitable for right handed operation.
Three typical settings are shown on the next page.
Temperature stop (D) orientation
Safe temperature
(see ‘setting safe
temperature’ section)
Minimum
temperature
Set horizontal –
or slightly lower
(button alignment)
D
Maximum
temperature
C
Safe temperature
locator
Safe temperature
position
F
E
Button
position
1 Locate the temperature stop (D) onto the
cartridge spline with the ‘safe temperature’
locator in a horizontal or slightly lower position.
This is dependent on the orientation of the
splines (as shown above). Do not set higher as
this will effect the position of the button on the
override (C). Once located in a suitable position
push the temperature stop in fully.
2 Locate the override (C) with the button
positioned horizontally and to the left. Slide the
override carefully onto the smaller cartridge
spline. There may be a small amount of rotation
required to align the override mechanism with
the safe temperature position.
Note: The button may not be perfectly
horizontal depending on the orientation of the
cartridge splines.
3 Secure with screw (E) and washer (F). It is
important to check the water temperature.
4 Fit the temperature control handwheel (A)
ensuring the button is aligned between the arms
of the handwheel, tighten set screw (B) using a
1.5mm hexagonal key to secure.
10
The temperature stop and safe temperature button can be positioned to customer requirements
as below:
Button position
Temperature stop position
Safe temperature
(see ‘setting safe
temperature’ section)
Minimum
temperature
Set horizontal –
or slightly lower
(button alignment)
Maximum
temperature
Safe temperature button set to left
(suitable for right handed operation)
Set vertically –
or slightly
counter clockwise
(button alignment)
Safe temperature
(see ‘setting safe
temperature’ section)
Maximum
temperature
Minimum
temperature
Safe temperature button set to top
(suitable for right and left handed operation)
Maximum
temperature
Set horizontal –
or slightly
higher
(button alignment)
Minimum
temperature
Safe temperature button set to right
(suitable for left handed operation)
11
Safe temperature
(see ‘setting safe
temperature’ section)
SERVICING THE THERMOSTATIC CARTRIDGE
If after a period of time you experience temperature problems with your shower valve, particularly if you
are in a hard water area, it is quite common for limescale deposits to have formed in the thermostatic
cartridge. We recommend you remove the cartridge and soak it in a descaling fluid which normally
resolves the problem. It is difficult to set a regular servicing time scale as it is subject to water conditions
and usage.
H
G
J
A
B
1 Remove the lever assembly (G) by fully
unscrewing in an anticlockwise direction.
Wearing a rubber glove will improve grip.
2 Using a 1.5mm hexagonal key, unscrew set
screw (B) from the thermostatic control
handwheel (A). Remove the handwheel.
4 To remove the facing plate (H) unscrew and
remove fully the 2 fixing screws (J). Carefully
prise the facing plate off the wall using a flat
bladed screw driver (the gasket is reusable).
D
K
C
F
E
L
3 Remove the override (C) by unscrewing and
removing screw (E) and washer (F).
5 Remove the thermostatic cartridge cover (K)
by unscrewing set screw (L) using a 1.5mm
hexagonal key. Temperature stop (D) can be
pulled off.
12
Q
6 Isolate the hot and cold water supplies as
follows: The non-return valve carriers have
a screw in the centre. Use a screwdriver to
turn the screws in a clockwise direction until
they reach their stop. Do not over tighten the
screws as this may damage the non-return
valves.
8 Check the ‘o’ rings (Q) for damage (ie. cuts or
tears). Remove the ‘o’ rings before soaking the
cartridge in descaling fluid. Soak the cartridge
according to the instructions on the descaling
fluid packaging. Rinse under cold water before
fitting (refer to the ‘installing the thermostatic
cartridge’ section to install).
P
N
M
7 To remove the thermostatic cartridge,
unscrew and remove locking nut (M). Remove
anti-rotation washer (N) and pull out
cartridge (P). To help with cartridge removal,
it is recommended you fit override (C) with
screw (E) to make pulling the cartridge out
easier.
13
INSTALLING THERMOSTATIC CARTRIDGE
Slot
Groove
Black line or drilled indication hole
LB2750
N
M
Important note:
For an approximately 38 °C setting, align the
‘key setting points’ shown. Once assembled,
reset the safe temperature by following
the setting instruction in the ‘setting safe
temperature’ section. Check the water
temperature with a thermometer.
2 Insert the anti-rotation washer (N) so it
locates to the ‘flats’ on the cartridge and fits
into the ‘notch’ cut into the valve body.
3 Screw in locking nut (M) and fully tighten
using a 32mm a/f spanner to secure the
thermostatic cartridge in place.
1 Once the ‘key setting points’ have been
aligned and ‘o’ rings (Q) fitted, apply a smear
of silicon grease to the ‘o’ rings and firmly push
the thermostatic cartridge (LB2750) into the
valve body with the groove pointing upwards.
14
REPLACING FLOW CARTRIDGE
If after a period of time you experience problems with your shower developing a regular drip after use, it is
normally an indication that the flow cartridge requires replacement.
Begin by following steps 1–6 in the ‘servicing the thermostatic cartridge’ section.
(PTC017)
R
1 With the face plate and lever assembly
removed, you can see the flow cartridge.
2 Using a 17mm spanner or socket, unscrew the
flow cartridge (R) (counter clockwise) and
remove. The replacement cartridge is PTC017.
3 After installing the replacement flow cartridge,
fit the temperature stop, cartridge cover, face
plate and lever. Assemble in reverse order
15
REPLACING THE NON-RETURN VALVES
Begin by following steps 1–5 in the ‘servicing the thermostatic cartridge’ section.
U
T
1 Isolate the hot and cold water supplies before
the shower valve. With the face plate, lever
assembly, cartridge cover and temperature
stop removed, you can see the non-return
valve housing(s). Using a 17mm spanner or
socket, unscrew and remove the non-return
valve housing(s) (T).
2 Insert a screwdriver or similar tool into the
slot in the non-return valve housing. Push the
non-return valve (U) out of the housing and
remove.
3 Install the replacement non-return valve(s).
Assemble in reverse order.
16
DOs
DON’Ts
•Check all joints and connections before sealing
the valve behind the finished wall/mounting
surface.
•Ensure that the ‘safe temperature’ has been set.
•Ensure the black plastic ‘temperature stop’ has
been fitted to avoid damage to the thermostatic
cartridge and enable the ‘safe temperature’ to
be operational.
•Ensure that the thermostatic valve, connected
controls and outlets work satisfactory.
•Instruct the customer how to override the ‘safe
temperature’ setting. Also ensure the customer
knows the dangers of overriding the setting and
understands that the override control is to be
returned to the ‘safe temperature’ setting after
use.
•Hand these instructions along with the cleaning
leaflet to the customer.
•Ensure that the valve is suitably protected
from damage and decorating materials during
installation.
•Do not use excessive force when turning
the thermostatic cartridge spindle. This will
damage the cartridge. To avoid damage, when
setting the ‘safe temperature’ the thermostatic
cartridge spindle must be turned by hand only.
The spindle will require only minor adjustment.
Turning the spindle to the end of its travel and
forcing it beyond this point will cause internal
damage to the thermostatic cartridge.
17
20.065.223A / AUGUST 2016
CUSTOMER SUPPORT
+4 4 (0)1992 70 8 316
LEFROYBROOK S.CO.UK
Whilst every effort is made to ensure the accuracy of these, they are subject to change without
notice as part of the company’s product development process. The use of trademarks, product design
and artwork is subject to licence or agreement with LBIP Ltd. The design registrations, trademark registrations
and copyrights are protected by law and the use or reproduction outside the terms of an agreement is prohibited.
The right to modify designs and dimensions is reserved. LBIP Ltd is a member of ACID (Anti Copying in Design).
© LBIP Ltd 2016
Was this manual useful for you? yes no
Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Download PDF

advertising