Impag inta duo
INTADUO
THERMOSTATIC
BATH/SHOWER MIXER
INSTALLATION, OPERATING AND MAINTENANCE
PLEASE LEAVE THESE INSTRUCTIONS WITH THE USER
INTRODUCTION
This installation guide has been produced for the Inta range of thermostatic
products. These instructions cover the installation, operation and maintenance of
the Inta thermostatic bath shower mixer. Please read the enclosed instructions
before commencing the installation of this product, please note;
WE RECOMMEND THAT THE INSTALLATION OF ANY INTA
PRODUCT IS CARRIED OUT BY AN APPROVED INSTALLER
The installation must be carried out strictly in accordance with the Water Supply
(Water Fitting) Regulations 1999 and any local authority regulation.
If in any doubt, we would recommend that you contact either your local water
authority. The secretary of the Water Regulations Committee at WRc on Tel:
01495 248454 or Institute of Plumbing on Tel: 01708 472791
IMPORTANT
When installing the product, care must be taken not to damage/affect the finish
of this product. To ensure the finish of this product is maintained, we recommend
that this product be cleaned periodically with a soft cloth and mild detergent. The
use of any type of abrasive or solvent-based cleaners is not recommended.
All Inta thermostatic products MUST be re-commissioned to suit site conditions to
ensure optimum performance levels of the product are obtained. THE
BATH/SHOWER MIXER IS FACTIRY SET AT 46°C. FOR SHOWERING APPLICATION
A TEMPERATURE OF 43° IS RECOMMANDED.
TECHNICAL DATA
All of the Intaflo range of thermostatic products are suitable for installation on all
types of plumbing systems, including gravity supplies, fully pumped, modulating
combination boiler, unvented water heater and unbalanced supplies i.e. Cold Mains
& Tank Fed Hot. They are not suitable for non-modulating combination boilers.
Max Dynamic Pressure
5 Bar
Max Static Pressure
12 Bar
Max Inlet Temperature
85°C
Pre Set Factory Temp Setting
46°C
Max Unbalanced Pressure Ratio 15:1
(With Flow Regulators)
Max Unbalanced Pressure Ratio
5:1
(Without Flow Regulators)
2
Min Operating Pressure 0.1 Bar
Min Inlet Temperature
10°C
Temperature Stability
± 2°C
Min Temp Differential
10°C
to ensure fail-safe between
hot and cold supplies
INTA BATH/SHOWER MIXER - COMPONENTS
Cap
Filter
Check Valve
Cap
Temperature Control Handle
Flow Control Handle
Flexible Hose (x2)
Diverter Cup
Thermostatic cartridge
Diverter
22mm
Compression Olive
Comp Nut
3
INTA BATH/SHOWER MIXER - DIMENSIONS
55.00
149.00
247.00
3/4" BSP Inlets
180.00
182.00
26.00
129.00
All dimension in mm
4
INSTALLATION INSTRUCTIONS
Please check that all the components are in the box prior to the installation of this
product.
Before starting the installation of this product, ensure that the site conditions are
suitable for installation with this product.The hot water supply is connected to the
left hand side of the valve when viewed from the front and the cold supply to the
right.
We recommend that independent filters, isolation and check valves be fitted in an
accessible position in conjunction with this product for servicing purposes (Not
Supplied).
When installing this product consideration must be made for the accessibility to
all connections and fittings used in conjunction with this product.
All the Inta range of thermostatic bath/shower mixers are suitable for installation on
all types of plumbing systems, including gravity supplies, fully pumped, fully
modulating combination boiler, unvented water heater and unbalanced supplies i.e.
Cold Mains & Tank Fed Hot. They are not suitable for non-modulating combination
boilers. For optimum performance we recommend balanced pressures.
Each bath/shower mixer is supplied with integral non return valves to prevent
cross flow and cross contamination of the water supplies. Additional check valves
maybe necessary in certain circumstances to comply with the Water Regulations.
When using flexible hose kits, where the hand spray is capable of falling within
25mm of the top of the bath or tray, additional backflow prevention devices
maybe required.
We recommend that 22mm hot and cold supplies be used and pipework runs are
kept to a minimum to maintain flow rate on low-pressure installations.
IMPORTANT
Ensure that the hot & cold water supplies are thoroughly flushed before installation
of the shower to prevent blockages of filters and check valves. Flow Regulators
are supplied with the valve, where inlet pressures exceed 1.0 bar. The following
flow regulators are supplied and should be fitted on the hot and cold inlets.
2 Nos. - 6 Litre per minute
5
TYPICAL INSTALLATION DETAILS
Gravity Supplies
The Intaduo must be fed from the coldwater tank and from the hot water
cylinder via a Surrey or Essex type
flange or a separate connection from
the hot water draw off, as close as
practically possible to the top of the
cylinder. Note the distance between
the bottom of the cold-water tank and
the Intaduo MUST be at least 1000mm
(0.1 Bar). Gravity Hot & Mains Cold The cold water supply to the Intaduo
may be taken directly from the rising
main. Under these conditions the 6 litre
flow regulator must be fitted on the
cold inlet.
Isolation Valves
HOT SUPPLY
COLD SUPPLY
Fully Pumped:
Ensure that the performance of the
pump is matched to the Intaduo. Ensure
that the hot and cold-water capacities
are sufficient to supply the shower and
any other draw off points. The Intaduo
can be used on a gravity fed pumped
system. The use of a Surrey or Essex
type connection onto the hot water
cylinder will prevent air being pulled
into the system.
Please refer to the pump manufacturers
details regarding the location of the
pump and connections.
Isolation Valves
HOT SUPPLY
6
COLD SUPPLY
TYPICAL INSTALLATION DETAILS
Fully Modulating Combi Boiler/Instantaneous water heaters:
A combi boiler will produce a constant
flow of water at a temperature within its
operating
range.
However
we
recommend that the system should not
supply hot water in excess of 65°C. The
hot water flow rates will be dependant
on the type of boiler/heater being used
and the temperature rise required to heat
the cold water. To ensure that the Intaduo
is supplied with a relatively balanced
flow rate, we recommend that the 6-litre
flow regulator, as supplied be fitted in
the cold water inlet connection to the
valve.
Isolation Valves
HOT SUPPLY
COLD SUPPLY
Unvented Water Heater:
This type of installation must be carried out in accordance with part G of the
building regulations. Whilst pressure is theoretically equal(balanced) most
unvented hot systems have a pressure-reducing valve on the incoming cold water
prior to the hot water storage. This means that the hot and cold pressures can be
significantly different. Most unvented systems use an inlet manifold located
directly after the pressure-reducing valve. It is recommended that the cold water
supply to the Intaduo is an independent supply. For systems with no manifold
unit after the pressure reducing valve, where the cold water supply pressure is
significantly higher than the hot water
Isolation Valves
supply., we recommend that a separate
pressure reducing valve is fitted to the
cold water supply as close as possible to
the valve, with no draw off points
between the pressure reducing valve
and the shower. Flow regulators are
required in instances were no PRV is
fitted to ensure simultaneous demand is
accounted for.
Please refer to unit manufacturer
requirements for showers. Regarding
HOT SUPPLY
COLD SUPPLY
mini expansion vessels and pressure
reducing valves.
7
PREPARATION
Ensure the hot & cold supplies are positioned correctly to connect to the Intaduo
and accessibility servicing in the future is obtained.
Ensure the mixer is positioned to allow the kit to be installed, at the required
height to suit the tallest user.
180.00
COLD SUPPLY
HOT SUPPLY
8
CONNECTIONS
Fit the Intaduo to the bath and secure in situ using the back nuts provided, having
first fitted any flow regulators as required.
Connect the hot & cold supplies to the Intaduo using the 22mm compression joints
provided. Connect the required adaptor to the shower outlets to suit the kit used
(Note: Outlets connection is not supplied with Intaduo).
Swivel
Flexible hose
supplied
Compression
joint
Isolation Valves
COLD SUPPLY
HOT SUPPLY
NOTE:
Isolation valves must be fitted in close proximity for future servicing.
9
ON SITE CALIBRATION
The factory outlet temperature setting of 46°C of the Inta Intaduo this can be
altered to suit the site conditions, care should be taken when altering the setting
as INCORRECT CALIBRATION CAN CAUSE INJURY.
• Remove the indice from the front of the shower valve
+ COLD
+ HOT
• Fully-open the flow control to establish a stable flow of water and rotate the
temperature control to the maximum hot setting.
• Taking care not to damage the valve body, using a suitably sized screw driver,
hold the temperature control handle in position and rotate the temperature
adjustment screw clockwise by 90° to decrease the temperature by 1°C. To
increase the temperature rotate the temperature adjustment screw anti-clockwise
by 90° to increase the temperature by 1°C.
+ HOT
+ COLD
Turn the temperature control back to the maximum hot setting and measure
the outlet temperature, when stabilised with a calibrated thermometer.
• Repeat procedure until the desired maximum hot temperature is reached.
10
OPERATION
THE INTADUO IS SUPPLIED FACTORY SET AT 46°C.
FOR SHOWERING APPLICATIONS WE RECOMMEND
TEMPERATURE NO GREATER THAN 43°C.
A
IT IS ESSENTIAL THAT WHEN USING THE SHOWER FUNCTION OF
THE INTADUO THE OUTLET TEMPERATURE IS REDUCED TO PREVENT
INJURY.
CAUTION
THE FOLLOWING OUTLET TEMPERATURES ARE
RECOMMENDED WHEN USING THE INTADUO
BATH
SHOWER
46°C
43°C
11
ASSEMBLY OF HANDLES
Indice
Screw
Temperature Control
Nut
Flow Control
REMOVING CARTRIDGE
Using a suitably sized
spanner rotate the
cartridge from the body.
Thermostatic
Cartridge
12
REMOVING FILTERS/CHECK VALVE
Using a suitably sized
spanner rotate the plug
from the body.
Cap
Check Valve
Housing
Filter
Check Valve
Flow Regulator
(If required)
Cap
IMPORTANT
The water supplies must be isolated before check valve cartridge is removed.
13
REMOVING DIVERTER
Using a suitably sized
spanner rotate the plug
from the body.
14
FAULT FINDING
Fault
Diagnosis
Showering temperature is not hot
enough
Ensure the hot water supply is at
constant temperature above 60 deg
C. Check for airlocks in the pipework
The water goes cold during a shower
insufficient stored hot water supply.
Ensure that the boiler is still firing for
combi boilers. Adjust the boiler control
to a minimum setting of 65 deg C not
necessarily the best flow rate
When the water is set at cold, the
showering temperature is too hot
Hot and cold supply connections have
been made in reverse
Max showering/bathing temperature
is too hot or when set to hot water
runs cold
Check the commissioned maximum
temperature of the valve. Check
connections to the valve are not
reversed
Flow of water through the valve is low
Check the filters are clean and supply
pressure is above 0.1 bar
No Flow of water
Ensure the valve has not fail-safed,
and check that there is water flow to
the valve and the check valves are not
closed - see exploded drawing
AFTERCARE INSTRUCTIONS
• With all highly polished items, care should be taken not to damage any of the
external surfaces.
• We recommend that to ensure the physical appearance of the shower valve
and component parts is maintained that periodically, the valve should be
cleaned with a soft damp cloth and a mild detergent. The use of abrasive or
solvent cleaners will damage the finish of the product.
• We recommend periodically that the shower handset/shower head is cleaned
using a suitable de-scaling solvent. Check first it does not affect the plated
surface.
• Periodically the filter and check valve housing should be removed and cleaned
to remove any system debris, which may have collected. Ensure free operation
of the check valve.
• We recommend that the bath/shower mixer valve is serviced at least annualy.
• Only use genuine Inta spares full list available on request.
15
INTA
INTATEC LIMITED
Airfield Industrial Estate
Hixon, Staffs, ST18 0PF
Tel: 01889 207200 Fax: 01889 271172
271172
www.intatec.co.uk
www.intatec.co.uk
16
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