Aquarian Thermo installation instuctions page 3
Components
Literature not shown
Aquarian Thermo installation instuctions page 4
Important information
Introduction
The Aquarian Thermo is a surface mounted thermostatic mixing valve designed to accept rear entry supplies and has outlet
connections at the bottom or rear. The Aquarian Thermo provides close temperature stability and fail safe protection when
installed on approved gravity or pumped systems and balanced high pressure systems. A cold inlet flow regulator is provided
for use with instantaneous (multipoint) gas water heater and combination boiler applications.
If you have any questions at any stage during installation please contact the Aqualisa customer helpline on 01959 560010.
Exposed pipe work installation
The Aquarian Thermo valve can be adapted for installation using exposed pipe work by purchasing a separate manifold system
to enable this type of installation.
Please refer to the installation instructions supplied complete with the manifold for fitting instructions.
The manifold is available in either white (for white or white/chrome Aquarian Thermo valves) or grey (for use with chrome
Aquarian Thermo valves).
Product codes:
E99MF.20 (white) and E99MF.01 (grey)
should be ordered as required.
Safety information
This product must be installed by a competent person in accordance with all relevant current Water Supply Regulations.
Flushing
Some modern fluxes can be extremely corrosive and, if left in contact, will attack the working parts of this unit. All soldering
must be completed and the pipe work thoroughly flushed out in accordance with current Water Supply Regulations prior to
connection of the product.
Connections
The Aquarian Thermo valve incorporates ‘push fit’ type connections for use with 15mm British Standard copper tube. Tube
should be cut using a rotary type cutter and lubricated using a silicone based lubricant or petroleum jelly (Vaseline or similar)
prior to insertion into the fitting. Supply lines must be flushed clear of any debris before installation of the unit.
Where plastic pipe is to be used, the tube insert must not increase the tube diameter or extend the cut off length by more than 2mm.
The Aquarian Thermo is designed for conventional supplies with HOT on the Left and COLD on the Right as viewed from the
front. However, the Aquarian Thermo can be adapted for use with reversed supplies, but it will be necessary to contact Aqualisa
customer services on 01959 560010 to purchase reversed graphics to enable this operation. Please refer to the reversed
supplies fitting instructions overleaf.
THESE FITTINGS ARE NOT SUITABLE FOR STAINLESS STEEL.
Isolating valves
Suitable isolation valves such as gate valves must be fitted to both supplies in accordance with the current Water Supply
Regulations and our terms of warranty.
Due to their restrictive characteristics, stopcocks and ball type valves that reduce the pipe bore size must not be used on gravity
or pumped installations.
Filters
To ensure ongoing optimum performance the internal control mechanism
‘cartridge’ is protected by a two-part filter system. Debris accumulation
may result in reduced flow from the shower head and noisy operation.
As this condition is not covered by our standard warranty terms, it is
suggested that the cartridge be removed and the filters checked by a
competent person. In the event of any difficulties please contact the
Aqualisa customer helpline for assistance.
Aquarian Thermo installation instuctions page 5
Important information
Siting
For optimum performance, with gravity fed systems, the distance between the bottom of the storage cistern and the shower
head should not be less than 1m (when using an adjustable height shower head). If using a fixed head, the highest point of
the pipe work must be not less tham 1m below the underside of the cistern. Please refer to the system layouts on the reverse of
this guide.
Pump installation
UNDER NO CIRCUMSTANCES MUST A PUMP BE FITTED DIRECTLY TO THE WATER MAIN.
A pump must only be used to boost the pressure from tank-fed supplies. A typical layout is shown on the reverse of this guide.
Stored water capacities
The minimum capacity of the cold storage cistern should not be less than 225 litres (50 gallons). The capacity of the hot
cylinder must be capable of meeting the anticipated demand.
Pressures
The Aquarian Thermo shower valve is designed to control static pressure up to 10 bar. Where pressures are likely to exceed 10
bar, a pressure reducing valve (PRV) must be fitted into the incoming mains supply. A setting of 3 bar is recommended. It
should be noted that daytime pressures approaching 8 bar can rise above the stated maximum overnight.
The Aquarian Thermo is not suitable for mixed supply systems e.g. gravity hot and cold mains.
A suitable PRV is available from Aqualisa.
Gravity fed hot and cold supplies
The cold supply for the valve assembly must be taken directly from the cold storage system. The hot supply may be taken from
the vent/draw off pipe of the hot water cylinder at a point below the cylinder connection or alternatively from the underside of
the horizontal draw off.
Rising pipe work must not be connected into the horizontal draw-off from the cylinder or to any point in the vent/draw off pipe
above the cylinder connection.
CYLINDER TEMPERATURE IN EXCESS OF 65ºC MAY RESULT IN POOR SHOWER PERFORMANCE.
To minimise pressure loss we recommend that the hot and cold supplies are run in 22mm as close as reasonably possible to the
mixing valve before reducing to 15mm.
A typical layout is shown on page 17.
Balanced high-pressure system
The Aqualisa Thermo cartridge is designed to operate with unvented hot water storage systems up to a maximum pressure of
10 bar. A PRV must be used if either supply exceeds 10 bar. The cold water supply must be drawn from the same mains supply
as that to the hot water system (down stream of the cylinder manufacturers pressure limiting valve, where supplied) and the
hot supply from the nearest convenient draw off point. Account must be taken of pressure drops that may occur when other
draw-off points are used while the shower is in use.
Pipe work can generally be run in 15mm.
A typical layout is shown on page 17.
Combination boiler/multipoint system
The gas water heater must be capable of raising the temperature of the incoming water by 35ºC and delivering a flow rate of
no less than 9 litres (2 gallons) per minute to the shower valve. This is sufficient to operate one outlet point at a time. The
Aqualisa Thermo cartridge is designed to operate from the mains at a maximum of 10 bar. If the mains pressure exceeds 10
bar a ‘drop tight’ PRV must be fitted on the supply pipe after the main stopcock.
The cold supply can be taken from the nearest convenient mains supply and the hot supply can be taken from the nearest hot
water draw-off point. Account must be taken of the pressure drops that will occur when other draw-off points are used while
the shower is in use.
Pipe work can generally be run in 15mm.
A typical layout is shown on page 17.
Aquarian Thermo installation instuctions page 6
Step -by-step instructions
In addition to the guide below it is essential that the written instructions
overleaf are read and understood and that you have all the necessary
components (shown overleaf) before commencing installation. Failure to
install the product in accordance with these instructions may adversely affect
the warranty terms and conditions. Do not undertake any part of this
installation unless you are competent to do so. Prior to starting, ensure that
you are familiar with the necessary plumbing regulations required to install
the product correctly and safely.
The Aquarian Thermo is supplied with universal fixings.
!
Surface mounted flexible system
In most cases for hollow wall fixing it will be
necessary to first install a suitable sound fixing
surface within the cavity area before fixing the
valve. Mark out the position of the pipe work
entry points using the template provided. The
15mm supplies must emerge from the wall at
right angles at 150mm pipe centres.
The template may also be temporarily secured to the wall to ensure correct
orientation of the pipe work during making good if required.
1
After making good, using the template, mark and prepare the four fixing
points as outlined above.
IT IS ESSENTIAL THAT THE WALL SURFACE IS FLAT AND EVEN TO AVOID
DISTORTION OF THE SHOWER BACK PLATE.
2
Remove the fixing screw from the centre of the valve fascia and carefully lift
the upper shroud assembly clear from the back plate.
3
Aquarian Thermo installation instuctions page 7
Remove the gripper ring assembly from the
rear of the back plate and ensuring correct
alignment of the gripper rings, slide over the
projecting pipes flush to the wall face.
Cut the supply pipes to their finished length
(18mm – 21mm) using a rotary type cutter.
5
Briefly run the hot and cold supplies to flush out any debris that may be
present in the system.
6
Remove the two fixing screws to release the lower shroud assembly from the
back plate. Carefully remove and set aside.
4
If the valve is being installed for use with a gas
fired instantaneous (multipoint) water heater
or a combination boiler, the cold water flow
regulator must be fitted at this stage by
insertion into the cold water port.
(The flow regulator is supplied in its own pack).
Remove the four cartridge fixing screws and
carefully detach the cartridge assembly from the back plate. Fit the flow
regulator into the cold port fully home, with the central O’ ring facing the
incoming flow. A small length of 15mm pipe may used to facilitate the
installation of this regulator. Refit the cartridge to the back plate using the
four fixing screws ensuring the hot and cold markings on the cartridge are
uppermost.
7
Run a thin bead of silicone sealant in the mastic groove of the back plate.
Using a silicone based lubricant, lubricate the projecting pipe ends before
carefully pushing the shower valve into position fully home. Secure using the
screws provided.
8
Aquarian Thermo installation instuctions page 8
Refit the lower shroud by locating the lugs
into the back plate and move the shroud into
position. Align the fixing screws with the screw
holes, and fix into place ensuring not to
overtighten the fixing screws.
9
The installation may now be checked for leaks. Turn the on/off knob
(left hand knob) fully forwards to ensure the valve is fully turned off.
Attach the shower hose to the ⁄÷™” BSP outlet on the underside of the valve to
allow the water to discharge safely to waste.
10
Refit the upper shroud assembly by locating the lugs into the back plate and
moving the shroud down into position. Fix using the centrally located locking
screw taking care not to overtighten.
12
Turn on the supplies and check for any leaks
upstream of the valve. Slowly open the on/off
control and check for leaks downstream of the
valve. If all is sound, turn off the on/off knob
fully and turn off the supplies.
11
Remove the paper backing from the badge
and push firmly into position in the recess
in the shroud assembly.
13
Aquarian Thermo installation instuctions page 9
In addition to the guide below it is essential that the written instructions
overleaf are read and understood and that you have all the necessary
components (shown overleaf) before commencing installation. Failure to
install the product in accordance with these instructions may adversely affect
the warranty terms and conditions. Do not undertake any part of this
installation unless you are competent to do so. Prior to starting, ensure that
you are familiar with the necessary plumbing regulations required to install
the product correctly and safely.
The Aquarian Thermo is supplied with universal fixings.
!
Surface mounted valve with concealed
fixed head
In most cases for hollow wall fixing it will be
necessary to first install a suitable sound fixing
surface within the cavity area before fixing the
valve. Mark out the position of the pipe work
entry points using the template provided. The
15mm supplies must emerge from the wall at
right angles at 150mm pipe centres.
The template may also be temporarily secured to the wall to ensure correct
orientation of the pipe work during making good if required.
1
After making good, using the template, mark and prepare the four fixing
points as outlined above.
IT IS ESSENTIAL THAT THE WALL SURFACE IS FLAT AND EVEN TO AVOID
DISTORTION OF THE SHOWER BACK PLATE.
2
Remove the fixing screw from the centre of the
valve fascia and carefully lift the upper shroud
assembly clear from the back plate.
3
Remove the two fixing screws to release the
lower shroud assembly from the back plate.
Carefully remove and set aside.
4
Aquarian Thermo installation instuctions page 10
Remove the gripper ring assembly from the
rear of the back plate and ensuring correct
alignment of the gripper rings, slide over the
projecting pipes flush to the wall face.
Cut the supply pipes to their finished length
(18mm – 21mm) and the 22m outlet pipe
(17mm - 28mm) using a rotary type cutter.
5
Briefly run the hot and cold supplies to flush out any debris that may be
present in the system.
6
Remove the four cartridge fixing screws and
carefully detach the cartridge assembly from
the back plate.
7
If the valve is being installed for use with a gas
fired instantaneous (multipoint) water heater
or a combination boiler, the cold water flow
regulator must be fitted at this stage by
insertion into the cold water port.
(The flow regulator is supplied in its own pack).
Fit the flow regulator into the cold port fully
home, with the central O’ ring facing the incoming flow. A small length of
15mm pipe may used to facilitate the installation of this regulator.
9
Remove the outlet elbow from the back plate and replace with the 22mm
outlet connector.
8
Aquarian Thermo installation instuctions page 11
Lubricate the supply pipe ends using a suitable
silicone based lubricant and run a thin bead of
silicone sealant in the mastic groove of the back
plate. Slide the assembly down the projecting
pipes flush to the wall surface ensuring the hot
and cold markings are uppermost.
Secure to the wall using the screws provided.
11
The installation may now be checked for leaks. Turn the on/off knob
(left hand knob) fully forwards to ensure the valve is fully turned off.
If possible, ensure the shower can discharge safely to waste.
12
Turn on the supplies and check for any leaks
upstream of the valve. Slowly open the on/off
control and check for leaks downstream of the
valve. If all is sound, turn off the on/off knob
fully and turn off the supplies.
13
Refit the lower shroud by locating the lugs into the back plate and moving
the shroud into position. Align the fixing screws with the screw holes, and fix
into place ensuring not to overtighten the fixing screws.
14
Refit the cartridge to the back plate.
10
Locate the bottom outlet blanking cap
(supplied in the screwpack) into the lower
shroud and click into position.
15
Aquarian Thermo installation instuctions page 12
Refit the upper shroud assembly by locating
the lugs into the back plate and moving the
shroud down into position. Fix using the
centrally located locking screw taking care
not to overtighten.
16
Remove the paper backing from the badge
and push firmly into position in the recess in
the shroud assembly.
17
Reversed supplies
The Aquarian Thermo is designed for conventional supplies with HOT on the Left and
COLD on the Right as viewed from the front. However, the Aquarian Thermo can be
adapted for use with reversed supplies, but it will be necessary to contact Aqualisa
customer services on 01959 560010 to purchase reversed graphics to enable this
operation.
Remove the shrouds and cartridge assembly from the backplate as detailed
overleaf.
1
Make a note of the orientation of the settings
and the position of the on/off knob before
removing the fixing screw and pulling the knob
clear.
2
Rotate the cartridge assembly 180º so the
hot and cold temperature markings on the top
of the cartridge assembly are now positioned
on the bottom of the cartridge.
3
Aquarian Thermo installation instuctions page 13
Replace the existing conventional on/off
control graphic ring with the new one
purchased separately.
4
Replace the control knob ensuring it is in the same position as prior to being
removed.
5
The shower controls will now be reversed so
the on/off control is now on the right and the
temperature control on the left as viewed
from the front.
!
If being fitted with a adjustable height head, remove and rotate the outlet
connection 180º to ensure it is positioned at the bottom of the valve.
6
Refit the adapted cartridge assembly to the backplate and refit the shrouds
as previously instructed.
7
Aquarian Thermo installation instuctions page 14
Commissioning
The Aquarian Thermo is pre-set to a safe maximum shower temperature. During use, the action of the stop button may be
overridden by depressing it as the temperature control is rotated. Should it be necessary to reset the maximum temperature
position, please observe the following procedures.
1. Ensure that the hot water system is at normal maximum temperature.
2. Turn the temperature control lever to the full cold position (lever fully downwards).
3. Remove the temperature control fixing screw and pull the knob clear.
4. Remove the temperature control lever screws and pull the lever clear.
5. With the cam tooth engaged in the shaft sleeve keyway, turn the sleeve in the appropriate direction to increase or decrease
the maximum temperature. (Each increment equates to approximately 1ºC).
6 Relocate the cam into the cam locking ring and turn the shaft sleeve through 180º (one half turn) to lock the cam down.
7. Depress the red stop button and replace the temperature control knob in the full cold position and secure using the fixing screw.
8. Test the shower by turning it on and slowly increasing the temperature. At the selected point, the button should pop up and
prevent further movement. Repeat the above process if the maximum temperature stop button needs further adjustment.
9. When the stop button is at the desired limit, refit the screw cover in the control knob.
Should the shrouds need to be removed at any time, turn the knob fully clockwise to the off position. Carefully depress the left
hand side of the badge in the middle of the front shroud fascia using a suitable tool taking care not to damage the badge or
the surrounding plated surfaces. The right hand side of the badge will lift clear of the recess enabling you to remove the badge,
giving you access to the small screw fixing the shroud in place. Remove the screw and lift the top shroud assembly clear.
Remove the two fixing screws from the valve assembly and pull the bottom shroud clear.
Should the knobs need to be removed at any time, turn the knob fully downwards to the off position. Remove the screw covers
from the middle of the control knobs with a suitable tool taking care not to damage the surrounding plated areas. Remove the
fixing screws and pull the knob clear.
Should unacceptable damage to the badge occur when removing it from the recess, please contact Aqualisa customer services
who will send a free of charge replacement.
After installation...
Aquarian Thermo installation instuctions page 15
Shower operation
1 Turn the on/off knob fully into the open position to turn the shower on.
N.B. The on/off MUST NOT be used as a method of flow control.
2 Rotate the temperature control lever to select a comfortable showering temperature using the
temperature markings as a guide. Turn the on/off knob fully into the closed position after use.
After installation
Run through the Aquarian Thermo operation with the purchaser and hand them this guide.
Complete and post the Aquarian Thermo guarantee card or register online at www.aqualisa.co.uk.
Cleaning
Your Aquarian Thermo shower valve should be cleaned using only a soft cloth and washing up liquid.
DO NOT USE ABRASIVE CLEANERS.
Cleaning the filters
As this condition is not covered by our standard warranty terms, it is suggested that the cartridge be removed and the filters checked
by a competent person. In the event of any difficulties please contact the Aqualisa customer helpline for assistance.
1. Turn off the supplies to the shower and carefully remove the shrouds as detailed overleaf.
2. Remove the cartridge as detailed overleaf.
3. Carefully ease the inlet filters from their housings by rotating them a quarter turn anti-clockwise.
4. Backwash the filters under a running tap or using a mild solution of vegetable based descalent if required.
5. Refit the filters into the inlet ports and carefully replace the cartridge ensuring the hot and cold markings are uppermost.
6. Refit the shrouds as detailed overleaf.
User Guide
1
2
Aquarian Thermo installation instuctions page 16
Trouble shooting guide
Water output is either all
hot or all cold, or cold only
Symptom Possible cause Action
Reversed inlet supplies Check that the supplies
correspond with the inlet
markings
Water output is not hot
enough
The temperature of the hot
water cylinder is too low
Water flow through the
appliance is too fast
The cylinder temperature
should be at least 15˚c
hotter than the blend
Check the flow rate
recommendations with the
heater manufacturer
Flow rate is poor and water
temperature is low
Airlock in the water supply Check that the pipe work is
laid in accordance with the
correct practices, paying
particular attention to
potential air-traps
Water temperature
regularly swings between
hot and cold
Cold water pressure is too
high
The flow regulator has not
been fitted
If the static water pressure
exceeds 7 bar (100 psi)
install a pressure reducing
valve (PRV) in accordance
with the installation guide
Fit the flow regulator
Poor flow rate Twisted hose
Debris in shower head
Debris in filters
Debris in cold inlet flow
regulator
Check and clear as
necessary
Aquarian Thermo installation instuctions page 17
Supply
Central
heating
boiler
Supply
Vent and draw-off
pipe to hot water
Underside of cistern
Highest point
must be below
underside of
cistern
Hot water
cylinder
Cold feed
to cylinder
Connect
‘A’ or ‘B’
B
A
Supply
Hot water
cylinder
Supply
Pressure
reducing valve
if required
Supply
Vent and draw-off
pipe to hot water
Underside of cistern
Highest point
must be 1m below
underside of
cistern
Hot water
cylinder
Connect
‘A’ or ‘B’
Cold feed
to cylinder
B
A
Typical installations
Typical gravity system installation
Typical pumped system installation Typical UHW system installation
Typical Thermal storage unit system installation
Typical combination boiler installation
Aqualisa Products Limited
The Flyer’s Way
Westerham Kent TN16 1DE
Sales enquiries: 01959 560010
Republic of Ireland 01-864-3363
Customer helpline: 01959 560010
Republic of Ireland 01-844-3212
Brochure Hotline: 0800 652 3669
Website: www.aqualisa.co.uk
Email: [email protected]
Please note that calls may be recorded for training and quality purposes
The company reserves the right to alter, change or modify the product specifications without prior warning
® Registered Trademark Aqualisa Products Limited
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