Aqualisa Midas 100 User manual

Midas
Thermostatic exposed shower valve
and bath/shower mixer systems
Installation guide
Midas guide Sep 12 copy:Dolphin install Guide 05/09/2012 15:40 Page 1

Index
Introduction p.4
- Safety information p.4
- Product specification p.4
Connection to supplies p.4
- Flushing p.5
- Filters p.5
- Isolating valves p.5
- Pressures p.5
Gravity system p.5
- Siting p.5
- Pump installation p.6
- Stored water capacities p.6
Balanced high pressure systems p.6
Combination boiler systems p.6
Typical water systems p.7
System components p.9
Valve installation instructions p.12
- Midas range exposed valves p.12
- Midas range bath/shower mixer p.13
Shower head installation p.16
- Midas 100 head p.16
- Midas 200 head p.18
- Midas 300 head p.20
User guide - Shower controls p.22
- Midas range exposed valve p.22
- Midas range bath/shower mixer p.22
User guide - Shower head p.23
- Adjustable height heads p.23
Cleaning & maintenance p.23
Commissioning p.24
Trouble shooting guide p.25
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Introduction
The Midas product range is available as either exposed shower valve systems or exposed bath/shower mixer systems
complete with adjustable height heads. All shower heads feature variable spray patterns. Midas thermostatic valves
provide close temperature stability and fail safe protection on appropriate high and low pressure systems.
The Midas 100 shower valve is suitable for use with gravity, high pressure and combination boiler systems. The
Midas 100 bath/shower mixer is suitable for use with high pressure and combination boiler systems. Please refer to
the product specification section below.
The Midas 200/300 features a specific low pressure exposed valve for use on gravity systems and an exposed valve
and bath/shower mixer suitable for use on high pressure and combination boiler systems. Please refer to the product
specification section below.
In the event of any product problems, please contact the Aqualisa customer helpline on 01959 560010 for
assistance.
Safety information
This product must be installed by a competent person in accordance with all relevant current Water Supply
Regulations.
The Midas range is designed for domestic use only.
Product specification
Midas 100 shower valve, product is suitable for gravity stored, gravity boosted, balanced high pressure and
combination boiler systems. Pressure range 0.1 – 10 bar max (static).
Midas 100 bath/shower mixer, product is suitable for balanced high pressure and combination boiler systems.
Pressure range 1.0 – 10 bar max (static).
Midas 200/300 low pressure shower valve, product is suitable for gravity stored and boosted gravity systems only.
Pressure range 0.1 – 1.0 bar max (static).
Midas 200/300 high pressure shower valve, and Midas 200/300 bath/shower mixer, product is suitable for balanced
high pressure and combination boiler systems. Pressure range 1.0* – 10.0 bar max (static).
* The combination boiler MUST have a minimum rating of 24kW (80,000 Btu) and be of the type fitted with a fully
modulating gas valve.
If in any doubt, please contact the appliance manufacturer before installation commences.
Connections
The Midas product range is designed for conventional supplies with HOT on the Left and COLD on the Right as
viewed from the front.
Supply lines must be flushed clear of any debris before installation of the unit. Any debris accumulation in the
shower valve and head may result in damage and poor performance.
Important information
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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.
Filters
To ensure optimum ongoing performance, the Midas product range is protected by inlet filter assemblies in the
internal waterways. Debris accumulation may result in progressively reduced flow through the showerhead 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 at least every 12 months. In the event of any difficulties please contact
the Aqualisa customer helpline for assistance.
Isolating valves
Suitable full way isolation valves must be fitted to both supplies in accordance with 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.
Pressures
The Midas product range 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.
A suitable PRV is available from Aqualisa.
The Midas product range is not suitable for mixed supply systems, e.g. gravity hot and mains cold.
Gravity fed hot and cold supplies
The Midas 100 shower valve and the specific low pressure Midas 200/300 shower valves are suitable for use with
gravity systems. Services must be installed according to good plumbing practice having regard to pipe sizing, long
pipe runs and low-head situations.
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 to suit the intended inlet connection fittings.
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 kit). Please refer to the
system layouts on page 7.
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Pump installation
UNDER NO CIRCUMSTANCES MUST A PUMP BE FITTED DIRECTLY TO THE WATER MAIN.
PLEASE REFER TO THE MANUFACTURERS PUMP INSTALLATION GUIDE FOR PUMP INSTALLATION
INFORMATION.
Care should be taken to ensure that there is adequate flow through the pump to activate the flow switches.
A pump must only be used to boost the pressure from tank-fed supplies. A typical layout is shown on page 7.
A minimum 1 bar twin ended booster pump may be fitted with any Midas product, but for optimum performance
a Low Pressure Midas 200/300 variant should be used. If fitting a booster pump to a Midas 100 or a High pressure
Midas 200 or 300 product, we recommend a twin ended booster pump larger than 1 bar is used.
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.
Balanced high-pressure system
The Midas high pressure product range is designed to operate with unvented hot water storage systems up to a
maximum pressure of 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. A typical layout is shown on page 8.
Combination boiler/multipoint system
The Midas high pressure product range is suitable for use with combination boiler systems. The combination boiler
MUST have a minimum rating of 24kW (80,000 Btu) and be of the type fitted with a fully modulating gas valve.
This is sufficient to operate one outlet point at a time. The Midas 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.
If in any doubt, please contact the appliance manufacturer before installation commences.
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. A typical layout is shown on page 8.
When fitted to combination boiler systems, Midas exposed shower valves have been designed to give optimum
temperature control and stability from fully modulating combination boilers and instantaneous gas water heaters.
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Typical system diagrams
Typical pumped system installation
(suitable for use with Midas 100 and the Midas 200/300 low pressure shower valve)
Typical gravity system installation
(suitable for use with Midas 100 and the Midas 200/300 low pressure shower valve)
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Typical system diagrams continued
Typical combination boiler system installation
(suitable for use with Midas 100 and the Midas high pressure product range)
Typical thermal storage unit system installation
(suitable for use with Midas 100 and the Midas high pressure product range)
Typical UHW system installation
(suitable for use with Midas 100 and the Midas high pressure product range)
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Components - Midas 100
Exposed shower valve with adjustable height head
Bath/shower mixer with adjustable height head
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Components - Midas 200
Exposed shower valve with adjustable height head
Bath/shower mixer with adjustable height head
Flow regulators for use
with combination
boilers
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Components - Midas 300
Exposed shower valve with adjustable height head
Bath/shower mixer with adjustable height head
Flow regulators for use
with combination
boilers
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Midas exposed valves
2
If required, apply jointing tape to the threads and fit the eccentric elbow connectors
sufficiently to achieve a water tight seal, terminating at 150mm centres to suit the
exposed valve inlets.
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!
!
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.
Bar valve fixing accessories are available separately. The MD300EFB is a first fix
fixing bracket. If using the MD300EFB bracket, ensure sufficient threads are left
from the finished wall surface, after the cover plates have been fitted, to ensure
adequate purchase for the exposed valve.
The BAR001FIX bar valve fixing kit provides a method of surface siting exposed
bar valves onto a finished wall surface, using 15mm concealed pipe work.
If required, fit the bar valve fixing accessory following the relevant installation
instructions provided with the accessory kit and proceed to step 6 below.
The exposed valve and fixing bracket assembly MUST NOT be used as a grab
rail support method.
Eccentric elbows are provided to allow for inlet pipework adjustment between 130mm – 170mm centres.
Construct
suitable connections terminating in ½”BSP female fittings.
When using the eccentric elbows provided we recommend leaving sufficient threads from the finished wall
surface, after the cover plates have been fitted, to ensure adequate purchase for the exposed valve.
If using alternative fixings please refer to the installation instructions provided to ensure adequate threads are
left to connect the exposed valve after the cover plates have been fitted to the finished wall surface.
1
!
3Ensuring adequate provision to allow the water to discharge safely to waste, turn on the supplies to flush the system
through. Attach pressure test equipment and pressure test the system in accordance with Water Supply Regulations.
4Ensure the ¾” supply connections are temporarily capped to prevent any dirt or dust ingress into the pipe work during the
making good process. Remove the caps prior to connecting the shower valve.
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6Ensuring the fibre washers are positioned within the valve inlets, offer the valve into position.
Tighten the fixing nuts using a suitable tool taking care not to overtighten.
7Attach the hose to the valve hose outlet to allow the water to discharge safely to waste.
Turn on the supplies to the shower and turn the shower on to flush the system through.
Turn off the shower.
If required, refer to the commissioning instructions on page 24 to adjust the maximum temperature override button position.
Follow the shower head system installation instructions on pages 16 to 21 to complete the installation.
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5Apply a thin bead of mastic to the rear of the cover plates. Place the cover plates onto the exposed
¾” threads, flush with the finished wall surface.
Midas bath/shower mixers - wall mount installation
!
!
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.
Bar valve fixing accessories are available separately. The MD300EFB is a first fix
fixing bracket. If using the MD300EFB bracket, ensure sufficient threads are left
from the finished wall surface, after the cover plates have been fitted, to ensure
adequate purchase for the exposed valve.
The BAR001FIX bar valve fixing kit provides a method of surface siting exposed
bar valves onto a finished wall surface, using 15mm concealed pipe work.
If required, fit the bar valve fixing accessory following the relevant installation
instructions provided with the accessory kit and proceed to step 6 below.
The exposed valve and fixing bracket assembly MUST NOT be used as a grab
rail support method.
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1Construct suitable connections at 150mm centres terminating in ¾” BSP male threads (available separately from Aqualisa
customer services, part no. 525301).
2Ensuring adequate provision to allow the water to discharge safely to waste, turn on the supplies to flush the system
through. Attach pressure test equipment and pressure test the system in accordance with Water Supply Regulations.
3Ensure the ¾” supply connections are temporarily capped to prevent any dirt or dust ingress into the pipe work during the
making good process. Remove the caps prior to connecting the shower valve.
4Inlet pipe cover plates are available separately from Aqualisa customer services, supplied with part
no. 525301, or complete with the easy fit fixing bracket. If required, apply a thin bead of mastic to
the rear of the cover plates. Place the cover plates onto the exposed ¾” threads flush with the
finished wall surface.
5Ensuring the fibre washers are positioned within the valve inlets, offer the valve into position.
Tighten the fixing nuts using a suitable tool taking care not to overtighten.
6Turn on the supplies to the bath/shower mixer and turn the flow control knob on to flush the
system through. Turn off the bath/shower mixer.
If required, refer to the commissioning instructions on page 24 to adjust the maximum temperature override button position.
Follow the shower head system installation instructions on pages 16 to 21 to complete the installation.
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The Midas range bath/shower mixers feature inlet pipe centres of 150mm. However deck mount adaptors are provided to
allow installation to baths at standard 180mm centres.
1Ensuring the fibre washers are fitted within the valve inlets, attach the deck mount adaptors to
the bath/shower mixer. Tighten the connections using a suitable tool, taking care not to
overtighten.
2Place the rubber washers onto the tap tails and offer the assembly into position onto the bath.
3Place the back nuts onto the tap tails and secure the assembly to the underside of the bath.
Deck mount installation
5Turn on the supplies to the bath/shower mixer and turn the flow control knob on to flush the system through. Turn off
the bath/shower mixer.
If required, refer to the commissioning instructions on page 24 to adjust the maximum temperature override button position.
Follow the shower head system installation instructions on pages 16 to 21 to complete the installation.
4Using suitable connections connect the tap tails to the hot and cold supplies.
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16
1Hold the front and rear of the grey rail end and carefully, but firmly, pull the chrome cover away
from the rail end assembly as shown.
2Prepare two fixing points 470mm vertically apart using a spirit level to facilitate if necessary using suitable fixings to
accept No. 8 non-rusting screws (not supplied).
3Ensuring the handset cradle is on the left side of the rail, pass the rail through the handset
holder whilst keeping the slider button depressed .
5Fit the rail into the rail end bodies ensuring the indents in the rail are facing the finished wall
surface.
Midas 100 adjustable height head installation
4Current water supply regulations state the handset should not be allowed to pass a point 25mm
above the spill over level of the bath or shower tray. If this cannot be achieved, the hose restraint
must be fitted. This is fitted to the rail under the handset holder.
7
Fit the rail end covers into position and push firmly into place.
6Secure the rail assembly to the wall using No 8. non-rusting round head screws of suitable length ensuring the rail and rail
end bodies remain firmly engaged.
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17
9Connect the hose to the bottom of the valve outlet ensuring the hose washer is correctly fitted to allow the water to
discharge safely to waste and run the shower for a few seconds to clear any debris in the outlet assembly.
10 Turn off the shower and pass the hose through the hose restraint.
11 Ensuring the hose washers are in the correct position, depress the anti-swivel locking button on the
handset and secure the handset to the hose. Place the handset into the handset holder.
8If required, optional outlet flow regulators can be purchased from the Aqualisa customer helpline on 01959 560010.
Fit the relevant flow regulator into the brass housing ensuring the O’ring faces the incoming flow. Connect the flow
regulator assembly to the valve outlet ensuring the hose washer is correctly fitted.
!6lpm outlet flow regulators are not suitable for products fitted to combination boiler systems.
The tension of the handset station of the handset holder is factory set. However, it may be
necessary, especially for showers fitted to high pressure systems, to tighten the tension as
required. Tighten the screw inside the handset station taking care not to over-tighten.
!
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18
Midas 200 adjustable height head installation
1Drill and plug two holes 526mm ± 3mm apart using the fixings provided, if suitable.
2Fix the bottom rail bracket into position using the screws provided, if suitable.
3Ensuring the lever is in the upright position, pass the rail through the handset holder.
4Current water supply regulations state that the handset should not be allowed to pass a point
25mm above the spill over level of the bath or shower tray. If this cannot be achieved, the hose
must be passed through the gel hook which has also been designed to be utilised as a hose
restraint.
5Place the rail assembly onto the bottom fixing bracket taking care to engage the rail location
slots on the bracket lugs.
6Place the top fixing bracket into position and secure to the wall using the screws provided, if suitable.
7Slide the rail end covers onto the rail brackets and click into position.
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9Connect the hose to the valve outlet, ensuring the hose washer is correctly fitted to allow the water to discharge safely to
waste and run the shower for a few seconds to clear any debris in the outlet assembly.
8If required, optional outlet flow regulators can be purchased from the Aqualisa customer helpline on 01959 560010.
Fit the relevant flow regulator into the brass housing ensuring the O’ring faces the incoming flow. Connect the flow
regulator assembly to the valve outlet ensuring the hose washer is correctly fitted.
!6lpm outlet flow regulators are not suitable for products fitted to combination boiler systems.
10 Pass the hose through the gel hook.
11 Ensuring the hose washers are in the correct position, depress the anti-swivel locking button on the
handset and secure the handset to the hose. Place the handset into the handset holder.
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Midas 300 adjustable height head installation
1Hold the front and rear of the grey rail end and carefully, but firmly, pull the chrome cover away
from the rail end assembly as shown.
2Prepare two fixing points 765mm vertically apart using a spirit level to facilitate if necessary, using the fixings provided if
suitable.
3Ensuring the handset cradle is on the left side of the rail, pass the rail through the handset holder
whilst keeping the slider button depressed.
4Current water supply regulations state the handset should not be allowed to pass a point 25mm
above the spill over level of the bath or shower tray. If this cannot be achieved, the hose restraint
must be fitted. This is fitted to the rail under the handset holder.
5Fit the rail into the rail end bodies ensuring the indents in the rail are facing the finished wall
surface.
6Secure the rail assembly to the wall using the screws provided ensuring the rail and rail end bodies remain firmly engaged.
7
Fit the rail end covers into position and push firmly into place.
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