Aqualisa MIDAS 110 User manual

MIDAS
Installation instructions
110/220

INDEX
INTRODUCTION Page 3
Safety information Page 3
Product specification Page 3
CONNECTION TO SUPPLIES Page 4
Flushing Page 4
Filters Page 4
Isolation valves Page 4
Pressures Page 5
GRAVITY SYSTEMS Page 5
Siting Page 6
Pump installation Page 6
Stored water capacities Page 7
BALANCED HIGH PRESSURE SYSTEMS Page 7
COMBINATION BOILER SYSTEMS Page 7
TYPICAL WATER SYSTEMS Page 8
MIDAS COMPONENTS Page 11
VALVE INSTALLATION INSTRUCTIONS Page 13
Midas Shower Page 13
110/220 adjustable height head installation Page 16
Midas shower column Page 20
Midas Bath/shower mixer wall mount Page 25
Midas Bath/shower mixer deck mount Page 27
USER GUIDE Page 29
Temperature control Page 29
Shower On/O/Flow control Page 29
110 shower column & BSM On/O/Flow control Page 29
220 shower column & BSM On/O/Flow control Page 30
SHOWER HEAD Page 30
CLEANING & MAINTENANCE Page 31
MIDAS RANGE COMMISSIONING Page 32
TROUBLE SHOOTING GUIDE Page 33
2

Important information
INTRODUCTION
The Midas product range is available as either an exposed shower system,
a column valve system, or an exposed bath/shower mixer system complete
with adjustable height heads. All adjustable shower heads feature variable
spray patterns. Midas thermostatic valves provide close temperature
stability and fail safe protection on appropriate high and low pressure
systems.
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 shower valves are suitable for gravity stored, gravity boosted,
balanced high pressure and combination boiler systems.
Pressure range 0.1 –10 bar max (static).
Midas shower column and bath/shower mixer products are suitable for
balanced high pressure, combination boiler and boosted gravity systems.
Pressure range 1.0 –10 bar max (static).
N.B. 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. 3

CONNECTION TO SUPPLIES
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.
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 pipework 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 diculties please contact the Aqualisa customer
helpline for assistance.
Isolation valves
Suitable full bore 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 boosted gravity installations.
4

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 SYSTEMS
The Midas shower valve is 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 o
pipe of the hot water cylinder at a point below the cylinder connection
or alternatively from the underside of the horizontal draw o. Refer to
diagram on page 8 ref point A or B.
Rising pipe work must not be connected into the horizontal draw-o from
the cylinder or to any point in the vent/draw o 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.
5

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 8.
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.
A pump must only be used to boost the pressure from the tank-fed
supplies, a typical layout is shown on page 8.
A minimum 1 bar twin ended booster pump may be fitted with most*
Midas products, we recommend a twin ended boost pump larger than 1 bar
is used.
Due to the characteristics of the bar valve and particular site conditions,
a standard twin ended pump may not be suitable due to insucient flow
to activate the pump's flow switches*.
*SPECIAL NOTES FOR SHOWER COLUMNS (MIDAS SC MODELS) & LOW
FLOW / MINIMAL HEAD APPLICATIONS:
A universal type twin ended pump (works in both positive and negative
head conditions) is required in the below circumstances:
Shower Columns (Midas SC models) – with fixed heads where the head
distance is less than 1.25m.
Low gravity flow – due to restrictions, pipe runs or where the head of water
is below the minimum 1m (fixed heads 1.25m).
6

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 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 o point.
Account must be taken of pressure drops that may occur when other
draw-o points are used while the shower is in use. A typical layout is
shown on page 9.
COMBINATION BOILER SYSTEM
The Midas 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
sucient to operate one outlet point at a time.
For pressure refer to page 5.
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-o point.
Account must be taken of the pressure drops that will occur when
other draw-o points are used while the shower is in use. A typical layout
is shown on page 9.
When fitted to combination boiler systems, Midas shower valves have been
designed to give optimum temperature control and stability from fully
modulating combination boilers and instantaneous gas water heaters.
If temperature adjustment is required, refer to cartridge adjustment
instructions on page 32.
7

TYPICAL GRAVITY SYSTEM INSTALLATION
(suitable for use with Midas 110/220 shower valves)
Head to be 1m minimum
Refer to page 6 (siting)
TYPICAL GRAVITY BOOSTED SYSTEM INSTALLATION
(suitable for use with all Midas valves)
Refer to special notes on page 6*
8

TYPICAL COMBINATION BOILER SYSTEM INSTALLATION
(suitable for use with all Midas valves)
TYPICAL UHW SYSTEM INSTALLATION
(suitable for use with all Midas valves)
9

TYPICAL THERMAL STORAGE UNIT SYSTEM INSTALLATION
(suitable for use with all Midas valves)
10

MIDAS COMPONENTS
Midas 110 shower
Midas 110 shower column
Midas 110 bath shower mixer
11

MIDAS COMPONENTS
Midas 220 shower
Midas 220 shower column
Midas 220 bath shower mixer
12

MIDAS
SHOWER
1
Eccentric elbows are provided to allow for inlet pipework
adjustment between 130mm – 170mm centres. Construct
suitable connections terminating in ½” BSP female fittings.
All eccentric elbows provided convert from ¾” to ½”.
13
•
i
In addition to the guide below it is essential that the written instructions are read and
understood and that you have all the necessary components before commencing installation.
Failure to install the product in accordance with these instructions may adversely aect 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 BAR001FIX bar valve fixing kit provided with Midas
110/220 shower 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 and proceed to step 6.
The valve and fixing bracket assembly MUST NOT be used as a grab rail support method.
INSTALLATION INSTRUCTIONS
Bar valve fixing accessories are available separately.
The MD300EFB is a first fix fixing bracket. If using the
MD300EFB bracket, ensure sucient threads are left
from the finished wall surface, after the cover plates have been fitted, to ensure adequate
purchase for the valve. Please refer to page 14 for recommended thread depths information.
•
i

•
i
When using the eccentric elbows provided we recommend leaving sucient 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.
2
If required, apply jointing tape to the threads and fit the eccentric
elbow connectors suciently to achieve a water tight seal,
terminating at 150mm centres to suit the exposed valve inlets.
3
Ensuring 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.
4
Ensure 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.
14
RECOMMENDED THREAD DEPTH CHART
MD110 Eccentric fittings from finished wall surface MIN 23mm - MAX 25mm
MD220 Eccentric fittings from finished wall surface MIN 30mm - MAX 32mm
EASY FIT
BRACKET
From finished wall surface MIN 20mm - MAX 25mm

15
6
Ensuring the inlet washers are positioned within the valve inlets,
oer the valve into position. Tighten the fixing nuts using a suitable
tool taking care not to overtighten. Unless in line filters are fitted
to the supply pipe work we recommend the rubber filter washers
should be used.
7
Ensuring the hose washer is in place, attach 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 o the shower.
Image shows 220 shower valve
Image shows 220 shower valve
5
Place the cover plates onto the exposed ¾” threads, flush with the
finished wall surface and apply a thin bead of mastic if required.
The cover plate may vary from the image shown.
Image shows 220 cover plates

INSTALLATION INSTRUCTIONS
MIDAS
110/220 ADJUSTABLE HEIGHT HEAD
16
8Ensuring the O-ring is in the correct position on the recess of the spigot section on the mounting plate, place
the wall outlet onto the mounting plate in the 5 o’clock position and rotate clockwise until a stop is
reached.
9Refit the locking screw taking care not to over tighten
10 Drill and prepare two fixing points between 520mm (minimum) and 830mm
(maximum) apart using the fixings provided, if suitable.
11 Pass the rail through the handset holder while keeping the slider levers depressed.
!The top rail end bracket can be adjusted to suit existing screw holes in the
finished wall by sliding the bracket up or down the rail to suit the required
position.
12 Carefully slide the gel hook onto the rail under the handset holder.
!Current 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 been designed to be utilised as a hose restraint.
13 Secure the top rail bracket into position using the screws provided, if suitable.
14 Attach the bottom rail end body onto the rail.
1
Drill and prepare two fixing points between 520mm (minimum)
and 830mm (maximum) apart using the fixings provided, if
suitable.
•
i
The top rail end bracket can be adjusted to suit existing screw holes in the finished wall, by
sliding the bracket up or down the rail to suit the required position.
16
8Ensuring the O-ring is in the correct position on the recess of the spigot section on the mounting plate, place
the wall outlet onto the mounting plate in the 5 o’clock position and rotate clockwise until a stop is
reached.
9Refit the locking screw taking care not to over tighten
10 Drill and prepare two fixing points between 520mm (minimum) and 830mm
(maximum) apart using the fixings provided, if suitable.
11 Pass the rail through the handset holder while keeping the slider levers depressed.
!The top rail end bracket can be adjusted to suit existing screw holes in the
finished wall by sliding the bracket up or down the rail to suit the required
position.
12 Carefully slide the gel hook onto the rail under the handset holder.
!Current 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 been designed to be utilised as a hose restraint.
13 Secure the top rail bracket into position using the screws provided, if suitable.
14 Attach the bottom rail end body onto the rail.
2
Pass the rail through the handset holder while keeping the slider
levers depressed. Ensure the handset holder is in the correct
orientation.
16

16
8Ensuring the O-ring is in the correct position on the recess of the spigot section on the mounting plate, place
the wall outlet onto the mounting plate in the 5 o’clock position and rotate clockwise until a stop is
reached.
9Refit the locking screw taking care not to over tighten
10 Drill and prepare two fixing points between 520mm (minimum) and 830mm
(maximum) apart using the fixings provided, if suitable.
11 Pass the rail through the handset holder while keeping the slider levers depressed.
!The top rail end bracket can be adjusted to suit existing screw holes in the
finished wall by sliding the bracket up or down the rail to suit the required
position.
12 Carefully slide the gel hook onto the rail under the handset holder.
!Current 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 been designed to be utilised as a hose restraint.
13 Secure the top rail bracket into position using the screws provided, if suitable.
14 Attach the bottom rail end body onto the rail.
3
Carefully slide the gel hook onto the rail under the handset holder.
17
15 Slide the rail assembly up through the top rail end body.
16 Align the small hole in the rail with the bottom rail end fixing point. Secure the rail assembly to the wall,
using the fixings provided, if suitable, taking care to not over tighten.
17 Place the rail end caps into the rail ends and push firmly into position.
18 Pass the hose through the gel hanger.
19 Ensuring the hose washer is in the correct position, secure the handset to the hose by
pressing and holding the anti-swivel locking button on the handset whilst securing the
handset to the hose, then place the handset into the handset holder.
20 Ensuring the hose washer is in the correct position; attach the hose to the wall outlet.
4
Secure the top rail bracket into position using the fixings
provided, if suitable.
•
i
Current 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 been designed to be utilised as a hose restraint.
5
Slide the rail assembly up through the top rail end bracket.
17

6
Align the small hole in the rail with the bottom rail end fixing point. Secure the rail assembly to the
wall, using the fixings provided, if suitable, taking care to not over tighten.
17
15 Slide the rail assembly up through the top rail end body.
16 Align the small hole in the rail with the bottom rail end fixing point. Secure the rail assembly to the wall,
using the fixings provided, if suitable, taking care to not over tighten.
17 Place the rail end caps into the rail ends and push firmly into position.
18 Pass the hose through the gel hanger.
19 Ensuring the hose washer is in the correct position, secure the handset to the hose by
pressing and holding the anti-swivel locking button on the handset whilst securing the
handset to the hose, then place the handset into the handset holder.
20 Ensuring the hose washer is in the correct position; attach the hose to the wall outlet.
7
Place the rail end caps into the rail ends and push firmly into
position.
8
Pass the hose through the gel hanger. Connect the longer conical
connection to the shower head and connect the shorter conical
connection to the valve.
9
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.
Midas 110 shower head attachment
18

10
Ensuring the hose washers are in the correct position, oer the
hose onto the handset. Push the handset onto the hose to lock
the anti-kink swivel connector and secure the handset to the hose.
Once tightened, carefully pull the handset away from the hose to
release the integral anti-kink swivel connection. Place the handset
into the handset holder.
Midas 220 shower head attachment
Midas 110 shower head attachment
19

MIDAS
SHOWER COLUMN
1
Eccentric elbows are provided to allow for inlet pipework adjustment between 130mm – 170mm
centres. Construct suitable connections terminating in ½” BSP female fittings.
•
i
When using the eccentric elbows provided we recommend leaving sucient 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 valve after the cover plates have
been fitted to the finished wall surface. Please refer to page 14 for recommended thread depths
information.
20
•
i
In addition to the guide below it is essential that the written instructions are read and
understood and that you have all the necessary components before commencing installation.
Failure to install the product in accordance with these instructions may adversely aect 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 BAR001FIX bar valve fixing kit provided with Midas
110/220 shower column 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 and proceed to step 6.
The valve and fixing bracket assembly MUST NOT be used as a grab rail support method.
INSTALLATION INSTRUCTIONS
Bar valve fixing accessories are available separately. The
MD300EFB is a first fix fixing bracket. If using the
MD300EFB bracket, ensure sucient threads are left
from the finished wall surface, after the cover plates have been fitted, to ensure adequate
purchase for the valve. Please refer to page 14 for recommended thread depths information.
•
i
A MINIMUM CLEARANCE OF 1.2M FROM THE TOP OF THE SHOWER
VALVE IS REQUIRED TO INSTALL THE SHOWER COLUMN.