MidasPlus - Free Instruction ManualsMidasPlus installationinstructions Page4 Importantinformation Introduction TheMidasPlusproductisanexposedbarvalveshowercompletewithfixedandad

Midas Plus installation instructions Page 1

Bar valve with fixed and adjustable

shower heads

Installation guide

Midas Plus


Midas Plus


Components

Literature not shown


Important information

Introduction

The Midas Plus product is an exposed bar valve shower complete with fixed and ad-justable height shower heads. Midas Plus thermostatic valves provide close temperaturestability and fail safe protection on appropriate high pressure systems.

The Midas Plus product is suitable for use on high pressure, combination boiler andboosted gravity systems.

The Midas Plus product is supplied with a 5 year guarantee.

Safety information

This product must be installed by a competent person in accordance with all relevant cur-rent Water Supply Regulations.

THE SHOWER MUST NOT BE USED WITH A HOT WATER SUPPLY TEMPERATUREOVER 65 C.

The Midas Plus product is designed for domestic use only.

Product specification

Midas Plus products are suitable for balanced high pressure, combination boiler systemsand boosted gravity systems. Pressure range 1.0* – 10 bar max (static).

* The combination boiler MUST have a minimum rating of 24kW (80,000 Btu) and be ofthe type fitted with a fully modulating gas valve.

If in any doubt, please contact the appliance manufacturer before installationcommences.

ConnectionsThe Midas Plus product is designed for conventional supplies with HOT on the Left andCOLD on the Right as viewed from the front.Supply lines must be flushed clear of any debris before installation of the unit. Any debrisaccumulation in the shower valve and head may result in damage and poorperformance.

FlushingSome modern fluxes can be extremely corrosive and, if left in contact, will attack theworking parts of this unit. All soldering must be completed and the pipe work thoroughlyflushed out in accordance with current Water Supply Regulations prior to connection ofthe product.


FiltersTo ensure optimum ongoing performance, Midas Plus products are protected by inletfilter assemblies in the internal waterways. Debris accumulation may result inprogressively reduced flow through the showerhead and noisy operation.

Isolating valvesSuitable full way isolation valves must be fitted to both supplies in accordance withcurrent Water Supply Regulations and our terms of warranty.Due to their restrictive characteristics, stopcocks and ball type valves that reduce the pipebore size must not be used on gravity pumped installations.

PressuresThe Midas Plus cartridge is designed to operate from the mains at a maximum of 10 bar.If the mains pressure exceeds 5 bar a ‘drop tight’ PRV must be fitted on the supply pipeafter the main stopcock. A setting of 3 bar is recommended. It should be noted that day-time pressures approaching 8 bar can rise above the stated maximum overnight.

A suitable PRV is available from Aqualisa.

! The Midas Plus product is not suitable for mixed supply systems, e.g. gravity hot andmains cold.

Combination boiler/multipoint system

The product is suitable for use with combination boiler systems. The combination boilerMUST have a minimum rating of 24kW (80,000 Btu) and be of the type fitted with a fullymodulating gas valve. This is sufficient to operate one outlet point at a time.

If in any doubt, please contact the appliance manufacturer before installationcommences.

The cold supply can be taken from the nearest convenient mains supply and the hotsupply can be taken from the nearest hot water draw-off point. Account must be taken ofthe pressure drops that will occur when other draw-off points are used while theshower is in use. A typical layout is shown overleaf.

Balanced high-pressure system

The cold water supply must be drawn from the same mains supply as that to the hotwater system (down stream of the cylinder manufacturers pressure limiting valve, wheresupplied) and the hot supply from the nearest convenient draw off point. Account mustbe taken of pressure drops that may occur when other draw-off points are used while theshower is in use.

A typical layout is shown overleaf.


Boosted gravity fed hot and cold supplies

Services must be installed according to good plumbing practice having regard to pipe siz-ing, long pipe runs and low-head situations.

Pump installation

PLEASE REFER TO THE MANUFACTURERS PUMP INSTALLATION GUIDE FOR PUMPINSTALLATION INFORMATION.

UNDER NO CIRCUMSTANCES MUST A PUMP BE FITTED DIRECTLY TO THE WATERMAIN.

A pump must only be used to boost the pressure from tank-fed supplies. A typical layoutis shown overleaf.

A minimum 1 bar twin ended booster pump may be fitted with the Midas Plus mixershower, but for improved performance, we recommend a twin ended booster pumplarger than 1 bar is used.

Stored water capacities

The minimum capacity of the cold storage cistern should not be less than 225 litres (50gallons). The capacity of the hot cylinder must be capable of meeting the anticipated de-mand.

CYLINDER TEMPERATURE IN EXCESS OF 65ºC MAY RESULT IN POOR SHOWERPERFORMANCE.

To minimise pressure loss we recommend that the hot and cold supplies are run in 22mmas close as reasonably possible to the mixing valve before reducing to 15mmto suit the intended inlet connection fittings.

Siting

With boosted gravity fed systems, please ensure the minimum gravity flow rate issufficient to operate the pump flow switches.

PLEASE REFER TO THE MANUFACTURERS PUMP INSTALLATION GUIDE FOR PUMPINSTALLATION INFORMATION.


Installation instructions

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Eccentric elbows are provided to allow for inlet pipework adjustment between130mm – 170mm centres. Construct suitable connections terminating in½”BSP female fittings.When using the eccentric elbows provided we recommend leavingsufficient threads from the finished wall surface, after the cover plateshave been fitted, to ensure adequate purchase for the exposed valve.If using alternative fixings please refer to the installation instructionsprovided to ensure adequate threads are left to connect the exposedvalve after the cover plates have been fitted to the finished wall surface.

1

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In addition to the guide below it is essential that the written instructionsoverleaf are read and understood and that you have all the necessarycomponents (shown overleaf) before commencing installation. Failure to in-stall the product in accordance with these instructions may adversely affectthe warranty terms and conditions. Do not undertake any part of this instal-lation unless you are competent to do so. Prior to starting ensure that you arefamiliar with the necessary plumbing regulations required to install the prod-uct correctly and safely.

Bar valve fixing accessories are availableseparately. The MD300EFB is a first fix fixingbracket. If using the MD300EFB bracket, ensuresufficient threads are left from the finishedwall surface, after the cover plates have beenfitted, to ensure adequate purchase for the exposed valve.

The BAR001FIX bar valve fixing kit provides amethod of surface siting exposed bar valves ontoa finished wall surface, using 15mmconcealed pipe work.

If required, fit the bar valve fixing accessoryfollowing the relevant installation instructions provided with the accessorykit and proceed to step 6 below.

The exposed valve and fixing bracket assembly MUST NOT be used as agrab rail support method.


If required, apply jointing tape to the threadsand fit the eccentric elbow connectorssufficiently to achieve a water tight seal,terminating at 150mm centres to suit the ex-posed valve inlets.

2

Ensuring adequate provision to allow the water to discharge safely to waste, turnon the supplies to flush the system through. Attach pressure test equipment andpressure test the system in accordance with Water Supply Regulations.

3

Ensuring the washers are positioned within thevalve inlets, offer the valve into position.Tighten the fixing nuts using a suitable tooltaking care not to overtighten.

6

Ensure the ¾” supply connections are temporarily capped to prevent any dirt ordust ingress into the pipe work during the making good process. Remove the capsprior to connecting the shower valve.

4

Place the cover plates onto the exposed ¾” threads, flush with the finished wallsurface and apply a thin bead of mastic if required.5

Ensuring the sealing washer is in position,secure the top outlet valve connector to thevalve and tighten using a suitable tool,taking care not to overtighten.

7


Remove the cover plate and pass the straight riser tube through the wallfixing bracket.2

Fit the formed shower arm to the straightriser tube.

The straight riser tube is a fixed length andis not suitable to cut down.

3

Ensuring the O’ring and nut is secure on theriser tube, locate the rail assembly intoposition within the valve top outlet and pushfully home.

4

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Ensuring the handset cradle is on the lefthand side of the rail, pass the rail through thehandset holder whilst keeping the slider buttondepressed.

1

Fixed & adjustable height head assembly


Carefully slide the wall bracket up the risertube assembly to conceal the join betweenthe straight and formed riser tubes.

5

Ensuring the riser tube assembly has beencorrectly positioned and attached to themixer valve, mark the position of the fixingplate. Remove the riser tube assembly fromthe valve and remove the bracket assemblyfrom the riser rail.

6

Remove the fixing plate from the wallbracket assembly using the hexagonal keyprovided.

7

Place the fixing plate into position and mark and prepare the fixing pointsusing the fixings provided, if suitable.8

Secure the fixing plate to the wall using thescrews provided, if suitable.9


Carefully slide the coverplate onto the wallbracket.11

Re-position the rail assembly into place in the mixer valve outlet and pushfully home. Tighten the fixing nut using a suitable tool, taking care not toovertighten.

12

Secure the wall bracket to the fixing plateusing the hexagonal key provided. Carefullysecure the cover plate flush with thefinished wall surface.

13

Ensuring the hose washer is in place, attachthe hose to the hose outlet, taking care not toovertighten. Turn the shower on towards thewall to allow the water to discharge safely towaste and run the shower for a few seconds toclear any debris in the outlet assembly.

This process can also be repeated for the fixedhead by adjusting the control knob away fromthe wall.

14

Ensuring the wall bracket is in the correct position on the riser rail assembly, se-cure the wall bracket to the rail via the grub screw in the rear of the wallbracket using a suitable hexagonal key.

This will prevent the rail from rotating when fitted to the mixer shower.

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Ensuring the flat washer is in place, carefullyscrew the shower head to the formed armtaking care not to damage the platedsurface. Carefully tighten the shower headwith a suitable tool taking care not toovertighten.

15

Ensuring the hose washers are in the correctposition, secure the handset to the hose andplace into the handset holder.

16The tension of the handset station to thehandset holder is factory set. However, itmay be necessary, especially for showersfitted to high pressure systems, to tightenthe tension as required. Tighten the screw in-side the handset station taking care notto overtighten.

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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 ap-

pliance is too fast

Water flow through the hot

water 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

Adjust the flow control knob

on the mixer valve

to reduce flow until a

comfortable showering

temperature is achieved

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 po-

tential air-traps

Water temperature

regularly swings between

hot and cold

Cold water pressure is too

high

If the static water pressure

exceeds 10 bar, install

pressure reducing valve

(PRV) in accordance with

the installation guide

Poor flow rate Twisted hose

Debris in shower head(s)

Debris in filters

Check and clear as

necessary


Part No:700279 Issue 01 Mar 12

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

Aqualisa Products Limited

The Flyer’s Way

Westerham Kent TN16 1DE

Customer helpline: 01959 560010

Brochure Hotline: 0800 652 3669

Website: www.aqualisa.co.uk

Email: [email protected]

Republic of Ireland Sales

enquiries: 01-864-3363 Service

enquiries: 01-844-3212

Documents

MidasPlus - Free Instruction ManualsMidasPlus installationinstructions Page4 Importantinformation Introduction TheMidasPlusproductisanexposedbarvalveshowercompletewithfixedandad