Honeywell MTA06, MTA06H Installation instructions

MTA06 / MTA06H

Installation instructions

Rev. C
EB-MTA06	Pressure Reducing Valve Combination

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MU1H-1037GE23 R1208						Honeywell GmbH

GB

1. Safety Guidelines

1.Follow the installation instructions.

2.Use the appliance

•according to its intended use

•in good condition

•with due regard to safety and risk of danger.

3.Note that the appliance is exclusively for use in the applications detailed in these installation instructions. Any other use will not be considered to comply with requirements and would invalidate the warranty.

4.Please take note that any assembly, commissioning, servicing and adjustment work may only be carried out by authorized persons.

5.Immediately rectify any malfunctions which may influence safety.

2. Functional description

The pressure reducing combination combines a shutoff valve, a pressure reducing valve and a check valve in one appliance.

Spring loaded pressure reducing valves operate by means of a force equalising system. The force of a diaphragm operates against the force of an adjustment spring. If the outlet pressure and therefore diaphragm force fall because water is drawn, the then greater force of the spring causes the valve to open. The outlet pressure then increases until the forces between the diaphragm and the spring are equal again. The inlet pressure has no influence in either opening or closing of the valve. Because of this, inlet pressure fluctuation does not influence the outlet pressure, thus providing inlet pressure balancing.

Check valves have a moving seal disc which is lifted off the seat by a greater or lesser amount depending on the flow rate through the valve. If the flow falls towards zero, then the spring pushes the disc back onto the seat and seals the waterway.

3. Application

Medium	Water, compressed air* and nitrogen* in
	consideration of valid standards (e.g. DIN
	EN 12502)
Inlet pressure	max. 16 bar (MTA06-B)
	max. 25 bar (MTA06-H)
Outlet pressure	1.5-6 bar (preset 3bar) (MTA06-B)
	1.5-12 bar (preset 5bar) (MTA06-H)

5. Scope of delivery

The pressure reducing valve combination comprises:

•Housing with pressure gauge connections on both sides

•Shutoff valve on inlet

•Double check valve on outlet

•Valve insert complete with diaphragm and valve seat

•Fine filter with 0.16 mm mesh

•Spring bonnet with adjustment knob and setting scale (setting scale with MTA06-B only)

•Filter bowl

•Adjustment spring

•Pressure gauge not included (see accessories)

6. Options

MTA06-... B = With threaded connections (inlet male, outlet female thread)

MTA06-... H = With threaded connections (inlet male, outlet female thread, brass filter bowl up to 70°C)

7. Assembly

7.1 Installations Guidelines

Ensure that both connections to the PRV are tightened prior to filling and pressurization

•Install in horizontal pipework with filter bowl downwards.

•The installation location should be protected against frost and be easily accessible

o Pressure gauge can be read off easily o Simplified maintenance and cleaning

•For residential applications where maximum protection against dirt is required, install a fine filter upstream of the pressure reducing valve

•Provide a straight section of pipework of at least five times the nominal valve size after the pressure reducing valve (in accordance with DIN 1988, Part 5)

7.2 Assembly instructions

1.Thoroughly flush pipework

2.Install pressure reducing valve combination o Note flow direction

o Install without tension or bending stresses

*As part of an installation being approved according to PED requirements, this product must also be certified.

4. Technical data

Operating temperature	max. 40°C (MTA06-B)
	max. 70°C (MTA06-H)
	(WRAS for cold water use only)
Minimum pressure drop	1 bar
Connection size	3/4" and 1"
Honeywell GmbH		3	MU1H-1037GE23 R1208