NEOMITIS MTV222A 2 Port Zone Valve Spring Return Instruction Manual

June 8, 2024
NEOMITIS

MTV222A 2 Port Zone Valve Spring Return
Instruction Manual

MTV222A 2 Port Zone Valve Spring Return

NEOMITIS MTV222A 2 Port Zone Valve Spring Return

MTV222A
2 PORT ZONE VALVE SPRING RETURN,
22mm COMPRESSION FITTING
MTV228A
2 PORT ZONE VALVE SPRING RETURN,
28mm COMPRESSION FITTING
When connecting to pipe work do not use the actuator for leverage. Do not over tighten.NEOMITIS MTV222A 2 Port Zone Valve Spring Return -
fig

Put the AUTO/MAN lever in MAN position only for servicing (filling, venting or draining). The lever is not designed for intensive use, it must be operated smoothly with  moderate force, only if the mechanism is seated on the valve body.NEOMITIS MTV222A 2 Port Zone Valve Spring Return - fig
1

OVERVIEW

Thank you for choosing one of our products. These 2 port spring return zone valves have been designed to be used on central heating systems which when wired with room  thermostat, cylinder thermostat and programmer will control the water flow from the boiler to hot water and central heating.

  DIAGRAMNEOMITIS MTV222A 2 Port Zone Valve Spring Return - fig
3

INSTALLATION OF THE VALVE

WARNINGS AND PRECAUTIONS
The valve must be installed with the arrow in the direction of the flow. Failure to do so will result in water hammer and  potential premature failure.Do not over tighten. The
valve can be mounted  vertically or horizontally but must not be mount- ed so that valve head is below the horizontal level of pipe work.NEOMITIS MTV222A
2 Port Zone Valve Spring Return - fig 4 WIRING
All controls must be earthed. All valves must have a means of disconnection from electrical mains supply which incorporates a contact separation of at least 3mm in all poles.
All wiring must be carried out to IEE Regulations by a competent Electrician. The system must be appropriately fused.

Blue: Neutral
Brown: Live
Green & yellow: Earth
Orange: End switch out (auxilliary)
Grey: End switch in (auxiliary)

Typical circuit using two zone Valves Programmer, Room and Cylinder Thermostat as control elements

NEOMITIS MTV222A 2 Port Zone Valve Spring Return - fig
5

Br  Brown
Gr  Grey
O  Orange
G/Y  Green/Yellow
B  Blue

SCHEMATIC DIAGRAMNEOMITIS MTV222A 2 Port Zone Valve Spring Return - fig
6 REPLACING ACTUATOR
REMOVAL

  1. Remove the locking screw and then remove actuator cover and lock the lever in “MAN” position.NEOMITIS MTV222A 2 Port Zone Valve Spring Return - fig 7

  2. Lift actuator from valve body.

  3. Loosen the 2 securing screws. RE-FITTING

  4. Ensure valve stem is in parallel position as indicated.NEOMITIS MTV222A 2 Port Zone Valve Spring Return - fig 11

  5. Seat the actuator over the valve body and tighten the 2 securing screws (see above).

  6. Replace the cover and screw.Release  lever and allow to travel back to“AUTO”: do not force the travel by hand.

DIMENSIONAL SPECIFICATIONS
Dimensions (in mm):NEOMITIS MTV222A 2 Port Zone Valve Spring Return - fig
10

| MTV222 : 22mm compression fittings| MTV228 : 28mm compression fittings
---|---|---
A| 87| 87
B| 55| 55
C| 60| 60
D| 112| 117
E| 108| 108

TECHNICAL SPECIFICATIONS

  • Voltage: 230V~ 50Hz.
  • Power consumption: 6W.
  • Cable lenth: 1m, 5 core.
  • Valve is normally closed when there is no power.
  • Max. differential pressure for 22mm = 1Bar.
  • Max. static pressure 10.0 Bar.

Environment :

  • Fluid temperature : +5°C to +80°C.
  • Max ambient temperature : +50°C.

Hereby, NEOMITIS Limited declares that MTV222a and MTV228a are in compliance with :
Safety Regulations 2016 (2016 No.1101), EMC Regulations 2016 (2016 No.1091) and RoHS Regulations 2012 (2012 No.3032).
The full text of the UKCA declaration of conformity is available at the following internet address: www.neomitis.com.
Hereby, Imhotep Creation, declares that the products mentioned in this manual are in compliance with :
The full text of the EU declaration of conformity is available at the following internet address : www.imhotepcreation.com.
Directives 2014/35/EU, 2014/30/EU and 2011/65/EU. Neomitis Ltd and Imhotep Creation belong to Axenco Group.
The symbol , affixed on the product indicates that you must dispose of it at the end of its useful life at a special recycling point, in accordance with European Directive WEEE 2012/19/EU. If you are replacing it, you can also return it to the retailer from which you buy the replacement equipment. Thus, it is not ordinary household waste. Recycling products enables us to protect the environment and to use less natural resources.
MTV322A
3 PORT ZONE MID-POSITION
VALVE, 22mm COMPRESSION FITTING
MTV328A
3 PORT ZONE MID-POSITION
VALVE, 28MM COMPRESSION FITTINGNEOMITIS MTV222A 2 Port Zone Valve Spring
Return

OVBERVIEW

Thank you for choosing one of our products.
This 3 port zone valve mid position have been designed to be used on central heating systems which when wired with room thermostat, cylinder thermostat and programmer
will control the water flow from  the boiler to either to hot water  only, heating only or both simultaneously.

DIAGRAM

NEOMITIS MTV222A 2 Port Zone Valve Spring Return - fig
3 INSTALLATION OF THE VALVE

WARNINGS AND PRECAUTIONS
**** The valve must be installed according to instructions:
AB = Flow from boiler
A = Radiator circuit
B = Hot water circuit The valve can be mounted vertically or horizontally but must not be mounted so that valve head is below the horizontal level of pipe work.NEOMITIS MTV222A 2 Port Zone Valve Spring Return - fig
14When connecting to pipe work do not use the actuator for leverage. Do not over tighten.NEOMITIS MTV222A 2 Port Zone
Valve Spring Return - fig

Put the AUTO/MAN lever in MAN position only for servicing (filling, venting or draining). The lever is not designed for intensive use, it must be operated smoothly with moderate force, only if the mechanism is seated on the valve body.NEOMITIS MTV222A 2 Port Zone Valve Spring Return - fig
1 WIRING
All controls must be earthed. All valves must have a means of disconnection from electrical mains supply which incorporates a contact separation of at east 3mm in all poles.
All wiring must be carried out to IEE Regulations by a competent Electrician.
The system must be appropriately fused.

Blue: Neutral
White: Heating on
Grey: Hot water off
Green & yellow: Orange: Earth
Orange: Boiler and pump live

To use as diverter valve, isolate orange, connect white and grey together. Mid position Valve
Typical circuit showing Programmer, Room and Cylinder Thermostat as control elementsNEOMITIS MTV222A 2 Port Zone Valve Spring Return - fig
15

W White
Gr Grey
O Orange
G/Y Green/Yellow
B Blue

SCHEMATIC DIAGRAM REPLACING ACTUATOR
REMOVAL

  1. Remove the locking screw and then remove the actuator cover and lock the lever in “MAN” position.NEOMITIS MTV222A 2 Port Zone Valve Spring Return - fig 17

  2. Loosen 2 securing screws.

  3. Lift actuator from valve body. RE-FITTING

  4. Ensure valve stem in parallel position as indicated.

  5. Seat the actuator over the valve body and tighten the 2 securing screws (seeabove).

  6. Replace the cover and screw.Release lever and allow to travel back to “AUTO”: do not force the travel by hand.

IMENSIONAL SPECIFICATIONS

Dimensions (in mm):NEOMITIS MTV222A 2 Port Zone Valve Spring Return - fig
23

| MTV322 : 22mm compression fittings
---|---
A| 87
B| 55
C| 60
D| 117
E| 133

TECHNICAL SPECIFICATIONS

  • Voltage: 230V~ 50Hz.
  • Power consumption: 6W.
  • Cable lenth: 1m, 5 core.
  • Port A is normally closed when there is no power.
  • Max. differential pressure for 22mm = 1Bar.
  • Max. static pressure 10.0 Bar.

Environment :

  • Fluid temperature: +5°C to +80°C.
  • Max ambient temperature: +50°C.

The full text of the EU declaration of conformity is available at the following internet address : www.imhotepcreation.com.
Hereby, Imhotep Creation, declares that the products mentioned in this manual are in compliance with :
Directives 2014/35/EU, 2014/30/EU and 2011/65/EU.
Hereby, NEOMITIS Limited declares that MTV322a and MTV328a are in compliance with:
Safety Regulations 2016 (2016 No.1101), EMC Regulations 2016 (2016 No.1091) and RoHS Regulations 2012 (2012 No.3032).
The full text of the UKCA declaration of conformity is available at the following internet address: www.neomitis.com.
Neomitis Ltd and Imhotep Creation belong to Axenco Group.
The symbol , affixed on the product indicates that you must dispose of it at the end of its useful life at a special recycling point, in accordance with European Directive WEEE 2012/19/EU. If you are replacing it, you can also return it to the retailer from which you buy the replacement equipment. Thus, it is not ordinary household waste. Recycling products enables us to protect the environment and to use less natural resources.

NEOMITIS MTV222A 2 Port Zone Valve Spring Return - qr
codewww.neomitis.com NEOMITIS®
LIMITED – 16 Great Queen Street, Covent Garden, London, WC2B 5AH UNITED KINGDOM
Registered in England and Wales No: 9543404
Tel: +44 (0) 2071 250 236 –
Fax: +44 (0) 2071 250 267 –
E-mail: contactuk@neomitis.com

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