TFC Group A3MID User Manual

INSTALLATION INSTRUCTIONS

2 PORT ZONE VALVE VAL222MV VAL228MV

VAL222MV and VAL228MV are 2 port spring return zone valves with 22mm and 28mm compression

fittings and an auxiliary switch. This is for general purpose flow control applications or central heating
systems. When correctly wired with an appropriate room thermostat, cylinder thermostat and
programmer the valve will control the water flow from the boiler to hot water and from boiler to central
heating.

SPECIFICATIONS

• Supply voltage 240V. AC 50Hz

• Power consumption: 6W

• Operating temperature range: +5 to +88

• Cable length one metre

• Max. differential pressure for 22mm = 1Bar

• Max. static pressure 10.0 Bar

• Max. fluid temperature 100

• Max. ambient temperature 52

0

C

0

C

0

C

88

55

A B

ALL DIMENSIONS IN MM

60

55

INSTALLATION

Before fitting the valve, read through the plumbing
and wiring instructions. When replacing the valve
actuator only, set the Auto/Manual lever to the
“Manual Open” position before removal. On the
replacement actuator set the Auto/Manual lever to
“Manual Open” position before fitting.

WIRING

All wiring should be carried out to IEE Regulations
Brown - live
Orange - end switch out
Grey - end switch in
Blue - neutral
Green & Yellow - earth

PLUMBING

When connecting to pipe work do not use the
actuator for leverage. Valves should be held by
wrench flats on body. Place the AUTO/MAN lever in
the MAN position when filling, venting or draining
the system

TAKE CARE NOT TO OVERTIGHTEN

WARNING

All controls must be earthed. All valves should 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 by a competent
electrician.

93

Typical circuit using two zone Valves (VAL222MV)

Programmer, Room Thermostat and Cylinder Thermostat

PROGRAMMER HEATNG H, WATER

L

N

240V AC 50 Hz

Supply fused

at 3A

BROWN

GREY

BLUE

ORANGE

Valve

GRN/YLO

L N

CALL

ON

OFF

COM

SAT

OFF

ON

CALL = THERMOST AT DEMAND
SAT = THERMOSTAT NO DEMAND
COM = COMMON

PERMANENT LIVE

NEUTRAL

COM

CALL

SAT

BROWN

GREY

BLUE

ORANGE

GRN/YLO

Cylinder

Thermostat

Valve

P B

NEUTRAL (P=PUMP) NEUTRAL (B=BOILER)

0

45

0

45

TFC GROUP LTD

Tower House, Vale Rise, Tonbridge, Kent, TN9 1TB, Telephone: [phone] Fax: [phone]

INSTALLATION INSTRUCTIONS

MID-POSITION VALVE VAL322MP VAL328MP

VAL322MP and VAL328MP are 3 port spring return mid-position valves with 22mm and 28mm

compression fittings and switched output. These are for use on fully pumped systems which
when correctly wired with an appropriate room thermostat, cylinder thermostat and programmer
will control the water flow from the boiler to either to hot water only, heating only, or to both
simultaneously.

H,WATER

OFF

ON

GREY

60

55

Pumped flow from boiler

Domestic hot water circuit

INCLUDE IF PROGRAMMER HAS A

HEATING ONLY SELECTION

COM

CALL SAT

CYLINDER

THERMOSTAT

TO BOILER & PUMP

SPECIFICATIONS

• Supply voltage 240V. AC 50Hz

• Power consumption: 6W

• Operating temperature range: +5 to +88

0

C

• Cable length one metre

• Max. differential pressure for 22mm = 1Bar

• Max. static pressure 10.0 Bar

• Max. ambient temperature 52

0

C

INSTALLATION

Before fitting the valve, read through the plumbing
and wiring instructions. When replacing the valve
actuator only, set the Auto/Manual lever to the
“Manual Open” position before removal. On the
replacement actuator set the Auto/Manual lever to
“Manual Open” position before fitting.

WIRING

All wiring should be carried out to IEE Regulations

White -

Room Thermostat Call / Heating on

Grey - Cylinder Thermostat Sat / Hot water off
Orange - Cylinder Thermostat Call / Boiler and Pump
Blue - Neutral
Green & Yellow -

Earth

PLUMBING

When connecting to pipe work do not use the
actuator for leverage. Valves should be held by
wrench flats on body. Place the AUTO/MAN lever
in the MAN position when filling, venting or draining
the system.

TAKE CARE NOT TO OVERTIGHTEN

88

55

122

A

B

All dimensions in MM

AB

Port AB =

43.5

Port A = Heating circuit

HEATING

OFF

COM

SAT

WHITE

ORANGE

Port B =

93

Typical circuit showing Programmer, Room and Cylinder Thermostats as control elements

PROGRAMMER

240V AC 50Hz

Supply fused

At 3A

Mid - position Valve

L N ON

CALL

ROOM

THERMOSTAT

BLUE

GRN / YLO

VALVE

MOUNTING OPTIONS

Valves may be mounted vertically, or horizontally within
the limits shown in the diagram.

0

45

0

45

WARNING

All controls must be earthed. All valves should 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 by a competent
Electrician.

TFC GROUP LTD

Tower House, Vale Rise, Tonbridge, Kent, TN9 1TB, Telephone: [phone] Fax: [phone]