Ariston 47-116-10, A/23 MFFI, A/27 MFFI, 47-116-12 Electrical Diagram, Colours

Page 15

2.11Electrical Diagram

Legend:

AT

=

High Voltage P.C.B.

BT

=

Low Voltage P.C.B.

B= Flame Failure L.E.D.

C= Insufficient Water Pressure L.E.D.

D= Water Temperature Indicator L.E.D.s

E= Overheat Thermostat Warning L.E.D.

F= System Reset Button

G= Selector Knob for Operating Mode

H= Domestic Hot Water Temp. Adjustment

I= Central Heating Temp. Adjustment

J= Wire Connector for Room Thermostat

K= Connector for Total Check System

M= Anti-cycling Device Adjustment for Heating

N= Soft-light Adjustment

O= Max Heating Temperature Adjustment

P= Time Clock Connection

Q= On/Off L.E.D.

R= On/Off Switch

S= Interface Wire for P.C.B.s

T= Relay Motorised Valve

U= Ignitor Relay

V= Gas Valve Relay

W= Fan Relay

X= Circulation Pump Relay

Aa

=

Adaptor (British Gas use only)

Y

=

Selector TCS2

A01

=

Air Pressure Switch

A02

=

Fan

A03

=

Gas Valve

A04

=

Ignitor

A05

=

Motorised Valve

A06

=

Circulation Pump

A07

=

Flame Detector

A08

=

Earth Terminal

A09

=

Flame Detection Circuit

A10

=

Flame Indicator L.E.D.

A11

=

Transformer

A12

=

Filter

B01

=

Over Heat Thermostat

B02

=

Room Thermostat

B03

=

Gas Valve Modulator

B05

=

Heating Sensor

B06

=

Pressure Switch for Heating Circuit

B07

=

Microswitch for Diverter Valve

Colours

Gry

= Grey

Rd

= Red

Bl

= Blue

Grn/Yll

= Yellow/Green

Wh

= White

Brn

= Brown

Blk

= Black

Wh/Rd

= White/Red

B023

15

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Contents Mffi A/27 Mffi Table of Contents General Instructions General InformationMffi Technical InformationOverall View Mffi A/27 MffiReference Standards Siting the Appliance InstallationClearances Overall DimensionsMounting the Appliance Electrical ConnectionGas Connection By-pass Safety Valve DischargeWater Connections Pipe WorkFlue Connections Mains Water Feed Central HeatingFilling Terminal Position B023 Coaxial System Room Thermostat Connection Colours Electrical DiagramB023 Filling the Heating System Water Circuit DiagramMffi Commissioning Initial PreparationRemoving the Front Panel Control PanelSelector Knob for Summer/Winter/Flue Analysis Modes Checks to be run before initial start-up are as follows Initial Start-up Operational AdjustmentsIgnition Failure Circulation FailureOverheating Limescale Build-up GAS AdjustmentsSafety Shut-off Draining the SystemChanging the Type of Gas MaintenanceMiscellaneous Wiring Diagram for Two Heating ZonesBlue Wiring Diagram for Connection to Ariston Unvented CylinderB023 B023 B023 Manufacturer Merloni TermoSanitari SpA Italy Cod 99 84 1260 112 B023