INSTALLATION INSTRUCTIONS

See below typical layout of a pumped central heating hot water circuit with gravity.

Feed and

Expansion Cistern

Cold Water Storage Cistern

Two port

normally open motorized valve controlled by cylinder thermostat

Heat Leak radiator with two full way lock shield valves

Thermostatic radiator valves

Programmable room

to provide temperature zoning

thermostat

Double Feed indirect cylinder

High limit pipe thermostat to bring on circulator in an overheat situation

Low limit pipe thermostat

to prevent the pump coming on until a minimum temperature is reached

Pump and isolating valves

Injector tee

to pump assist the thermosyphon circuit when the pump is operating

Yeoman High Output Boiler

installed to BS8303, ADJ and these installation instructions

See below typical layout of a fully pumped central heating and hot water circuit.

 

Cold Water

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Storage Cistern

 

 

 

 

 

 

 

 

 

 

 

 

 

Two

 

port

 

 

 

Feed and

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Expansion Cistern

 

 

 

 

 

 

 

 

 

 

 

 

energised closed when pump

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

activated

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Two port

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

normally open motorized valve controlled

 

 

Double Feed

 

 

 

 

 

 

 

 

 

 

 

 

by cylinder thermostat and programmer

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

indirect cylinder

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heat Leak radiator

Thermostatic radiator valves

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Circulator and

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

to provide temperature zoning

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

with two full way lock

 

 

isolating valves

 

 

 

 

 

 

 

 

 

 

 

 

 

 

shield valves

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Two port

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

normally open motorized valve

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

controlled by room thermostat

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

and programmer

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Two channel

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Yeoman High

 

 

 

 

 

 

 

 

 

 

programmer

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Output Boiler

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

installed to

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BS8303, ADJ and

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

these installation

High limit pipe thermostat

 

 

 

 

 

 

 

 

instructions

 

 

 

 

 

 

 

 

Low limit pipe thermostat

 

 

 

 

 

 

 

 

to bring on circulator in an

 

 

 

 

 

 

 

 

to prevent the pump coming on until a minimum temperature is reached

 

 

 

 

 

 

overheat situation

 

 

 

 

 

 

 

 

 

 

 

 

 

 

28

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Yeoman DEVON 50 manual Feed Expansion Cistern

DEVON 50 specifications

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