Primary (Central Heating) Pipework - Heatrae Sadia ElectroMax Installation & Servicing Instructions Manual

5.8 Primary (Central Heating) Pipework

and return must be in 22mm o/dia. pipe.
to enable the Electromax boiler to be isolated
from the primary circuit for maintenance and
servicing. Connections to the isolating valves
are 22mm compression.
Conventional radiator based central heating
design considerations should be made
in selecting the radiators and circulating
pipework sizes. The maximum output from
the Electromax boiler is 9kW, ensure the
radiator load does not exceed this. NOTE:
The Electromax boiler is dedicated to the
space heating only, the domestic hot water
is heated by separate immersion heaters,
so there is no requirement to allow a hot
water loading factor in designing the primary
system.
Diagram 12
Primary Connections
Primary Flow
Isolating Valve
Primary Return
Isolating Valve
Filling Loop
Isolating Valve
(Primary Side)
18 Installation & Servicing Instructions
following installation.
A filling loop is provided within the
Electromax casing to fill the primary
circuit directly from the cold water supply.
When the system is full and correctly
loop should be disconnected from the
primary circuit.
Filling Loop
Isolating Valve
(Cold Water Side)
Filling Loop
Flexible
Connection
Hot Water
Outlet
Connection
Cold Water
Inlet Connection