4
A flow restrictor is fitted within the appliance which limits the
hot water delivery rate to a maximum of 8.0 (±15%) litres/minute
(1.8 gallons/minute)
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or 10 (±15%) litres/minute (2.2
gallons/minute)
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.
Hot Water and Central Heating mode:
When a demand is made for heating by the system controls (i.e. a
programmer or room thermostat), the pump will energise, circulating
primary water around the heating system and the burner will light.
The appliance will operate as necessary to maintain the
temperature of the radiators at the level set by the adjustment of the
Heating Temperature Control.
If the system no longer requires output to maintain the desired
room temperature, the burner will extinguish. The pump and fan will
continue to run for a short period to dissipate the residual heat from
the appliance and then switch off.
The appliance will supply heat to the central heating system as
required.
A demand for hot water at a tap or shower will override the
central heating function for the period of the domestic hot water
demand.
Hot Water Only mode:
The appliance operates to supply only domestic hot water when
the heating temperature mode is fully anti-clockwise, at the position.
