WarmFlow A Series, User Instructions

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The link wire complete with a built-in resistor which is wired into the ‘RT’ (13 & 14) terminals on
the AS01 & AS02 is required in order to give a reading and enable the unit to operate. This link
wire should not be removed.
3.10.4 Digital Outputs
The digital outputs section allows the connection of ancillaries which are turned on or off via the
units controller.
The total rated current of all the outputs together must be less than 3.0
Amps. Items such as immersion heaters and high powered pumps can still be controlled
by the outputs but they MUST be connected via a relay with an external power supply.
The
following outputs can be controlled by connecting into the appropriate connection blocks.
Figure 32 Installer’s Digital Output Connections (AS01 & AS02)
Figure 33 Installer’s Digital Output Connections (AS03)
3 Port Motorised Valve –The 3 Port Motorised valve is detailed in section 3.9. The valve actuator
is 230V ac and has 3 wires, a brown, a blue and a white wire. The brown wire is the permanent
live to the valve and should be wired into the permanent live terminal (17 - AS01 & AS02, 15 -
AS03). The white wire is the switched power which powers the valve to the DHW position and
should be wired into the 3 Way Valve control terminal (18 - AS01 & AS02, 16 - AS03). The blue
wire is the neutral and should be wired into the neutral terminal (19 - AS01 & AS02, 17 - AS03).
Auxiliary Pump – This output is for controlling an auxiliary pump which may be used to activate
an auxiliary DHW pump. The pump live should be wired into the Aux pump live terminal (21 -
AS01 & AS02, 19 - AS03). The pump neutral and should be wired into the Aux pump neutral
terminal (20 - AS01 & AS02, 18 - AS03). This output is protected with a 3 Amp fuse.
Electric Heater Stage 1 (Immersion) – This output (230Vac) is for controlling an immersion
heater in the DHW storage cylinder or an in-line heater fitted in the heating pipework. As the
immersion heater will have a high electrical load, it must be wired via a relay or contactor
(240V) with an external power supply
. The live output terminal (22 - AS01 & AS02, 20 - AS03)
and neutral terminal (23 - AS01 & AS02, 21 - AS03) should be wired to the coil of the relay which
then will switch the external power supply to the immersion heater. Cable cross sectional areas
3 WAY
VALVE
PERM LIVE
3 WAY VALVE
CONTROL
AUX PUMP
ELEC HEATER
(STAGE 1)
3 WAY
VALVE
PERM LIVE
3 WAY
VALVE
CONTROL
AUX PUMP
ELEC HEATER
(STAGE 1)