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MCA 35
15/06/12 - 300022160-001-01
Connect a safety thermostat if the heating circuit is for
R
underfloor heating.
Remove the bridge.
4
Connect the wires from the safety thermostat to the
4
connector.
Connecting an additional circuit to the AD249 option.
T
Connect the heating pump (circuit A).
Y
If underfloor heating is being used, put a safety
thermostat in place after the heating pump. The
safety thermostat will shut down the heating
pump in the event of overheating.
Low loss header.
U
Connect the DHW tank anode.
I
CAUTION
4
4
Connect the heating pump (circuit B).
O
Connect the 3-way valve (circuit B).
P
Connect the DHW sensor (Package AD212).
a
Connect the domestic hot water looping pump to the
z
AUX outlet on the AD249 option
Do not connect anything to the terminal block.
e
Install the expansion vessel on the heating return pipe
z.
¼ See chapter: "Connecting the expansion vessel",
page 22
If the tank is fitted with a Titan Active
System® impressed current anode,
connect the anode to the inlet (+ TA on the
anode, - on the tank).
If the tank is not fitted with an impressed
current anode, put the simulation
connector in place (delivered with the DHW
sensor - package AD212).
4. Installation
37
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