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Bees ton ACER wall-hung c ondens ing boiler 60-180kW
D ESIGN MANUAL
8.4
Example 4
Two ACER boilers serving two variable temperature fully compensating heating zones, each zone fully
controlled independent of the other, using the Beeston Helix control package.
HXMC
Helix main controller
HXPZRS
Helix remote room sensor, heating zone 1
HXPZRS
Helix remote room sensor, heating zone 2
HXOS
Outside sensor
HXFS
Helix flow sensor
HXFS
Helix flow sensor, heating zone 1
HXFS
Helix flow sensor, heating zone 2
HXDHWS
Helix domestic hot water sensor
NRV
Non return valve
SV
Safety relief valve
TPRV
Temperature & pressure relief valve
AAV
Air vent
P1
Heating zone 1 pump
P2
Heating zone 2 pump
P3
Calorifier primary pump
MV1
Heating zone 1, 3 way mixing valve
MV2
Heating zone 2, 3 way mixing valve
P a g e 1 9
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