Application; Space Heating - Airwell WELLEA AW-WHPMA04-H91 Installationsanleitung

8.2 Application 2

ROOM THERMOSTAT Control for Space heating or cooling need to be set on the user interface. It can be set
in three ways: MODE SET/ONE ZONE/DOUBLE ZONE. The molobloc can be connected to a high voltage room
thermostat and a low voltage room thermostat. A hydraulic adapter box can also be connected. Another six
thermostats can be connected to the hydraulic adapter box. Please refer to 9.7.6/6. "FOR ROOM THERMOSTAT" for
wiring. (see 10.6.6 "ROOM THERMOSTAT" for setting)
8.2.1 One zone control
Outdoor
1
Modbus
Code Assembly unit
1 Main unit
2 User interface
Balance tank (Field supply)
4
4.1
Automatic air purge valve
4.2 Drainage valve
P_o: Outside circulation pump (Field supply)
5
10 Expansion vessel (Field supply)

Space heating

One zone control: the unit ON/OFF is controlled by the room thermostat, cooling or heating mode and outlet
water temperature are set on the user interface. System is ON when any "HL" of all the thermostats closes. When
all "HL" open, system turns OFF.
The circulation pumps operation
When the system is ON, which means any "HL" of all the thermostats closes, P_o starts running; When the
system is OFF, which means all "HL" close, P_o stops running.
2
RT1
14
15
14
12
16
16
15
Indoor
10
4.1
5
4
4.2
FHL1
Code Assembly unit
12 Filter (Accessory )
14 Shut-off valve (Field supply)
15 Filling valve (Field supply)
16 Drainage valve (Field supply)
19 Collector/distributor (Field supply)
FHL Floor heating loop (Field supply)
1...n
RT 1 Low voltage room thermostat (Field supply)
19
FHL2 FHLn