Airwell AW-WHPMA18-H93 Manual De Instalación página 24

8.7 Application 7
The units are installed in parallel and can be used for cooling, heating and hot water.
6 units can be connected in parallel. Please refer to 9.7.5 for the parallel system electrical control system connection diagram.
The parallel system can control and view the operation of the entire system only by connecting the master to the wire controller;
If the DHW function is required, the water tank can only be connected to the master unit water circuit through a three-way valve,
and controlled by the master unit;
If you need to link with AHS, the AHS can only be connected to the master waterway and controlled by the master unit;
The connection and function of the terminal are the same as the single unit, please refer to the application 8.1~8.6;
1-2
1-n
2 2
16
3 3
Coding Assembly unit
1-1 Outdoor unit: master
Outtdoor unit: slave
1-2...1-n
Y-shape filter
2
Stop valve (field supply)
3
4
Wired controller
Drain valve (field supply)
6
Fill valve (field supply)
7
Balance tank (field supply)
8
8.1 Air purge valve
8.2 Drain valve
Expansion vessel (field supply)
9
P_o: Outside circulation pump (field supply)
10
Collector / distributor (field supply)
11
Domestic hot water tank (field supply)
12
12.1 Air purge valve
Heat exchanger coil
12.2
Booster heater
12.3
The volume of balance tank(8) should be greater than (40*n)L. The drain valve (6) should be installed at the lowest
positon of the system.
The water inlet and outlet pipe joints of each unit of the parallel system should be connected with soft connections,
and one-way valves must be installed at the water outlet pipe;
The Tbt1 temperature sensor must be installed in the parallel system (otherwise unit cannot be started), the
temperature point is set in the balance tank (8). If the balance tank is too large, Tbt2 needs to be increased in order
to improve the control accuracy. Tbt2 is set in the lower part of the balance tank;
AHS
1-1
16
16
2
3
18
6
Coding
13
14
15
16
17
18
19
23
23.1
23.2
24
25
26
FHL 1...n
FCU 1...n
AHS
/
NOTE
20
12
4
13
12.1
12.3
16
12.2
16
10
9
FCU1
8.1 24
25 23
19
26
8.2
23.1 23.2
7
8
FHL1
Assembly unit
T5: DHW tank temp. sensor
Hot water tap (field supply)
P_d: DHW pump (field supply)
One way valve (field supply)
Bypass valve(field supply)
SV1: 3-way valve (field supply)
SV1: 3-way valve (field supply)
Mixing station (field supply)
P_c: zone 2 pump (field supply)
SV3: 3-way valve (field supply)
Tw2: Zone 2 water flow temp. (individual purchase)
Tbt1: Balance tank temp. sensor (individual purchase)
Tbt2: Balance tank temp. sensor (individual purchase)
Floor heating loop (field supply)
Fan coil units (field supply)
Additional heating source(boiler) (field supply)
/
14
15
11
17
----
FCU2 ---- FCUn
11
----
FHL2 ---- FHLn