Wellea Monobloc
31
2
Outdoor Unit PCBs
2.1
Types
Wellea
Mono outdoor units have two main PCBs – one for the hydronic system and one for the refrigerant system. The
hydronic system main PCB is the same on all
Wellea
Mono models. There are three types of refrigerant system main
PCB: one for the 5/7/9kW single phase models, one for the 12kW to 16kW single phase models and one for the 12kW to
16kW three phase models.
In addition to the two main PCBs, all models also have an inverter module and the three phase models also have a filter
board.
The locations of each PCB in the outdoor unit electric control boxes are shown in Figures 4-1.1 to 4-1.7 in Part 4, 1
“Outdoor Unit Electric Control Box Layout”.
2.2
Main PCB for Hydronic System
Figure 4-2.1: Outdoor unit main PCB for hydronic system
1, 2
1
2
3
4 5
6
7
29
28
27
26
25
24
23
8
9
10
11
12
13
14
22
21
20
19
18
17
16
15
Notes:
1.
This PCB is used on all
Wellea
Mono models: 5kW to 16kW, single phase and three phase.
2.
Label descriptions are given in Table 4-2.1.
