Wellea Monobloc
32
Table 4-2.1: Main PCB for hydronic system
Label in
Figure 4-2.1
Code
Content
1
CN5
Input port for solar energy
2
CN4
Output port for transformer
3
CN36
Power supply port for the wired controller
4
CN12
Port for remote switch
5
CN8
Port for flow switch
6
CN14
Port for communication with the wired controller
7
CN19
Port for communication with PCB for refrigerant system
8
CN6
Port for temp. sensors(TW_out, TW_in, T1, T2, T2B)
9
CN13
Port for temp. sensors(T5, domestic hot water tank temp. sensor)
10
CN15
Port for temp. sensors(T1B, the final outlet temp. sensor)
11
DIS1
Digital display
12
S3
Rotary dip switch
13
S1, S2
DIP switch
14
CN34
Output port for deforst
15
CN40
Port for anti-freeze electric heating tape(internal)
16
CN41
Port for anti-freeze electric heating tape(internal)
17
CN25
Output port for external heating source/ Output for operation
18
CN27
Port for anti-freeze electric heating tape(external)/ port for solar energy pump/ output port for re-mote alarm
19
CN37
Port for external circulted pump (P_o)/ pipe pump(P_d)/ mix pump(P_c) / 2-way valve SV2
20
CN24
Port for SV1(3-way valve) and SV3
21
CN28
Port for internal pump
22
CN20
Input port for transformer
23
CN1
Feedback port for temperature switch
24
CN21
Port for power supply
25
FUSE1
Fuse
26
CN2
Feedback port for external temp. switch(shorted in default)
27
CN22
Control port for backup heater/ booster heater
28
CN3
Control port for room thermostat
29
IC18
EEPROM
