
INSTALLATION
Mini
--- Installation & Servicing
22
24 FUNCTIONAL FLOW DIAGRAM
Mini C24, Mini C28, Mini C32
4
L
N
Programmer
Room
thermostat
Main
control pcb
Ignition pcb
Fan
Air pressure switch
CH flow
switch
DHW flow
switch
Pump
DHW temp. probe
Ignition
electrodes
Detection
electrode
bn
rd
rd
bk
bu
bn
CH temp. probe
3
19
20
28
29
bk
bu
bk
8
9
bu
bn
Three way
5
7
bk
bn
6
div. valve
bu
wh
16
17
30 31
26
27
bk
bk
120
122
rd
rd
11
12
13
14
15
bn
bu
bk
bn
bu
bn
bu
bk
bn
bu
101
102
103
104
105
Gas Valve
bk
22
23
gy
(modulation coil)
119
118
117
108
106
107
110
109
bu
bk
vt
og
bu
bk bu bn
Safety
thermostat
Gas Valve
(on--- off operators)
113
114
115
111
112
wh
ye
rd
17
P.C.B. #1
P.C.B. #2
25 FUNCTIONAL FLOW DIAGRAM
Mini S24, Mini S28
4
L
N
Programmer
Room
thermostat
Main
control pcb
Ignition pcb
Fan
Air pressure switch
CH flow
switch
Pump
Ignition
electrodes
Detection
electrode
bn
rd
bk
bn
CH temp. probe
3
28
29
bk
bu
8
9
bu
bn
bn = brown
bu = blue
bk = black
wh = white
rd = red
gy = grey
gn = green
ye = yellow
vt = violet
og = orange
gnye = green/yellow
30 31
26
27
bk
bk
120
122
rd
rd
11
12
13
14
15
bn
bu
bk
bn
bu
bn
bu
bk
bn
bu
101
102
103
104
105
Gas Valve
bk
22
23
gy
(modulation coil)
119
118
117
108
106
107
110
109
bu
bk
vt
og
bu
bk bu bn
Safety
thermostat
Gas Valve
(on--- off operators)
113
114
115
111
112
wh
ye
P.C.B. #1
P.C.B. #2
IN
S
T
A
L
L
A
T
IO
N