Ideal Boilers mini HE C24 - Functional Flow Diagram; Control Pcb

INSTALLATION
mini HE --- Installation & Servicing
24
24 FUNCTIONAL FLOW DIAGRAM
mini HE C24, mini HE C28,
4
L
N
Main
control pcb
Ignition pcb
Fan
Air pressure switch
CH flow
switch
DHW flow
switch
Pump
DHW temp. probe
bn
rd
rd bkbu
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)
108
106
107
110
109
bu
bk
bn
bu
bu
bk bu
bn
Safety
thermostat
Gas Valve
(on--- off operators)
113114 115
111
112
bu
bn
rd
17
P.C.B. #1 P.C.B. #2
bn
Flue
thermostat
bn
Ignition
electrodes
Detection
electrode
117
118
119
Condensate
trap
INSTALLATION