Dimplex VFE 20 Installation And Operating Instructions Manual page 44

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Circuit diagram
A1+, A2- DC signal charge control
A1~, A2~ AC signal charge control
Ex RT External room thermostat (optional)
K1 Heater contactor
L1, L2, L3 Phase
LE Fan control
LER Controller charge, discharge
LH Supplementary heating control
L-R Phase controller
L-SH Phase direct control
M1 Fan
N Neutral conductor
N-R Neutral conductor controller
R3
R2
R1
LER
NTC
REL 1
REL 2
REL 3
UI
PTC
REL 4
REL 5
EN-18
STR
TB
A2-
A1+
N-SH
L-SH
A2~
A1~
N
LE
N
L
N-SH
NTC
PE
PTC
REL 1 - 5
R1-R3
R7
R9
STR
TB
TR9
TRG
UI
TRG
TR9*
R7
R9*
M1
2007/A
Electrical connection
Neutral conductor direct control
Residual heat sensor (core)
Protective conductor
Room temperature sensor
Relay 1 - 5 (controller)
Heating elements
Series resistor
Supplementary heating (optional)
Safety thermo controller
Safety temperature limiter
Supplementary heating thermo controller
Ventilation grid thermo controller
Operating panel, display
N-R
1
K1
2
N-SH
3 N
4
N
5 L3
L2
6
L1
7
L-SH
8
N
9 L-R L
PE
11 A1+
A2-
12
A1/Z1~
13
A2/Z2~
14
LE
15
N
16
N
17
18 LH
21
N
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N
L3
L2
L1
PE
0,91...1,43V DC
230V ED%
Ex RT
L