Rinnai INFINITY REU-3203W, Service Manual

Page: 30 / 64

Infinity REU-3203W - 25 - ©Rinnai
Component
Number
Component
Flow
Chart
No.
Maintenance
Monitor
Item
No.
Wiring
Diagram
No.
Wire
Colour
Resistance (De-
energised)
Voltage
(O=Operational,
S=Standby)
Notes
10
Heat Exchanger
Outlet
Thermistor
9 11
E
2
W-W
30C 6.4-7.8 kohm
45C 3.6-4.5 kohm
60C 2.2-2.7 kohm
75 C 1.6 kohm
105C 0.6-0.8 kohm
Resitances at vari-
ous temperatures
Maintenance Moni-
tor Item 11
explains how water
temperature read-
out in C can be
obtained from a
Controller unit
whilst the unit is
operational.
> 1 MegaOhm
Open Circuit
(defective)
< 1 Ohm
Short Circuit
(defective)
11
Hot Water
Outlet
Thermistor
9 02
E
1
W-W
15C - 11.4 to 14
kiloOhm
Resitances at a par-
ticular temperature
Maintenance Moni-
tor Item 02
explains how water
temperature read-
out in C can be
obtained from a
Controller unit
whilst the unit is
operational.
12 Surge Protector
J
8
W-W
207 - 264 V
(Oand S)
13 Electrical Fuse
J
7
B-Br
207 - 264 V
(Oand S)
14 Transformer
A
2
, A, D
R-R 12 - 21 Ohms 90-110V
BR-GY 2.2 - 3.9 Ohms AC 30 - 50 V (S)
Y-GY 300 - 530 Ohms AC 180 - 220 V (S)
GR-GR
2.4 - 4.3 Ohms AC 12 - 18 V (S)
15
Bypass Control
Device
3 12
B
1
BR-W
DC 2 - 6 V (O)
Maintenance Moni-
tor Item 12
explains how the
position (open,
closed or in
between) of bypass
servo can be deter-
mined from the
Controller display
whilst the unit is
operational.
OR-W
DC 2 - 6 V (O)
Y-W
15 - 35 kiloOhms
R-W
15 - 35 kiloOhms
16 Remote Control 4 06
H
1
BLK-
BLK
DC 11 - 13 V (O,S)
17
Anti Frost
Heaters
J
3
Y-Y
1 kohm at approx
4C
767-883 ohm
J
4
Y-Y
1 kohm at approx
4C
367-450 ohm
607-699 ohm
J
5
Y-Y
625 ohm at approx
4C
367-450 ohm
607-699 ohm
J
1
Y-Y
156 ohm at approx
4C
767-883 ohm
J
8
Y-Y
156 ohm at approx
4C
18
Frost Sensing
Switch
J
2
B-B
< 1 Ohm at approx
4C