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3.4 WIRING DIAGRAM AND DIAGNOSTIC POINTS
Return temperature term.
Outdoor temperature term.
Flue gas temperature term.
Flow temperature term.
Combustion fan
Hot water temperature term.
Antifrost term.
Flame detector
Body controller
Flow switch for DHW
Emergency OFF button
Circ. pump
Three-way valve
External
pump
Igniter
Ceramic heaters:
‘A’
‘B’
Water level sensor CH
Gas valve
Overheating switch
Pump speed control
Chronothermostat Rinnai
Thermostat (different brand)
Condensation siphon level sensor
FUSES
(250V 3A)
GROUND
GROUND
COLOUR CODES
R - RED
P - PURPLE
G - GREY
Y - YELLOW
W - WHITE
BK - BLACK
BL - BLUE
BR - BROWN
GR - GREEN