Electrical Connections - andrews COMBIflo 100/300 Installation, Operation And Maintenance Manual

4.16 ELECTRICAL CONNECTIONS

Isolate the mains electrical supply to the appliance before starting any work and observe all
relevant safety precautions
External wiring to the appliance must be installed in accordance with current I.E.E. Regulations for the wiring
of buildings and to any Local Regulations that may apply.
Th is appliance is designed to operate from a 230V, single phase supply fused at 5 amps. Mains input cable
should be at least 0.75mm
Th e method of connection to the mains electricity supply should facilitate complete electrical isolation of
the appliance. A fused double pole switch or fused spur box serving only the heater should be used.
Th e point of connection and isolation to the mains electricity supply should be readily accessible and adjacent
to the appliance, and should be connected to the mains supply as detailed above.
4.16.1 ACCESS TO THE TERMINAL CONNECTIONS
Open the wiring centre access door of the left hand side to reveal the electrical connections inside (see
illustration below).
4.16.2 REMOTE INDICATORS
Th e appliance has volt free outputs (or can be used with voltages up to 230v), which can be connected to a
Building Management System or a remote indicator panel. Th ese volt free outputs are pre-confi gured to
perform the following functions:
Fault Indication - Immediately after a fault or maintenance warning has been detected by the control system,
an internal relay will activate and close the circuit to indicate that a fault has occurred.
Burner On - When any of the appliances heat engines are in operation, an internal relay will activate and close
the circuit to indicate that at least one heat engine is in operation.
ANDREWS COMBIfl o DRAFT
Th is appliance must be earthed
2 , 3 core cable.
N
230V 50Hz 5A
MAINS E
SUPPLY
L
N
230V 50Hz
SUPPLY TO
AGU2.5
L
OUTDOOR SENSOR
B9 (QAC34)
G+
QAA TYPE
ROOM
CL-
CONTROLLER
(MAX 3)
CL+
BMS VOLT FREE
FLAME INDICATOR
BMS VOLT FREE
FAULT INDICATOR
CL-
OZW672
CONNECTION
CL+
33 GB/IE