Instruction manual

69
13.17 - Multiwire
wiring diagram
WARNING!!! Label all wires prior to
disconnection when servicing controls.
Wiring errors can cause improper and
dangerous operation! Verify proper
operation after servicing Failure to
comply with this warning can cause
extensive property damage, severe
personal injury or death!
13 - MAINTENANCE
LEGEND TO FUNCTIONAL AND
MULTIWIRE DIAGRAM
ALA - Alarm output
CM - Power control board
CR - Remote command (only for 45WE
and 45AE models)
EA - Ignition electrode
ER - Flame detection electrode
EPO - External pump (REQUIRED FOR
MODEL 45AN)
EV3V - External three way valve (optional)
F1 - Fuse 2Amps
FPR - Flue pressure switch
GS - Spark generator
IG - Main electrical switch
J1 - Six poles connector
J2 - Four poles connector
J3 - Twelve poles connector
J4 - Four poles connector
J5 - Sixteen poles connector
J10 - Ten poles connector
J18 - Height poles connector
U1 - Supply temperature sensor
U2 - Domestic hot water temperature
sensor
U3 - Domestic cold water temperature
sensor
U3 TANK - Storage tank temperature
sensor (optional)
U4 - Outside temperature sensor
U6 - Heating Safety high limit
temperature sensor
U7 - Flue gases temperature sensor with
integrated safety high limit switch
U8 - Return temperature sensor
PO1 - Heating pump
PR - Heating pressure switch
SDC - Electrical connection board
RT1 - Room thermostat connection
RT2 - Room thermostat connection on
remote control “CR” (optional)
VE - Fan
VG1 - Gas valve
V3V - Three way valve
ATTENTION!!! Au moment de l’entretien
des commandes, étiquetez tous les fils
avant de les débrancher. Des erreurs
de câblage peuvent entraîner un
fonctionnement inadéquat et
dangereux. S’assurer que l’appareil
fonctionne adéquatement une fois
l’entretien est terminé.