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13 - MAINTENANCE
13.16 - 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!
ATTENTION!!! Au moment de l'entretien des
commandes, étiquetez tous les fi ls 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.
LEGEND:
ALA - Alarm output
CM - Power control board
CR - Remote command (optional)
EA - Ignition electrode
ER - Flame detection electrode
EV3V - External three way valve (optional)
F1 - Fuse 2Amps
FPS - 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 (optional)
U6 - Heating Safety high limit temperature sensor
U7 - Flue gases temperature sensor
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
68
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