Baxi PRIME Series Installation Manual page 11

ELECTRICAL CONNECTIONS IN THE BOILER
230V-50Hz power supply
1: Earth connector
X1-B
2: L (230V)
3: N
X6-B
Not used
PRIME 26-30: Solar sensor connection (TS)
X7-B
PRIME 1.24: DHW tank connection probe (TS)
X8-B
On-Off / R-Bus
X9-B
Service Connection (PC)
X13-B
L-BUS connection
External sensor connection (OS)
X14-B
1: external sensor
2: common
Dip-Switch
1: Maximum heating temperature OFF = 80°C - ON = 45°C (underfloor installation)
J
2: OFF = Maximum power (heating)- ON = Boiler power 50% (heating)
3: OFF = Methane (G20) – ON = Propane (G31)
230V-50Hz power supply
1: Earth connector
X1-A
2: L (230V)
3: N
Pump
1: Earthing
X2-A
2: L (230V)
3: N
3-way valve
1: L(CH) 230V - CH circuit opening command
X3-A
2: L(DW) 230V - DHW circuit opening command
3: N - common
X4-A
Pump PWM signal
Sensor connection
HS: sensor demand for DHW (PRIME 26-30)
RS: CH circuit water return
X5-A
DS: CH circuit water flow
FS: fumes
WPS: hydraulic pressure switch
ST: safety thermostat
X13-A
Not used
X14-A
L-BUS connection
X6-A
Connection of HMI and boiler board - electrical connection board
GNYE
Green/yellow
BN
Brown
BU
Blue (and light blue)
BK
Black
WH
White
YE
Yellow
GN
Green
RD
Red
VT
Violet (purple)
GY
Grey (slate)
– Room Thermostat Connection (REMOVE the jumper to connect a device)
CONNECTIONS IN THE BOILER
11
(B)
(A)
7696306 (01-12/17)