Connection Of Temperature Sensors - Baxi Solarflo Installation Manual

Fig. 24
Block Wiring Schemes
A.
Solarflo in conjunction with auxiliary heating by boiler - no reheat control
by solar controller.
3A Fused Supply Boiler Terminal Strip
L N E L PL
1 2 3 1 4
1 2 3 4 5 6
7 10 3 3
1 2 3 E G/Y
Cylinder Auxiliary Controls
6 9 2 3 2
1 2 N G/Y BL
Room Stat CH 2 Port Valve
3 2 2 11 12
PE L N A1 N T1
Solar Differential Controller
Solar
Controller
1 L 3
1 2 E
Solar O/Temp Cutout
Note: For Boilers without Pump over run CH Pump Live Supply to 5
B. Solarflo in conjunction with auxiliary heating by boiler - reheat control
via solar controller.
3A Fused Supply Boiler Terminal Strip
L N E L PL
1 2 3 1 4
1 2 3 4 5 6
7 10 3 3
1 2 3 E G/Y
Cylinder Auxiliary Controls
3 2
G/Y BL
CH 2 Port Valve
3 8 2 11 12 7
PE L N A1 N A3
Solar Differential Controller
1 8 3
1 2 E
Solar O/Temp Cutout
C. Solar Cylinder with auxiliary heating by immersion heater.
Boiler Immersion
3 Amp Fused Supply 13 Amp Fused Supply
L N E L N
1 2 3 4 5
1 2 3 4 5 6
3 8 2 11 12 Relay
PE L N A1 N A3
Solar Differential Controller
1 8 3 A3 N
1 2 E 1 5
Solar O/Temp Cutout Auxiliary Immersion Heater Relay
22 Solarflo - Solar Thermal Domestic Hot Water System
Programmer
N E SL L N
2 3 5 1 2
7 8 9 10 Terminal Box (Not supplied)
2 10 1 5
BL BR GR OR
DHW 2 Port Valve
9 1 5 4 2
BR GR OR L N
CH Pump
See Fig. 20 A1 N PE
T2 T4 WMM 11 12
Solar Pump
Programmable Room Stat
N E SL L N
2 3 5 1 2
7 8 9 10 Terminal Box (Not supplied)
2 10 1 5
BL BR GR OR
DHW 2 Port Valve
6 1 5 4 2
BR GR OR L N
CH Pump
2 See Fig. 20
N T1 T2 T4 T5 WMM
E
6
7 8 9 10 Terminal Box (Not supplied)
See Fig. 20
N T1 T2 T4 T5 WMM
4 7 7 5 6
CoM No L N E
Immersion Heater
10.0
10.6
The controller uses precise platinum temperature
E DHW ON CH ON sensors type PT1000.The controller is supplied with
3 sensors. The sensor with black silicone sheathing
3 7 6
must be used for the solar panel sensor.
Installation / cabling of temperature sensors:
Mount the sensors in the pockets provided in the
collector and storage tank. When installing into the
collector panel sensor pocket the sensor should be
3
secured by inserting through the rubber gland provided.
E
The wires of the temperature sensors can be lengthened.
Up to 15m long you need a 2 x 0,5mm
to 50m 2 x 0,75mm
(collector) shielded extension lead must be used.
E
DO NOT run sensor leads adjacent to mains carrying
voltage conductors (at least 50mm separation is
recommended).
Temperature sensors are connected according
to the appropriate terminals, refer to Fig 21.
The sensors are polarity free.
Sensors MUST NOT be connected to the 230/240V~
terminals.
1 2
10.7
1 6
When using the reheat function the operation of the
auxiliary heat input device can be controlled via output
A3 from the controller.
The reheat sensor cable should be connected to
3 terminals T5 of the solar controller and the sensor
element be inserted into the controls pocket at the
E
auxiliary heater level.
A1 N PE
N.B.The maximum switching current of the controller
is 2A so if switching an electrical immersion heater this
11 12 E
MUST be done via a relay (see Fig. 24 Black Wiring
Solar Pump
Scheme C) order accessory code No. 5122765.
If using a boiler for auxiliary input, the output from the
reheat function should be integrated into the boiler
control circuit.
A1 N PE
11 12 E
Solar Pump
Installation of solar controller

Connection of temperature sensors

2 cross-section, up
2 . In the case of long connections
Control of Auxiliary heat input