Install Instructions

6 of 12
Reference Applications PC 705-2
Drawing 1/705-2: Radiant Floor Heating
Drawing 2/705-2: Radiant Floor Heating with DHW generation
Outdoor
Sensor
Boiler
Sensor
Supply
Sensor
Priority Zone Switch
set to OFF
120 V (ac)
PC
705-2
Expansion Switch
set to Master
Mode Switch set to
Reset
M
MMM
TTT
Zone 4Zone 3Zone 2Zone 1
END
SWITCH
A
Zone 4Zone 3Zone 2Zone 1
Taco Zone Control ZVC404-EXP
END
SWITCH
B
T
Boiler
Pump
Injection
Pump
Boiler
Pump
System
Pump
Injection
Pump
120 V (ac)
Outdoor
Sensor
Boiler
Sensor
Supply
Sensor
Priority Zone
Switch set to ON
DHW
Tank
T
T TT
POWER
Zone 4Zone 3Zone 2Zone 1
INPUT
END
SWITCH
ZR
X
X
ZC
Zone 4Zone 3Zone 2Zone 1
Taco Zone Control SR 506-EXP
Zone 5 Zone 6
Zone 5 Zone 6
T
PC
705-2
A
Expansion Switch
set to Master
Mode Switch set to
Reset