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Temporary Bypass C-35 / C-56 
Wiring Modifications

These simple wiring modifications provide a temporary heating solution until the C-35 / C-56 can be replaced.

All wiring should be isolated before making amendments and should be carried out by a competent person.

The underfloor heating water temperature should already be commissioned to provide adequate heat output without overheating the floor finish.

Please consult Uponor if any doubt exists.

Below is a typical existing wiring detail which applies to
C-35 and C-56’s that create a heat demand.

Controller (C-35 / 56)
EWiring1


Three (3) simple wiring modifications can be made to simulate the C-35 demand relay operations. 

Option 1 

Permanent Demand Signal

• Label all manifold actuators according to their manifold loop position.

• Remove manifold actuators.

• Remove the relay wires and join permanently using a wiring block.

System will be permanently switched ON.

Manifold loops will be controlled as a single zone and ALL manifold actuators MUST be removed to
provide heat to ALL loops.
EWiring2


Option 2

Manual Switch Demand Signal

• Label all manifold actuators according to their manifold loop position.

• Remove manifold actuators.

• Remove the relay wires and wire to a manual switch.

 System can manually be switched ON/OFF.

Manifold loops will be controlled as a single zone and ALL manifold actuators MUST be removed to
provide heat to ALL loops.

EWiring2

EWiring3A


Option 3

Thermostat Switch Demand Signal

• Label all manifold actuators according to their manifold loop position.

• Remove manifold actuators.

• Remove the relay wires and wire to a volt free switching thermostat. Example given is the TP5000.

• Thermostat should be placed in a suitable location to regulate the demand based on the air temperature.

• No additional power supply cabling is required if a battery powered thermostat is used.

System is controlled by the thermostat
air temperature settings.

Manifold loops will be controlled as a single zone and ALL manifold actuators MUST be removed to 
provide heat to ALL loops

EWiring4A

tp5000opt


TP5000 Programmable Room Thermostat

Uponor Product Code 1002131

Uponor Products are Available
From your Local
Plumbing & Heating Trade Outlets

 
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