Underfloor Heating Installation One Large Zone

 

Installation

Read this entire document first!

•

 

 

Pipe distance for concrete floor is c/c 200 mm to c/c 300 mm and for timber suspended floors

c/c 200 mm.

•

 

 

Pipe to be 100 mm from the walls. Always go with flow to the cold spots first. See hand sketch

for typical layout. Max loop length is 110 m.

•

 

 

Max loop length is 110 m. If the pipe comes in a 200 m coil, it is sometimes much easier to

work with the pipe if cut in half, ie 2 pcs of 100 m coils. Also we recommend two people for

fitting the pipe, one person that holds the coil and another person to clip the pipe into the

insulation.

•

 

 

Fix the pipe to the insulation with the clips provided. You need approximate 1 to 2 clips per

metre of pipe.

•

 

 

The manifold and control pack should always be located centrally in the building.

•

 

 

The TP5000 room thermostat timer controls the pump. Note, see system layout provided in

this document for typical layout. Also, see wiring diagram provided. The system needs to

have independent control from the boiler, ie S-plan system with a two port valve.

•

 

 

Try to use all the pipework supplied. You will usually have waste. The pipe is marked every

metre so you know when it is time to go back to the manifold. The 50 m and 100 m loops on the

hand sketch are only rough estimations on what you will use.

•

 

 

Pipe is normally not laid under Kitchen and Utility units.

•

 

 

We recommend that you first install the manifold and the control pack as instructions provided.

To fit the pipe to the manifold, cut the pipe end squarely using the plastic pipe cutter. Reround

the pipe end with the calibration tool provided, place the nut over the pipe, then the olive

and finally push in the insert into the pipe and then attached to the manifold. The manifold is

normally fitted 1 m above the floor level.

•

 

 

If the pipe is kinked when bending, the pipe should be straightened and rearranged so that the

location of the kink remains in a straight length.

•

 

 

Note the lengths of pipe fitted to each circuit, pipe is marked every metre.

•

 

 

Note also the room, which each circuit applies.

•

 

 

Prevent people from walking over the pipes, keep tools etc away from the pipes.

•

 

 

Fill the system as instructions provided. Do not fill from the boiler filling loop.

•

 

 

It is important to purge the pipework from the boiler to the manifold, to avoid air being

introduced into the underfloor heating system.

•

 

 

Hardwood timber flooring must be conditioned before fixing.

•

 

 

Screed or chipboard flooring should be laid immediately after the pipe laying to protect the

pipe.

•

 

 

Balance the loops as suggested in the instructions.

1. Installation (continued)