9
FIxEd Flow tEMPERAtURE contRol
REqUIREd coMPonEntS FoR FIxEd Flow tEMPERAtURE contRol
2.0
2.1
This table should help you in
identifying which components you
need dependent on your choice of
flow temperature control.
More details on each control option
and how they are installed and
electrically wired are given in the
subsequent sections.
Authorised Specialists
Installation, commissioning, maintenance and repairs of all electrical control components shall only
be carried out by trained, competent and qualified specialists in accordance with the national, valid
regulations (Health & Safety, Wiring Regulations, etc) and in compliance with the ordinances stipulated by
the local power authorities.
Sources of Danger
Before opening any component always ensure the system is switched
OFF
at the main heating system
isolation switch.
To clean the components use a dry towel only.
Never clean the unit with water or other solvents (e.g. spirit, acetone).
Never touch any live component with wet hands.
Designated Application
All equipment explained in the following sections is intended for mixing flow and return water to a suitable
mixed water temperature for use with wet floor heating. Modifications or changes to this equipment are
only permitted with the manufacturer’s approval. The manufacturer does not accept liability for damages
arising from misusing the equipment.
Constant Temperature
Component
REHAU Art. No.
Compact Mixer Unit
Thermostatic Mixing
Valve Configuration
Compact Mixer Unit
237092
1x
No
½" Balancing Valve (BV) + ½" TIV (for outputs up to 12kW)
237102
1x¹
No
¾" Balancing Valve (BV) + ¾" TIV (for outputs up to 18kW)
245130
1x¹
No
Bypass Valve
Not supplied
1x
1x
Male iron to copper adapters
Not supplied
No
No
Circulating Pump with 2x isolating valves
Not supplied
No
1x
Manifold Isolating Valves
Incl. with Manifold
Not used
2x
High Temperature Limit Stat
225125
Included
1x
2-Port Zone Valve (22mm) for outputs up to 12kW
230426
1x²
1x²
2-Port Zone Valve (28mm) for outputs 12kW to 18kW
230427
1x²
1x²
1) Only one balancing valves required, size depending on output
2) Only one zone valve required, size depending on output
