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The Therafix consists of:
•Valve housing angle pattern for wall connection or straight pattern for floor connection
•TRV valve insert in the supply
•Verafix-E insert in the return
•Radiator connections
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•Valve housing made of brass, matt nickel-plated
•Valve insert made of brass with O-rings and soft sealings made of EPDM
•Radiator connections made of brass
•Protection cap made of brass, nickel-plated
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The Therafix is used to connect compact radiators or uinversal radiators (6-point radiators) with 50 mm connection distance to oneor two-pipe hydronic heating systems.
Radiators connected with a Therafix can be drained or filled, even when the system is operating. Therafix is equipped with a TRV insert in the supply, a pre-settable lockshield insert in the return and an M30 x 1.5 thermostat thread.
The Therafix is compatible with all Honeywell radiator thermostats with M30 x 1.5 connection.
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•One solution for radiator connection: valve with integrated thermostatic insert and pre-settable lockshield insert
•Functions: control, pre-setting, drain, shut-off
•When radiator is drained the supply riser tube inside the radiator is automatically also drained
•Robust valve housing made of corrosion resistant brass
•Available for wall or floor connection
•Valve is supplied with suitable connections for most compact or universal radiators
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Medium |
Heating water |
|
pH-value |
8...9,5 |
|
Operating temperature |
max. 130°C (266°F) |
|
Operating pressure |
max. 16 bar (232 p.s.i.) |
|
kvs-values |
0,6 |
(two pipe) |
|
1,7 |
(one pipe) |
Thermostat thread |
M30 x 1.5 |
|
Closing dimension |
11,5 mm |
|
Copyright © 2001 Honeywell AG • All rights reserved |
EN0H-0172GE25 R1001 |
THERAFIX
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The Therafix connects individual radiators to the heating loop. Together with a radiator thermostat, e.g. Thera-3 (not supplied with the valve) the Therafix controls the amount of heating water flowing through the radiator depending on the ambient room temperature. When the temperature increases the sensor inside the thermostat expands and acts onto the valve spindle of the thermostatic insert of the Therafix. The valve is closed and the flow through the radiator is throttled. When the temperature decreases the sensor contracts and the spring-loaded thermostatic insert opens again – more heating water can flow through the radiator.
The radiator is pre-set, drained or shut-off over the lockshield insert integrated into the return of the valve. Pre-setting allows throttling the flow through a radiator to realize a hydronic balance and is done with a 4 mm Allan key.
The draining function allows draining of the radiator over the Therafix. A special draining adapter is required, please refer to ‘Accessories’ further below. The riser tube inside the radiator is also drained during the draining process.
The shut-off function separates the radiator from the heating loop, e.g. for removal.
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Fig. 1. Therafix angle (wall)
NOTE: All dimensions in mm unless otherwise stated.
Fig. 2. Therafix straight (floor)
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|
Pipe |
Radiator |
|
|
|
|
Item |
DN |
kvs-value |
OS-No. |
|||
connection |
connection |
|||||
|
|
|
|
|||
|
|
|
|
|||
For two-pipe systems |
|
|
|
|
|
|
Angle (Wall connection) |
3/4" external |
3/4" external |
15 |
0,6 |
V2474XE0020 |
|
Angle (Wall connection) |
3/4" external |
1/2" internal |
15 |
0,6 |
V2474YE0015 |
|
Straight (floor connection) |
3/4" external |
3/4" external |
15 |
0,6 |
V2474XD0020 |
|
|
|
|
|
|
|
|
Straight (floor connection) |
3/4" external |
1/2" internal |
15 |
0,6 |
V2474YD0015 |
|
For one-pipe systems |
|
|
|
|
|
|
Angle (Wall connection) |
3/4" external |
3/4" external |
15 |
1,7 |
V2464XE0020 |
|
Angle (Wall connection) |
3/4" external |
1/2" internal |
15 |
1,7 |
V2464YE0015 |
|
|
|
|
|
|
|
|
Straight (floor connection) |
3/4" external |
3/4" external |
15 |
1,7 |
V2464XD0020 |
|
Straight (floor connection) |
3/4" external |
1/2" internal |
15 |
1,7 |
V2464YD0015 |
EN0H-0172GE25 R1001 |
2 |
Honeywell AG • All rights reserved |
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