Set point thermostatic regulating unit with primary circuit fluid distribution kit - 182 series - Caleffi

The Caleffi thermal regulating unit with primary circuit distribution kit has been developed for use in mixed installation solutions comprising both radiant panels and radiators, in conjunction with distribution manifolds for radiant panels.
The set point regulating unit performs the function of keeping the flow temperature constant, at the set value, for the medium distributed in a low temperature system for floor radiant panels.
In this particular series, the temperature is regulated by a specific hydraulic unit equipped with a thermostatic three-way valve with a built-in sensor.
The function of the kit is to distribute a portion of the medium flowing from the primary boiler circuit to the heating elements.
It is supplied complete with manifolds with built-in shut-off and regulating valves and an adjustable differential by-pass kit for the primary circuit. The latter accessory is essential when there is a primary circuit circulation pump and the radiator circuits are controlled by thermostatic or thermo-electric valves.
Lastly, according to requirements and preferences, it is possible to add a Class A ALPHA 2L 25-60 pump.

Technical specifications
Materials
Regulating unit with thermostatic three-way valve
Body: brass UNI EN 1982 CB753S
Screw: brass UNI EN 12164 CW614N
Obturator: PSU
Seals: EPDM
Flow adapter unit
Body: brass UNI EN 1982 CB753S
Primary circuit by-pass kit
Body: brass UNI EN 1982 CB753S
By-pass valve: PA6G30
Spring: stainless steel
Primary circuit distribution manifolds
Flow manifold
Body: brass UNI EN 1982 CB753S
Flow rate regulating valve
Obturator: brass UNI EN 12164 CW614N
Hydraulic seals: EPDM
Return manifold
Body: brass UNI EN 1982 CB753S
Shut-off valve
Obturator shaft: stainless steel
Obturator and seals: EPDM
Springs: stainless steel
Knob: ABS

Performance
Operating fluids: water, glycol solutions
Max. percentage of glycol: 30%
Temperature regulation range: 25 – 55°C
Accuracy: ±2°C
Primary inlet max. temperature: 90°C
Max. working pressure: 4 bar
Panel manifold differential by-pass setting (code 182000, optional):
25 kPa (2,500 mm w.g.)
Primary circuit differential by-pass setting range: 2 – 30 kPa (0.2-3 m w.g.)
Primary circuit manifold average inner diameter: Ø 20 mm
Liquid crystal digital thermometer scale: 24 – 48°C
Pressure gauge scale: 0 – 10 bar

Connections:
- primary circuit: 1” F
- to regulating unit: 1” F with nut
- panel circuit branches: ¾” for coupling with adapter code 675850
- distance between centres of branches: 50 mm
- primary circuit manifold branches: 3/4” M - Ø 18 mm
- distance between centres of branches: 50 mm