Description
R4500 is a pre-programmed digital electronic regulator that can be configured to control the compensated set of the system flow temperature during winter heating (radiators, fan coils, radiant systems) and to control the fixed point set during summer air conditioning (fan coil systems only, not applicable for radiant systems).
The control action is activated by a demand from the room thermostat or dedicated ON/OFF command, which leads to the closure of a digital input in the R4500 controller. From this, the logic provides for the activation of the system pump control and possibly the boiler/heat pump control.
Programming and normal settings are made using the buttons on the front panel. Everything is shown on the display.
The R4500 device allows management by time bands, with the subdivision of each day of the week into periods of time (time bands) in which system control can vary, according to the programming performed, from ON mode (normal operation) to Stand-By (off).
Technical Data
PID action regulator - proportional integral derivative, for controlling mixing valves, or flow regulators, modulating with 3-point signal or 0-10v.
- digital input for remote control (thermostat).
- digital input for summer-winter control.
- on/off control of the system delivery pump and of hot and cold energy production.
- winter modulation by set. fixed or compensated by the external temperature value.
- summer modulation at set. fixed point (only applicable for fan coil systems).
REGULATOR:
Format: 4 DIN - 32 x 74 x 80 mm
Operating temperature: -20 ... +55 °C
Storage temperature: -20 ... +55 °C
Power supply: 100 ... 240Vac
Power consumption: 6VA
LED display 4 digits - 7 segments - 18 icons
Analogue inputs:
1 x NTC for system flow sensor
1 x NTC for outdoor temperature probe
1 x digital dry-contact input for remote thermostat 1 x digital dry-contact input for summer / winter
Analog outputs (0 .. l0Vdc):
1 x for modulating motor
Digital outputs (clean contact - 2A resistive at 240Vac):
1 x for system pump
1 x for 3p.ti motor - OPEN contact 1 x for 3p.ti motor - CLOSE contact
Digital outputs powered at 12Vdc:
1 x for auxiliary relay control (to be provided separately) for primary energy (boiler / heat pump)
PROBES:
Delivery probe per thermowell (thermowell not included)
Measuring element: NTC 10 kO BETA 3435 +/-1%.
Measuring range: -50 ... +110 -e/
Capsule material: Black thermoplastic rubber
Dimensions: 5 x 15 x W 1500 mm
Response time: K=lO" in liquid V=2 m/s
Degree of protection: IP67
External temperature probe with box
Measuring element: NTC 10 kO +/-1% at 25°C
Measuring range: -50 ... +100 -c
Housing material: PA 15% GK, colour RAL 9010
Housing dimensions: 69x75x44 mm
Protection class: IP65
Fast flow probe for thermowell (thermowell not included)
Measuring element: NTC 10 kO BETA 3435 +/-1%.
Measuring range: -50 ... +110 -c
Capsule material: AISI 304
Dimensions: 4 x 40 x W 1500 mm
Response time: K=5" in liquid V=2 m/s
Protection class: IP67
Fast cuff probe (optional)
Measuring element: NTC 10 kO BETA 3435 +/-1%
Measuring range: -50 ... +110 -c
Capsule material: Copper
Dimensions: 4 x 16 x W 1500 mm
Response time: K=5" in liquid V=2 m/s
Degree of protection: IP67
Bracelet: plastic band 7x110 mm
