Smartcirc OPTIMO

Domestic Circulators

Description

High efficiency wet rotor circulators with LED display and permanent magnet technology are designed for use in heating systems and solar systems as well as for boiler storage loading.

Main areas of use

Heating, air-conditioning and industry systems as

• dual pipe system

• underfloor heating

• boiler/primary circuit

• storage charging circuit

• solar systems and heating pumps

You can set 3 different control modes via the potentiometer on the axial terminal box. Proportional pressure, fixed speed and constant pressure can be adjusted continuously variable. The display indicated power consumption in [W] watts. Once the potentiometer is turned, the flashing display first indicates mode of operation and value of set head in [m] meters. If not further turned the display shows the value of power consumption (Watt) and the symbol of the control mode permanently.

The sound pressure level is < 45 dB (A).

• manual start-up feature

• smooth running

• very low energy consumption

• integrated night economy feature

• air-vent screw

• space-saving axially integrated terminal box

• automatic adjustment to pressure conditions

• cataphoretic coated pump housing

• compact design

• convenient operation

Specification

Model	Smartcirc OPTIMO 25-8/130	Pump housing Grey-cast iron 0.6020 Impeller Polyamide (PA - GF 35) Shaft Ceramic Bearing Ceramic Bearing plate Stainless steel 1.4301 Can Stainless steel 1.4301
Product Code	CPH7250
Max Head	8.0 m
Max Flow	4.5 m3/h
Motor Rating	6 - 64 W (230 V 50/60 Hz)
Media Temperature	+2 °C to +110 °C
Protection Class	IP 42
Insulation Class	F
Nominal Pressure	PN10
Threaded Connection	1.5”	L1	L2	L3	L4
Connection Pipe	1.0”	130 mm	98 mm	127 mm	163 mm

Mode of operation Δp control in heating systems

When thermostatic valves in systems with a long main supply heating pipe (likely for radiator systems) close, the total flow drops. This results in lower pipe resistance in this main pipe, which means the pump has to create lower head. Using proportional pressure mode PP is the preferred setting for such heating systems, as here the pump decreases head at lower flow. If the main supply heating pipe has not to be taken into consideration, because it is short or has its own pump (likely for underfloor heating systems with in mixing units integrated pumps), the best mode to use is constant pressure mode CP. In such heating systems, it is important always to have constant pressure for the radiators or ufh-circuits, as the pressure loss in the main pipe is not considered and all other consumers are installed in parallel, which does not influence the maximum pressure loss.

Control modes for use in solar systems

As a rule, solar systems are designed for constant flow. High differential pressure at low flow is required. The fixed speed mode is recommended for this. With this setting, the pump generates the highest

possible differential pressure. In the case of solar systems with a variable flow rate, the setting „Constant

pressure“ can alternatively be selected. Here, the differential pressure is kept constant regardless of the respective hydraulic situation of the solar system. The „Proportional pressure“ control mode may only be selected if the solar pump is used in a heating system with thermostatic valves.

Important: High efficiency pumps with electronically commutated motor (ECM) and integrated automatic control - such as the Smartcirc Optimo - cannot be operated via external controls, which control pumps via wave packet or leading edge control. The BB2 range is recommended for such cases.

Flow media

• heating water as per VDI 2035

• media with a max. viscosity of 10 mm2/s

• operating data must be checked above 20% glycol

• pure, thin, non-aggressive and non-explosive, mineral oil-free media without solid or long-fibre components

Temperature range Ambient temperature: 0 °C to +40 °C Temperature class: TF 110 Media temperature: +2 °C to +110 °C Ambient temperature To avoid condensation forming in the terminal box and stator, the media temperature must always be the same or higher than the ambient temperature. Motor protection External motor protection is not required.	Ambient temp.	Media temp. min.	Media temp. max.
	0	2	110
	10	10	110
	20	20	110
	30	30	95
	35	35	90
	40	40	70

Integrated night economy feature

When the automatic night economy feature is activated, the circulation pump switches between normal mode and economy mode (characteristic curve MIN). The flow temperature is detected by a temperature sensor, the pump reacts accordingly. For this, it is necessary for the circulation pump to be installed in flow.

Minimum inflow pressure

Please determine the minimum inflow pressure for corresponding temperature from the following table.

Media temperature	< 75 °C	> 90 °C
Minimum inflow pressure	0.05 bar	0.28 bar

We reserve the right to make changes without prior notice.