Loading unit

LK 810 ThermoMat 2.0

• Improved regulation

• Compact design

• High efficiency pump from Grundfos / Wilo

TECHNICAL DATA

Voltage

230 VAC 50 Hz

Power consumption

G: 5-52 W, depending on pump speed

W: 3-75 W, depending on pump speed

Max. boiler efficiency

65 kW at 20 °C ΔT

Max. working pres-

sure

0.6 MPa (6 bar)

Working tempera-

ture

G: Min. 5 °C/Max. 110 °C

W: Min. 5 °C/Max. 95 °C

Return temperature

55 °C, 60 °C, 65 °C or 70 °C

Ambient tempera-

ture

G: Min. 0 °C/Max. 70 °C

W: Min. 5 °C/Max. 60 °C

Thread standard

Rp - female thread

Media

Water - Glycol mixture max. 50%

Circulating pump

Wilo Para /8 SC FS14

Grundfos UPM3 Auto xx-70

Material, valve body

Brass EN 1982 CB753S

Material, insulation

Expanded Polypropylene EPP

Flow

Max. 5900 l/h

LK 810 ThermoMat 2.0 is a loading unit for heating applications

with solid fuel boilers and storage tanks. The loading unit is in-

tended to ensure a high return temperature as well as an optimal

temperature stratification in the storage tank, thus increasing the

efficiency of the system. Tarring and condensation are prevented

which prolongs boiler life.

The LK 810 ThermoMat 2.0 is a compact design with an integrated

low-energy circulating pump and a thermic loading valve that regu-

lates on two ports. The loading unit has three ball valves to simplify

installation and maintenance, three thermometers that allow for

simple control of the loading process and an insulation to minimize

heat loss. The loading unit is available in two versions - with or

without check valve. With a check valve the functions described

under phase 4 will be obtained. The loading unit is reversible and

can easily be adapted for mounting to the right or left of the boiler.

Thanks to the three ball valves any part can be changed without

draining the system in case of servicing.

LK 810 ThermoMat 2.0 is also available with a circulating pump

that is controlled by a PWM-signal. For more information please

contact our sales department.

THE FUNCTION OF THE LOADING UNIT DURING THE

DIFFERENT PHASES OF HEATING:

1. HEAT UP PHASE

The water circulates between boiler and

loading unit while the temperature of the

boiler is rising.

2. LOADING PHASE

The thermostatic element starts to open

and allows return water from the storage

tank to be mixed with supply water before it

returns to the boiler. The return tempera-

ture to the boiler is kept constant.

3. END PHASE

The thermostatic element is fully open and

the bypass is closed. This results in an opti-

mal transfer of heat from the boiler and the

storage tank is filled with supply water.

SELF-CIRCULATION WITH CHECK

VALVE

Self-circulation will be obtained as soon

as the fire has gone out and the circulat-

ing pump has stopped. The remaining hot

water is loaded to the storage tank. In case

of power failure or pump breakdown the

check valve automatically opens to allow

self-circulation. The check valve also stops

recirculation from storage tank to boiler.

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