REVELL LWRc-8kW Operational Manual

1

AN AIR–WATER HEAT PUMP

FOR HEATING AND COOLING WITH A BUILT-IN

ELECTRIC BOILER

Model: LWRc-8kW

Operational Manual (7.4.2014)

• Read this manual carefully; failure to do so could cause irreversible damage to

your device

• The REVEL Company will not be liable for any damage caused by the

installation or the assembly of the heat pump in a manner that is
in contradiction with this Operational Manual

• The effective ambient air temperature must be between -20 °C and + 43 °C

• The temperature of the water entering the heat pump must not exceed 60 °C

On very cold days the built-in electric boiler or another heat source may be connected

(see the bivalence points on the chart below)

Illustration of the heat pump function

Electric boiler

Compressor

Heat transferred

to water

Expansion valve

Heat exchanger

Hot outlet

water

Return

water

Absorbing heat

from air

2

Important Information

1. In the case of using water or simply an additive mixture, it is necessary to

ensure the continuous operation of the circulator that causes the water to flow
through the LWRc-8kW. It is recommended to use a 5% industrial ethanol as an
additive mixture based on its extending of the freeze function and the radical
reduction in the tear strength of the ice.

2. When operating at low temperatures, the unit automatically provides defrosting,

which is accompanied by the drainage of the defrosted air-humidity condensate
in a volume of 0–1 litres per hour.

3. The device comes equipped with a heating cable that is in operation during

defrosting. It is functional to lead the heating cable loop into a sewer or a
drainage outlet, for example.

4. In the event of the accidental occurrence of poor drainage of the condensate and

the subsequent freezing of the heat pump, it is necessary to defrost the device by
means of a brief external intervention, e.g. using a tent and a heat gun.

It is necessary to protect the heat pump at the inlet of heating water by a
regularly cleaned filter

5. It is possible to purchase an installation kit (USP) for the heat pump that

implements both a protective and an operational function. When installing it
into an existing heating system with the possibility of the temperature reaching
more than 60 °C, its use represents a condition for granting a warranty for the
heat pump.

The Technical and Performance Parameters of the HP

Units

LWRc-8kW

Nominal heating/cooling capacity

kW

8.2/6.2

Power supply for the compressor and the electric boiler

V

2x 230V

Input power

kW

1.9 to 2.1

Operating current /max. current at start-up

A

9.5/63

Compressor

type

Highly-Hitachi-rotary

Coolant medium

R410a

Coolant amount

kg

2.8

Water input and output

G

1" ex

Ventilator noise

dB

51/46/3m

Ventilator power input

W

120

Electric boiler power input

kW

3

Effective working temperature

°C

-20 to +43

Max. output temperature

°C

61

Dimensions (length/width/height)

mm

1030/370/750

Weight

kg

107

Output at A+7/W+35 °C

kW

8.2

COP 7/35

-

4.08

Output at A+2/W+35 °C

kW

6.7

COP 2/35

-

3.41

Output at A-7 °C/W+35 °C

kW

5.15

COP -7/35

-

2.63

3

Heat loss of the house (kW)