Component Parts Of The Heat Pump; Lwm Model - Bosch EHP 6-11 LW User And Installation Manual

Component parts of the heat pump

Component parts of the heat pump

LWM model

Three-way valve
The valve switches between heating
the heating water and hot water.
Venting nipple
The nipple is used to vent the heating
water in the hot water cylinder.
Hot water cylinder
The cylinder is double-shelled and
holds approximately 163 litres of hot
water and 57 litres of the heating
water.
Electric cassette
The electric cassette is used to
provide extra output in cold weather
conditions, with large water con-
sumption and at hot water peaks.
Reset button
Press in the button if the overheat
protector on the electric cassette has
tripped. The button is located on the
side.
Condenser (not visable)
The condenser condenses the
vapour to fl uid again and transfers
the heat to the heating system.
Circulation pump
The pump ensures the heating water
circulates within the heating system.
Compressor
The compressor increases the
pressure of the refrigerant. The
temperature of the vapour increases
from 0ºC to approximately +100ºC.
The compressor is insulated to
reduce the noise level.
Flexible hoses
The hoses counteract vibrations in
the heat pump.
Sight glass
Sight glass to check the level in the refrig-
erant circuit. Air bubbles must not form
in the sight glass when the heat pump is
running. However, there might be bubbles
when the heat pump is started and stopped.
8
Electrical connections
Connections for the mains supply
as well as sensors.
Control panel
The control panel has a back-
ground lit menu display with four
rows of text information, three
buttons and a dial.
Distribution box
The distribution box is enclosed.
It houses a reset function for the
motor cut-out as well as miniature
circuit breakers (MCB) for the
heat pump and electric cassette.
Heat transfer fl uid pump
The pump is insulated and
features an anti-corrosive fi nish.
It ensures the heat transfer fl uid
circulates from, e.g. the rock to
the heat pump.
Evaporator
The evaporator evaporates the
refrigerant to gas and transfers
heat from the heat transfer fl uid to
the refrigerant circuit.
Control unit
The control unit is enclosed. It
controls and monitors all heat
pump functions.
Expansion valve
Lowers the pressure of the refrig-
erant that enters the evaporator
and collects energy from, e.g. the
rock.