Lampoassa VMI 6-17 Instructions For Use, Installation And Maintenance Download

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100% GEOTHERMAL HEAT

INSTALLER MANUAL

•

External supply is connected to terminals A1 and A2.

•

Terminals 15 and 16 are connected to geothermal heat pump and
interrupt the heating element’s supply with respect to the phase the
current value of which is exceeded.

•

Each phase must be lead through the relay using the dedicated hole
inside it: L1 for relay 1, L2 for relay 2, L3 for relay 3

No other connections with relay are necessary.

4.3.4. Electrician’s checklist

Check that

•

all phases going to the switchboard are in the correct phase

sequence

•

the master fuse is of sufficient size

•

the ground source heat pump’s fuse size is correct, type: slow (C

curve)

•

if necessary, current monitor has been installed to the building’s
master electrical switchboard (part-power models)

If the ground source heat pump is started for the first time without
pre-heating, compressor will be damaged. Fill the storage tank with
water and prevent the compressor from starting by pressing down the
red compressor motor circuit breaker. Switch on the ground source heat
pump’s power supply, the electric heating element begins to heat the
water contained in storage tank. A regulator alarm goes on and the text
“Compressor 1 circuit 1 some motor protection gone off. Check motor
protection F1, F2 or F3” appears on the display. Later another regulator
alarm goes on and the text “Resistor functioned in full power system”
appears. These alarms do not require taking any measures. Starting of
the compressor is allowed after six hours of pre-heating.

NOTE! A COMPRESSOR STARTED WITHOUT PRE-

HEATING IS NOT COVERED BY WARRANTY!

4.4. Commissioning

Before commissioning, check that:

•

the heating system has been connected, filled and de-aerated

appropriately

•

the ground circuit has been installed, filled and de-aerated

appropriately

•

electrical connections have been made appropriately and the

outdoor sensor (and optional room sensor) has been installed

•

after preventing the compressor from starting, water in the

storage tank has been heated by the electric heating element for
at least 6 hours

Possible problems during startup

Problem

Cause

Solution

Fuses always blow
when the compressor is
started.

You are using the wrong
type of fuse.

Check that the fuse
is automatic: C or D /
ceramic fuse: SLOW or
with a snail icon.

Temporary connections
at the site are causing an
overload of the fuses

Reduce load.

The heat collection
circuit pump does not
start.

The regulator may not be
getting any power.

Check the regulator fuse.

The regulator is not au

thorised to start the pump.

Check the measured/set
values.

The shut-off valves are in
the fill position.

Check that the de-
aeration and fill valves
are in the closed position
and that the intermedi

ate valve is open.

The heat collection
circuit’s water circulation
pump motor protection
switch has gone off.

Reset the motor protec

tion switch and check
the set values from
electrical diagram.

The compressor runs
for a little while and
the evaporator pressure
switch goes off.

There may still be air in
the heat collection circuit.

De-aerate the heat col

lection circuit.

There may be a leak in the
refrigerant circuit.

Contact the equipment
installer or dealer.

The fluid level in the
heat collection circuit fill
container drops suddenly
after startup.

There is a leak in the
system (the smell of ethyl
alcohol or glycol is strong),
there is a leak in the heat
collection circuit or there
is still air in the circuit.

Check the condition of
valves in the de-aeration
group, air valve and the
shaft seal on the ground
circuit pump, check the
condition of heat col

lection circuit extension
joints, or de-aerate.

Motor protection
switches go off when
starting.

The compressor or the
ground circuit pump is
short-circuited or one
of the phases is not
activated.

Check electrical connec

tions.

The fuses in the master
switchboard of the build

ing have blown or are
faulty.

Check and replace fuses
as required.

The maintenance menu section Manual control allows manual control of
compressors, pumps and valves. This facilitates troubleshooting process
and may be of help in case of starting problems.