Lampoassa ELI 60-90, User Manual

Page: 23 / 62

23
100% GEOTHERMAL HEAT
INSTALLATION INSTALLATION
The sensor is placed approximately 2/3 of the way up to the wall of the
building near the corner. A sensor should not be placed under a roof, in
a place protected from the wind or over a vent, doors or windows where
the temperature is not the normal outdoor temperature.
Device Terminal Block No. Conductor Type
Outdoor sensor NTC X 1/10 and X 1/2 2 X 0,7 mm
2
4.3.2. Storage tank and heat distribution sensors
In Esi/Emi model with separate storage tank are the temperature sensors
installed in the same water space on the top section of the storage tank. In
such case same temperature settings are used for the top and lower sec-
tions of the storage tank. The connections diagrams for cases where the
ground source heat pump is connected to a Lämpöässä storage tank are
found at Lämpöässä website. Heat distribution circuit sensors must be
installed to the distance of approx. 0.5 m from the three-way or four-way
valve to the flowing line of the heat distribution circuit.
4.3.3. Room sensor (optional)
In order for the room sensor to detect average indoor temperatures as
reliably as possible, it must be placed in a central and open location, for
example a hallway between several rooms or the staircase. String a bipo-
lar electrical line (at least 0.5 mm
2
) from the heat pump to the room
sensor. Position the room sensor approximately 2/3 of the way up the
wall. Connect the room sensor lead to the heat pump.
Device Terminal Block No. Conductor type
Room sensor NTC X 1/4 and X 1/2 2 X 0,7 mm
2
4.3.4. Current monitor
If the equipment has been installed in the part-power configuration, load
limiting relays must be installed to the building’s master electrical switch-
board, if necessary. These relays are intended to reduce the power of the
ground source heat pump’s electric heating element by phases if the phase
current passing through the building’s master fuses approaches the master
fuse nominal current.
Current monitoring relay installations and connection
Load limiting relays are connected downstream of the master electrical
switchboard’s master fuse so that the entire building’s main current
passes through the relays. Contact data of load limiting relays are wired
by quadrupole cable from the master switchboard to the ground source
heat pump electrical switchboard, where they are connected to the con-
trol circuit diagram.
These settings are initial and may require changing. Relays must always
be adjusted in a case-specific manner.
• Choose correct current
range
• Turn switch 2 to position
ON (if master fuse size is
less than 50 A)
• Other switches 1, 3-6 to
position OFF.
• Adjust hysteresis, cur-
rent % and delay using
screws in the front part
(master fuses 25 A)
• Hysteresis 21
• Current 25 - 28 %
• Delay 1s
• The relay requires external
voltage 24-240 V/AC.
• External supply is con-
nected 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.