Ochsner TERRA 6, Operating And Installation Manual

Page: 17 / 92

INSTALLATION | Preparing to install the appliance
982001-TERRA-M2-M4-EN04.1 | www.ochsner.com 17
Description Type Max.
starting
current
[A]
Max. op-
erating
current
[A]
Fuse
protec-
tion
Main power cir-
cuit
(compressor
and fan)
TERRA 6 HPLA 14,0 4,8 C16A
TERRA 8 HPLA 21,5 6,2 C16A
TERRA 11 HPLA 26,0 7,4 C16A
TERRA 14 HPLA 30,0 9,7 C16A
TERRA 18 HPLA 37,5 13,0 C16A
TERRA 22 HPLA 62,5 18,0 C25A
TERRA 27 HPLA 62,5 21,0 C25A
Electric booster
heater (optional)
TERRA 6 HPLA
-
TERRA 27 HPLA
– 14 B16A
Control circuit
(control unit)
TERRA 6 HPLA
-
TERRA 27 HPLA
– 6 C13A
Material damage
Operating a three-phase motor (compressor,
pumps, fans) for long periods using an incorrectly
phased three-phase supply will damage the motor.
»
Ensure that all three-phase motors are
connected to a three-phase supply with a
clockwise rotating field.
9.3.2 Heat pumps for single phase alternating current
11_02_200_202_01_024
C13A B16A
1 x 230 VAC 1 x 230 VAC 3 x 230 VAC
1
2
3 4 5 6
1 Heat pump indoor unit control box
2 Main system distributor board
3 Supply to main power circuit (compressor)
4 PSU signal contact
5 Supply to control circuit (OTE controller)
6 Supply to electric booster heater
Description Type Max.
starting
current
[A]
Max. op-
erating
current
[A]
Fuse
protec-
tion
Main power cir-
cuit
(compressor
and fan)
TERRA 6
HPLB
30,0 12,8 C16A
TERRA 8 HPLB 41,5 17,1 C25A
TERRA 11 HPLB 54 22,8 C25A
TERRA 14 HPLB 65 27,9 C32A
Electric booster
heater (optional)
TERRA 6 HPLB
-
TERRA 14 HPLB
– 12,8 B16A
Control circuit
(control unit)
TERRA 6 HPLB
-
TERRA 14 HPLB
– 6 C13A
9.3.3 Cables from main distributor to indoor unit
Description Wires Min. cable
cross-sec-
tion
Supply to electric booster
heater (optional)
(8.8 kW electric immersion
heater)
3x 400 VAC
(L1/L2/L3/N/PE)
or
3x 230 VAC
(L/L/L/N/PE)
2.5 mm²
Control circuit supply 1x 230 VAC
(L/N/PE)
1.5 mm²
Supply to pumps and ser-
vomotors
1x 230 VAC
(L/N/PE)
1.0 mm²
Sensor leads
(system temperature sensors)
2x
(shielding recommend-
ed)
1.0 mm²
Bus leads
(eBus connections from OTE
controller to remote control-
lers or auxiliary modules and
in cascades)
Example:
Y(ST)Y 2x2x0.8
(shielded cable design
and twisted cable
pairs)
0.8 mm²
9.3.4 Temperature sensor
i Information
The maximum line length for sensor leads is 50 m.
i Information
Sensor leads must be routed separately from 230 V
and 400 V cables. If a minimum distance of 20 cm
cannot be maintained, then shielded cables should
be used. The shielding should be connected to the
earth rail of the heat pump.
Outdoor temperature sensor (TA):
»
Fit the outdoor temperature sensor at a height of ap-
prox. 2.5 m to the outside wall of the building (on the
north-west side). Make sure that the outdoor temper-
ature sensor is not exposed to direct sunlight or wind,
as this will impair the control characteristics.
Buffer sensor (TPO, TPM):
In the heat pump buffer tank, two buffer sensors are re-
quired. The heat pump is switched on on the basis of
readings from the TPO and switched off on the basis of
those from the TPM.
»
Install a sensor pocket in the female socket provided
for the upper buffer sensor (TPO)
»
Install a sensor pocket in the female socket provided
for the lower buffer sensor (TPM)