INSTALLATION
| Specification
982001-TERRA-M2-M4-EN04.1 | www.ochsner.com 73
Key to system principle schematic for TERRA 18, TERRA 22 and TERRA 27 (M4-3)
A Main distributor for 3-phase alternating current
B Main distributor for single phase alternating current
C Indoor unit control box
D Indoor unit
E DHW tank
F Heat pump separating cylinders
G Remote controller
1 Electric booster heater
2 Control circuit (OTE controller)
3 Main power circuit (compressor and fan)
4 PSU signal contact
5 Outdoor temperature sensor (TA)
6 Top buffer sensor (TPO)
7 Bottom buffer sensor (TPM)
8 DHW sensor (TB)
9 Heating circuit circulation pump 1, direct (HCP 1)
10 Mixer sensor (TMK)
11 Heating circuit circulation pump 2, mixed (HCP 2)
Power supply via high limit safety cut-out
12 Heating circuit mixing valve (MVH)
13 Control elements (eBus)
Summary of Contents for TERRA 11
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