OH CT 18s

New
Groundwater

Unique – uses propane with no need for an on-site safety plan (up to 18 kW)

  • Natural refrigerant R-290 (propane)

  • Secure, no on-site safety concept required

  • Argument 3

  • Simple and flexible installation

  • Swiss development and production

  • Scarcely audible

  • High flexibility of hydraulic connections

Item number
134008
Heating capacity range
3.5 - 18 kW
inverter_30x30mm_padding-9mm_pim.pdf

OH CT 18sGroundwater

Product information

Description

This compact water/water heat pump with inverter technology is developed and produced in Münsingen – for maximum efficiency and low operating costs. It is ideal for single-family homes and apartment buildings with radiators and underfloor heating, reliably covering heating and hot water requirements. The heat pump is designed to keep installation costs very low: it scores with its proven and optimised all-in-one concept, in which components required for installation, such as circulation pumps, DHW changeover valve and emergency heating element, are already built in. It also features flexible pipe routing that can be adapted to the room. Thanks to the low refrigerant charge, there is no need for a site-specific safety concept for propane. In addition to heating and hot water preparation, free cooling is also possible. Several units can be combined if required. The heat pump is barely audible during operation and can be conveniently operated via the integrated display or app. The heat pump can be easily integrated into an energy management system, thus contributing to an increase in the self-consumption of photovoltaic systems. We recommend a LAN connection via the router provided by the building owner.

Technical info

  • Natural refrigerant R-290 (propane)
  • Power-regulated compressor
  • Cascadable
  • Touch display for easy commissioning and operation
  • Prepared for network connection
  • Ready for electrical and hydraulic connection

Integrated components

  • Two highly efficient circulating pumps
  • Emergency heating element
  • DHW switching valve
  • Brine expansion tank (with OH CT 18s on site)
  • Heat quantity recorder
  • Flow sensors

Technical specifications

Source W10 / Heating W355.8
Source W10 / Heating W357.1
Source W10 / Heating W555
Heating W35A+++
Heating W55A+++
Source W10 / Heating W353.5 - 18 kW
Source W10 / Heating W553 - 18 kW
Source W10 / Heating W755.1 - 13.3 kW
Dimensions (D × W × H)707x596x1250 mm
Flow temperature25 - 75 °C
Weight165 kg
Heat source temperature6 - 25 °C

Accessories

30 out of 30 releations

ibn mont inbetriebnahme montage.ai
Start-up of Optiheat, Optipro, OptialtumZusätzliche Instruktion und Übergabe OH – kleine Ausführung
Art. Nr. IBN21
trn transportkosten.ai
TransportationZusatzpalette für Zubehör
Art. Nr. TRN11
118763 überströmventil differenzdruck.tif
Differential pressure overflow valveÜberströmventil Differenzdruck ¾"
Art. Nr. 118763
118492 115976 128342 128343 kabelfühler qaz 36.522.tif
Temperature sensor for Optiheat heat pumpsKabelfühler QAZ 36.522
Art. Nr. 118492
118493 anlegefühler qad 36.tif
Temperature sensor for Optiheat heat pumpsAnlegefühler QAD 36
Art. Nr. 118493
118763 überströmventil differenzdruck.tif
Differential pressure overflow valveÜberströmventil Differenzdruck ¾"
Art. Nr. 118763
ibn mont inbetriebnahme montage.ai
Start-up of additional componentsIBN – Erweiterungsmodul
Art. Nr. IBN31
ibn mont inbetriebnahme montage.ai
Start-up of additional componentsIBN – Free Cooling, gleichzeitig mit Wärmepumpe
Art. Nr. IBN34
ibn mont inbetriebnahme montage.ai
Start-up of additional componentsIBN – Free Cooling, separater Arbeitsgang
Art. Nr. IBN35
els01 elektroschema.tif
Optiheat and Aeroheat electrical circuit diagramElektroschema für Optiheat All-In-One, Economy
Art. Nr. ELS01
130849_tpm01.jpg
Dew point monitorsTaupunktwächter TPM02/230-A
Art. Nr. 130849
for mounting on cold water pipes Switching relay: change-over contact, power supply 230 V
118685 -- 122370 expansionsgefäss sd.tif
Expansion vesselsExpansionsgefässe
Product Family
Pauschalwartungsverträge WärmePauschalwartungsvertrag Wärme Kategorie 3
Art. Nr. 000257
ctaplus sprachneutral vektorisiert cmyk.ai
CTAplusCTAplus Kategorie 3
Art. Nr. 000244
More information at cta.ch/ctaplus
Connection set Optiheat TerraAnschluss-Set Wärmepumpe 1 1/4''
Art. Nr. 134370
For OH CT 18s
New
Connection set Optiheat TerraAnschluss-Set Trinkwarmwasser 1 1/4''
Art. Nr. 134371
For OH CT 18s
New
Connection set Optiheat TerraAnbau-Set Wärmepumpen Rückseite 1''
Art. Nr. 134208
Required when installing the free cooling set or system separation set on the rear of the heat pump.
New
121111 -- 121099 free cooling set.tif
Free cooling set - Complete for extension 5 and 6Free Cooling-Set 4 - E5
Art. Nr. 130987
For OH 1-18es, 1-22e to 1-25e, OH I 17e, OH CT 18s
121111 -- 121099 free cooling set.tif
Free cooling set - Complete for extension 5 and 6Free Cooling-Set 4 - E6
Art. Nr. 130990
For OH 1-18es, 1-22e to 1-25e, OH I 17e, OH CT 18s
CTA Grobkostenrechner 2000x2000 D

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Ihre Hauswärmepumpen-Experten

Showing contacts near Bern.

Dominic Plüss

Technical sales consultant for heatpumps Biel, Seeland in Bern

dominic.pluess@cta.ch

+41 79 447 15 29

Nicolas Jeanneret

Technical sales consultant for heatpumps Soleure et Langenthal

nicolas.jeanneret@cta.ch

+41 79 859 74 94

Urs Häusermann

Technical sales consultant for heatpumps Aargau West

urs.haeusermann@cta.ch

+41 79 396 24 22