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AFP • Antifreeze valves

  • Hydraulic accessories
  • Antifreeze valves

The mechanical antifreeze valve (iStop® 108701) is used to keep the water in the heating and cooling circuit running and to prevent ice formation. When the temperature of the medium reaches 3°C, the internal sensor opens and allows water to drain out of the system. This valve is designed for systems with monobloc heat pumps and prevents damage to the machine and the circuit components if the power supply is cut off and the temperature of the medium drops below 3°C.

Brand

Caleffi

Composition

  • Sold by piece

Installation

The device must only be installed in a vertical position, with the outlet facing downwards, to allow the drained water to flow out properly and free from obstructions. The antifreeze valves must be installed outdoors, where the lowest temperatures are reached if the heat pump is blocked. The antifreeze valves must be positioned far away from heat sources in order to maintain proper operation. It is recommended to install the antifreeze valves on both pipes (flow and return). Otherwise, the pipe may remain filled with water, leading to the risk of ice formation.

The complete installation and commissioning instructions can be found in the manual under “Downloads”.

Specifications

  • Connection: G 1 1/4" A (ISO 228-1) M
  • Maximum operation pressure: 10 bar
  • Liquid temperature range: 0–65°C
  • Ambient temperature range: -30–60°C
  • Opening temperature: 3°C
  • Closing temperature: 4°C
  • Material: brass

Accessories

Loose nut coupling, type: LCJ

Applicable outdoor units

  • Monoblock, type: CGW-M
  • Monoblock, type: CGW-M SG

Artikelen

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Dia [mm]
Kleur
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Q Uitblaas (3,5 m/s in het kanaal) [m³/h]
Artikelnummer Type Dia [mm] Kleur Q Aanzuig (2,5 m/s in het kanaal) [m³/h] Q Uitblaas (3,5 m/s in het kanaal) [m³/h] E-shop
A090101125000 CT125R 125 Rood 105 147
A090101150000 CT150R 150 Rood 153 214
A090101160000 CT160R 160 Rood 153 214
A090101200000 CT200R 200 Rood 275 384
A090101250000 CT250R 250 Rood 431 604
A090101315000 CT315R 315 Rood 689 964
A090101355000 CT355R 355 Rood 876 1226
A090101400000 CT400R 400 Rood 1114 1560
A090101450000 CT450R 450 Rood 1412 1977
A090101500000 CT500R 500 Rood 1746 2444
A090101630000 CT630R 630 Rood 2779 3891
A090102125000 CT125B 125 Grijs 105 147
A090102150000 CT150B 150 Grijs 153 214
A090102160000 CT160B 160 Grijs 153 214
A090102200000 CT200B 200 Grijs 275 384
A090102250000 CT250B 250 Grijs 431 604
A090102315000 CT315B 315 Grijs 689 964
A090102355000 CT355B 355 Grijs 876 1226
A090102400000 CT400B 400 Grijs 1114 1560
A090102450000 CT450B 450 Grijs 1412 1977
A090102500000 CT500B 500 Grijs 1746 2444
A090102630000 CT630B 630 Grijs 2779 3891
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The antifreeze valve allows drainage of the medium in the circuit when the circuit temperature reaches a value of 3°C.

Configuration

A: 1 1/4"
B: 59mm
C: 83mm
D: 36mm
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