Reduce installation time by up to 60% with Optyma™ Control
The Optyma™ Control AK-RC 251 is designed for safety, protection and ease of installation in walk-in coolers and freezers for both upgrades to existing walk-ins and new installations.
This electronic temperature controller eliminates the need for mechanical thermostats in cooling applications and defrost timers in freezer applications. It controls compressors, solenoid valves, defrost—including a second evaporator defrost—fans, lights and crankcase heaters.
Features and benefits
Can improve room efficiency by up to 30%
Quick set-up with easy mounting and wiring
Includes a weatherproof enclosure
Kitted with two NTC sensors (5 ft., 10 ft.)
Compatible with commonly available standard 3⁄4 in. fittings to maintain weatherproof rating
Low-GWP walk-ins
When building or upgrading a walk-in cooler or freezer, Danfoss ensures yours reaches high efficiency with low GWP and minimal carbon footprint.
Documents
| Type | Name | Language | Valid for | Updated | Download | File type |
|---|---|---|---|---|---|---|
| Operating guide | AK-RC 251 (Optyma Control) wiring diagram | English | Multiple | 18 Mar, 2021 | 3.4 MB | |
| Brochure | Optyma Control cut sheet | English | Multiple | 10 Feb, 2021 | 1.3 MB | |
| Installation guide | Optyma™ control AK-RC Single Phase mounting kit | English | Multiple | 21 Apr, 2022 | 507.2 KB | |
| User guide | Temperature controller for walk-in coolers and freezers, type AK-RC 251 | English | Multiple | 03 Feb, 2021 | 4.1 MB | |
| User guide | Temperature controller for walk-in coolers and freezers, type AK-RC 251 | Spanish, Castilian | Multiple | 03 Feb, 2021 | 4.2 MB | |
| Installation guide | Temperature controller for walk-in coolers and freezers, Type AK-RC 251 | English; Spanish, Castilian | Multiple | 22 Feb, 2021 | 2.8 MB |
Videos
Introducing the Optyma™ Control, AK-RC 251 electronic temperature controller
Basic circuitry and wiring of the Optyma™ Control, AK-RC 251 electronic temperature controller
Basic Programming of the Optyma™ Control, AK-RC 251 electronic temperature controller
Navigating extended wizard parameter menu in the Optyma™ AK-RC 251 electronic temperature controller
Software
The truth is Cool(selector®2)
Coolselector®2 features unbiased calculations for the selection of refrigeration and air conditioning components based on the user’s requirements or based on standard operating conditions.
Use Coolselector®2 for the technical data you need to get the job done right.
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