ERC 214 Digital Regulator for Refrigeration and Defrosting, 4 Relays
Installation Guide
Product Overview
The ERC 214 is a smart, multipurpose integrated refrigeration controller designed for temperature and defrost management, featuring 4 relays. It is suitable for operating temperature sensing control in refrigeration and heating applications, meeting the requirements of commercial refrigeration. The unit is designed for easy installation and optimal usability.
Dimensions and Installation
Dimensions (mm)
The controller has a width of 83 mm, a height of 36 mm, and a depth of 61.2 mm (66 mm including connectors). The drilling template specifies dimensions of 71 mm and 29 mm.
Assembly
The unit is designed for rear mounting using clip fixing. The diagram shows the assembly and removal process.
Wiring Diagram
The wiring diagram illustrates connections for sensors (Sair, S5, Sc/DI1, DI2), relays (DO1, DO2, DO3, DO4), and electrical input (3L, 4N, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14). It also indicates connectors with a maximum torque of 0.4 Nm.
A quick programming tool, EKA 183B, is also shown.
Technical Features
- Ease of Use: Features four buttons, an easy-to-read menu structure, and preinstalled application solutions for optimal usability.
- Simple Installation: Equipped with a 16 A relay allowing direct connection of heavy loads, eliminating the need for an intermediate relay. Suitable for compressors up to 2 HP, considering power factor and motor efficiency (over 0.65 at 230 V and over 0.85 at 115 V). Compatible sensor types and screw terminals ensure flexible installation.
- Unit Protection: Incorporates special software functions to protect the compressor from voltage fluctuations or high condensation temperatures, ensuring optimal unit performance.
- Energy Efficiency: Features defrosting on request, day/night mode, and intelligent evaporator fan management for maximum energy efficiency.
User Interface
Button Functions
- Startup: Press and hold buttons on startup to reset factory settings (display shows "FAC").
- Navigation: Press for one second for BACK (◀), press and hold for PULL-DOWN.
- Selection/Menu: Press for one second for TEMPERATURE SETPOINT/OK (SET), press and hold for MENU.
- Adjustment: Press for one second for UP (▲), press and hold for ON/OFF.
- Adjustment: Press for one second for DOWN (▼), press and hold for DEFROSTING.
Display Icons
- ? Night mode (energy saving)
- ? Fan on
- ❄️ Compressor on
- ? Alarm activated
- Blinks in pull-down mode
- ♨️ Defrosting
- ?️ Units (°C or °F)
Quick-Start Configuration
- STEP 1: Startup
- STEP 2: Select quick-start configuration menu
Within 30 seconds of startup, press the BACK (◀) button for 3 seconds. The main switch (r12) will be automatically set to OFF.
- STEP 3: Select the preinstalled application "o61"
The display will show the application selection parameter "o61". Press SET to select. The default value (e.g., "AP0") will blink. Use UP/DOWN (▲/▼) to select the desired application and press SET to confirm. The regulator presets parameters based on the selection and hides irrelevant ones. You can cycle through applications AP0 to AP6 using the UP button.
App Description App 0 None (no preset application) App 1 Medium temperature ventilated ref. units (2 – 6°C), with timed natural defrosting App 2 Medium temperature ventilated ref. units (0 – 4°C), with timed electric defrosting App 3 Low temperature ventilated ref. units (-26 – -20°C), with timed electric defrosting App 4 Medium temperature ventilated ref. units (0 – 4°C), with timed electric defrosting (based on temperature) App 5 Low temperature ventilated ref. units (-26 – -20°C), with timed electric defrosting (based on temperature) App 6 None (no preset application) with simplified parameters list - STEP 4: Select the sensor type "o06"
The display will show the sensor selection parameter "o06". Press SET to select. The default value (e.g., "n10") will blink. Use UP/DOWN (▲/▼) to select the sensor type (n5=NTC 5 K, n10=NTC 10 K, Ptc=PTC, Pt1=Pt1000) and press SET to confirm. Ensure all sensors are of the same type.
- STEP 5: Configure output DO4 "o36"
The display will show parameter "o36" for output DO4 configuration. Select "Lig" (light) or "ALA" (alarm) using UP/DOWN (▲/▼) and press SET to confirm. The display will reset to normal mode.
Menu Structure
The menu structure allows access to parameter groups, parameter names, and values. Pressing SET for 3 seconds accesses state, settings, and service modes. Parameters are organized into groups (e.g., Input states, Configuration, Reference/thermostat, Alarm, Defrost, Fan control, Compressor, Others) and parameter names (e.g., Main switch, Application, Sensor type, DO4 configuration).
Quick configuration with "cFg" menu:
- Press SET for three seconds to open parameter groups.
- Select the "cFg" menu and press SET. The "r12" (main switch) is displayed first.
- Set the main switch to OFF (r12=0) to change the preinstalled application.
- Use UP/DOWN (▲/▼) to scroll through the parameters list.
- Configure parameter "o61" to select a preinstalled application by pressing SET, then UP/DOWN to choose (AP0=no application), and SET to confirm.
- Continue configuring subsequent parameters like sensor type ("o06") and DO4 configuration ("o36") within the "cFg" menu.
Basic Functions
- Adjusting the setpoint temperature: Press SET (short press) to adjust. Use UP/DOWN (▲/▼) to change the setpoint (it flashes in setting mode). Press SET to save.
- Initiate a manual defrost: Press and hold DEFROST for 3 seconds to start or stop defrost. The DEFROST icon is shown during the process.
- Initiate a pull down: Press and hold PULL DOWN for 3 seconds to initiate. "Pud" is shown for 3 seconds, and the PULL DOWN icon flashes. Press and hold PULL DOWN again to stop.
- View an active alarm: Temperature and alarm codes alternate on the display. The alarm bell icon is shown.
- Unlock keyboard: If locked (P76=YES) after 5 minutes of inactivity, "LoC" appears. Press UP and DOWN buttons simultaneously for 3 seconds to unlock ("unl" is displayed).
Default Application Settings
| App | Mode | Description | Temp. | Def. type | Def. end |
|---|---|---|---|---|---|
| App 0 | Cooling | None (no preset application) | |||
| App 1 | Cooling | Medium temperature ventilated refrigeration units with timed natural defrost | (2 – 6°C) | Natural | Time |
| App 2 | Cooling | Medium temperature ventilated refrigeration units with timed electric defrost | (0 – 4°C) | Electrical | Time |
| App 3 | Cooling | Low temperature ventilated refrigeration units with timed electric defrost | (-26 – -20°C) | Electrical | Time |
| App 4 | Cooling | Medium temperature ventilated refrigeration units with electrical defrost (by temperature) | (0 – 4°C) | Electrical | Temperature |
| App 5 | Cooling | Low temperature ventilated refrigeration units with electrical defrost (by temperature) | (-26 – -20°C) | Electrical | Temperature |
| App 6 | Cooling | None (no preset application) with simplified parameter list |
Wiring diagrams for APP 1, APP 2/3, and APP 4/5 are provided, showing sensor and output connections for 230 V AC systems.
Technical Data
| FEATURES | DESCRIPTION |
|---|---|
| Purpose of control | Operating temperature sensing control suitable for incorporation into commercial air-conditioning and refrigeration applications |
| Construction of control | Incorporated control |
| Power supply | Low voltage, regulated, galvanically isolated, 115 V AC or 230 V AC, 50/60 Hz input |
| Rated power | Less than 0.7 W |
| Inputs | Sensor inputs, Digital inputs, Programming key. Connected to SELV limited energy <15 W. |
| Types of sensors allowed | NTC 5000 Ohms at 25 °C (beta = 3,980 at 25/100 °C - EKS 211), NTC 10000 Ohms at 25 °C (beta = 3,435 at 25/85 °C - EKS 221), PTC 990 Ohms at 25 °C (EKS 111), Pt1000 (AKS 11, AKS 12, AKS 21). |
| Sensors in "Kit Solution" | NTC 10000 Ohms at 25 °C, 1.5 m cable |
| Precision | Measuring range: -40–105 °C (-40–221 °F). Regulator precision: +/-1 K below -35 °C, +/-0.5 K between -35–25 °C, +/-1 K above 25 °C. |
| Type of action | 1B (relay) |
| Output | Compressor relay DO1: 16 A, 16 (16) A, EN 60730-1; 10 FLA/60 LRA at 230 V, UL60730-1; 16 FLA / 72 LRA at 115 V, UL60730-1. Defrosting relay DO2: 8 A, 2 FLA/12 LRA, UL60730-1; 8 A, 2 (2 A), EN60730-1. Fan relay DO3: 3 A, 2 FLA/12 LRA, UL60730-1; 3 A, 2 (2 A), EN60730-1. Alarm / light relay DO4: 2:00 AM. |
| Display | LED 3-figure display, decimal point and multifunction icons, °C + °F scale. |
| Operating Conditions | -10–55 °C (14–131 °F), 90% Rh. |
| Storage conditions | -40–70 °C (-40–158 °F), 90% Rh. |
| Protection | Front: IP65 (with seal). Rear: IP00. |
| Environmental data | Pollution degree II, condensate free. |
| Overvoltage category | II - 230 V supply version - (ENEC, UL recognized); III - 115 V supply version - (UL recognized). |
| Heat and fire resistant | Category D (UL94-V0). Temperature for ball pressure test statement "According to Annex G" (EN 60730-1). |
| EMC category | Category I. UL acknowledgement (USA and Canada) (UL 60730-1), ENEC (EN 60730-1), CQC, EC (LVD and EMC Directives), EAC (GHOST), NSF, ROHS2.0. HACCP temperature monitoring in compliance with EN134785 Class I if used with sensor AKS 12. |
| Certifications | (Included in EMC category description) |
Parameters
The following tables detail the parameters for the ERC 214, including their codes, units, and default/application-specific settings.
Configuration Parameters
| Parameter name - ERC 214 | Code | Min. | Max. | Unit | App. 0 (Def.) | App. 1 | App. 2 | App. 3 | App. 4 | App. 5 | App. 6 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Main switch | r12 | -1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |
| Predefined applications | o61 | AP0 | AP6 | AP0 | AP1 | AP2 | AP3 | AP4 | AP5 | AP6 | |
| Sensor type selection | o06 | n5=NTC 5 K, n10=NTC 10 K, Ptc=PTC, Pt1=Pt1000 | n5 | n10 | n10 | n10 | n10 | n10 | n10 | n10 | |
| DO4 configuration Lig=light, ALA=alarm | o36 | Lig | ALA | Lig | ALA | Lig | Lig | Lig | Lig | Lig |
Reference / thermostat Parameters
| Parameter name - ERC 214 | Code | Min. | Max. | Unit | App. 0 (Def.) | App. 1 | App. 2 | App. 3 | App. 4 | App. 5 | App. 6 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Temperature setpoint | r00 | -100 | 200 | C/F | 2 | 4 | 2 | -24 | 2 | -24 | 2 |
| Differential | r01 | 0.1 | 20 | K | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
| Min set point limitation | r02 | -100 | 200 | C/F | -35 | 2 | 0 | -26 | 0 | -26 | -35 |
| Max set point limitation | r03 | -100 | 200 | C/F | 50 | 6 | 4 | -20 | 4 | -20 | 50 |
| Offset display (temperature correction shown on display) | r04 | -10 | 10 | K | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Display units (°C / °F) | r05 | -C | -F | -C | -C | -C | -C | -C | -C | -C | |
| Sair calibration (offset for air temperature calibration) | r09 | -20 | 20 | K | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Main switch | r12 | -1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |
| Night setback (offset temperature during night mode) | r13 | -50 | 50 | K | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Thermostat reference displacement (temperature offset) | r40 | -50 | 50 | K | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Pull-down duration | r96 | 0 | 960 | min. | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Pull-down temperature limit | r97 | -100 | 200 | C/F | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Alarm Parameters
| Parameter name - ERC 214 | Code | Min. | Max. | Unit | App. 0 (Def.) | App. 1 | App. 2 | App. 3 | App. 4 | App. 5 | App. 6 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Delay for temperature alarm during normal conditions | A03 | 0 | 240 | min | 30 | 45 | 30 | 30 | 30 | 30 | 30 |
| Temperature alarm delay pull-down / startup / defrosting duration | A12 | 0 | 240 | min | 60 | 90 | 60 | 60 | 60 | 60 | 60 |
| High temperature alarm limit (Cabinet / Ambient) | A13 | -100 | 200 | C/F | 8 | 10 | 8 | -15 | 8 | -15 | 8 |
| Low temperature alarm limit | A14 | -100 | 200 | C/F | -30 | 0 | -2 | -30 | -2 | -30 | -30 |
| DI1 delay (delay for selected function DI1) | A27 | 0 | 240 | min | 30 | 30 | 30 | 30 | 30 | 30 | 30 |
| DI2 delay (delay for selected function DI2) | A28 | 0 | 240 | min | 30 | 30 | 30 | 30 | 30 | 30 | 30 |
| Condenser high alarm limit | A37 | 0 | 200 | C/F | 80 | 80 | 80 | 80 | 80 | 80 | |
| Condenser high block limit | A54 | 0 | 200 | C/F | 85 | 85 | 85 | 85 | 85 | 85 | |
| Voltage protection enable | A72 | no | yes | no | yes | no | no | no | no | no | |
| Minimum cut-in voltage | A73 | 0 | 270 | V | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Minimum cut-out voltage | A74 | 0 | 270 | V | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Maximum voltage | A75 | 0 | 270 | V | 270 | 270 | 270 | 270 | 270 | 270 | 270 |
Defrost Parameters
| Parameter name - ERC 214 | Code | Min. | Max. | Unit | App. 0 (Def.) | App. 1 | App. 2 | App. 3 | App. 4 | App. 5 | App. 6 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Defrosting method (no=no defrost, nAt=natural, EL=electric, gAS=hot gas) | d01 | no | gAS | EL | nAt | EL | EL | EL | EL | EL | |
| Defrost stop temperature | d02 | 0 | 50 | C/F | 6 | 6 | 6 | 6 | 6 | 6 | 6 |
| Defrost interval | d03 | 0 | 240 | hours | 8 | 6 | 8 | 12 | 8 | 12 | 8 |
| Max. defrost time | d04 | 0 | 480 | min | 30 | 45 | 15 | 15 | 30 | 30 | 30 |
| Defrost delay at power up (or DI signal) | d05 | 0 | 240.0 | min | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Drip delay | d06 | 0 | 60 | min | 0 | 0 | 0 | 0 | 0 | 0 | 5 |
| Fan delay after defrost | d07 | 0 | 60 | min | 0 | 0 | 0 | 0 | 0 | 0 | 5 |
| Fan start temperature after defrost | d08 | -50 | 0 | C/F | -5 | -5 | -5 | -5 | -5 | -5 | - |
| Fan during defrost | d09 | OFF | on | on | on | on | on | on | on | on | |
| Defrost stop sensor (non=timed, Air=Sair (air temperature), dEF=S5 (defrost sensor)) | d10 | non | dEF | non | non | non | non | non | dEF | dEF | |
| Compressor accumulated runtime to start defrost (0=OFF) | d18 | 0 | 96 | hours | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Defrost on demand (20.0=OFF) | d19 | 0 | 20 | K | 20 | 20 | 20 | 20 | 20 | 20 | 20 |
| Defrost delay after pull-down (0=OFF) | d30 | 0 | 960 | min | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Fan control Parameters
| Parameter name - ERC 214 | Code | Min. | Max. | Unit | App. 0 (Def.) | App. 1 | App. 2 | App. 3 | App. 4 | App. 5 | App. 6 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Fan at compressor cutout (FFc=fan follow compressor, FAo=fan always ON, FPL= fan pulsation) | F01 | FFc | FPL | FAo | FAo | FAo | FAo | FAo | FAo | FAo | |
| Fan stop evaporator temperature (50.0=OFF) | F04 | -50 | 50 | C/F | 50 | 50 | 50 | 50 | 50 | 50 | 50 |
| Fan cycle ON | F07 | 0 | 15 | min | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
| Fan cycle OFF | F08 | 0 | 15 | min | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
Compressor Parameters
| Parameter name - ERC 214 | Code | Min. | Max. | Unit | App. 0 (Def.) | App. 1 | App. 2 | App. 3 | App. 4 | App. 5 | App. 6 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Compressor minimum ON time | C01 | 0 | 30 | min | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Compressor minimum OFF time | C02 | 0 | 30 | min | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
| Compressor OFF delay with door open | C04 | 0 | 15 | min | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
| Zero crossing selection | C70 | no | yes | yes | yes | yes | yes | yes | yes | yes |
Others Parameters
| Parameter name - ERC 214 | Code | Min. | Max. | Unit | App. 0 (Def.) | App. 1 | App. 2 | App. 3 | App. 4 | App. 5 | App. 6 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Delay of outputs at startup | o01 | 0 | 600 | min | 5 | 5 | 5 | 5 | 5 | 5 | 5 |
| DI1 configuration (OFF=not used, Sdc=status display output, doo=door alarm with resumption, doA=door alarm without resumption, SCH = main switch, nig=day/night mode, rFd=reference displacement, EAL=external alarm, dEF=defrost, Pud=pull-down, Sc=condenser sensor) | o02 | OFF | Sc | OFF | Sc | OFF | OFF | OFF | OFF | OFF | |
| Serial address | o03 | 0 | 247 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| Password | o05 | no | 999 | no | no | no | no | no | no | no | |
| Select sensor type (n5=NTC 5 K, n10=NTC 10 K, Ptc=PTC, Pt1=Pt1000) | o06 | n5 | Pt1 | n10 | n10 | n10 | n10 | n10 | n10 | n10 | |
| Display resolution (0.1=steps of 0.1 °C, 0.5=steps of 0.5 °C, 1.0=steps of 1.0 °C) | o15 | 0.1 | 1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | |
| Relay 1 counter (1 count = 100 operating cycles) | o23 | 0 | 999 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| Relay 2 counter (1 count = 100 operating cycles) | o24 | 0 | 999 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| Relay 3 counter (1 count = 100 operating cycles) | o25 | 0 | 999 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| Relay 4 counter (1 count = 100 operating cycles) | o26 | 0 | 999 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| DO4 configuration (ALA=alarm, Lig=light) | o36 | ALA | Lig | Lig | Lig | Lig | Lig | Lig | Lig | Lig | |
| DI2 configuration (OFF=not used, Sdc=status display output, doo=door alarm with resumption, doA=door alarm without resumption, SCH=main switch, nig=day/night mode, rFd=reference displacement, EAL=external alarm, dEF=defrost, Pud=pull-down) | o37 | OFF | Pud | OFF | Pud | OFF | OFF | OFF | OFF | OFF | |
| Lights control (on=always on, dAn=day/night, doo=on basis of door action) | o38 | on | doo | on | on | on | on | on | on | on | |
| Predefined applications | o61 | AP0 | AP6 | AP0 | AP1 | AP2 | AP3 | AP4 | AP5 | AP6 | |
| Save settings as default (WARNING: previous default settings will be overwritten) | o67 | no | yes | no | yes | no | no | no | no | no | |
| Display at defrost (Air=effective air temperature, FrE=freezing temperature, -d-="-d-" is displayed) | o91 | Air | -d- | -d- | -d- | -d- | -d- | -d- | -d- | -d- |
Polarity Parameters
| Parameter name - ERC 214 | Code | Min. | Max. | Unit | App. 0 (Def.) | App. 1 | App. 2 | App. 3 | App. 4 | App. 5 | App. 6 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| DI1 input polarity (nc=normally closed, no=normally open) | P73 | nc | no | no | no | no | no | no | no | no | |
| DI2 input polarity (nc=normally closed, no=normally open) | P74 | nc | no | no | no | no | no | no | no | no | |
| Invert alarm relay (0=normal, 1=relay action inversion) | P75 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| Keyboard lock enable | P76 | no | yes | no | yes | no | no | no | no | no |
Readouts Parameters
| Parameter name - ERC 214 | Code | Min. | Max. | Unit | App. 0 (Def.) | App. 1 | App. 2 | App. 3 | App. 4 | App. 5 | App. 6 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Controller status (S0=cooling ON/Heating ON, S2=wait for compressor ON time to elapse, S3=wait for compressor OFF time to elapse-restart time, S4=drip OFF delay after defrost, S10=cooling stop, S11=cooling stopped by thermostat/heating OFF, S14=defrosting state, S15=fan delay state after defrost, S17=door open (DI input), S20=emergency cooling, S25=manual control of outputs, S30=continous cycle/Pull-down, S32=delay of outputs at power up) | u00 | S0 | S32 | S0 | S32 | S0 | S0 | S0 | S0 | S0 | |
| Air temperature (Sair) | U01 | -100 | 200 | C/F | |||||||
| Read the present regulation reference | u02 | -100 | 200 | C/F | |||||||
| Defrost temperature (S5) | u09 | -100 | 200 | C/F | |||||||
| DI1 input | u10 | OFF | on | ||||||||
| Status of night operation | u13 | OFF | on | ||||||||
| DI2 input | u37 | OFF | on | ||||||||
| Condenser temperature (Sc) | U09 | -100 | 200 | C/F | |||||||
| Compressor relay status | u58 | OFF | on | ||||||||
| Fan relay status | u59 | OFF | on | ||||||||
| Defrost relay status | u60 | OFF | on | ||||||||
| Alarm relay status | u62 | OFF | on | ||||||||
| Light relay status | u63 | OFF | on | ||||||||
| Firmware version readout | u80 | 0 | 999 | ||||||||
| Sair air temperature sensor error | E29 | ||||||||||
| S5 defrost sensor error | E27 | ||||||||||
| Sc condenser sensor error | E30 | ||||||||||
| High temperature alarm | A01 | ||||||||||
| Low temperature alarm | A02 | ||||||||||
| High voltage alarm | A99 | ||||||||||
| Low voltage alarm | AA1 | ||||||||||
| Condenser alarm | A61 | ||||||||||
| Door alarm | A04 | ||||||||||
| Standby alarm | A45 | ||||||||||
| DI external alarm | A15 |
Safety Standards and Product Disposal
Safety Standards
Ensure the input voltage is correct before connecting the instrument. Do not expose the regulator to water or damp conditions. Use it only within the specified operating limits, avoiding sudden temperature changes and high atmospheric humidity to prevent condensate formation.
Product Disposal
The device must be disposed of in compliance with local waste disposal legislation.
EU Design Registration
002566703-0001
Contact Information
For more information, visit www.danfoss.com/erc.
Danfoss reserves the right to alter products without prior notice. All trademarks are property of their respective owners.
