Siemens RDF880KN/NF User Manual

A6V

11282546

Touch Screen Flush-mount Room

with an additional HMI for

Thermostats with KNX Communications

Under Floor Heating (UFH) control application

Variable Refrigerant Flow (VRF) commands via KNX S-mode

· Large display, touch screen with backlight

· VRF HMI: adjust setpo int, fan mode, fan speed and operating modes

· 2-position (ON/OFF) temperature control with potential free output for UFH

via build-in / external temperature sensor

· Display room temperature value (°C) and relative humidity value (% r.h.) via a build-in temperature and humidity sensor

· One setpoint adjustment for both VRF HMI and UFH controls

· Fan auto and manual speed setting from 1 up to 7 speed

· Operating mode selection for VRF: AUTO, COOL, HEAT, FAN and DRY

· Operating mode selection for UFH: Comfort and Protection

· Economy operating mode for both VRF and UFH to save energy

· 2 mult ifunctional inputs (see details in functional descriptions)

· Adjustable contro l parameters for alternative settings

· KNX bus communications via S-mode and LTE-mode

· Integration to VRF system via S-mode and third party gateways

· Commissioning via ETS download

· Wizard function for fast commissioning via HMI

· Alarm / Error information

· AC 230 V operating voltage

· RDF880KN/NF: Mounting on recessed square 86 mm box with 60.3 mm

fixing centers and min 40 mm depth, requires additional mounting frame to complete installation

RDF880KN/NF

A6V11282546_en--_a 2018-04-19

Building Technologies

Use

More than just room temperature control via a connected VRF system or a UFH system or both:

Typical applications:

· Residential apartments

· Small office or commercial buildings

· Schools / Universities

For the VRF HMI, the unit interfaces to VRF systems via a third party gateway for:

· User application selection: - UFH only or VRF only or both

· Setpoint adjustment: - maximum / minimum limitations

· Fan speed adjustment: - auto / manual speeds (up to 7 speeds)

· Operating mode selection: - AUTO, HEAT, COOL, FAN and DRY

· Economy mode: - energy saving

· Fan swing adjustment (optional): - auto swing or fix at any position (10)

· Delay off timer (optional): - allow up to 23 hours operations before off

For the control of the following pieces of heating equipment:

· Floor Heating

· Thermal valves or zone valves

· Gas or oil boilers

· Fans

· Pumps

Functions

The configuration can be done locally or remotely via one of the following:

· Local HMI & DIP switches

· Synco ACS (UFH only)

· ETS4/5 (binding S-mode objects for VRF & UFH)

· Room temperature control via a built-in or external room temperature sensor

· Calibrations for both internal temperature and relative humidity sensors

· Display of current room temperature or setpoint in °C

· Minimum and maximum limitation of room temperature setpoint

· Fan speed adjustment, auto, manual (up to 7 speeds)

· Selection of VRF operating mode:

à AUTO, HEAT, COOL, FAN and DRY

· Selection of UFH operating mode:

à Comfort and Protection

· Energy saving (Economy mode) for both VRF and UFH

· Key lock function: unlock, total lock and setpoint lock

· 2 multifunctional inputs, freely selectable for:

- External room temperature or return air temperature sensor

- Window contact

- Fault input

- Monitor input for temperature sensor or switch state

· Floor heating temperature limitation

· Display of outdoor temperature and time scheduling via KNX bus

· Reload factory settings for commissioning and control parameters

Optional: enable / disable via parameters

· Relative humidity display via a built-in humidity sensor

· Fan swing selection: auto swing or fix at any position (up to 10)

· Delay off timer: up to 23 hour operations

· Chinese text display for 4 navigation icons

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Applications

RDF880KN/NF is designed to provide easy-to-understand HMI for any existing VRF system installed in residential homes and apartments where Under Floor Heating (UFH) room thermostat may be required at the same time.

RDF880KN/NF has three kinds of applications including VRF HMI or UFH or both.

Applications are selectable via DIP switches.

Download via ETS

(All in OFF positions)

UFH only

VRF HMI only

VRF HMI and UFH

UFH Application

For selection under application mode via HMI, refer to user manual A6V11272225 for selecting applications.

For the UFH application, RDF880KN/NF provides an ON/OFF output to control water valve to maintain a comfort level of room temperature.

Room thermostat to control the valve for the floor heating application

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VRF Application (HMI only)

For the VRF application, RDF880KN/NF provides an easy-to-understand HMI for adjusting frequent used operations of the VRF systems such as adjustments of temperature setpoint, fan speed, VRF operating mode, etc.

Since all VRF brands have their own communication protocols

between the remote control unit and VRF equipments (e. g. indoor

or outdoor units), RDF880KN/NF can send all standard KNX

commands (S-mode KNX objects) via the KNX bus to a third party

KNX/VRF gateway (as a protocol converter) and then communicate

indirectly with the VRF indoor or outdoor units. Effectively, it works

similarly like a remote control unit of a VRF system.

Note that RDF880KN/NF cannot replace all functions of the remote

control unit of the VRF system but the following typical VRF

functions:

· Temperature - provide current room temperature value

- adjust temperature setpoint

· Fan - select auto or manual speed up to 7 levels

- select auto swing or fixed swing positions

· Operation - set to AUTO, HEAT, COOL, FAN and DRY

Typical VRF Systems

(Provided by 3rd Party, non-Siemens products)

Integration

via KNX Bus S-mode

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Other Heating Applications

RDF880KN/NF is not limited to UFH applications but also for the following heating applications such as radiators, wall hung boilers, etc.

Room thermostat to control the valve of

the radiator application

Room thermostat with direct control of a

gas-fired wall-hung boiler

Room thermostat with direct control of a

heat pump (pre-controlled by manual

mixing valve)

F1 Thermal reset limit thermostat F2 Safety limit thermostat

M1 Circulating pump

Room thermostat with direct control of a

gas-fired floor-standing boiler

Room thermostat with direct control of

hydronic floor heating system

N1 Room thermostat V1 2-port valve V2 Mixing 3-port valve with manual adjustm ent V3 Magnetic valve

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Type summary

Product no. Stock no .

Operati ng voltage

RDF880KN/NF2) S55770-T398 AC 230 V --

ON/OFF output with potential free input from AC 24…230 V

Mounting frames are not included and must be ordered separately. (See “Accessories”)

Ordering

· When ordering, indicate product number, SSN and name.

e.g. RDF880KN/NF (S55770-T398) heating thermostat with VRF HMI

· A mounting frame or multi-frame must be ordered for RDF880KN/NF installation. (See “Accessories”)

· Order valve actuators separately.

Equipment combinations

Type of unit Product no. Data sheet

Cable temperature sensor or changeover sensor cable length 2.5 m NTC (3 kW at 25 °C) Room temperature sensor NTC (3 kW at 25 °C) Cable temperature sensor, cable length 4 m NTC (3 kW at 25 °C)

Control outputs

3-pos ON/OFF DC 0..10 V

-- Square conduit box

QAH11.1

QAA32

QAP1030/UFH

Suitable for

1840

1747

1854

ON/OFF actuators

Electromotoric ON/OFF actuator

Electromotoric ON/OFF valve and actuator

Zone valve actuators

Thermal actuator

Damper actuator

Rotary damper actuator

only available in AP, UAE, SA and IN

for radiator valve

for small valves 2.5 mm

SFA21...

MVI…/MXI…

SUA…

STA23...

STP23...

GDB..

GSD..

GQD..

GXD..

4863

A6V11251892

4832

4884

4634

4603

4604

4622

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both QAH11.1 and QAP1030/UFH are for floor heating applications, such as temperature limitation controls. QAP1030/UFH has a special head and 4 m long that is more suitable for such application.

Accessories

Note:

Refer to data sheets of the actuators for the maximum number of parallel operation.

Designation Product no. / SSN Data sheet

Single mounting frame*), Ivory White

KNX Power supply 160 mA (Siemens BT LV) KNX Power supply 320 mA (Siemens BT LV) KNX Power supply 640 mA (Siemens BT LV)

See the dimensions of mounting frame on page 24.

ARG800.1 / S55770-T370

5WG1 125-1AB02 5WG1 125-1AB12 5WG1 125-1AB22

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Mechanical design

INFORMATION

Operation and settings

The thermostats consist of the following parts:

· Front panel with electronics, operating elements and built-in room temperature and relative humidity sensors.

· Mounting base with power electronics.

· Mounting frame is an additional part to complete the installation for

RDF880KN/NF, e.g. single or multi-frames.

The rear of the mounting base contains the screw terminals. Slide the front panel in the mounting base and snap on.

Display

Status sy mbols:

Economy active Alarm / Service active

Delay timer active Key lock active

Floor heat active Fan active

VRF operating modes

Selection symbols:

Indoor temperatur e VRF fan speed

Outdoor temperature VRF fan swing

Relative humidity

STATUS & OPERATION of the

room thermostat

SELECTIONof

available information and VRF fan modes

1st line: temperature or humidity, values of parameters 2nd line: parameters and alarms

Both sides: STATUS

ADJUSTMENTfor temperature setpoint, fan speed, operating modes of VRF and

Floor Heating, more INFO and settings (for example, Alarm, Delay Off Timer, etc.)

Operational icons:

Increment, decrement OR selection

ƒ „

Selection OR move to next items

Temperature, relative humidity OR

parameter values, etc.

Parameters OR password, etc.

Setpoint mode (temperature only)

Fan mode OR fan speed mode

VRF & floor heat operating modes

More info & settings

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+ 16 hidden pages

Siemens RDF880KN/NF User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual