Danfoss RET M Operating instructions

RET M Electronic mains powered dial

setting thermostat with LCD display

User & Installation Instructions

Certification Mark

Installation Instructions 3-9

User Instructions 10-14

Instructions d’installation 15-21

Instructions d’utilisateur 22-24

Anweisungen für Installati 25-31

Benutzeranweisen 32-34

Instrucciones de instalación 35-41

Instrucciones del usuario 42-44

Instruktions vejledning 45-51

Brugervejleding 52-54

Installatie handleiding 55-61

Instructiesevoor Gebruik 62-64

Ïäçãßåò åãêáôÜóôáóçò 65-71

Ïäçãßåò ÷ñÞóçò 72-74

Instrukcja instalacji 75-81

Instrukcja Użytkownika 82-84

Montavimo instrukcijos 85-91

Informacija Vartotojui 92-94

Istruzioni per l’uso 95-100

Istruzioni per l’utente 101-103

Installation Instructions

Features RET M,RET M-LS,RET M-NSB

Temperature Range 5 - 30°C

Setting knob and LCD display l

Chrono-proportional or On/Off control l

Heat or cool operation

incl compressor delay timer l(1)

Selectable °F or °C scaling l

Output relay contact rating 10-264 Vac, 50/60 Hz, 3 (1) A

Switching action 1 SPDT

Power supply 230 Vac ± 15%,50/60 Hz

Maximum ambient temp 45°C

Ball Hardness 75°C

Rated Impulse Voltage 2.5kV

Ball Pressure Test 75°C

Dimensions (mm) 85 wide x 86 high x 42 deep

(1) Compressor delay only available if thermostat is set to cool operation.

Installation Instructions

Mounting

Fix at a height of 1.5m

approx from the ﬂoor,

away from draughts

or heat sources such

as radiators, open ﬁres

or direct sunlight.

Please Note:

This product should only be installed by a qualiﬁed electrician or

competent heating installer and should be in accordance with the

current edition of the IEEE wiring regulations.

Installation Instructions

Wiring

Installation Instructions

DIL switch settings

Slide the DIL switches to the settings required.

ON/OFF - boiler switches ON when below set temperature and

OFF when above.

CHRONO -

energy saving feature which ﬁres the boiler at

regular intervals to maintain a set temperature, achieving a

constant ambient environment for the user.

o

use 6 Cycles for radiator systems.

o

use 3 Cycles for underﬂoor heating.

Installation Instructions

Heating selection

Cooling selection

COOL

ON/OFF

6 CYCLES

°F

COOL

NO DELAY

4 MIN DELAY

°F

HEAT

CHRONO

3 CYCLES

°C

HEAT

2 MIN DELAY

°C

COMPRESSOR DELAY

Installation Instructions

Mounting (continued)

Resetting the unit

When power is ﬁrst applied,

remove the dial and press the

RESET button for 2 seconds.

RESET

button

Installation Instructions

Locking & Limiting

Locking - setting the thermostat at a temperature which

cannot be altered by the user.

Limiting - allowing the user to alter the temperature within

a predeﬁned range, which is less than the full range of the

product (i.e. between 18-22°).

Installation Instructions

What is a room thermostat?

...an explanation for householders

A room thermostat simply switches the heating system on and off

as necessary. It works by sensing the air temperature, switching on

the heating when the air temperature falls below the thermostat

setting, and switching it off once this set temperature has been

reached.

Turning a room thermostat to a higher setting will not make the

room heat up any faster. How quickly the room heats up depends

on the design of the heating system, for example, the size of boiler

and radiators.

Neither does the setting affect how quickly the room cools down.

Turning a room thermostat to a lower setting will result in the room

User Instructions

Table of contents

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