TCR - Temperature Controller Vemer - Free user manual and instructions

Product Type	Electronic thermostat (temperature controller)
Brand	Vemer
Model	TCR
Dimensions (approx.)	35 x 90 x 60 mm (2 DIN modules)
Weight (approx.)	150 g
Power Supply	230 Vac (-10% to +10%), 50/60 Hz
Power Consumption	Max 4 VA
Output	Normally open relay 16(2) A / 230 V
Regulation Type	ON/OFF with fixed differential 0.2°C
Temperature Regulation Range	8°C to 26°C
Operating Temperature	-10°C to +55°C
Storage Temperature	-20°C to +60°C
Relative Humidity	15% to 95% non-condensing
Degree of Protection	IP20
Mounting	DIN rail (2 modules)
Probe Type	NTC 10 kΩ at 25°C, removable (included)
Max Probe Distance	100 m
Operating Modes	Comfort, Economy, Antifreeze (fixed 5°C)
Setpoint Adjustment	Trimmers for comfort and economy mode
Indications	LEDs for power, output status, economy mode, antifreeze mode
Safety Standards	EN 60730-2-9, overvoltage category III, pollution degree 2
Installation Height	Approx. 150 cm from floor, on inner walls
Wiring	Terminals for max 6 mm² cable, probe wiring max 2.5 mm²
Maintenance	Clean with dry cloth; no liquids
Spare Parts / Accessories	Remote probes available (VE152500, VE124400)

Frequently Asked Questions - TCR Vemer

What is the Vemer TCR temperature controller used for?

The Vemer TCR is an electronic thermostat designed for temperature regulation in heating systems. It supports three operating modes: Comfort, Economy, and Antifreeze.

How do I install the Vemer TCR on a DIN rail?

The TCR mounts on a standard DIN rail (2 modules). Install it at about 150 cm from the floor on an inner wall, away from direct sunlight, heat sources, and drafts. Ensure the location has adequate air circulation.

What are the power supply requirements for the TCR?

The TCR requires a 230 Vac supply (-10% to +10%) at 50/60 Hz, with a maximum consumption of 4 VA.

How do I adjust the setpoint temperature for Comfort and Economy modes?

Use the front trimmers: trimmer ⑤ for the Comfort setpoint (range 8°C to 26°C) and trimmer ⑥ for the Economy reduction (Tcomfort minus Teco). Note: the setpoint cannot drop below 8°C.

What do the LEDs on the Vemer TCR indicate?

LED ① indicates power supply; LED ② shows output status (relay active); LED ③ lights when economy mode contact is closed; LED ④ lights when antifreeze mode contact is closed.

How do I select the operating mode (Comfort, Economy, Antifreeze)?

Select modes using external voltage-free contacts connected to terminals 5-7 (Antifreeze) and 6-7 (Economy). Refer to the operating modes table in the manual for the logic.

What is the fixed setpoint for Antifreeze mode?

The Antifreeze mode setpoint is fixed at 5°C to prevent freezing. This cannot be adjusted with the trimmers.

How does the TCR detect a probe error?

If the probe is open, short-circuited, or measures temperatures outside the range (-15°C to +60°C), the relay output opens and LED ② flashes. The error clears automatically when the temperature returns to the operating range.

What is the maximum distance for the remote probe?

The included NTC probe (10 kΩ at 25°C) can be extended up to 100 meters. Use a cable with max 2.5 mm² section.

How should I clean and maintain the Vemer TCR?

Clean the device with a dry cloth only. Do not use liquids or solvents. No other regular maintenance is needed. Always have installation and repairs done by a qualified person.

USER MANUAL TCR Vemer

① Led “power supply”
② Led "status output"
③ Led “economy mode contact status”
④ Led "antifreeze mode contact status"
⑤ Trimmer to set “setpoint comfort”
⑥ Trimmer to set “reduction for economy mode”

Operating modes

	Comfort mode	Economy mode	Antifreeze mode
Input “Economy”(terminals 6-7)			indifferent
Input “Antifreeze”(terminals 5-7)
Led ⚫co	○		indifferent
Led ❖ Antifreeze	○	○
Setpoint	Tcomfort	Tcomfort – Teco*	5°C

(*) Note: the setpoint value can not be inferior to 8^ C,
even though Tcomfort - Teco < 8°C
(for example: if Tcomfort is 12^ C and Teco 6^ C the set point will be not 6^ C but 8^ C).

User Manual

TEMPERATURE CONTROL RELAY

Read all instructions carefully

■ DIN rail mounting electronic device for temperature regulation in heating and suitable for installations with overvoltage category III and pollution degree 2, according to EN 60730 standard.

SAFETY WARNINGS

During product installation and operation it is necessary to observe the following instructions:

1) The instrument must be installed by a qualified person, in strict compliance with the connection diagrams.
2) Do not power or connect the instrument if any part of it is damaged.
3) After installation, inaccessibility to the connection terminals without appropriate tools must be granted.
4) The instrument must be installed and activated in compliance with current electric systems standards
5) Before accessing the connection terminals, verify that the leads are not live.
6) In the electrical system of the building where the instrument must be installed, a switch and a protection device from the overcurrents must be present.

Code Model Description

VE447900 TCR Electronic thermostat 2 DIN with remote probe

TECHNICAL SPECIFICATIONS

• Power supply: 230Vac (-10% ÷ +10%) 50/60Hz
• Absorption: max 4 VA
- Terminals for max 6 mm ^2 cable section
• Output: normally open relay 16 (2)A / 230V (1B type actions)
- Type of regulation: ON/OFF with differential of 0,2°C (fixed)
- Precision: ± 1^
• Temperature regulation range: 8°C ÷ 26°C
• Operating temperature: -10^ ÷ +55^
• Storage temperature: -20^ ÷ +60^
• Relative humidity: 15÷95% non-condensing
• Degree of protection: IP20
• Insulation: reinforced among accessible parts (frontal) and all other terminals
- NTC probe (10kΩ at 25°C) removable up to a maximum distance of 100 meters
• Maximum wire size for connecting to the probe: 2.5 mm

AVAILABLE PROBES

Wall mounting For immersion For pipes

Included cod. VE152500 cod. VE124400

Three-panel image showing a device with a 80x side panel, a wire-wrapped cable, and a coiled black cable (no text or symbols visible)

INSTALLATION

• TCR must be installed at a height of about 150 cm from the floor, on inner walls, protected from direct solar radiations and from any heat source (like lamps, heating pipes), away from positions with total lack of air inlet, niches, corners, doors, windows and not behind curtains.
• Connect power supply, probe, relay output contacts and any clean contacts as shown in the box “wiring diagrams”.

OPERATION

• The selection of operating mode (comfort, economy and antifreeze) occurs via through free of voltage contacts
• The setpoint of comfort and economy modes are set by trimmer while the antifreeze setpoint is fixed at 5°C
• The operation of the relay output is indicated by the switching on of the LED ② “Output Status”

The box "operating modes" shows the characteristics of each mode.

Signaling probe error

In case of error of the probe the relay contact (terminals 3-4) is still open and flashes the led ② “output status”. It happens in the following cases:

• open probe or short circuit;
• out-of-range-temperature- values (inferior to -15^ or superior to +60^ ):

In case of out-of-range- measurement the recovery automatically happens when the temperature returns again the operating range.

REFERENCE STANDARDS

Compliance with Community Directives: 2006/95/EC and 2004/108/EC

is declared with reference to the following Harmonized Standards: EN 60730-2-9