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Thermowarm TWT

4

EN

Installation and operating instructions

General Instructions 

Read these instructions carefully prior to 

installation and use. Keep this manual for 

future reference.

The product may only be used as set out in 

the assembly and operating instructions. The 

guarantee is only valid should the product be used 

in the manner intended and in accordance with 

the instructions. 

 

Application 

Thermowarm TWT is a series of easily installed 

convectors designed for heating installations 

of a more technical nature such as offshore, 

service areas, utility rooms and vehicles. TWTC 

can also be used in corrosive and aggressive 

environments.  

Enclosure class TWT: IP44, TWTC: IP54.  

 

Mounting

The appliance is supplied with a pre-installed 

wall bracket for attaching horizontally to the 

wall using four screws. There is a template 

for placing the screws on the bottom of the 

carton. Stick a sharp instrument through the 

marks on the carton to mark where to place 

the screws. The top two holes are “keyholes”. 

See the dimensions on the introductory pages. 

For minimum distance, see diagrams on 

introductory pages. 

Connection  

TWT100 is designed for permanent installation. 

The installation, which should be preceded by 

an isolator switch with a contact separation 

of at least 3 mm, should only be wired by a 

competent electrician and in accordance with 

the latest edition of IEE wiring regulations. 

TWTC is equipped with a cord and plug for 

connection to earthed outlet sockets.  

Replacement of cable  

If the cable is damaged the unit must be sent to 

Frico for replacement. Contact Frico Technical 

Support. 

Start-up 

When the unit is used for the first time or after 

a long period of non-use, smoke or an odour 

may result from dust or dirt which has collected 

on the element. This is completely normal and 

disappears after a short time. 

  

Maintenance 

In all electrical heating appliances, small 

clicks can occur due to movement when the 

material expands and contracts with changes in 

temperature. 

As the components are maintenance-free, no 

maintenance other than cleaning is necessary. 

The frequency of cleaning can vary depending 

on local conditions, although it should be at 

least twice a year. Grilles and elements can 

be vacuum cleaned or wiped using a damp 

cloth. Use a brush when vacuuming to prevent 

damaging sensitive parts.  

Avoid strong solvents such as acetone or 

similar, as well as alkaline or acidic detergents. 

The plastic end covers must not be exposed to 

oily substances. 

Overheat protection 

The convector is fitted with overheat protection.  

TWT100: 

The overheat protection can be reset 

by pushing the button on the end plate of the 

heater. 

TWTC: 

The overheat protection is reset by 

pressing the button located under a threaded 

cover at the side of the heater. The cover can 

be removed by a screwdriver. 

Control 

Thermowarm features an integrated 

thermostat with setting range 0 – +35 °C. On 

TWTC the thermostat is concealed to make it 

difficult for unauthorised persons to change 

the temperature setting. TWT100 has a circuit 

breaker.  

Packaging

Packaging materials are chosen with 

consideration to the environment and are 

therefore recyclable.  

 

TWT100: 

A Celsius scale is marked on the side 

of the thermostat dial. The dial is on the right 

side of the heater. The scale of the thermostat 

dial can be turned to calibrate the thermostat 

to the actual room temperature.  

TWTC: 

The thermostat is protected under a 

threaded cover on the right side of the heater.  

The cover can be removed by a screwdriver. 

The thermostat is set by turning the notch to 

the desired temperature. See the introduction 

pages. 

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