Neomitis Cylinder Thermostat 20-90°C | CTH | SPDT 16A Control

Description

The Neomitis CTH Cylinder Thermostat is a reliable mechanical temperature control for domestic hot water cylinders and heating system pipework. Its surface mount design makes firm contact with the tank or pipe, helping the thermostat respond accurately to water temperature and switch the heating source efficiently.

Designed for straightforward installation, the CTH uses a simple rotary dial to set the required temperature between 20°C and 90°C. With a SPDT changeover contact, 16A switching capacity and an earth terminal, it is a practical choice for hot water cylinders, wet central heating systems and pipe mounted temperature control applications.

TEMPERATURE RANGE

20-90°C

CONTACT TYPE

SPDT

SWITCH RATING

16(2.5)A

VOLTAGE

250V AC

MOUNTING

Surface

PROTECTION

IP20

Important: Installation and electrical connections must be carried out by a competent person in accordance with current UK wiring requirements, including BS 7671. Isolate the electrical supply before installation or servicing.

Compatibility note: This thermostat is intended for surface mounting on domestic hot water cylinders and heating pipes up to 40mm diameter. Ensure the sensing base makes good contact with the tank or pipe for accurate operation.

Installer tip: For cylinder applications, position the thermostat approximately one third of the way up from the base of the cylinder, with the supplied securing strap holding the sensor firmly against the tank surface.

Key Features

Wide Temperature Control

The rotary control provides a 20°C to 90°C setting range, allowing the required hot water or pipe temperature to be selected quickly and clearly.

SPDT Changeover Contact

The 1B SPDT switch action provides normally open and normally closed contacts, offering flexible control options for heating and hot water circuits.

High Switching Capacity

Terminals 1 and 2 are rated at 16(2.5)A at 250V AC, supporting dependable switching in suitable domestic heating applications.

Surface Mount Sensing

The metal sensing base is designed to make direct contact with the cylinder or pipe, helping improve temperature response.

Simple Mechanical Operation

With no programming or display required, the mechanical dial control is easy for homeowners to understand and adjust.

Secure Strap Fixing

The supplied strap and fixing hardware helps hold the thermostat securely against the cylinder or pipe, maintaining consistent sensor contact.

Technical Specifications

General

Brand

Neomitis

Product type

Cylinder thermostat

MPN

CTH

EAN

3760025250114

Mounting

Surface mounted on cylinder or pipe

Maximum pipe diameter

40mm

Electrical

Switch action

1B - SPD

Earth terminal

Yes

Recommended cable size

1-2mm²

Performance

Temperature setting range

20°C to 90°C

Differential

8K +/- 3K

Temperature rate of change

Less than 1K per minute

Insulation class

Class I

Protection rating

IP20

Storage temperature

-15°C to 60°C

Standards and Compliance

Standards

EN60730-1, EN60730-2-9

Frequently Asked Questions

What is the Neomitis CTH used for?

The Neomitis CTH is a cylinder thermostat used to monitor and control water temperature on domestic hot water cylinders and heating system pipework.

What temperature range does it cover?

The thermostat can be set between 20°C and 90°C using its rotary adjustment dial.

Can it be fitted to a pipe as well as a cylinder?

Yes. It is designed for surface mounting on both hot water cylinders and heating pipes up to 40mm diameter, provided the sensor makes good contact with the surface.

What type of switch contact does it have?

It uses a 1B SPDT changeover contact, with a 16(2.5)A / 250V AC rating on terminals 1 and 2 and a 2.5A / 250V AC rating on terminals 1 and 3.

Where should it be positioned on a hot water cylinder?

For best results, fit the thermostat approximately one third of the way up from the bottom of the cylinder, after removing a small area of insulation so the metal base contacts the tank directly.

Does it require batteries or programming?

No. The CTH is a mechanical thermostat with a simple rotary dial, so it does not require batteries, programming or a display.

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Room Dimensions

Length (in m):

Width (in m):

Height (in m):

Room Type

Living Room

Bedroom

Kitchen

Bathroom

Conservatory

Hallway

Glazing Type

Single Glazed

Double Glazed

Triple Glazed

External Walls

0 Wall

1 Wall

2 Walls

3 Walls

4 Walls

Insulation Level

Poor

Average

Good (New Build)

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