WarmFlow TW180V, TW210V, TW250V, TW300V, TR250V User Instructions

Cylinder Manual

Incorporating: User Instructions

Installation Instructions
Guarantee Registration

Open Vented Cylinders

Stainless Steel Water Heaters

Products covered by this manual:

Twin Coil

TW180V TW210V TW250V TW300V

Triple Coil

TR250V TR300V

LEAVE THIS MANUAL WITH THE END USER Q12-032 rev 02 Sep ‘11

INSTALLATION AND REGISTRATION

This appliance must be installed as described herein and the Guarantee Registration section
completed and returned to the manufacturer with proof of purchase (e.g. receipts / invoices).

The complete guarantee policy statement is included in Section 6, page 9.

FAILURE TO CORRECTLY INSTALL AND REGISTER THIS PRODUCT WILL

INVALIDATE ALL GUARANTEES

TECHNICAL, SPARES & GUARANTEE CLAIMS

For technical advice about the installation or use of this appliance, please contact the Warmflow
Customer Care Centre by post, phone, fax or email at the addresses below. Please also refer
to our website.

Should replacement components be required, a list of available spares is provided in Section

5.2, page 8.

In the unlikely event that replacement components might be required within the guarantee
period, please notify the Customer Care Centre in writing, by post, fax or email, stating the
nature of the fault and the part number of the replacement components required.

Warmflow Customer Care Centre

Warmflow Engineering
Lissue Industrial Estate
Moira Road
Lisburn
BT28 2RF
Northern Ireland

Telephone

United Kingdom: 028 9262 1515
Republic of Ireland: 048 9262 1515

Facsimile

United Kingdom: 028 9262 0869
Republic of Ireland: 048 9262 0869

Email

[e-mail]

Website

www.warmflow.co.uk

Page 2 of 9

1 USER INSTRUCTIONS

1.1 General Information

Your hot water cylinder has been designed to give many years of trouble free service and is
made from hygienic, high grade, duplex stainless steel.

The flow temperature of the hot water can be adjusted to your requirements, and should ideally
be set to 60°C. Choosing a higher temperature increases the energy required to heat the
cylinder and maintain its temperature, costing more in fuel.

1.2 Cylinder Thermostat

All cylinders are fitted with cylinder thermostats to control the
heat input to the cylinder from a remote heat source, such as a
boiler, heat pump or solar thermal installation.

The temperature of each cylinder thermostat is adjustable
between nominally 40°C and 70°C. Turn the control knob
clockwise to increase temperature, and anticlockwise to
decrease.

Each cylinder thermostat has a built-in manually reset safety
thermostat which will ‘lock out’ in the event of the cylinder
overheating and which will need to be reset in order to restore
operation. Remove the lock-out cover and depress the red
button to reset.

1.3 Immersion Thermostat

Isolate ALL electrical supplies to the appliance before removing the immersion cover.

All cylinders are supplied with an immersion heater to allow the
cylinder to be heated electrically. The immersion heater has an
immersion thermostat, the temperature of which is adjustable
between nominally 10°C and 70°C. Remove the immersion
heater cover and turn the control dial anticlockwise to increase
temperature, and clockwise to decrease.

The immersion thermostat also has a built-in manually reset
safety thermostat which will ‘lock out’ in the event of the cylinder
overheating and which will need to be reset in order to restore
operation. Remove the immersion heater cover and depress the
red button to reset.

2 INSTALLATION REQUIREMENTS

The cylinder must be installed vertically (not on its side) in a frost-free indoor location.
The cylinder must be open vented i.e. supplied via an open vented expansion tank and have a

vertical vent pipe of at least 19mm internal diameter.
The mains water supply must be from a public source (i.e. not from a private borehole) and the

hardness of the water must be less than 200 mg/litre. Where hardness in excess of 200 mg/litre
is experienced, a suitable and effective hard water treatment must be installed.

All 22mm coils must be fully pumped – gravity circulation is NOT suitable for the 22mm coils.
Gravity circulation may only be used on the 28mm coil(s).

Control dial

Reset button

Control dial

Reset button