201-2001
heat interface unit
2
Safety Instructions
NOTE: Risk of electric shock. Live parts. Shut off the electric
supply before opening the HIU cover.
1
During installation and maintenance operations, always
avoid direct contact with live or potentially hazardous parts.
2
The device must not be exposed to water drops or humidity,
direct sunlight, the elements, heat sources or high intensity
electromagnetic fields.
This device cannot be used in areas at risk of explosion or
fire.
3
The device must be connected to an independent bipolar
switch. If work has to be done on the device, switch off the
electric supply first. Do not use devices with automatic or
time reset, or which may be reset accidentally.
4
Use suitable automatic protection devices in compliance
with current legislation.
5
The device must always be earthed before it is connected to
the electric supply. If the device has to be removed, always
disconnect the earth connection after disconnecting the
electric supply. Check that the earth connection has been
made to the highest of standards under current legislation.
6
Electrical installation only be carried out by a qualified
technician, in accordance with current requirements.
General Information
•
Please leave the manual as a reference guide for the user.
•
Dispose of any packaging in an appropriate manner, most
of which can be recycled.
•
In this Installation, Operation and Maintenance guide we
have endeavoured to make the information as accurate as
possible.
We cannot accept any responsibility should it be found that in
any respect the information is inaccurate or incomplete or
becomes so as a result of further developments or changes to the
products.
Technical Specification
Medium:
Water
Max. percentage of glycol
30%
Max. temperature:
85˚C
Max. static working pressure:
Primary:
10 bar
Domestic hot water:
10 bar
Primary differential pressure capability:
0.9 bar
Actuator on 2-port control valves
Power supply:
230 V (ac)±10% 50 Hz
Power
6.5 W
7 VA
Protection class:
IP 20
Maximum ambient temperature:
40˚C
Material
Components:
brass BS EN 12165 CW617N
Back plate:
galvanised steel
Key to Symbols
Primary circuit flow
Primary circuit return
Domestic hot water flow
Heating circuit flow
Combined return
