Center EHE0200158 Installation Manual

Installation Guide
for EHE0200158 Frost Thermostat
Frost Thermostat Application
The Frost Thermostat can be installed to protect either the whole
central heating system, or the boiler and localised pipework.
If the Frost Thermostat is installed to protect the central heating
system it must be sited within the dwelling in a place where a
rise and fall in ambient air temperature can be detected i.e. in a
room with a radiator. The wiring for this is shown in the wiring
diagram overleaf.
The Frost Thermostat must be wired to override all other time
and temperature control and preferably to switch on the
heating circuit, rather than the hot water circuit.
When a Frost Thermostat is installed on a central heating
system, the Connection Unit should only be switched off for
servicing or maintenance. If the system is to be switched off
for any other reason e.g. holiday, then switching MUST only be
carried out at the programmer or time clock.
2. Mount the backplate to wall
a. Wall box mounting
3. Wiring options
a. Wall box wiring
Fixing holes spaced
to suit BS4662
Screws supplied
1. Remove the cover from the backplate
b. Surface mounting
b. Surface wiring
CAUTION: Disconnect
system power supply
before removing cover.
Use wall box fixing holes
or alternatives shown
Screws supplied