GreenBrook T109 Installation & Operating Instructions

Installation/Operating
Instructions for
Dual Tariff Boost Timer
Please read the instructions fully before
attempting installation.

IMPORTANT

This unit should be installed to current
IET wiring regulations if in doubt
consult a qualified electrician.
• Timer must not be mounted on a
flammable surface.
• Ensure that the timer does not come
into contact with any combustible
materials such as towels or bedding.
• Ensure at least a 300mm air space
is allowed around the timer.
THIS TIMER SHOULD NOT BE
FITTED ONTO A CONDUCTIVE
SURFACE (I.E METAL)

INSTALLATION

1. Before you begin to install.
DISCONNECT THE MAINS SUPPLY
2. The Dual Tariff Boost Timer is suitable
for fixed wiring only.
3. The following cable cross sections
are possible:
Dia.1
3 x 2.5mm
(2X) output
Dia.2
3 x 4mm
(2X) output
4. Select the single or twin box fixing
points on the plate.
5. If the timer is to be surface mounted:
select the single or twin fixing points
on the back plate.
6. Wire entry from rear, both sides
possible.
Dia.3
Box
- T109
2
2
Dia.4
Box
7. Connect main cable as shown in
Dia.5.
8. Select desired flexible cable outlet
to immersion heaters and using pliers
remove the selected slot.
9. Clamp cables using attached cable
clamp.
NOTE
Use the terminals 1 to 5 as identified.
ON/OFF
SWITCH
Dia.5
MAINS
SUPPLY
10. Connect the 'BOOST' and the
'TIMED ON' as required in Dia.6,7&
8.
11. Assemble the timer to the back
plate by aligning the location pins
on the top of the backplate with
the cut outs provided on the clock
body. Lock in position using a fixing
screw.

APPLICATIONS

This timer controls the use of cheap
rate electricity during the night to heat
the water in your tank for the following
applications:
MAINS
SUPPLY
TIME ON LOAD
Dia.6
Two seperate immersion heaters.
BOOST LOAD
MAINS
SUPPLY
TIME ON LOAD
Dia.7
Single immersion heaters.
BOOST LOAD
MAINS
SUPPLY
TIME ON LOAD
Dia.8
Dual immersion heaters.
BOOST
BOOST LOAD
TIME ON LOAD
NEUTRAL
BOOST LOAD