EPH Controls BST3 Operating instructions

Installation and Operation Guide
Boost Timer
BST3
PRO

Table of contents
4
5
6
8
10
11
12
14
LCD Blue Back-light
Factory Default Settings
Specications
Wiring Diagram
Caution & Safety
Mounting
Installation
Installation Drawings
How to use your Boost Timer
Installation Instructions
Operating Instructions
15

4BST3
Specications
Power supply: 230Vac 50 Hz
Contact Rating: 250Vac 13A Resistive up to 3kW
1000W lament or halogen lighting
500W uorescent lighting
100W LED lighting
Ambient Temperature: 0...45˚C
Classication: Type 1A Action (RL1)
Pollution degree: Degree 2
IP rating: IP20
Rated Impulse voltage: Resistance to voltage surge 2500V
as per EN60730
Recommended 16A RCBO or 16A MCB & 100mA
Power protection: RCD where applicable
Boost Period: 15 / 30 min / 1 hr / 2 hrs / 3 hrs

5
Boost Timer Pro 5 Boost Timer Pro
Terminals suitable for: Maximum 2.5mm2cable
Shock protection: Class 1
Case material: ABS UL94V0
Timing accuracy: Real Time Clock
Design Standard: EN 60730-2-7
Factory Default Settings
Boost Time: 0 Minutes
Back Light: On (BL1)

6BST3
Wiring Diagram
Terminal Connections
L in Live in from Mains Supply
N in Neutral in from Mains Supply
L out Live out to Load
N out Neutral out to Load
E Earth
N-Out L-Out L-In N-In
NN L L
Load Mains Supply

7
Boost Timer Pro 7 Boost Timer Pro
N-Out L-Out L-In N-In
MODEL: BST3
DESCRIPTION: BOOST TIMER - 15Mins - 3Hrs
MANUFACTURER: EPH CONTROLS LTD.
ADDRESS: CORK, T12 W665, IRELAND
CONTACT RATING: 230Vac~13A
WARNING: THIS DEVICE MUST BE EARTHED.
www.ephcontrols.com
4

8BST3
Caution!
Installation and connection should only be carried out by a
qualied person.
Only qualied electricians or service engineers are permitted
to open the Boost Timer.
If the Boost Timer is used in a way not specied by the
manufacturer, its safety may be impaired.
Prior to setting the Boost Timer, it is necessary to complete all
required settings described in the section.
Provision must be made in the xed wiring to incorporate
a minimum 3mm contact separation in both poles of the
supply.

9
Boost Timer Pro
Safety
Switch the 230V mains supply o by removing the relevant
fuse or switching o the relevant MCB prior to beginning the
installation.
A minimum conductor size of 2.5mm2must be used to supply
the Boost Timer.
Ensure the correct sized cable is used to connect the Boost
Timer to the relevant appliance to be switched.
For 3 kW loads, a minimum cable size of 1.5mm2should be used.
As per diagram on page 6 and 7.
Connect the mains supply cables to the correct terminals;
L in, N in and Earth.
Connect the load cables to the correct terminals, L out, N out
and Earth.

10 BST3
Mounting
Dimensions: 87mm x 87mm x 32mm
Flush mounted dimensions: 87mm x 87mm x 13mm
Flush mounted box depth: Minimum 25mm
Surface mounted box depth: Minimum 25mm
The mounting height should be 1.5 meters above oor level.
This timer can be mounted in the following ways:
1. Flush wall mounted
The Boost Timer can be mounted to any standard
ush mounted single gang box provided there is a
minimum depth of 25mm.
2. Surface wall mounted
The Boost Timer can be mounted to any standard
surface mounted single gang box provided there is a
minimum depth of 25mm.

11
Boost Timer Pro
Installation
Fix the single gang box to the wall using two xing screws.
Connect the mains supply cable to L in, N in and Earth
terminals respectively.
Connect the appliance cable to L out, N out and Earth
terminals respectively.
Ensure any bare conductor is sleeved.
If the appliance cable is to exit through the front of the Boost
Timer, it will be necessary to remove the breakout on the front
of the Boost Timer.
Please ensure that the appliance cable is gripped with the
cable clamp provided.
Fit the Boost Timer to the single gang box with the two M3.5
screws provided and ensure that no conductor is damaged in
the process.
Switch on the mains and test that the Boost Timer is
operational.

12 BST3
1
87
87
13 19 68
69
60,3
2

13
Boost Timer Pro 13 Boost Timer Pro
3 4
5
Break out Appliance Supply
Appliance
Supply
Appliance
Supply

14 BST3
How to use your Boost Timer
The Boost Timer can be used to switch on electrical appliances
up to 3kW.
Examples of appliances that can be controlled include:
Immersion elements / Panel heaters / Lighting / Boilers etc.
By pressing the boost button:
One time - the appliance will be switched on for 15 minutes.
Two times - the appliance will be switched on for 30 minutes.
Three times - the appliance will be switched on for 1 hour.
Four times - the appliance will be switched on for 2 hours.
Five times - the appliance will be switched on for 3 hours.
To cancel the Boost Timer, simply press the Boost button again.
When the Boost is activated:
The red LED will illuminate for the boost time period.
The LCD screen will show the time the boost period is active for
and will then begin to countdown the remaining time.

15
Boost Timer Pro
LCD Blue Backlight
There are two options available on the Boost Timer.
To choose between having the blue backlight On or O, simply
press and hold the Boost button for 5 seconds.
BL1 – Blue Backlight On
BL0 – Blue Backlight O
BL1 – The LCD blue backlight will illuminate for the duration of
the boost time period.
BL0 – The LCD blue backlight will only illuminate for the rst 5
seconds of the boost time period.
On BL1

EPH Controls IE
EPH Controls UK
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[email protected].uk
www.ephcontrols.co.uk
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20200522_BST3_Guide
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