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EPKIT

Fitting and User Instructions 

for Electronic Programmer

Suitable for 

Vortex Pro Kitchen/Utility and 

Vortex Pro Internal Combi e models

IMPORTANT  

These fitting Instructions must be read in conjunction with the 

wiring diagrams given in the Installation manual supplied with the boiler

 Part No. DOC19  REV04 May 2011

FITTING INSTRUCTIONS

1. Kit contents

The Electronic Programmer Kit (Ref. EPKIT) for 
Grant Vortex Pro Kitchen/Utility and Vortex Pro 
Internal Combi e boilers

 

contains the following 

items:

1 x Grasslin 'Tactic' 7-day two channel     
electronic programmer

1 x Wiring harness – 5 x 400mm wires (Red, 
Yellow, Orange, Brown and Blue)

1 x  Fitting and User instructions

2. Electrical connections

The wiring harness must be connected to the 
electronic programmer as follows:

Blue wire:

      To 

Mains Neutral

 terminal 2 on    

the  programmer

Brown wire:

   To 

Mains Line

 terminal 1 on the   

programmer

Orange wire: 

 To

 Hot water On 

terminal 3 on  

the programmer

Yellow wire:

   To 

Hot water Off 

terminal 4 on 

the programmer (see Section 4)

Red wire:

       To 

Heating On 

terminal 5 on the  

programmer

 

3. Fitting the programmer
Important: 

Ensure the electrical supply to the 

boiler has been isolated before fitting the 
programmer

Vortex Pro Kitchen/Utility – System & 
Non-system Models

1.  Remove front and top boiler casing panels. 

Remove the four screws and lift off top cover 
from control panel.

2.  Remove Brown wire link from terminals 

1 & 4 on the boiler terminal block.

3.  Carefully push through the square pre-cut 

'knockout' section on the control panel front.

4.  Connect 

five

 wires provided to the terminals 

of the electronic programmer – refer to 
Section 2 above.

5.  Feed the wires through hole in control panel 

front and then up and to the left of the 
terminal block platform. Connect wires to 
terminals on control panel – refer to 
connection diagram in Section 4.

6.  Locate the electronic programmer in the 

square hole in control panel front – with the 
terminals pointing to the 

right

. Secure by 

turning the two screws (in upper right and 
lower left corners) a quarter turn clockwise. 

7.  Re-fit top cover to control panel and fasten 

with the four screws. 

USER INSTRUCTIONS

General notes on using the programmer

The programmer automatically controls the 
times at which your boiler operates to provide 
heating and hot water. It also provides a 
permanent display of the time of day (24 hr or 
am/pm display) and day of the week. Indicators 
on the display show when both the hot water 
(indicated by a tap symbol) and heating 
(indicated by a radiator symbol) is either ON or 
OFF.

If the electricity supply to the boiler is 
interrupted, e.g. during a power cut, the display 
will remain and the programmer will retain the 
time and on/off program settings. It will not 
have to be reset when the supply is restored.
 
The programmer is supplied with three pre-set 
program options each giving different On/Off 
settings. Refer to page 3 – 

To select and use a 

pre-set program

. Please note that these pre-

set programs will switch 

both

 heating and hot 

water ON and OFF at the 

same 

times. 

Alternatively, you can set your own program of 
On/Off settings, with different ON and OFF 
times for heating and Hot water as you require. 
Different On/Off settings for different days of the 
week can also be set. You can set up to 10 ON 
and 10 OFF commands throughout the week. 
Refer to page 5 – 

Setting your own program

Once set this program can be changed at any 
time as required.

When setting the times for the ON periods it is 
useful to remember that it might take up to an 

1

8

This manual is accurate at the date of printing but will be superseded and should be disregarded if specifications and/or appearances are
changed in the interests of continued product improvement.

All goods sold are subject to our official Conditions of Sale, a copy of which may be obtained on application.

© Grant Engineering (UK) Limited 2011. No part of this manual may be reproduced by any means without prior written consent.

Grant Engineering (UK) Limited

Hopton House, Hopton Industrial Estate, Devizes, Wiltshire SN10 2EU

Telephone:  (01380) 736920    Fax:  (01380) 736991

email:  [email protected]     website:  www.grantuk.com

hour for the house to become warm, especially 
in colder weather. Also the effect of the central 
heating will remain for a time when the central 
heating is turned off.

A hot water cylinder may take ½ hour or more 
to heat up fully. A well insulated cylinder will 
retain its heat for quite some time after the 
boiler is turned off.

When setting the time for the start of the first 
ON period it must be after midnight. The time 
for the end of the last ON period can be after 
midnight. Refer page 6 -  for the '

Shift' 

function 

section.

While setting any times, if a period of more than 
1 minute elapses since the last key was 
pressed, the programmer automatically reverts 
back to the original program. Any changes 
made up to that point will be lost as they were 
not confirmed.

To temporarily override the current switching 
time, i.e. change OFF to ON or ON to OFF, use 
the 

‘+’ 

and 

‘-’

 keys on the programmer. 

Pressing the 

‘+’

 key will advance the Heating to 

the next program operation and the 

‘-’

 key will 

do the same for the Hot Water.

NB. The programmer will NOT automatically 
return to the set program at the start of the 
next program operation. Refer to Page 6 - To 
manually override automatic operation.

For ‘Summer’ use the central heating can be 
set to OFF by pressing the 

‘+’

 key. Check that 

the ‘switching status’ display       indicates that 
the heating function is OFF.

Summary of Contents for EPKIT

Page 1: ...ll remain and the programmer will retain the time and on off program settings It will not have to be reset when the supply is restored The programmer is supplied with three pre set program options each giving different On Off settings Refer to page 3 To select and use a pre set program Please note that these pre set programs will switch both heating and hot water ON and OFF at the same times Alter...

Page 2: ... Boilers Wiring terminals Pro Combi e internal models Pro Kitchen Utility system non system NOTE When using the EP kit with an S plan type control system using 2 x 2 port zone valves the YELLOW wire is not required and should not be used IMPORTANT For Vortex Pro Combi e boilers the YELLOW wire must not be used Programming sequence diagram Reset first installation adjustment Review adjust Menu Set ...

Page 3: ... Res Menu OK 1h 1 3 Set hour 1 1 2 1 Select hour by pressing or 2 Confirm setting by pressing OK 1 Select minutes by pressing or 2 Confirm setting by pressing OK 1 Select week day or by pressing or 2 Confirm setting by pressing OK Res Menu OK 1h 1 1 2 1 Either select pre set program P01 by pressing Menu or 2 Press to go to P02 1 Either select pre set program P02 by pressing Menu or 2 Press to go t...

Page 4: ...2 24 0 2 4 6 8 10 12 4 To change from Summer to Winter time To quickly alter the time setting of the programmer when changing from Summer to Winter time or back 5 To manually override automatic operation If you want to override the automatic operation of the programmer and set either the Heating or Hot water channel to ON or OFF use the or keys as follows Res Menu OK 1h 1 2 3 4 5 6 7 14 16 18 20 2...

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