Timeguard TS900B User Manual

Page 3

TS900B 24 Hour Immersion
Heater Time Controller

Self-cancelling and

Override switch

Time

indicator

Setting
pins

24 hour
programme ring

Store for

unused

setting

pins

Concealed

wiring for

safety

Cover
fixing
screw

Removable
cover

FITTING INSTRUCTIONS
1. Choose any suitable flat surface between switched supply

and immersion heater to fit the TS900.

2. Remove cover by undoing screw on lower front cover.
3. Place timeswitch in required position (it must be mounted

vertically with the time indicator at the top) and mark wall at
the centre of the top side.

4. Measure down from this mark 5mm/0.2" and make a second

mark. At this second mark drill a hole and plug, if necessary,
to take a No 6 woodscrew.

5. Screw in woodscrew until head is 2.5mm proud (see

diagram).

6. Place ‘Keyhole’ in back of timeswitch over screw head and

slide downwards. Now mark wall through large recessed hole
near bottom of unit. Remove Timeswitch, at this third mark
drill and plug as before.

7. Replace Timeswitch over screw head. Fit second woodscrew

into recessed hole and tighten into wall.

8. You are now ready to wire up.

5mm
minimum

To Heater

From Supply

SL N

WIRING INSTRUCTIONS
1. SWITCH OFF AT MAINS.
2. Cut cable to suit Timeswitch position and bare ends of cable,

connecting to Timeswitch as shown below.

3. From immersion heater fit live connection (brown) into

terminal 1. From immersion heater fit neutral connection
(blue) into terminal 2. From both cables fit both earth
connections (green yellow) into terminal E. From switch/supply
fit neutral connection (blue) into terminal 4. From switch /
supply fit live connection (brown) into terminal 5. Ensure all
screws are tightened.

4. Fit two cable clamps using 4 self-tapping screws and tighten

to grip outer insulation of both cables.

5. Replace cover, tighten screw.
6. Switch on mains and programme Timeswitch to your own

requirements.

5mm

2.5mm

Please refer diagrams
1-5 to sections 1-5 in
above instructions.