Danfoss 103 Installation And User Manual Download Page 4

Page: 4 / 16

Installation

1. Loosen the fi xing screw in the

base of the unit to release the
grey plastic Wiring Cover. Ensure
the protective tape over the
thumbwheel remains in place.

2. Holding the unit clockface

downwards, press fi rmly in the
centre of the wallplate and slide
it from the module as shown.

Installa

tion

Pre-Selector wheel

Selector switch

Plug-in replacement
module

Wallplate/Terminal
block (not with FRU
units)

wallplate/

terminal

block

plug-in

module

NB. For FRU units - go straight to to point 4 on page 5

Summary of Contents for 103

Page 1: ...Installation and User Guide Danfoss Heating 103 Electro mechanical 24 hour timeswitch for controlling hot water and heating Including Factory Replacement Units FRU...

Page 2: ...orary overrides 12 Contact details 16 For a large print version of these instructions please call Marketing on 01234 364 621 Danfoss can accept no responsibility for possible errors in catalogues broc...

Page 3: ...ower supply 230 Vac 15 50 Hz Switching action 1 x SPST Type 1B Max Switch Rating 264Vac 50 60Hz 6 2 A Timing Accuracy 1 min month Enclosure Rating IP20 Max Ambient Temperature 55 C Dimensions mm W H D...

Page 4: ...l remains in place 2 Holding the unit clockface downwards press firmly in the centre of the wallplate and slide it from the module as shown Installation Pre Selector wheel Selector switch Plug in repl...

Page 5: ...back of the body Press the module down until it locates solidly 6 Cut a cable aperture in the Wiring Cover if necessary replace the Wiring Cover and tighten the fixing screw 7 Switch on Mains test for...

Page 6: ...om stat Low voltage supply return 3 Typical gas or oil fired heating system with gravity hot water primary and pumped heating 4 Typical control of heating when used with combination type boilers 2 Con...

Page 7: ...t Some types have to be adjusted in spring and autumn at the changes between Greenwich Mean Time and British Summer Time You may be able to temporarily adjust the heating programme for example Overrid...

Page 8: ...he 103 provides 2 ON periods and 2 OFF periods each day However 1 ON and 1 OFF period can be obtained by using the Pre Selector Wheel see page 12 Youcanchoosewhetherthe103controlsyourhotwater heating...

Page 9: ...ember you will have to re set the time after a power cut and also when the clocks change in Spring and Autumn Setting the programme Tappets A B C D 1 If not already done so remove the dial cover turn...

Page 10: ...nsure that the installer has removed the protective tape covering the pre selector wheel 4 Using the dial knob rotate the dial completely at least twice clockwise only to clear the mechanism Note Tapp...

Page 11: ...anually select either hot water heating follow set programmed hot water heating constantly ON hot water heating constantly OFF Switch positions The 103 unit is now set and the current status of the ti...

Page 12: ...t displays ON UNTIL D as shown Thus the system is turned ON manually at 2pm but will revert to the set programme at the next operation i e OFF at 11pm Some other useful pre selections are ALL DAY ON 1...

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Page 16: ...relating to your heating controls Visit our website www heating danfoss co uk Email our technical department ukheating technical danfoss com Call our technical department 01234 320 256 9 00 5 00 Mon...