Danfoss 4033 Guide

4033
Installation & User Instructions
electro-mechanical
programmer for controlling
heating & hot water
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2
INDEX
Index
Installation
Product specification 3
Installation 4-5
Wiring 6-7
User
Your programmer 8
Programming the unit 8-9
Setting the clock 9
Using the programmer 10-11
Contact details 12

3
Please Note:
This product should only be installed by a qualified
electrician or competent heating installer, and
should be in accordance with the current edition of
the IEEE wiring regulations.
Specification
Power supply 230 ± 15% Vac, 50/60Hz
Switch action 2 x SPDT, type 1B
Switch rating
Max 264 Vac, 50/60Hz, 3(1) A
Timing accuracy ± 1 min/month
Enclosure rating IP30
Max. ambient temperature 55°C
Dimensions, mm (W, H, D) 102 x 210 x 60
Design standard EN 60730-2-7
Construction Class 1
Control Pollution Situation Degree 2
Rated Impulse Voltage 2.5kV
Ball Pressure Test 75°C
Product specification
Installation Instructions
Specification

4
Installation
Installation
1. Unscrew fixing rings from selector switches, move all
four tappets to top of dial and remove outer case.
2. Slacken two screws securing plug-in module to
backplate and separate module from backplate by
pulling upwards.
3. Fix backplate to wall (3 hole fixing).
4. Wire mains, motorised valve(s), thermostat(s)
according to instructions shown on page 6-7.
5. Secure cables under clamp bar.
6. Ensure all dust and debris has been cleared away
from the area then plug in programmer module and
re-tighten the 2 retaining screws - do not overtighten.
7. Switch on mains, turn both selector switches to
‘ON’ and light up boiler according to manufacturer’s
instructions.
8. With both room and cylinder thermostats turned up to
maximum, check the switching action of the 4033 with
a neon screwdriver or test lamp.
NOTE: This is a Class 1 product and must be earthed.
WATER SWITCH
(a) With selector switch in ON position, terminal 4
should be LIVE.
(b) With selector switch in OFF position, terminal 5
should be LIVE.
(c) With selector switch in TIMED position, terminal
4 should be LIVE between tappets A-B and C-D
and terminal 5 should be LIVE between tappets
B-C and D-A.

5
HEATING SWITCH
(d) With selector switch in ON position, terminal 2
should be LIVE.
(e) With selector switch in OFF position, terminal 3
should be LIVE.
(f) With selector switch in TIMED position, terminal
2 should be LIVE between tappets A-B and C-D
and terminal 3 should be LIVE between tappets
B-C and D-A.
9. Remove cut-out from bottom of outer case as
required. Refit outer case and selector switch fixing
rings. Check that outer case sits squarely on body and
is not distorted by an uneven wall surface.
10. Rotate dial clockwise through at least one complete
revolution and check that all four tappets are clear of
outer case aperture.
11. Ease of installation can be achieved by the use of the
Danfoss Randall Wiring Centre which is obtainable
from most Builders Merchants and Distributors.
NOTE: If a Wiring Centre is used follow the
installation instructions included with that
unit and not the wiring diagrams overleaf.
!
Installation

6
Wiring
Wiring
4033 (3023 12/01)
1 2345678910
S/L LN
Brown
Orange
Grey
Blue
Danfoss Randall
HP22 or HP28
Brown
Orange
Grey
Blue
Danfoss Randall
HP22 or HP28
Flying lead Flying
lead
2
4
1
(N)
1234567
Danfoss Randall
ATC Cylinder Stat
23
1
3 core
2 core3 core
Danfoss
Randall
RMT230
Room Stat
4033
Terminals
Mains
Supply
N
L
2 core +
3 or 4 core
NN
LL
Boiler Pump
Permanent line
supply for boiler
if required
WB12 Wiring Box
WIRING - 2 X 2 PORT VALVES
4033 PROGRAMMER WIRING

7
Wiring
Wiring
12345674033
Terminals
Mains
Supply
N
L
NN
LL
Boiler Pump
Junction Box
Blue
Grey
Orange
Brown/White
LN
24
1
Danfoss
RMT
Room Stat
13
2
Danfoss
Randall ATC
Cylinder Thermostat
Danfoss
Randall
HS3 mid
position
valve
WIRING - 1 X MID-POSITION VALVE

8
User Instructions
Your programmer
The 4033 programmer allows you to switch your hot water
and heating on and off at times that suit you.
Four tappets on the timing dial let you decide when you
want your hot water and heating to come on and go off
each day. The programmer provides 2 ON times and 2
OFF times per day.
Using two simple switches you can run your Heating and
Hot Water independently of each other, either at the set
times, constantly ON, constantly OFF.
Your Programmer & Programming the unit
Programming the unit
There are four TAPPETS on your timing dial, two red and
two blue:
 the red tappets are the ON switches
 the blue tappets are the OFF switches
1. Hold the central black &
silver knob with one hand
and move the red tappet
marked ‘A’ clockwise to
the time you want your
HEATING/HOT WATER to
switch on in the morning.
NB. you may find the tappets quite stiff, so you may
have to push them quite firmly to move them.

9
Setting the clock
2 Still holding the central knob, move the blue tappet
marked ‘B’ to the time you want your HEATING/HOT
WATER to switch off in the morning.
3 You can set your other two tappets in the same way
to set your HEATING/HOT WATER for the afternoon
or evening.
EXAMPLE
(NB. Clock is in 24 hour mode)
If you want your heating and hot water ON between
7am and 10am and ON again between 5pm and
11pm, set tappets as follows:
A at 1st ON time = 7
B at 1st OFF time = 10
C at 2nd ON time = 17
D at 2nd OFF time = 23
Setting the Clock
Turn the dial clockwise
until the correct time
is lined up with the dot
labelled TIME
NB. clock is in 24 hour
mode
REMEMBER
You will have to reset the time after a power
cut and also when the clocks change in
Spring and Autumn
!

10
Using the Programmer
The 2 switches are used to select how the 4033 controls your
hot water and heating. The heating and hot water can be
operated independently, in various combinations.
Each of the selector switches can be put into one of three
positions marked ‘TIMED’, ‘OFF’ and ‘ON’. They operate
completely independently of one another, letting you select
different programmes for each service.
HEATING switch
 TIMED - the Heating will be switched ON and OFF
according to the times at which the tappets have been
set.
 OFF - the Heating will ignore the tappet positions and
remain OFF (this enables the heating to be switched off
during the Summer).
 ON - the Heating will be ON constantly. This enables
you to switch the Heating ON during a period when the
time clock is off.
Using the programmer
ON
OFF
TIMED
ON
TIMED
OFF
HEATING WATER