Danfoss 3022 Installation Instructions

3022 Electro-Mechanical Timeswitch
(For 3-Port Priority Diverter Valves)
INSTALLATION INSTRUCTIONS
SPECIFICATION
Power Supply : 220/240 Vac, 50 Hz
Switch Action : 2 x SPST, type 1B
Switch Rating : 220/240 Vac, 50 Hz, 3(1)A
Timing Accuracy : +/- 1 min/month
Enclosure Rating : IP30
Max. Ambient Temperature : 55°C
Designed to meet BS EN60730-2-7
Overall Dimensions : 102mm wide, 210mm high, 60mm deep
Construction : Class 1
Control Pollution Situation : Degree 2
Rated Impulse Voltage : 2.5Kv
Ball Pressure Test : 75°C
The unit must be installed by a competent electrician and the installation should conform to IEE Wiring Regulations. The supply to this unit should be
wired through full disconnect in accordance with BS EN60730-1, i.e. one which provides an air gap of at least 3mm in both poles of the mains, e.g. a 13
amp plug and unswitched socket, or a switched, fused outlet with neon; either tted with a 3 amp (max.) fuse.
INSTALLATION AND WIRING INSTRUCTIONS
1. Unscrew xings rings from selector switches, move all four tappets to
top of dial, 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 xing).
4. Referring to wiring diagrams opposite make electrical connections as
shown (as applicable).
5. Secure cables under cable clamp.
6. Plug in programmer module and re-tighten the two retaining screws
- do not overtighten.
7. Remove cut-out from outer case as required, replace outer case and
xing rings. Check that outer case sits squarely on body and is not
distorted by uneven wall surface.
8. Select left hand switch to 'ON' and light up boiler according to
manufacturers instructions.
9. Rotate dial clockwise through at least one complete revolution and
check that all four tappets are clear of outer case aperture.
10. Operating checks:- Select left hand switch to 'TIMED' . Rotate dial by
hand to observe that both boiler and pump operate together during
'ON' periods. Select left hand switch to 'ON' . Select right hand switch
to 'HEATING PRIORITY'; under this condition the room thermostat
should take preference over the cylinder thermostat (i.e. hot water will
not be available until the room thermostat is satis ed: in other words
when the room thermostat is calling for heat the DIVERTER VALVE
will be energised irrespective of the state of the cylinder thermostat).
Now select 'HOT WATER PRIORITY' . Under this condition the cylinder
thermostat takes preference over the room thermostat and heating will
only be available when the cylinder thermostat is satis ed (i.e. when
the cylinder thermostat is calling for heat the DIVERTER VALVE will
remain unenergised irrespective of the state of the room thermostat).
When both cylinder and room thermostats are satis ed check that the
boiler, and pump are electrically 'dead' and the diverter valve is sprung
open to the cylinder.
EXTERNAL WIRING TO DANFOSS RANDALL HEATPLAN
CONTROLS PACK
SELECTOR
SWITCH
PRIORITY
SWITCH
HW
HTG
1 2 3 4
1
2
(N)
4
Danfoss Randall
RMT230 Room Stat
L L
Boiler Pump
N N
ON
OFF
Time
TIMED Switch
5 6 7 3022
Terminals
Mains
N
Supply
L
Danfoss
2 3
Randall ATC
Cylinder Stat
1
L
Diverter
Valve
N
1