7
Typical fully pumped system
with 3-port mid-position valve
W
iring
Replacement
Please see overleaf for a table containing replacement
wiring information.
Some controls are connected in different ways depending
upon the type of system and/or the controls which are
fi
tted. If there is any doubt about the way in which the
existing unit is connected, please contact our Technical
Services Department before proceeding with
replacement.
If the unit is to be used in association with a 6
wire Honeywell Y Plan, a special wiring diagram
may be required. Contact the Danfoss Randall
Technical Services Department for details.
Note: The SET2E is a direct replacement for a Danfoss
Randall SET2.
!
N
L
1
2
3
4
5
6
3 amp fuse
D.H.W.
HTG
ON
OFF
Mains
Supply N
L
Programmer
Terminals
L
N
N
N
Boiler &
Pump
3-port
mid-pos
valve
Room
Stat
Cyl.
Stat
ON
OFF
