IDEAL Logic+ Combi 24 Installation And Servicing page 32

27 INTERNAL WIRING CONT'D
DIAGRAM A
Internal Timer or
Programmable Room Stat
ROOM
STAT/
TIMER
L
N
FROST
STAT
( )
OPTIONAL
DIAGRAM B
External
Timer
ROOM
STAT/
TIMER
L
N
FROST
STAT
( )
OPTIONAL
DIAGRAM C
Weather Compensation Kit
ROOM
STAT/
TIMER
L
N
FROST
STAT
( )
OPTIONAL
OpenTherm
Harness
Weather
Compensation
32
inStAllAtion
N
Room
Stat or (1) ROOM THERMOSTAT WITH INTERNAL BOILER TIMER OR (2)
Prog.
Room
PRoGRAMMAble RooM tHeRMoStAt
Stat
1. Remove link wire between room stat/timer terminals.
2. Connect room stat across terminals as shown in diagram A
3. If room stat has a neutral connection, connect this to terminal N (load) in the
Optional
Frost Stat
fused spur.
RooM tHeRMoStAt + tiMeR
N
Room
1. Remove link wire between room stat/timer terminals.
Stat
2. Connect room stat and programmer in series as shown in diagram B.
3. If room stat has a neutral connection, connect this to terminal N (load) in the
fused spur.
fRoSt tHeRMoStAt
Optional
Frost Stat
If parts of the system are vulnerable to freezing or the programmer is likely to be
left off during cold weather, a frost stat should be fitted in conjunction with a pipe
thermostat.
1. Position the frost thermostat in a suitable position, i.e. area vulnerable to
freezing.
2. Connect frost stat across terminals marked frost stat shown in diagrams A & B.
WeAtHeR CoMPenSAtion Kit
The two wires from the weather compensation kit (outside sensor), must be
Timer
connected into the two right hand terminals as shown in diagram C.
Optional
Frost Stat
Outside
Sensor
+
Ideal Logic Combi -
Installation and Servicing