TEMPRA 24
26
Tempra 24 “Y” Plan
Pipework layout
FERROLI
TEMPRA
APPLIANCE
Auto air vent
To ensure a passage of 6ltrs
per minute an Automatic
by-pass must be fitted.
(Building regulation Document L
April 2001)
“Y” Plan valve
Wiring diagram
1 2 3 4 5 6 7 8 9 10
PROGRAMMER
NEUTRAL
LIVE
CH ON
DHW ON
DHW OFF
BLUE
WHITE
GREY
ORANGE
Room Thermostat
Cylinder Thermostat
N
E
L
240 Vac
fused at 3 amps
Honeywell V4073H mid position
The heating system must have a automatic by-pass capable of
6 Ltrs/min as per Building regulations part “L”.
3 WAY ZONE VALVE
2
1
C
1
2
3
4
5
6
7
8
Tempra 24 Junction Box
Resistor
DO NOT REMOVE
Switched live to appliance
IMPORTANT
It is necessary to provide 230v A/C switched supply
from external controls (ie motorised valve or room stat)
The supply must be connected to terminal 2 on appliance
connector block.
Fig. 25c
Fig. 25d
