gledhill TORRENT DIRECT Design, Installation & Servicing Instructions page 30

HEATING SYSTEM DESIGN
Consumer unit
Hot
Water
B16
ON
ON ON
OFF OFF
OFF
MCB MCB
24 hour domestic supply
[Off-peak during 00:00 – 07:00 E7]
Figure 4.1 Typical wiring for Twin tariff un-restricted off-peak connection
Maximum
height = 6m
Flow
Boiler
Figure 4.2 Torrent Indirect OV: Typical open vented heating system using 'Y' plan control arrangement
ON ON ON
OFF OFF OFF
MCB MCB MCB
2 Pole
Isolator
switch
Figure 4.1 Typical wiring for twin tariff unrestricted off-peak connection
Feed and vent pipes
must be fitted
by the installer
Torrent Direct
4
3
1
Return
1 : Automatic bypass valve
2 : 3-Port Flow-share valve
3 : System pump
4 : Store thermostat
Off-peak controller
250mm minimum
2
Page 30
Top On-Peak 3kW
Immersion heater
Bottom Off-Peak 3kW
Immersion heater