Control Operation Sequences; Sequence - TB Controls TC02 Operation & Maintenance Manual

Trip for overheat sensor
Room stat where present
Occupancy sensor where present / if not insert loop!
LCD Plate if used
Communications cable LON
Communications cable Loop
Mains transformer
DIP switch 4 ON for water heating actuator control OFF for electric heating
DIP switch 8 OFF, 9 and 10 ON for a Master unit
DIP switch 8 ON, 9 and 10 OFF for a slave unit
Setting the unit up with the network address and the Slave address is covered in the
following sections
5.

Control Operation sequences

The unit may be fitted with up to three sensors combinations of which will result in varied
operation sequences.

5.1.8. Sequence 1

Off coil sensor only fitted will result in the temperature of the air leaving the supply grill
being controlled to the given set point for Summer or Winter modes
5.1.9. Sequence 2
Off coil and Return Air sensors only fitted will result in the temperature of the air leaving
the supply grill being controlled to the given set point for Summer or Winter modes,
however when the return air temperature reaches the appropriate setpoint trip the Off coil
temperature setpoint will be adjusted according to the setback parameter.
5.1.10. Sequence 3
Off coil, Return Air and Outside Air sensors fitted will result in the temperature of the air
leaving the supply grill being controlled to the given set point, automatically controlled
between the Summer and Winter setpoints, (see 5.1.12,13) however when the return air
temperature reaches the appropriate setpoint trip the Off coil temperature setpoint will be
adjusted according to the setback parameter. The return air trip setpoint is varied between
the Summer and Winter setpoints as shown in 5.1.12,13
5.1.11. Sequence 4
Off coil, Return Air and Outside Air sensors fitted will result in the temperature of the air
leaving the supply grill being controlled to the given set point, automatically controlled
between the Summer and Winter setpoints.
Doc: TC02 O&M
Final
Status: issue: 11
Operations & Maintenance Manual
Page 13 of 20
©TB Controls 2011