Installation – System Parameters
SX FUNCTION SYSTEM SETTING DEFINITION DEFAULT
SO1 System Unit 0 Programmable Stat (PRT)
Type 1 Digital Thermostat 0
2 HW Timer
S03 System 0** PRT only with communication*
Communication 1* Group control thermostat and
group thermostat communication 1
2 No Communication /
Grouping required
You are now ready to congure the unit
using the system parameter table below.
*S03 setting 1 is used for Control Group options 2 & 3 see pages 33-36, communication
connection must be used, global heat/cool changeover is also included if applicable to your system.
**S03 setting 0 is used for option 1 (see page 31) when heat/cool changeover is required for individual
PRT’s, communication connections must be used for this function. S03 setting 0 is only available if setting
0 has been selected for S01. If no heat/cool changeover is required when using PRT’s only then select
setting 2 for S03
28 VS10W and VS10B Installer Manual