Orion System System Manager TS II In-House - Manual (Page 33)

SMTS II Technical Guide
VCM & VCM-X Controllers
33
VCM & VCM-X Temperature Setpoints
Cooling SAT/Low Reset Limit
For VCM-X, if no reset is confi gured, this is the Supply Air Temperature
maintained during the Cooling Mode of operation. If reset is confi gured,
this is the lowest temperature the Supply Air can be reset to. For VCM,
this is the Target Reset Source Temperature if reset is confi gured. High
limit = 80ºF; Low limit = 40ºF; Default = 55ºF.
Cooling SAT/High Reset Limit
For VCM-X, if your system requires reset of the Supply Air Temperature
in the Cooling Mode, this is the highest temperature the Supply Air can be
reset to. For VCM, this fi eld will display Reserved. High limit = 150ºF;
Low limit = 40ºF; Default = 55ºF.
Cool Staging Window
This is the level below the Supply Air Setpoint that causes the Compres-
sors to Stage Off. High limit = 20ºF; Low limit = 1ºF; Default = 5ºF.
Cooling OAT Lockout
If the Outdoor Air Temperature is below this value, the mechanical cool-
ing is prevented from activating. High limit = 100ºF; Low limit = 0ºF;
Default = 50ºF.
Low Temperature Cutoff
If the Supply Air Temperature drops below this value, all cooling is im-
mediately cut off to protect the equipment. High limit = 250ºF; Low limit
= 0ºF; Default = 40ºF.
Heating SAT/Low Reset Limit
For VCM-X, if no reset is confi gured, this is the Supply Air Temperature
maintained during the Heating Mode of operation. If reset is confi gured,
this is the lowest temperature the Supply Air can be reset to. For VCM,
this is the Target Reset Source Temperature if reset is confi gured. High
limit = 200ºF; Low limit = 40ºF; Default = 120ºF.
Heating SAT/High Reset Limit
For VCM-X, if your system requires reset of the Supply Air Temperature
in the Heating Mode, this is the highest temperature the Supply Air can be
reset to. For VCM, this fi eld will display Reserved. High limit = 200ºF;
Low limit = 40ºF; Default = 120ºF.
Heat Staging Window
This is the level above the Supply Air Setpoint that causes the Heating to
Stage Off. High limit = 20ºF; Low limit = 1ºF; Default = 5ºF.
Heating OAT Lockout
If the Outdoor Air Temperature is above this value, the mechanical heat-
ing is prevented from activating. High limit = 150ºF; Low limit = 50ºF;
Default = 70ºF.
High Temperature Cutoff
If the Supply Air Temperature rises above this value, all heating is im-
mediately cut off to protect the equipment. High limit = 250ºF; Low limit
= 0ºF; Default = 170ºF.
Figure 51: VCM-X Temperature Setpoints Screen 3 Figure 52: VCM-X Temperature Setpoints Screen 4