Quantech QTC3040T User Manual

Quantech
155
Section 7: Unit controls
Form QTC3-NM1
Issue date: 12/19/2023
7
Figure 45: Setpoints Quick Reference List
LD07404c
Program value Mode Low limit High limit Default
VSD fan low ambient discharge
pressure setpoint
—
360 psig 420 psig 390 psig
24.82 barg 28.96 barg 26.89 barg
VSD fan low ambient discharge
pressure control range
—
60 psig 120 psig 90 psig
4.14 barg 8.27 barg 6.21 barg
Cooling suction superheat setpoint —
5.0°F
(di󰀨erential)
18.0°F
(di󰀨erential)
10.0°F
(di󰀨erential)
* The minimum discharge pressure allowed is 235 psig. The high limit for fan di󰀨erential o󰀨 pressure is reduced to prevent going below 235
psig based on where the fan control on pressure is programmed.
Table 18: Program key lmiits and details, continued

Quantech QTC3040T Specifications

General

Brand	Quantech
Model	QTC3040T
Category	Chiller
Language	English