Quantech QTC3040T User Manual

Quantech
163
Section 7: Unit controls
Form QTC3-NM1
Issue date: 12/19/2023
7
Option 19: Pump selection
The displays for this PUMP SELECTION option
should only appear if “QUANTECH HYDRO KIT
PUMPS = 2” are selected under Option 19.
Option 20: Hot gas bypass type
Hot gas bypass type cannot be programmed under the
options key. This option will display the hot gas by-
pass type as programmed in Service Mode for R-410A
units. Reference unloading logic flow chart for hot gas
bypass valve operation local/remote is set to local
H O T G A S B Y P A S S T Y P E
N O N E
When programmed for hot gas bypass type None, the
unit will pump down and shutdown the lead system.
H O T G A S B Y P A S S T Y P E
S Y S T E M 1
When programmed for hot gas bypass type System 1,
the unit will operate system 1 hot gas bypass if system
1 is the lead system.
H O T G A S B Y P A S S T Y P E
S Y S T E M 2
When programmed for hot gas bypass type System 2,
the unit will operate system 2 hot gas bypass if system
2 is the lead system.
H O T G A S B Y P A S S T Y P E
B O T H S Y S T E M S
When programmed for hot gas bypass type Both Sys-
tems, the condensing units operating in suction pres-
sure control operate independent of the lead/lag sys-
tem. All other units will use the hot gas bypass valve of
the lead system when unloading.
Option 21: Flash card data logging
When the following message appears, data logging is
disabled.
D A T A L O G T O F L A S H C A R D
O F F
When the following message appears, data logging is
enabled.
D A T A L O G T O F L A S H C A R D
O N
When the following message appears, data logging is
enabled and is not logging unchanged data.
D A T A L O G T O F L A S H C A R D
S K I P U N C H A N G E D
Option 22: Temperature sensors enable
This option will display for QTC3 R-410A units.
Note: When R-22 is programmed, the optional dis-
charge temperature sensors will not be affected by this
modification.
D S C H T E M P S E N S O R S
E N A B L E D
When the following option is selected, the discharge
temperature sensors are enabled for non-QWC3 units
and disabled on QWC3, leaving liquid and return liq-
uid hot temperature sensors.
Y C W L T E M P S E N S O R S
E N A B L E D
When the following option is selected, the discharge
temperature sensors are disabled.
D S C H T E M P S E N S O R S
D I S A B L E D

Quantech QTC3040T Specifications

General

Brand	Quantech
Model	QTC3040T
Category	Chiller
Language	English