Valve Confi Guration; Multi-Unit Confi Guration - ClimateMaster ATC32U01 iGate Installation Manual

AT C 3 2 U 0 1 C o m m u n i c a t i n g , P r o g r a m m a b l e T h e r m o s t a t - I O M
VARIABLE SPD INTERNAL
PUMP CONFIGURATION
PUMP CONTROL
HEATING STAGE 1
COOLING STAGE 2
COOLING STAGE 1
COOLING STAGE 2
PREVIOUS
3.5 VALVE CONFIGURATION
Confi gure temperature differentials at the thermostat for
vFlow™ units with a motorized modulating valve.
Adjust the Valve Confi guration settings using the up/down
arrow buttons. Press the center button to select each item.
• Heating Delta T (default stored in control) –
valid range: 4 to 12ºF (in 1ºF increments)
• Cooling Delta T (default stored in control) –
valid range: 9 to 20ºF (in 1ºF increments)
NOTE 1: Minimum and Maximum degree values are shown
only when the control is confi gured with the appropriate values.
NOTE 2: Refer to section 3.6.3 for multi-unit confi guration
instructions.
MODULATING VALVE
CONFIGURATION
HEATING DELTA T
COOLING DELTA T
PREVIOUS
FIXED
60%
75%
50%
70%
OFF POSITION
SELECT
PREVIOUS
3.6
If multiple units are connected to one ATC thermostat upon
unit start-up, the thermostat will automatically register the
serial numbers of all units connected to it.
NOTE: Multiple units may be connected directly to the ATC
thermostat or connected to one another in series, as shown by
the fi gure below.
DEG
8
15
NEXT
Two
connections
on DXM2
board to allow
for multi-unit
installation
3.5.1 MODULATING VALVE OFF POSITION
Click Next from section 3.5 to select the off position
value for the modulating valve.
NOTE: For certain commercial multi-unit
applications, the modulating valve can be kept
slightly open by choosing values 3.3-4.0.
MODULATING VALVE
CONFIGURATION
MULTI-UNIT CONFIGURATION
Or
R e v. : 4 F e b . , 2 0 1 3
3.8
SELECT
9