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RT-SVD03L-EN
Table 104.
VAV default mode input
No Inputs on RTRM
J6
Jumper RTRM J6-
2&4
BAYSENS077* w/
RTRM J6-2&4
Jumper
BAYSENS021* or
BAYSENS077* w/
7.68k resistor
between RTRM J6-
2&4
BAYSENS020* or
ICS™ system
(Tracer® Summit)
Occupied Cooling
No
Yes
Yes
Yes
Yes
Daytime Warm-up
No
No
Yes
Yes
Yes
Morning Warm-up
No
No
Yes
Yes
Yes
Indoor Blower (occupied
mode)
Off
On
On
On
On
Indoor Blower (unoccupied
mode)
N/A
Off
Auto
Auto
Auto
Unoccupied Cooling
N/A
No
No
No
Yes
Unoccupied Heating
N/A
No
Yes
Yes
Yes
Short Across RTRM J6-
11&12 creates an
unoccupied mode (Night
setback)
No
No
Yes
Yes
N/A
Note:
* Means 'B' or 'C'
Supply Duct Static Pressure Control
The supply duct static pressure is measured by using a
0 to 5VDC transducer. The transducer is mounted on
the supply fan bulkhead on the motor side of the
supply fan section. The transducer is comparing the
supply duct pressure (actually the pressure of the heat
section of the unit) to outdoor air pressure. The high
port of the transducer is connected to the static
pressure sensing cover plate located on the supply fan
bulkhead. The low port of the transducer is connected
to a tubing connector on a vertical support of the unit
and is field-connected to the outside air pressure
sensor as pictured below. The transducer is wired to
the RTAM and the decision to modulate the IGV or VFD
is made at the RTRM.
Modes of Operation
Setpoints are provided by using the potentiometers on
the RTAM, through remote potentiometers, or through
ICS. The setpoint range is 0.3" WC to 2.5" WC. The
deadband range is 0.2" WC to 1.0" WC.
The control band is the setpoint plus or minus .5 of the
deadband.
For example:
Setpoint 1.5"
Deadband 0.4"
The IGV or VFD output will increase if the supply
pressure goes below 1.3".
The IGV or VFD output will decrease if the supply
pressure goes above 1.7"
The IGV or VFD output will not change if the supply
pressure stays between 1.3" and 1.7".
DIP switch settings for this function are as follows:
RTAM SW1 switch 1 OFF for IGV, ON for VFD.
RTAM SW1 switch 2 OFF for VAV, ON for "VAV without
IGV".
Figure 103.
Supply duct static pressure control
Outside Air
Pressure Sensor
Static Pressure
Sensing Coverplate
Duct Static Transducer
Tubing Connector
(Through Vertical
Support)
Low
High
Supply Fan
Bulkhead
0.07” Hole
In Bulkhead
Gasket
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