Trane IntelliPak 2 Series, Инструкция по установке, эксплуатации и обслуживанию

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16 RT-SVX24Q-EN
ambient compressor lockout, the compressors are not
allowed to operate if the temperature of the outside air
falls below the lockout setpoint. When the temperature
rises 5°F above the lockout setpoint, the compressors
are allowed to operate. The factory preset is 50°F.
These compressors come equipped with a protection
module that monitors phase loss, phase sequencing
and motor temperature.
Space Pressure Transducer
An analog input device used on CV and VAV
applications with the Statitrac option. This analog input
deviceIt modulates the exhaust dampers to keep the
space pressure within the building to a customer-
designated controlband. It is mounted on the bottom
support below the return damper blade assembly and
is connected to the ECEM. Field-supplied pneumatic
tubing must be connected between the space being
controlled and the transducer assembly. See
Figure 7,
p. 16 .
Morning Warm-Up—Zone Heat
When a system changes from an unoccupied to an
occupied mode, or switches from STOPPED to AUTO,
or power is applied to a unit with the MWU option, the
heater in the unit or external heat will be brought on if
the space temperature is below the MWU setpoint. The
heat will remain on until the temperature reaches the
MWU setpoint.
If the unit is VAV, then the VAV box/unocc relay will
continue to stay in the unoccupied position and the
VFD output will stay at 100% during the MWU mode.
When the MWU setpoint is reached and the heat mode
is terminated, then the VAV box/unocc relay will switch
to the occupied mode and the VFD output will be
controlled by the duct static pressure. During Full
Capacity MWU the economizer damper is held closed
for as long as it takes to reach setpoint. During Cycling
Capacity MWU the economizer damper is allowed to
go to minimum position after one hour of operation if
setpoint has not been reached.
Compressor Motor Winding Thermostats
A thermostat is embedded in the motor windings of
each Scroll compressor. Each thermostat is designed to
open if the motor windings exceed approximately 221°
F. The thermostat will reset automatically when the
winding temperature decreases to approximately 181°
F. Rapid cycling, loss of charge, abnormally high
suction temperatures, or the compressor running
backwards could cause the thermostat to open. During
a request for compressor operation, if the Compressor
Module detects a problem outside of normal
parameters, it turns any operating compressor(s) on
that circuit “Off”, locks out all compressor operation
for that circuit, and initiates a manual reset diagnostic
(compressor trip). These compressors come equipped
with a protection module that monitors phase loss,
phase sequencing and motor temperature.
VZH Variable Speed Compressors
Over current and over torque protection for VZH
compressors are provided by the TRV200 inverter. VZH
over temperature protection is not required.
Figure 7. Transducer voltage output vs. pressure input for supply, return and building pressure
-0.75 to 9.0 Iwc Pressure Transducer Voltage Output vs. Pressure Input
0.00
0.50
1.00
1.50
2.00
2.50
3.00
3.50
4.00
4.50
-0.
75
-0.
25
0.
25
0.
75
1.
25
1.
75
2.
25
2.
75
3.
25
3.
75
4.
25
4.
75
5.
25
5.
75
6.
25
6.
75
7.
25
7.
75
8.
25
8.
75
Pressure (inches w.c.)
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