Trane IntelliPak SCRF 25, Инструкция по установке, эксплуатации и обслуживанию

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SCXF-SVX01Q-EN 73
Summit or a third party building automation system
that supports LonTalk.
The BCI-I (BACnet) utilizes the BACnet defined MS/TP
protocol as defined in ASHRAE standard 135-2004. This
controller works in standalone mode, with Tracer SC
®
or when connected to a third party building automation
system that supports BACnet.
Exhaust/Comparative Enthalpy Module
(ECEM - Optional used on units with Statitrac and/or
comparative enthalpy options)
The Exhaust/Comparative Enthalpy module receives
information from the return air humidity sensor, the
outside air humidity sensor, and the return air
temperature sensor to utilize the lowest possible
humidity level when considering economizer
operation. In addition, it receives space pressure
information which is used to maintain the space
pressure to within the setpoint control band. Refer to
Figure 36, p. 73 for humidity vs. voltage values.
Figure 36. Relative humidity vs. voltage
Figure 37. Velocity pressure transducer/solenoid
assembly
Tube from low side
of Transducer
Pressure
Transducer
Ventilation
Control Module
Solenoid
Tube from high side
of Transducer
Tube from low side
of Velocity Ring
Ventilation Control Module (VCM)
((A Av va aiilla ab blle e o on nlly y w wiitth h T Trra aq q™ ™ d da am mp pe err o op pttiio on n))
The ventilation control module (VCM) is located in the
airside economizer section of the unit and linked to the
unit’s UCM network. Using a velocity pressure
transducer/solenoid (pressure sensing ring) in the fresh
air section allows the VCM to monitor and control fresh
air entering the unit to a minimum airflow setpoint. See
Figure 36, p. 73 for a detail view of the velocity
pressure transducer/solenoid assembly.
An optional temperature sensor can be connected to
the VCM to enable control of a field installed fresh air
preheater.
Also, a field-provided CO
2
sensor can be connected to
the VCM to control CO
2
reset. The reset function
adjusts the minimum cfm upward as the CO
2
concentrations increase. The maximum effective (reset)
setpoint value for fresh air entering the unit is limited
to the system’s operating cfm.
Table 42, p. 73 lists the
minimum outside air cfm vs input voltage.
Table 42. Minimum outside air setpoint w/VCM
module and Traq™ sensing
Unit
Input Volts
CFM
SXWF 20 0.5 - 4.5 vdc 6,325-8,500
SXWF 22 0.5 - 4.5 vdc
6,325-9,350
SXWF 25 0.5 - 4.5 vdc
6,500-10,625
SXWF 29 0.5 - 4.5 vdc
8,700-12,325
SXWF 32 0.5 - 4.5 vdc
8,700-13,600
SXWF 35 0.5 - 4.5 vdc
9,100-14,875
SXWF 38 0.5 - 4.5 vdc
9,880-16,150
SXWF 42 0.5 - 4.5 vdc
11,200-17,859
SXWF 46 0.5 - 4.5 vdc
11,960-19,550
SXWF 52 0.5 - 4.5 vdc
14,250-22,100
SXWF 58 0.5 - 4.5 vdc
15,080-24,650
SXWF 65 0.5 - 4.5 vdc
16,900-27,625
SXWF 72 0.5 - 4.5 vdc
18,700-29,800
SXWF 80 0.5 - 4.5 vdc 20,800-29,800
SXRF 25 0.5 - 4.5 vdc
8,700-12,325
SXRF 29 0.5 - 4.5 vdc
8,700-13,600
SXRF 30 0.5 - 4.5 vdc
9,100-14,875
SXRF 35 0.5 - 4.5 vdc
9,880-16,150
SXRF 40 0.5 - 4.5 vdc 11,960-19,550
SXRF 50 0.5 - 4.5 vdc
15,080-24,650
SXRF 60 0.5 - 4.5 vdc
20,800-29,800
Generic Building Automation System
Module Option
Generic building automation system module (GBAS)
provides broad control capabilities for building
automation systems other than Trane’s Tracer
®
system. A field provided potentiometer or a 0-5 Vdc
signal can be applied to any inputs of GBAS to provide
following points:
C Co on nttrro ollss