System Pre-Start Procedures

Figure 37. Discharge Duct Sensor 6RT2 & 6RT3 “Temperature vs Resistance” Curve

(Ohms)

4200

 

 

 

 

 

 

 

 

 

 

4000

 

 

 

 

 

 

 

 

 

 

3800

 

 

 

 

 

 

 

 

 

 

Resistance

 

 

 

 

 

 

 

 

 

 

3600

 

 

 

 

 

 

 

 

 

 

3400

 

 

 

3483 ± 10 Ohms @

 

 

 

 

 

3200

 

 

 

 

 

 

 

 

 

 

 

77O F (25O C)

 

 

 

 

 

3000

 

 

 

 

 

 

 

 

 

 

20

40

60

80

100

120

140

160

180

200

220

 

 

(-6.7oC)

(4.4oC)

(15.6oC)

(26.7oC)

(37.8oC) (48.9oC) (60.0oC)

(71.1oC) (82.2oC) (93.3oC)

(104.4oC)

 

 

 

 

 

Temperature - OF (OC)

 

 

 

 

EVP Chiller Control Checkout (Honeywell W7100G)

Note: The following checkout procedure must be performed in its entirety and in the sequence given.

WARNING

Hazardous Voltage!

Disconnect all electric power, including remote disconnects before servicing. Follow proper lockout/tagout procedures to ensure the power can not be inadvertently energized. Failure to disconnect power before servicing could result in death or serious injury.

The W7100G (6U11) chilled water controller can be checked out using a highly accurate digital volt- ohmmeter, the W7100 accessory tool kit (Trane part # TOL-0101 or Honeywell part # 4074EDJ), and the Honeywell 4074EFV resistor bag assembly.

1.Verify that the main power disconnect switch and the control circuit switch 1S2, in the unit control panel, is “OFF”.

2.At the unit control panel, unplug the reset relay 1K11 and 1K12, (1K12 used on 40 through 60 Ton units only). Refer to the connection diagram that shipped with the unit for the location of the relay(s).

3.At the Chilled Water controller (6U11) inside the remote panel, disconnect the sensor (6RT2) leads form Terminals T & T1.

4.Remove the 3,400 ohm resistor (blue leads) from the test kit and connect it across Terminals T and T1 to simulate a discharge air temperature of 60ºF.

5.Remove the factory-installed jumper (wire 209A) from the “fast response” Terminals 9 & 10.

6.To simulate a call for maximum reset, remove the jumper from Terminals 6 & 7 and install the 1780 ohm resistor (red leads), from the test kit, across Terminals 6 and 7.

7.Install a jumper across the P1 and P2 Terminals (remote setpoint input).

8.Remove the red dust cover from the test plug socket at the bottom of the W7100G. Insert the “Test Plug”, from the kit, into the test plug socket. The test plug overrides most of the built-in time delays for staging the compressors “On” and “Off”.Refer to the illustration in Figure 38 for terminal and control dial identification.

9.Set the “Reset F” dial at 20ºF and the “Setpoint F” dial at 10ºF

SS-SVX09A-EN

75

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Trane RAUC-C20, RAUC-C50, RAUC-C30, RAUC-C60, RAUC-C40, RAUC-C25 manual Ohms 4200 4000 3800
Page 74 Page 76

RAUC-C20, RAUC-C40, RAUC-C25, RAUC-C30, RAUC-C60 specifications

Trane, a leader in HVAC solutions, offers innovative air conditioning units designed for superior performance and energy efficiency. Among their advanced products are the Trane RAUC-C30, RAUC-C20, RAUC-C40, RAUC-C60, and RAUC-C50, which cater to various cooling and heating needs in residential and commercial applications.

The RAUC-C series showcases cutting-edge technology, ensuring effective climate control while minimizing energy consumption. These units are equipped with variable-speed compressors, allowing for precise cooling capacities and reduced noise levels during operation. This feature ensures that users can enjoy optimal comfort without the disruptive noise often associated with traditional HVAC systems.

One of the standout technologies used in the RAUC-C series is Trane’s advanced inverter technology. This system intelligently adjusts the compressor speed based on real-time cooling demands, enhancing efficiency and prolonging the unit's lifespan. Additionally, the units come with high SEER (Seasonal Energy Efficiency Ratio) ratings, making them an excellent choice for those looking to lower their energy bills while maintaining a comfortable indoor environment.

The RAUC-C series units are designed with durability in mind. Constructed with robust materials, these air conditioning systems are built to withstand varying weather conditions. Their compact and lightweight design makes installation straightforward, and they can fit seamlessly into a variety of spaces, from residential homes to commercial buildings.

Another key characteristic of the RAUC-C series is their eco-friendly refrigerant, which meets strict environmental regulations. This not only supports sustainability efforts but also ensures efficient cooling performance. Furthermore, their smart technology capabilities enable integration with modern smart home systems, allowing users to manage their cooling settings remotely for added convenience.

Trane's focus on user-friendly interfaces makes these units easy to operate. The intuitive control systems allow users to customize their cooling preferences easily, providing flexibility to adapt to individual comfort needs.

Overall, the Trane RAUC-C30, RAUC-C20, RAUC-C40, RAUC-C60, and RAUC-C50 stand out for their energy efficiency, advanced technology, durability, and user-focused design. These features make them reliable choices for anyone seeking efficient and effective heating and cooling solutions.
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