Trane RTHC-SVN02C-EN Installation Manual Download Page 3

RTHC-SVN02C-EN

3

Condenser Water Regulating Valve 

Installation

It is recommended that the valve be installed downstream of the condenser to insure 
undisturbed flow into the condenser. Also insure that the condenser does not drain 
when the valve is shut off and or when the water pump is off. Drainage of the 
condenser will increase tube fouling. 

 

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.

1.

Inspect the valve for the proper rating.

2.

Remove the protective flange covers from the valve.

3.

Ensure the valve is free of shipping defects.

4.

Be certain the waterway is free of all debris.

5.

Almost close the valve prior to installing to avoid damage to the disc or seat of 
the valve. Refer to Figure 1.

6.

The valve can be installed at any angle; therefore it is recommended that the 
indicator and controller be positioned so that it can be read and adjusted, if 
necessary.

7.

Place the valve between the flanges. Do not use any gasketing material. The 
elastomer seat extends beyond the valve seat and provides a leak proof seal 
between the valve and the mating pipe flange faces.

Important: 

Gaskets are not needed and should not be used when the valve is 

installed between standard weld neck or slip-on type flanges.

8.

Install all bolts between the valve and the mating flanges. Hand tighten all bolts 
as necessary.

9.

Torque the bolts in the sequence outlined in Figure 2 and to the value listed in 
Table 2.

10.

Verify full stroke operation with the manual crank and rotation indicator.

Figure 1

 Correct Position of the Valve Seat

Summary of Contents for RTHC-SVN02C-EN

Page 1: ...o or greater than the evaporator leaving water temperature The system also must achieve a leaving condenser water temperature 25 F higher than the evaporator leaving water temperature within 2 minutes...

Page 2: ...ance Instructions for UL Approved Valves found on the internet at http www cranevalve com Water Valve Rating Confirm that the correct valve was shipped by referring to the Center Line nameplate attach...

Page 3: ...e certain the waterway is free of all debris 5 Almost close the valve prior to installing to avoid damage to the disc or seat of the valve Refer to Figure 1 6 The valve can be installed at any angle t...

Page 4: ...Size inches Bolt Length inches Required Torque ft lbs 6 200 8 3 4 10 2 25 100 8 200 8 3 4 10 2 25 100 6 300 12 3 4 10 2 1 2 25 100 8 300 12 7 8 9 2 3 4 50 200 NOTE Bolting and Torquing recommendations...

Page 5: ...e The actuator is intended for indoor use Special precautions must be taken if the actuator will be exposed to rainwater or direct sunlight Failure to adequately protect actuator may result in equipme...

Page 6: ...factory set to allow the valve to operate with the largest allowable number of steps If the valve appears to sluggish the sensitivity may need to be decreased CAUTION Equipment Damage Valve should be...

Page 7: ...If the controller is not factory installed use the procedure below to mount the controller Installation 1 Locate the factory mounted pressure differential switch for detecting low system differential...

Page 8: ...e service valve on the evaporator and condenser where the transducers will be installed 5 Install one of the transmitters to condenser service valve located on the top of the shell NOTE Install a schr...

Page 9: ...le 1 The transducer ships from the supplier with a four wire cable and a ground Only 2 wires and the ground will be used Install a fork connector to the black lead red lead and the ground The white an...

Page 10: ...r and Input on the actuator 3 Connect the second lead to Output 4U1 controller Input on the actuator Note If the water valve and actuator were not ordered the signal can also be used by a BAS system C...

Page 11: ...ucer 4R1 connected to condenser pressure and arrange so transducer 4R2 can be connected to either atmospheric or above 70 psi Apply 24 VAC to 4U1 and line power to valve Stroke valve open and closed b...

Page 12: ...fied licensed electrician or other individual who has been properly trained in handling live electrical components perform these tasks Failure to follow all electrical safety precautions when exposed...

Page 13: ...re the voltage across S1 and S for the condenser transducer Measure across S2 and S for the evaporator transducer 3 Compare the voltage reading to the graph in figure 7 The converted pressure should b...

Page 14: ...ve actuator incorrect signal sent by 4U1 ASM module failure of one or both of the pressure transducers incorrect power supply loose connections Valve opening unstable noise on signal line potentiomete...

Page 15: ...00906 144 inches Conductor cable UNN00040 2 1 4 flare union internal BRK02884 1 Bracket NUT00148 4 10 32 nut SCR01557 4 10 32 x 1 screw Table 5 List of Water Regulating Valves one required Trane Part...

Page 16: ...re Order Number RTHC SVN02C EN File Number SL RF RLC RTHC SVN02C EN 0503 Supersedes RTHC SVN02B EN Stocking Location Inland Trane A business of American Standard Companies www trane com For more infor...

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