Installation Instructions

ManualsBrandsSiemens ManualsAir conditioning controllerPOWERS CONTROL RC195 Multiple Input Receiver Controller Technical Instructions

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Installation Instructions

Document No. 129-230

September 10, 2018

RC 195 Multiple Input Receiver-Controller

Item Number 129-230+2, Rev. CA Page 1 of 8

Product Description

The RC 195 Multiple Input Receiver-Controller is a

pneumatic instrument that can be used as a one

input (DA or RA), two input (DA or RA with reset), or

three input (DA or RA with reset and control point

adjust) instrument.

It produces a pneumatic control signal based on the

net pneumatic input and the mechanical settings,

such as set point, percent proportional band, and

authority.

Troubleshooting

Before troubleshooting the operation of the RC 195

Multiple Input Receiver-Controller, check the

following:

• supply pressure at the unit is 22 2 psi

(152 kPa)

• transmitter input being used is between 3

and 15 psi (21 to 103 kPa)

• only one restrictor supplies the transmitter

• transmitter calibration is correct

Contents

• RC 195 Multiple Input Receiver-Controller

• Custom labels for connector identification

• Stick-on scales for setpoint dial

• Scale conversion card

Product Number

195-2000

The RC195 Multiple Input Receiver-Controller

replaces the products listed in Table 1.

Table 1. Cross Reference.

Manufacturer

Product Number

Barber-Colman

RKS-3002

RKS-4002

Honeywell

PR908B

RP920B

Johnson Controls

T-5800-3

Robertshaw/Siebe

P341

P541

Required Tools

• Flat-blade screwdriver

• Two No. 8 or No. 10 screws

• RC 195 Simulator for calibration of two and

three inputs

Expected Installation Time

45 minutes

Table 2. Troubleshooting Chart.

Complaint

Check

Probable Cause

Corrective Action

Control pressure

stays close to

zero

Rotate setpoint

adjustment screw

counterclockwise

Pressure

increases

Transmitter sensing medium which is

above (RA) or below (DA) the

proportional band

None

Receiver-controller out of calibration

Recalibrate

Pressure remains

unchanged

Plugged pilot relay restrictors

Replace pilot relay

restrictors

Receiver-controller is defective

Replace receiver-controller

Control pressure

stays close to

supply (main)

pressure

Rotate setpoint

adjustment screw

clockwise

Pressure

decreases

Transmitter sensing medium which is

above (DA) or below (RA) the

proportional band

None

Receiver-controller out of calibration

Recalibrate

Pressure remains

unchanged

Receiver-controller is defective

Replace receiver-controller

Summary of content (8 pages)

PAGE 1
Installation Instructions Document No. 129-230 September 10, 2018 RC 195 Multiple Input Receiver-Controller Product Description Contents The RC 195 Multiple Input Receiver-Controller is a pneumatic instrument that can be used as a one input (DA or RA), two input (DA or RA with reset), or three input (DA or RA with reset and control point adjust) instrument.
PAGE 2
Document No. 129-230 Installation Instructions September 10, 2018 Authority application Prerequisites • Clean, dry, oil-free air supply • Constant air supply. The receiver-controller and transmitter are factory calibrated to use 22 2 psi (152 kPa) air supply Specifications Operating Action: Input #1 Input #2 Reset: Input #3 Inputs 1 and 3 provide direct action with reverse reset (Figure 1), and Inputs 2 and 3 provide reverse action with direct reset (Figure 2).
PAGE 3
Document No. 129-230 Installation Instructions September 10, 2018 Installation, Continued Figure 3. Custom Connector Labels for a Barber-Colman Installation (Shaded Labels are Not Used). Figure 4. Custom Connector Labels for a Honeywell Installation. Figure 5. Custom Connector Labels for a Johnson Controls Installation (Shaded Labels are Not Used). Siemens Industry, Inc.
PAGE 4
Document No. 129-230 Installation Instructions September 10, 2018 Installation, Continued Figure 6. Custom Connector Labels for a Robertshaw/Siebe Installation. 1. Remove the old receiver-controller from the wall. 2. Mount the receiver-controller in any position on any vertical surface using two No. 8 or No. 10 screws. The integral mounting tabs are located on the top and bottom of the case. NOTE: 1.
PAGE 5
Document No. 129-230 Installation Instructions September 10, 2018 Installation, Continued 5. Select the stick-on label that corresponds to the range of the transmitter piped to the plug-in connector 1 or 2. See Table 6 for DA scale ranges or Table 7 for RA scale ranges. Apply the label to the set point dial. 6. Check the supply pressure. The supply pressure must be a constant 22 2 psi (152 kPa). If it is different or if a dual air supply is used, error will be introduced into the transmitted signal.
PAGE 6
Document No. 129-230 Installation Instructions September 10, 2018 Installation, Continued Figure 8. Percent Proportional Band Equivalents for 10 psi Output or for Gain. (Label Affixed Inside the Receiver Controller Cover). Calibration Before making adjustments, several calculations are necessary. Steps 1, 2, 3, and 4 must be completed before installation and the values recorded for future reference. 1. Determine percent proportional band setting using Formula A, Table 8, or Table 9.
PAGE 7
Document No. 129-230 Installation Instructions September 10, 2018 Calibration, Continued Single input (See Figure 11) Figure 10. Sample Percent Authority. Change of input 1 or 2: 120 - 80°F (49 - 27°C) Change of input 3: 65°F – (-10°F) or (18°C – [-23°C]) TR: 10°F (5.6°C) % Authority (120 - 80) + 10 160 x x 100 100 65 - (-10) Percent authority = 107% For metric: (49 - 27) + 10 160 x x 100 100 18 - (-23) Percent authority = 107% 3. Determine set point conditions.
PAGE 8
Document No. 129-230 Installation Instructions September 10, 2018 Two or three inputs (See Figure 11) 5. Set point. Turn the set point adjustment screw of the receiver-controller to obtain the desired control pressure. Pull the set point dial up, turn it to agree with the set point recorded above, and then release it. 6. Check operation. Simulate pneumatic inputs corresponding to both ends of the reset schedule to ensure that the receiver controller is in calibration throughout its entire range.