Table of Contents
Advertisement
RP92OD
GENERAL .......................................................................................................................................
Description ....................................................................................................................................
Application ...................................................................................................................................
Specifications ................................................................................................................................
Operation ......................................................................................................................................
RP920B or D Controller ...............................................................................................................
Equipment Required ........................................................................................................................
Operational Check ..........................................................................................................................
All Systems ...............................................................................................................................
System in Operation ....................................................................................................................
System not Operating-Sensors Disconnected ..................................................................................
Equipment ..............................................................................................................................
Pr0xdLu.e ................................................................................................................................
Operating Point (RP920A and B) ...................................................................................................
Operating Point as Maximum Limit (RP920C and D). .......................................................................
S etpoint ....................................................................................................................................
Compensation Startpoint (RP920B and D) .......................................................................................
Calibration ....................................................................................................................................
RP920A . . . . .
RP920B . . . . . .
RP920C and D . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Adjustments . . . . . . . . . . .
General . . . . . . . . . . . . . . . . . . . . . . . . .
TABLE OF CONTENTS
...................................................................................................................
Copyright
1993 Honeywell Inc.
RP920A-D
Modular Pneumatic
All Rights Reserved
�
Controller
Service Data
3
3
3
4
4
4
4
4
5
5
5
5
5
5
5
6
6
6
6
7
-7
9
9
9
85-0142
MLF
C. 6.
Advertisement
Table of Contents
Related Manuals for Honeywell RP920A-D
Summary of Contents for Honeywell RP920A-D
-
Page 1: Table Of Contents
Adjustments ... General ......85-0142 C. 6. Copyright 1993 Honeywell Inc. All Rights Reserved �... - Page 2 TABLE OF CONTENTS (Continued) Direct to Reverse Acting ..““““““.““.““.“““.‘..“‘.““. ..“.“.“‘.‘.““.“.‘.‘..‘..*... Negative to Positive Compensation (RP920B and D) Integral Action Cut-Off and Gage Function (RP92OC and D) ..“‘.“.“..“..t.“‘..““““..““.‘.“““‘.““.‘.‘.““*““.“““.‘..‘...*..tl. Setpoint Adjustment Local Setpoint Adjustment ..“““.“‘.“.“‘.““.““““‘.““““““.“““‘.““““.“‘.““‘.‘.‘..“..“..--.‘. ..““““““““““‘.““‘.‘.“.‘..““.“““‘..“*“‘.““.““..“““..“‘...‘*.‘..‘...“. Remote Setpoint Adjustment ..“““..““.““‘...‘n‘..“..‘f...s Control Point Adjustment (CPA Models Only) ..,‘.“““‘..“.‘...*..‘..
-
Page 3: General
GENERAL DESCRIPTION The RP920 Modular Pneumatic Controller, in through the primary controller (RP920C) maintaining a conjunction with remote sensors, provides Proportional (P) constant mixed air temperature. The limit controller or Proportional Plus Integral (p + I) control of temperature, (RP920A) and limit sensor sets outdoor air intake to humidity, pressure, or dewpoint in WAC systems. -
Page 4: Specifications
OPERATION SPECIFICATIONS RP920A OR C CONTROLLER Models: RP920A: Single-Input Controller In the mixed air control system with high limit (Fig. 1), RP920B: Dual-Input Controller the primary controller modulates the outdoor and return air RP920C: Single-Input P + I Controller damper to maintain the mixed air temperature set on the RP920D: Dual-Input P + I Controller controller. -
Page 5: Inspection And Cleaning
INSPECTION AND CLEANING of the throttling range as set by the authority and compensation startpoint. If a discrepancy exists, recalibrate the controller. Occasionally, check for leaks and loose fittings and 4. Move th e setpoin t slightly up and down. The BLP screws. -
Page 6: S Etpoint
Throttling range = b. Set the setpoint knob to the percent of span, Proportional Band = 5 percent. temperature, or humidity that corresponds to the Setpoint = 1OOF (or 30 percent). input pressure. The BLP should be 8 psi (55 kPa). -
Page 7: Calibration Check
CALIBRATION CHECK OPERATING POINT AS MAXIMUM LIMIT (RP920C and D) TheRP920 is factory calibrated. If the controller does not 1. Pipe the connections (Fig. 7). Install Barb Fitting operate properly, check the calibration as follows, 14003755-001 in Port 8 and in the top of the integral module. -
Page 8: Compensation Startpoint (Rp920B And D)
RP920A If none exists, install a temporary receiver gage sensor) or a 0- to 30-psi gage in the (matching primary sensor gage port. 2. Apply MLP. 3. Install a 0- to 30-psi gage in the BLP test tap. 4. Adjust the setpoint knob until the BLP equals the centerpoint of the controlled device spring range. -
Page 9: Rp920C And D
RP920C AND D 1. Remove and save the screw from the RP92OC or D PRIMARY SENSOR integral module (Fig. 12) and install Barb Fitting THROTTLING RANGE 14003755-001 in its place. 2. Apply 8 psi (55 kPa) to the integral module. 3. Calibrate the RP92OC following the procedures for the RP920A. - Page 10 I - M A I N I - M A I N E - B R A N C H P-BRANCH 3-SENSOR 3-SENSOR 4 - V E N T VENT B-CLOSED G A G E PLUG BLOCK MODULE BRANCH GAGE PORT NTEGRAL MODULE...
-
Page 11: Direct To Reverse Acting
NEGATIVE TO POSITIVE COMPENSATION (RP920B and D) Positive compensation is used for summer compensation or humidity reset applications. Loosen the four screws on the compensation module ADJUSTMENT (Fig. 16). Remove the module. Rotate the module and its gasket reinstall. 180 degrees and Ensure that the notch on the module lines up with the proper indication on the base. -
Page 12: Integral Action Cut-Off And Gage Function (Rp92Oc And D)
Loosen the three screws securing the switch block Control Point Adjustment (CPA models only)--- module and remove the module. Remove the gasket Thd baseline setpoint on the controller can be and note the symbols embossed on the back of the adjusted percent of the primary sensor span module (Fig 17). -
Page 13: Proportional Band Adjustment
Throttling range in measured variable (use 0 for RP920D) If the authority is greater than 300 percent or must be calculated using pressure units, see RP920A-D Modular Pneumatic Controller Engineering Data 77-6082. NOTE: Calibration can cause the actual authority setting to vary from the calculated value. -
Page 14: Troubleshooting
TROUBLESHOOTING Table 3 lists the problems and solutions in troubleshooting in RP920 Controller, Table 3. RP920 Problem-Solution Chart. Problem Solution Replace setpoint module and recalibrate, 1. When setpoint is changed in both directions, BLP does not reach the minimum of 0.5 psi (3.5 kPa) or maximum of 2 psi (14 kPa) below mainline pressure. -
Page 15: Filter/O-Ring Replacement In Connector Block Module
FILTER/O-RING REPLACEMENT IN GAGE SEAL REPLACEMENT CONNECTOR BLOCK MODULE Remove the gage or gage plug (Fig. 20) from the connector block module or switch block module. Loosen the four screws securing the connector block 2. Insert a wire or paper clip into the hole in the center of module to the base (Fig. -
Page 16: Parts And Accessories
PARTS AND ACCESSORIES PARTS LIST Table 4. RP920 Parts List (Refer to Fig. 13). 14004276002 14004277-003 14004277-004 14004278-002 14004283-002 Includes Gage Seal and Plug 14004283-003 14004533-001 14004533-002 43188083-002 43188059-001 14004290-002 43 187524-001 43915905-l 10 14001865-001 14002172-001 14003757-001 ACCESSORIES 6. Cover (Clear Plastic): 1. Add-On Barb Fitting 14003755-001. - Page 22 NORTH YORK VERDUN 51417659355 Honeywell Home and Building Control Home and Building Control Helping You Control Your World Honeywell Inc. Honeywell Limited-Honeywell Honeywell Plaza 740 Ellesmere Road P.O. Box 524 Scarborough, Ontario Minneapolis, MN MLF TAB: II. C. 6. Rev. 3-89...