Daikin ARQ- User Manual

Page 2 - List of Illustrations; Software ID

IM 613 / Page 2 (Rev. 5/00) Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Component Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Microprocessor . . . . . . . . ....

Page 3 - Certified Drawing; CAUTION; Introduction

Certified Drawing IM 613 / Page 3 (Rev. 5/00) T h i s m a n u a l p r o v i d e s i n f o r m a t i o n p e r t a i n i n g t o t h eMicroTech Unit Ventilator Controller (UVC) as applied in theAAF-HermanNelson Unit Ventilator product line. It should be used i n c o n j u n c t i o n w i t h t h e s ...

Page 4 - MicroTech; Figure 1. MicroTech Unit Ventilator Controller; General Description

IM 613 / Page 4 (Rev. 5/00) J6 J7 J8 J9 LED RELAY OUT AUX OUT STATUS POWER PWR G 0 H 1 2 3 4 5 6 7 8 V 9 10 G 24V 1 2 3 1 2 3 4 5 6 R 5 4 3 2 1 0 G S G S G S G S G S G S G S G S G S1 S0 COMMB COMM A DIGITAL INPUT IN 13 IN 12 IN 7 IN 6 IN 5 IN 4 IN 3 IN 2 IN 1. 0 J1 J2 J3 J4 J5 MicroTech ® 325 Contro...

Page 5 - Power LED; Note: On slave and network controllers, these three setpoint; Status LED; Figure 2. Hex Switches; HI Hex; Table 2. Hexadecimal to Decimal Conversion Guide

Certified Drawing IM 613 / Page 5 (Rev. 5/00) Status LED State Indication On Continually Occupied Mode On 1 ⁄ 2 sec./ Off 5 1 ⁄ 2 sec. Unoccupied Mode On 5 1 ⁄ 2 sec./ Off 1 ⁄ 2 sec. Tenant Override Mode Flashing* Alarm Condition On 3 sec. / off 3 sec.** Calibration on-board status LED. If used, the...

Page 6 - Standard Control Features

IM 613 / Page 6 (Rev. 5/00) Actuators The UVC uses hydraulic, spring return, floating control actuatorswith position feedback for valve and damper modulation. Theseactuators are controlled using the “Change” and “Step-and-Wait”control algorithms. All cooling valves are normally closed, and allheatin...

Page 7 - Table 3. Alarm & Controlled Response Feature Availability

Certified Drawing IM 613 / Page 7 (Rev. 5/00) Compressor Short-Cycle Protection All compressor-equipped unit ventilator models (self-containedor split system) include compressor short-cycle protection. When a compressor is energized, it will remain energized for atleast 2 minutes before the temperat...

Page 8 - Communication Type; Factory And/Or Field Configured Options

IM 613 / Page 8 (Rev. 5/00) Sensor DiagnosticsIf a temperature sensor’s value is out of range, the UVC willdetect it and take the appropriate action. Each sensor fault has aspecific priority, alarm indication, and set of response actions. Actuator Feedback DiagnosticsThe UVC will monitor the positio...

Page 9 - ASHRAE Cycle

Certified Drawing IM 613 / Page 9 (Rev. 5/00) • Day-night changeover scheduling • Heating and cooling setpoint adjustment • Minimum OA damper position setpoint adjustment • Ventilation lockout • Change filter alarm • Demand limiting Communication Failure: If the MicroTech network communica-tion link...

Page 10 - Table 4. Programs and Software Models; Figure 3. Software ID Tag

IM 613 / Page 10 (Rev. 5/00) UV 1 S 2 B Unit VentilatorProgram NumberUnit Type S = Stand-alone, Open ProtocolM = Master/SlaveN = MicroTech Network Software Version (Numeric)Software Version Revision (Alphabetical) Unit Ventilator Controller software is factory installed and testedin each unit prior ...

Page 11 - WARNING; Commissioning; Table 5. Model-Specific Unit Ventilator Installation Literature; Required Tools and Literature

Certified Drawing IM 613 / Page 11 (Rev. 5/00) The following commissioning procedures pertain to unit ventila-tors equipped with the MicroTech Unit Ventilator Controller (UVC).These procedures must be performed in addition to the mechanicaland electrical system commissioning procedures that areoutli...

Page 12 - Note: Field terminations are not required for the factory-mounted; Table 7. Network UVC Default Setpoints; Setpoint Initialization; Note: I n a m a s t e r / s l a v e a p p l i c a t i o n , t h e m a s t e r ’ s p o t

IM 613 / Page 12 (Rev. 5/00) 4. Check that the conductors have been terminated at the unitand the wall sensor package in accordance with the fieldwiring diagram. 5. Check that the cable length between the wall sensor packageand its UVC does not exceed 250 feet. 6. 460V, Type AE & AZ Only: Check ...

Page 13 - Table 8. Network Communication Port Terminal Voltage Ranges

Certified Drawing IM 613 / Page 13 (Rev. 5/00) Following are UVC start-up procedures for each communicationtype. The start-up procedure must be performed by a qualifiedtechnician for every UVC on a job. Stand-alone Because stand-alone controllers are independent of each other,they may be started in ...

Page 15 - To Check Existing Slave UVC; Network

Certified Drawing IM 613 / Page 15 (Rev. 5/00) properly. Do this by switching these devices and observingthe status LED. 5. Check for proper voltage levels at the Comm B port. Use a DC voltmeter to test the voltage levels at the CommB terminals with respect to ground. The terminals andacceptable vol...

Page 17 - Diagnostics & Service; Clearing Faults; Note: The cause of a manual reset fault should be investigated; Alarm Descriptions

Certified Drawing IM 613 / Page 17 (Rev. 5/00) switch to either desired speed, wait 5 minutes until calibra-tion is complete. 4. Check the status LED. The status LED should illuminate after calibration. If a wallsensor package is used, the remote status LED should alsoilluminate. 5. Check for proper...

Page 18 - Table 9. Alarm and Fault Code Summary

IM 613 / Page 18 (Rev. 5/00) Status LED Alarm Description Unit Ventilator Model Blinks (Fault) Trigger Factory Setting Fault Reset (Priority ` (Clear) AED AZS ARQ AVS AHF AEQ AZQ ERQ AVV AHV ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●...

Page 19 - Brownout

Certified Drawing IM 613 / Page 19 (Rev. 5/00) The low DX coil temperature switch (T4) is wired in series withthe compressor relay output (RO-2) and the UVC alarm input.Switch T4 will open when the coil temperature falls below itssetpoint. Refer to “Test Procedures” in the “Service Information”secti...

Page 20 - PC Connection; Service Information; Outdoor Air Temperature Sensor Failure

IM 613 / Page 20 (Rev. 5/00) PC Connection A personal computer (PC) equipped with the appropriateMonitor software may be directly connected to any UVC.Typically, for start-up or service purposes, the PC would be aportable laptop or notebook type (see PC specification below). For stand-alone, master,...

Page 21 - Table 10. RS-232 Communications Cable Terminations; Master UVC Connection Procedure; Note: The above procedure will also reconfigure port Comm B.; UVC Inputs and Outputs

Certified Drawing IM 613 / Page 21 (Rev. 5/00) Comm. Port Terminal Connection 1 Jumped to terminal 2 2 Jumped to terminal 1 3 Transmit 4 Not used 5 Receive 6 Ground Table 10. RS-232 Communications Cable Terminations Digital InputsThe UVC has six digital inputs, all of which are available forexternal...

Page 26 - Test Procedures; Table 18. Thermistor Chart

IM 613 / Page 26 (Rev. 5/00) Test Procedures This section contains troubleshooting procedures for thefollowing: • Microprocessor problems • Power supply problems • Erroneous temperature readings • Temperature sensor faults (codes 2, 10, 11, 12, 13, and14) • Digital input faults (codes 3, and 5) • Br...

Page 28 - UVC Replacement; N o t e : I f t h e l i n k a g e i s d i s c o n n e c t e d o r d a m a g e d , i t i s

IM 613 / Page 28 (Rev. 5/00) UVC Replacement Data relating to the unit ventilator configuration and actuatorcharacteristics are stored at the factory when each unit is builtand tested. This information defines the program number,software model, and several parameter settings that areunique for each ...

Page 29 - Note: The same procedure is used for MicroTech 125 control-

Certified Drawing IM 613 / Page 29 (Rev. 5/00) Valve And Damper Actuator CalibrationProcedures Points to keep in mind about actuator calibration.Actuator calibration must be performed...• after every actuator replacement • after any linkage adjustment • as a service test to verify proper operation w...

Page 30 - Note: The same procedure is used for MicroTech 125 control-

IM 613 / Page 30 (Rev. 5/00) 4. On the Read/Write screen, in the Operation box selectthe Monitor radio button by clicking on it. In the Displaybox select the Decimal radio button by clicking on it. 5. Enter the following string of memory addresses into theMemory Address box exactly as shown then pre...

Page 31 - Note: T h e s a m e p r o c e d u r e i s u s e d f o r M i c r o Te c h 1 2 5

Certified Drawing IM 613 / Page 31 (Rev. 5/00) 9. Watch memory location 0507 change, when this value stopschanging, the OA damper should be fully opened. On asheet of paper, write this value down for later use. 10. Write a 0 to location 0214. Then write a 255 to location0215, this will return a valu...

Page 32 - HermanNelson

AAF–HermanNelson 4900 Technology Park Boulevard, Auburn, New York 13021-9030 USA (315) 253-2771 Printed on recycled paper containing at least 10% post-consumer recycled material. ©2000 AAF – McQuay Incorporated HermanNelson ®

Table of Contents:

Summary

Other Daikin Models