Aerco BMS 168 Manuel d'utilisateur

Boiler Management SystemInstallationInstructionsAERCO International, Inc.159 Paris Avenue Northvale, NJ 07647-0128

Time Delay Between Boiler Starts: A fixed, 30-second time delay between boiler starts ensures smooth energy input without spikes in electrical, gas,

Section 3 ______________________________ Installing the BMS________ Please follow the installation procedure in the order presented. Incorrect wi

WARNING! Turn off AC input power to the BMS to avoid electrical shock. 3.3 PULSE WIDTH MODULATION WIRING Pulse width modulation (PWM) wiring conn

Connect the RS485 wiring at the BMS as follows: • Connect the positive (+) lead to the +(B) terminal of JP11. • Connect the negative (-) lead to th

3.6 INTERLOCK WIRING The BMS is equipped with two interlocks designated Interlock 1 (INT 1) and Interlock 2 (INT 2). Since both interlocks must be c

3-5

Figure 2 BMS MOUNTING 3-6

Figure 3 RECOMMENDED WIRE ROUTING LOCATIONS AT THE BMS 3-7

Figure 4 PWM COMMUNICATION OUTPUTS AT THE BMS 3-8

Figure 5 PULSE WIDTH MODULATION CONNECTIONS AT KC SERIES BOILER WITH MODULAR CONTROL BOX 3-9

Telephone Support Direct to AERCO Technical Support (8 to 5 pm EST, Monday through Friday): 1-800-526-0288 AERCO

mA OUTRS-485 COMM.+-+-ANALOG INSENSOR COMMONOUTDOOR SENSOR INREMOTE INTL'K INB.M.S. (PWM) INSHIELD+-+-AUX SENSOR INNOT USEDEXHAUST SWITCH

Figure 7 PWM CONNECTIONS AT BENCHMARK BOILER WITH MODULAR CONTROL BOX 3-11

mA OUTRS-485 COMM.+-+-ANALOG INSENSOR COMMONOUTDOOR SENSOR INREMOTE INTL'K INB.M.S. (PWM) INSHIELD+-+-AUX SENSOR INNOT USEDEXHAUST SWITCH

Figure 9 BMS RS485 & RS232 CONNECTOR LOCATIONS 3-13

Figure 10 BMS RS485 & RS232 CONNECTOR PIN ASSIGNMENTS 3-14

1/2 “ NPT Figure 11 HEADER SENSOR INSTALLATION WITH WELL 3-15

3-16 Figure 12 OUTSIDE AIR SENSOR MOUNTING AND CONNECTIONS

Section 4 ______________________________ Familiarizing Yourself With the BMS_____ 4.1 ABOUT BMS MODES The BMS has three basic modes: Normal Mod

4-2 Figure 13 NORMAL & FIELD ADJUST MODE OVERLAY

4-3 Figure 14 SYSTEM CONFIGURATION MODE OVERLAY

Table of Contents Page SECTION 1 ABOUT YOUR NEW BOILER MANAGEMENT SYSTEM (BMS) 1-1 SECTION 2 FEATURES OF THE BMS

NOTE Sample Normal Mode displays with their Factory Default values are provided in Appendix C. 4.2 NORMAL MODE DISPLAYS AND FUNCTIONS When power is

4.2.12 ▲ and ▼ Arrow Keys The ▲ and ▼ arrow keys are not active in this mode, since no changes can be made to the displayed settings 4.2.13 ON a

7. Repeatedly pressing the HDR TEMP key allows the NETW BOILER ADDRESS to be set for each boiler being controlled on the Modbus Net-work. 4.3.2 AIR

4.3.5 SYS START TEMP When in the Field Adjust Mode, the SYS START TEMP key has two functions. First, It lets you select the outdoor temperature at w

4.3.8 FIELD ADJ The FIELD ADJ key LED should be lit to indicate that the BMS is already in the Field Adjust Mode. Pressing and releasing this key wh

5. Press key a fifth time. OFFSET OFF TIME DAY 1 Æ 0: 0 is displayed prompting Hours to be entered for off time. Since the BMS uses a 24-hour clock

Selecting INTERLOCK 2 causes the Fault Relay to close and generate an alarm only when Interlock 2 opens. However, if INTERLOCK 1 opens, a fault mes

If SWITCH INPUTS is selected, the BMS will automatically switch to Constant Setpoint mode if a sensor or remote input error occurs. Once the sensor

4.4.4 START LEVEL and STOP LEVEL Keys These keys allow you to set the energy levels (firing rate percentages) at which additional boilers are staged

As the load drops off, the firing rates decrease. When all boilers reach the stop level, the first boiler turned on will be shut off by the BMS and i

Table of Contents (Continued) 4.2.13 ON and OFF Keys 4-5 4.2.14 CONFIG SYS 4-5 4.3 FIELD ADJUST MODE FUNCTIONS 4-5 4.3.1 HDR TE

specific installation. The factory defaults preset by AERCO work well for most applications. In instances when there is a large error between the set

4.4.8 AUX RELAY This key is used to display or change the firing rate at which the Auxiliary Relay opens and closes. The Auxiliary Relay is typically

Section 5 ______________________________ Programming the BMS Mode of Operation__ Prior to programming, the BMS must be mounted and all required w

5.1.4 Entering the Building Reference Temperature To enter the Building Reference Temperature, perform the following steps: 1. Enter Field Adjust

NOTE Steps 5, 6 and 7 scale the 20 mA Remote Signal to the selected HDR HIGH LIMIT and HDR LOW LIMIT settings. 5. Select the desired header high temp

5.4.1 C-More Control System PWM Setup For PWM communication, each boiler’s C-More Control System must have the Configuration Menu items properly set

5.6 TESTING THE SYSTEM The following procedure places a load on the system and will begin firing the boilers. At this point it is very important to m

Appendix A ____________________________ SPECIFICATIONS INPUTS POWER Input voltage 120 VAC, 60Hz, 1 phase, ± 10%, fused at 1 A OUTSIDE AIR SEN

Table of Contents (Continued) SECTION 5 PROGRAMMING THE BMS MODE OF OPERATION 5.1 INDOOR/OUTDOOR RESET MODE 5-1 5.1.1 Selecting Indoor/Outdoor R

A-2 Appendix A (cont.) ________________________ CURRENT LOOP Input resistance 250 Ohms Protection Isolated from AC line potential, fuse-protect

A-3 Appendix A (cont.) ________________________ BOILER DRIVE Drive Type (PWM) Signal (with 12 msec time base) Optically-isolated, pulse width

A-4 Appendix A (cont.) ________________________ DEFAULT VALUES System State Halted (stop mode) Header Set Mode Indoor/Outdoor Reset Indoor Air

B-1 Appendix B _____________________________ Methods for Determining Reset Schedule and Indoor/Outdoor Reset Ratio Charts Using the Charts to Dete

B-2 Appendix B (cont.) _________________________ Header Temperature for a Building Reference Temperature of 50°F Reset Ratio Air Temp (°F)

B-3 Appendix B (cont.) _________________________ Header Temperature for a Building Reference Temperature of 65°F Reset Ratio Air Temp (0F)

B-4 Appendix B (cont.) __________________________ Header Temperature for a Building Reference Temperature of 70°F Reset Ratio Air Temp (0F) 0.

B-5 Appendix B (cont.) __________________________ Header Temperature for a Building Reference Temperature of 75°F Reset Ratio Air Temp (°F) 0

B-6 Appendix B (cont.) _________________________ Header Temperature for a Building Reference Temperature of 80°F Reset Ratio Air Temp (°F) 0.

B-7 Appendix B (cont.) _________________________ Header Temperature for a Building Reference Temperature of 90°F Reset Ratio Air Temp (°F) 0.6

iv List of Figures Figure 1 Typical BMS Installation 3-5 Figure 2 BMS Mounting 3-6 Figure 3 Wire Routing Locations at the BMS 3-7

C-1 Appendix C _____________________________ Normal (Read-Only) Mode Display Messages and Defaults Key Display Message Default Range HDR TEMP HEA

D-1 Appendix D _____________________________ Field Adjust Mode Display Messages and Defaults Key Display Message Default Range HDR TEMP (Press Onc

D-2 Appendix D (cont.)__________________________ Field Adjust Mode Display Messages and Defaults (cont.) Key Display Message Default Range SYS ST

E-1 Appendix E _____________________________ Config Sys Mode Display Messages and Defaults Key Display Message Defaults Range TEMP FAIL MODE TEM

F-1 Appendix F _____________________________ Temperature Sensor Resistance Data Temperature (°F) Resistance (ohms) Temperature (°F) Resistance

G-1 Appendix G _____________________________ Parts List Part Number Description Comment GP-122783 Boiler Management System (BMS) Complete BM

Section 1 ______________________________ About Your New Boiler Management System (BMS) AERCO’s Boiler Management System (BMS), stages and modulat

H-1 Appendix H _____________________________ TROUBLESHOOTING When a fault occurs in the boiler plant, the BMS flashes error messages at 2-second

H-2 Appendix H _____________________________ Table H1 Error Messages - Continued Fault Message Description & Possible cause SYSTEM ERROR,

H-3 Appendix H ____________________________ Table H2 Common Problems Problem Possible Causes Solution Boiler plant not started by BMS • Outsi

H-4 Appendix H _____________________________ Table H2 Common Problems - Continued Problem Possible Causes Solution Boilers overshooting setpoi

I-1 Appendix I _____________________________ GENERAL WIRING

Appendix J _____________________________ PROGRAMMING THE BMS USING RS-232 COMMUNICATION Introduction The RS-232 port on the left side of the BMS

Appendix J (cont.) __________________________ Programming Procedure BMS functions which can be viewed or changed are listed in Table J-1 along

Appendix J (cont.) __________________________ Table J-1. BMS COMMANDS No. COMMAND ENTRY RANGE FACTORY DEFAULT 00 Header Temperature (°

Appendix J (cont.) __________________________ Table J-1. BMS COMMANDS No. COMMAND ENTRY RANGE FACTORY DEFAULT 21 Aux Relay Mode 0 =

J-5 Appendix J (cont.) __________________________ Table J-1. BMS COMMANDS – (Continued) No. COMMAND ENTRY RANGE FACTORY DEFAULT 45 (Day

Appendix J (cont.) __________________________ Table J-1. BMS COMMANDS – (Continued) No. COMMAND ENTRY RANGE FACTORY DEFAULT 87 RS232 M

Appendix J (cont.) __________________________ Table J-1. BMS COMMANDS – (Continued) No. COMMAND ENTRY RANGE FACTORY DEFAULT 101 Net Bo

Appendix J (cont.) __________________________ Table J-1. BMS COMMANDS – (Continued) No. COMMAND ENTRY RANGE FACTORY DEFAULT 113 Net Bo

J-9 Appendix J (cont.) __________________________ Table J-1. BMS COMMANDS – (Continued) No. COMMAND ENTRY RANGE FACTORY DEFAULT 124

Section 2 ______________________________ Features of the BMS____ APPLICATION FLEXIBILITY Three different system or control options can be select