AERCO RECON 1000 - Manual (Page 124)

RECON Water Heaters Installation, Operation & Maintenance Manual
CHAPTER 8 – WATER HEATER MANAGEMENT
Page 124 of 178 AERCO International, Inc.  100 Oritani Dr.  Blauvelt, NY 10913 OMM-0103_0A
PRI: 10/28/2014 Phone: 800-526-0288 GF-147
WHM MENU
See section 8-6 for a range of choices and the default values.
ITEM
MENU LEVEL &
OPTION
DESCRIPTION
30 MB Head Temp En Enable or disable the Modbus Header Temp sensor
31 WHM Header Temp Display the Header Sensor
32 Mdbus Temp Units Modbus temp unit format (˚F or ˚C)
33 Header Temp Addr Modbus header Temp address.
34 Header Tmp Point Modbus point to read the header temp register point
35 MB Outdr Sens En Enable or disable the Modbus Outdoor Temp sensor
36 WHM Outdr Temp Display Outdoor temp value
37 Outdoor Tmp Addr Modbus Outdoor Temp address
38 Outdoor Tmp Pnt Modbus point to read the Outdoor Temp register point
39 Err Threshold Max allowable comm errors before a comm. fault is invoked.
40 Comm Address Set the Comm Address for the unit (This option also available in setup menu)
41 1 WHM Units 8
This menu item shows the current status for each unit controlled by WHM (8
max.). The characters displayed are defined as:
- = Off Line, * = Not available (fault, etc.), 0 = Off, 1 = On,
A = Lead On, a = Lead Off, B = Lag On, b = Lag Off
The following example shows the status of 5 units being controlled by WHM:
1 WHM Units 8
_ 1_ _0_ _1_ _*_ _A_ _b_ ___ ___
Where: Unit 1 & 3 = On, Unit 2 = Off, Unit 4 = Not available,
Unit 5 = Lead On, Unit 6 = Lag Off
NOTE
The WHM Nxt On VP and WHM Nxt Off VP will determine how tight a range the
temperature is controlled over and how quickly the system responds to a change in load.
A narrow difference between Nxt On VP and WHM Nxt Off VP will make the system more
responsive to load changes.
8.8 WHM HARDWARE INSTALLATION & SET-UP INSTRUCTIONS
The following sections provide the basic installation and set-up instructions for implementing a
Water Heater Management System (WHM) to control up to eight (8) AERCO RECONRECON
Water Heaters. The installation procedure included in Chapter 2 is repeated here to avoid
unnecessary referencing.