Watts AERCO EXT Installation, Operation & Maintenance Manual page 67

Ufly Controller and BCM for Modulex EXT
CHAPTER 7: BCM MODBUS AND ADDRESS ASSIGNMENTS
Table 7-4: BCM Standard Holding Register Address Mapping
Modbus Data
Menu Item
Address
Pump Modulation
3008 Output @ Maximum
Burner Level
Burner Minimum
3009
Modulation Level
Water Δ Temp.
3010
Protection
Communication
3011
Timeout Time
3012 Temperature Units
Analog Input
3013
Minimum Target
3014
Temperature
Maximum Target
3015
Temperature
3050 Application Code
3051 Services Enable
OMM-0159_A • 6/28/2022
Units and Range
0°F/2°F – 90°F
(0°C/1°C-50°C)
0/10 – 240 sec. (in 10 sec.
0/1; 0 =°C, 1 = °F
0/1; 0 = Setpoint Adjust,
1 = Outdoor Temp Sensor
Function 2 = 0-10V setpoint control
3 = DO NOT USE
(20°C to 40°C)
113°F to 212°F
(45°C to 100°C
Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST
0 – 10V
(Value x 10)
0 – 100%
0 = Disabled
intervals)
0 = Disable
68°F to 104°F
0/1
(e.g., AERCO ACS, Remote
19 = Heating + Antifreeze
0-255
Default/(Comments)
(Read/Write)
10V
(Read/Write)
35%
(Read/Write)
36°F
(Read/Write)
30 sec.
1 = °F
(Read/Write)
1
(Read/Write)
86°F
(Read/Write)
185°F
0 = Burners Array
1 = Standalone Burners
16 = Control via Modbus
Setpoint from BAS/EMS)
17 = Heating only
18 = Antifreeze only
24 = DHW only
25 = Heating + DHW
26 = DHW + Antifreeze
27 = Heating + DHW +
Antifreeze
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