Weil-McLain Aqua Balance WMB-120, Manual, Page: 103 / 132

Part number 550-100-305/0118
103
AquaBalance TM
W
ALL
M
OUNT GAS
-
FIRED WATER BOILER
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Boiler Manual
Category E2 prom parameters Unit Range Def
Description Num. Address Description Low High Value
Central Heating 53 CL5 – 059D CH pump selection Num 0 7 0
Central Heating 54 CL5 – 0592 CH slope control °F/min 1 20 11
Central Heating 55 CL5 – 055E OTC curve selection Num 0 10 0
Central Heating 56 CL5 – 0562 OTC temperature offset °F 68 104 86
Central Heating 58 ML – 811A Summer/Winter function Num 0 1 1
Central Heating 59 ML – 8129 CH hysteresys after burner ignition °F 11 54 18
Central Heating 60 ML – 8120 CH hysteresys after burner ignition timer Sec 60 180 60
Dom. Hot Water 61 CL5 – 06F8 DHW maximum output % 0 100 100
Dom. Hot Water 62 Free - TBD
Dom. Hot Water 63 ML – 80D9 –“$;#X]#^†€X Num 0 1 0
Dom. Hot Water 64 CL5 – 127A Flow sensor ON ›Q™Z\] 0 100 15
Dom. Hot Water 65 CL5 – 1285 Flow sensor OFF ›Q™Z\] 0 100 10
Dom. Hot Water 66 ML – 80DE –“$;#X]#{Q^X Sec 0 10 0
Dom. Hot Water 67 ML – 811F DHW Off mode Num 0 4 0
Dom. Hot Water 68 ML – 813C `#]–“$;^#X^^jX]Z†ZX Hours 0 24 24
System 69 ML – 8122 Variable input switch functionality Num 0 4 4
System 70 ML – 8123 Gas type selection Num 0 1 0
System 71 CL5 – 121C Fan speed in Stand-by mode Hz 0 70 0
System 72 CL5 – 0934 Water pressure low limit psi 0 12 6
System 73 CL5 – 0A38 Water pressure nominal psi 7 29 10
System 74 CL5 – 2EDF Water pressure high limit psi 36 50 41
System 75 ML – 8128 “"^X{QQ\]!ZX Num 0 1 0
System 76 ML – 811B Main supply frequency Num 0 1 1
System 77 ML – 80DC Variable output relay functionality Num 0 8 0
System 78 ML – 812A External pcb variable output relay functionality Num 0 8 7
System 79 ML – 812B CH supply2 over-temp_burnerOFF °F 194 230 230
System 80 ML – 812C CH supply2 over-temp_burnerON °F 194 230 226
System 81 ML – 812D Water pressure protection Num 0 1 0
System 82 ML – 813B Post-Ventilation time Sec 0 255 27
System 83 ML – 813D Fault F20 function Num 0 1 0
System 84 ML – 80E0 3-way motor valve commutation timer Sec 4 10 4
Delta T protection 85 ML – 812E CH modulating pump PWM absolute min % 0 100 30
Delta T protection 86 ML – 812F CH modulating pump PWM start % 0 100 75
Delta T protection 87 CL5 - 0C64 CH modulating pump PWM absolute max % 0 100 100
Delta T protection 88 constant CH Time loop Sec 2
Delta T protection 89 constant DHW Time loop Sec 2
Delta T protection 90 constant CH modulating pump PWM_decrease step % 1
Delta T protection 91 constant CH modulating pump PWM_update_time Sec 4
Delta T protection 92 constant Virtual set point_decrease step °F 4
Delta T protection 93 constant Virtual set point_decrease time Sec 10
Delta T protection 94 constant DHW Virtual set point_decrease time2 Sec 12
Delta T protection 95 constant DHW Virtual set point_decrease time1 Sec 18
Delta T protection 96 constant DHW Virtual set point_increase time Sec 18
97 Free - TBD
98 Free - TBD
Figure 131
Troubleshooting suggestions for
AquaBalance
™
boilers — Fault displays and diagnostics
(continued)
34 Troubleshooting
(continued)