A.O. Smith UB - 70 Boiler User Manual


 
Installation and Service Manual Upsilon-Series
47
Boilerparam
Boiler parameters
P100 0 Domestic hot water facility (visible when boiler address is 2 - 8) 0-4
0: no DHW
1: Solo boiler with 3-wa
y
valv
e
2: n.a.
3: Solo boiler with c
y
linder loadin
g p
um
p
P4 and 3-wa
y
valve
4: n.a.
P102 0 Cascade flue gas system 0-3
0: Flue
g
as s
y
stem individual or collective under
p
ressure
1: N.a.
2: Flue gas system collective over pressur
e
3 N.a.
P108 0 Kind of gas 0-1
0: natural ga
s
1: propane ga
s
P122 0 DHW temperature sensor T3 0-1
0: autodetec
t
1: connected
P123 30 Switching time 3-way valve in seconds 0-255
P125 1 DHW priority 0-1
0: No
1: Yes
P132 1 Pump continuously 1-2
1:Unit
p
um
p
P1
2 Unit
p
um
p
P1 and installation
p
um
p
P
3
P154 100% Maximum load CH 0-100
P155 100% Maximum load DHW 0-100
P160 100% Maximum pump capacity (only with modulating circulation pump) 30-100
P179 1 Overrun time cylinder pump P2/P4 in minutes (if P100 > 1) 0-60
P181 5 Minimum cool down DHW temperature in °C (if P100 > 0) 0-15
P182 1 Load adjustment due to temperature fall DHW in °C/10sec. (if P100 > 0) 0-10
P183 65 DHW Anti legionella temperature (if P100<>0 and P122=1) in °C 10-80
P184 7 DHW Anti legionella service timer (if P100<>0 and P122=1) in days 1-30
P185 3:00 DHW Anti legionella time of day (if P100<>0 and P122=1) 0:00-23:50
P190 80 Flow temperature T10 at DHW in °C (using cylinder thermostat) (if P100 > 0) 10-90
P801 0% Local altitude compensation and flue length 0-15%
BurnerAparam
Burner A parameters
When the boiler has 2 heat exchangers Burner B will follow with the same parameters
When the boiler has 2 heat exchangers Burner B will follow with the same parameters
P953
HEX4: 65%
HEX2: 80%
Minimum pwm-level pump (only with modulating pump). 43-100%
Servicechapt.
Service chapters
Choose burner AB, A or B after selecting one of the functions using arrow buttons. Exchanger
symbol will show: AB, A or B
AB-A-B
Throttle 0
Manually burner control.
Press OK, then + and - button to increase/decrease the value (0=off, 1%=low load untill 100%=full
load)
0-100
Airflush 0
Manually fan control
Press OK, then + and - button to increase/decrease the value
0-100
Pumpspeed. 43 Minimum pump speed (only with modulating circulation pump) 43-100%
3-way valve / P2 CH
Manually control of the 3-way valve for DHW.
Only for boilers with DHW via 3-way valve
CH-DHW
(at P2: on-off)
Pump P3 off
Manually control of the system pump P3. (Only when pump is off)
When 'On' pump symbol will be displayed
on-off
Pump P4 off Manually control of the DHW pump P4 on-off
LPG off Manually control of LPG valve (Volt-free) on-off
Fault off Manually control of fault relay for external error signal (Volt-free) on-off
Heat demand off Manually control of heat demand relay for external display heat demand (Volt-free) on-off
Boiler on-off off
Manually control of external heating source. On-off contact for control external heating source (not
visible in case of LPG)
on-off
Boiler address Adjusting/changing boiler address 01-08
Reset Counters Reset of counters after maintenance interval