Service manual

26
9.5 MODE 3: DEDICATED DOMESTIC HOT WATER OPERATION: ADJUST DISPLAY
From the Home display;
1) Press simultaneously to view the following parameters:
Display
Parameter
Name
Parameter Description
Parameter
Range
Mode
Operating mode for the boiler.
NOTE: A complete description of
each mode can be found in
section 8.4 Modes of Operation in
this manual.
1 to 8
Default = 1
Boiler Target
Temperature
To provide a target setpoint for
the heating system. Setpoint is
controlled to the inlet sensor
OFF, 70 to
220
o
F
(OFF,21 to
104
o
C)
Default = 120
o
F
(82
o
C)
DHW Target
Temperature
To provide a target setpoint for
the DHW system. Setpoint is
controlled to the DHW sensor
OFF, 70 to
190
o
F
(OFF, 21 to
88
o
C)
Default = 140
o
F
(54
o
C)
DHW
Differential
To provide a modulation rate
above and below the DHW
Target Temperature. For
example, if the value is 10
o
F and
the DHW Target Temperature is
160
o
F the boiler will begin to
modulate at 155
o
F and shut off at
165
o
F.
2 to 10
o
F
(1 to 5
o
C)
Default = 3
o
F
(1
o
C)
Differential
Temperature
To provide a modulation rate
above and below the Boiler
Target temperature. For example,
if the value is 10
o
F and the Boiler
Target is 160
o
F the boiler will
begin to modulate at 155
o
F and
shut off at 165
o
F.
Au, 2 to 42
o
F
(Au, -17 to 5
o
C)
Default = Au
Pump Delay
Boiler post pump time after
burner has shut off, in seconds.
OFF, 0:20 to
9:55 min, On
Default = 1:00
min
Temperature
Units
Select the desired unit of
measurement
o
F,
o
C
Default =
o
F