Noritz NRCB180DV - Page 65

65
Below charts show simultaneous operation is available or not. By default, the Combi Boiler has been set to

adjustment allows the Combi Boiler to operate simultaneous more flexible.
If [I:01_HCt] is set to [2:or] or [3:EC], the Combi Boiler operates simultaneously DHW and Heating automatically
by increasing the heating supply temperature.
<Relationship between simultaneous operation and setting temperatures on below Charts>
[To expand simultaneous range]
Setting
Temperature
Mark on
Charts
DIP Switch #2
Setting
simultaneous operation
Available or Unavailable
DHW Heating
120°F 170°F
OFF Available
ON Available
130°F 90°F
OFF Unavailable
ON Unavailable
110°F 130°F
OFF Unavailable
ON Available
Here
* DIP switch #2 turned on.
[DIP Switch Adjustment]
Disconnect power and turn ON DIP switch #2 if

simultaneous operation.
Chart2
Chart4
Heang seng temperature [°F (°C)] Heang seng temperature [°F (°C)]
Heang seng temperature [°F (°C)]
Heang seng temperature [°F (°C)]
80
90
100
110
120
130
140
150
160
170
180
(82)
(77)
(71)
(66)
(27)
(32) (38) (43) (49) (54) (60)
(32)
(38)
(43)
(49)
(54)
(60)
80
90
100
110
120
130
140
150
160
170
180
(82)
(77)
(71)
(66)
(27)
(32)
(38)
(43)
(49)
(54)
(60)
80
90
100
110
120
130
140
150
160
170
180
(82)
(77)
(71)
(66)
(27)
(32)
(38)
(43)
(49)
(54)
(60)
90 100 110 120 130 140
80
90
100
110
120
130
140
150
160
170
180
(82)
(77)
(71)
(66)
(27)
(32) (38) (43) (49) (54) (60)
(32)
(38)
(43)
(49)
(54)
(60)
90 100 110 120 130 140
DHW seng temperature [°F (°C)] DHW seng temperature [°F (°C)]
DHW seng temperature [°F (°C)] DHW seng temperature [°F (°C)]
(32) (38) (43) (49) (54) (60)
90 100 110 120 130 140
(32) (38) (43) (49) (54) (60)
90 100 110 120 130 140
Chart1
䚷
䚷
䚷
2.0 GPM (7.6 L/min)
107°F (42°C)
40°F (4.4°C)
Faucet Flow Rate
Faucet Water Outlet Temp
DHW Water Inlet Temp
䚷
䚷
䚷
2.5 GPM (9.5 L/min)
107°F (42°C)
40°F (4.4°C)
Faucet Flow Rate
Faucet Water Outlet Temp
DHW Water Inlet Temp
Chart3
䚷
䚷
䚷
2.0 GPM (7.6 L/min)
107°F (42°C)
50°F (10°C)
Faucet Flow Rate
Faucet Water Outlet Temp
DHW Water Inlet Temp
䚷
䚷
䚷
2.5 GPM (9.5 L/min)
107°F (42°C)
50°F (10°C)
Faucet Flow Rate
Faucet Water Outlet Temp
DHW Water Inlet Temp
* The “③” area is unavailable for simultaneous operation.
* When DHW setting temperature is under 107°F (42°C), Faucet Water Outlet Temp equals DHW setting temperature.
①
②
③
①
②
③
⋇
①
②
③
①
②
③
<Relationship between simultaneous operation and temperature settings>
Installer Mode (Parameter Settings)