Watts AERCO Edge [ii] Operation Manual page 105

Edge [ii] Controller Operation Manual
SECTION 6 – ADVANCED SETUP
C. If Unit SH Operating Mode = Combination, the Unit DHW Setpoint
parameter appears; specify the setpoint for DHW operation. (Range: 60°F to 180°F)
Figure 6.2.6-3: Unit Application Configuration, Application = SH
D. If Unit SH Operating Mode = Outdoor Reset, the following OAR (outdoor air
reset) parameters appear:
Figure 6.2.6-4: Unit Application Configuration, Application = SH
•
Outdoor Air Temp Sens: Choose the Outdoor Sensor signal type: Network,
Direct, BAS or Off. For all options except Off, the following additional
parameters appear:
o BST Outdoor Temp: A read-only display indicating how the unit
communicates with the Outdoor Air Temp Sensor.
o Warm Weather Shutdown: The threshold outside temperature above which
the unit shuts down. (Range: 30°F to 120°F)
•
OAR Min Outside Temp: Specifies the minimum outside air temperature the
system will read; it interacts with the OAR Max Setpoint. For example, if OAR
Min Outside Temp is set to -5°F and OAR Max Setpoint is 180°F, when the
outside temperature is -5°F or below, the system will supply 180°F.
(Range: -40°F to 140°F, Default = -20°F)
•
OAR Max Setpoint: The maximum allowable setpoint
(Range: 20 or OAR Min Setpoint to 210°F, Default = 190°F)
•
OAR Max Outside Temp: Outdoor Air Reset Maximum Outside Temperature
that the system will operate to. For example: if set to 60°F, the boiler will operate
between 60°F outside temperature and OAR Min Outside Temp setting.
(Range: -40°F to 140°F, Default = 130°F)
•
OMM-139_E 8/25/2020
Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST
Page 105 of 196