15
65-0315—02
Central Heat Parameters
(R7910 Hydronic Control Only)
Table 7 displays Central Heat Hydronic Control configuration
parameters.
Fig. 31. Central Heat hydronic configuration.
Table 6. System Identification Information.
Status
Comment
Product Type
Type of product that the burner is
OS Number
Model number associated with burner
Software Version
Version of software running in the
R7910 or R7911
Date Code
Date when R7910 or R7911 was
assembled
Application Revision Version of application data in the
R7910 or R7911
Safety Revision
Revision of safety data in the R7910
or R7911
Table 7. Central Heat Hydronic
Configuration Parameters.
Parameter
Comment
CH enable
Disable or Enable Central Heating
Loop
Demand switch
Sensor for Central Heat demand:
Sensor only
Sensor & STAT terminal
Sensor & Remote Stat
LCI & Sensor
Outdoor reset
Enabled
Disabled
CH has priority over
Lead Lag
Yes, No, Cancel
Setpoint source
Local
S2 (J8-6) 4-20mA
Setpoint
Setpoint for normal Central Heat
modulation:
32 °F to 250 °F (0 °C to 120 °C)
Time of day setpoint Setpoint when Time Of Day switch is
on. 32 °F to 250 °F (0 °C to 120 °C)
Off hysteresis
Differential above setpoint when boiler
is turned off.
2 °F to 234 °F (-16 °C to 112 °C)
On hysteresis
Differential from setpoint when boiler
is turned on.
2 °F to 234 °F (-16 °C to 112 °C)
4 mA water
temperature
-40 °F to 266 °F (-40 °C to 130 °C)
20 mA water
temperature
-40 °F to 266 °F (-40 °C to 130 °C)
Modulation sensor
Outlet sensor, Inlet sensor, S5 (J8-11)
Modulation Rate
Sensor
Local
P-gain
Gain applied for the P portion of the
PID equation
0-400
I-gain
Gain applied for the I portion of the
PID equation
0-400
D-gain
Gain applied for the D portion of the
PID equation
0-400
Hysteresis step time Time between hysteresis step
changes: 0-600 seconds (0=Disable
hysteresis stepping)