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)
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