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Date: 8-4-2010
Revision: 0
Form: 2396
2.2.21 CENTRAL HEAT
CONFIGURATION
► ► CONFIGURE
► CH - CENTRAL HEAT
CONFIGURATION
Figure 36 Central Heat Configuration (Central Heat Page)
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
Figure 37 Central Heat Configuration (Setpoint Page)
Setpoint source Local
S2 (J8-6) 4-20mA
Setpoint Setpoint for normal
Central Heat modulation:
50 °F to 190 °F
Time of day setpoint Setpoint when Time Of
Day switch is on. 50 °F to
190 °F
Off hysteresis Differential above
setpoint when boiler is
turned off. 2 °F to 5 °F
On hysteresis Differential from setpoint
when boiler is turned on.
2 °F to 30 °F
4 mA water temperature 50 °F to 190 °F
20 mA water temperature 50 °F to 190 °F
Figure 38 Central Heat Configuration (Modulation Page)
Modulation sensor Outlet sensor, Inlet
sensor, S5 (J8-11)
Modulation Rate Source 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
(0=Disable hysteresis
stepping)
Time between hysteresis
step changes: 0-600
seconds
2.2.22 SOUND PRESSURE LEVELS
Sound pressure levels were measured at 4-1/2’
above the floor and 3’ from the boiler at the
front, rear and two sides. See Table 6 for
decibel readings.
27
Decibel Readings
Model Front Rear
Tube
Side
Right
Side