Bryan Boilers 250, Triple-Flex 150, & 300, 200 service manual Sound Pressure Levels, Pid

2.2.21CENTRAL HEAT

CONFIGURATION

►► CONFIGURE

►CH - CENTRAL HEAT CONFIGURATION

	Date:	8-4-2010
	Revision:	0
	Form:	2396
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 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	Yes, No, Cancel
Lag

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	Time between hysteresis
(0=Disable	hysteresis	step changes: 0-600
stepping)		seconds

2.2.22SOUND PRESSURE LEVELS

Figure 37 Central Heat Configuration (Setpoint Page)

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.

		Decibel Readings
Model	Front	Rear	Tube	Right
			Side	Side

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