Bryan Boilers & 300 ユーザーズマニュアル

 

Date:  

8-4-2010 

 

Revision: 0 

 

Form:  

2396

 

 

 

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: 
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

 

 

 

 

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

 

 

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