Honeywell S7999D1048 - Page 65

S7999D1048 COMBUSTION SYSTEM OPERATOR INTERFACE DISPLAY
65 65-0321—01
Setpoints:
Optimal supply water temperature (0-300°F)
APPLICATION NOTE
Application: Thermal Shock
Description: Modulate a hydronic mixing valve (or pump) to maintain an optimal boiler supply water
temperature.
M24240
FIRING RATE
MOTOR
INTERFACE
UDC
CONTROLLER
MODBUS COMMUNICATION
HONEYWELL S7810M
RTD SENSOR
100 OHM
ALARM (LOW
INLET TEMP)
L1
D+
+
-
+
-
R
D-SHIELD
26
27
25
21
19
17 1816 9
8
7
L2
L1
G
C A B
L1
L2
Digital Inputs: None Digital Outputs: Optimal Temperature Alarm
(ON when below alarm
setpoint, OFF when at or above
alarm setpoint)
Analog Inputs: Water supply sensor
temperature (0-300°F)
(4-20mA)
Analog Outputs: Proportional modulation (4-
20mA) to control actuator for
mixing valve. Modulation based
on optimal temperature
setpoint.
Application File:
shock01.nge
Range
0–300°F
Controller Model
DC2500-CE-200R-200-00000-00-0
Algorithm:
CTRALG
PIDA
TIMER
DIS
Output:
OUTALG
CURRENT
Input 1:
IN1TYP
100L
IN1 HI
300