Honeywell S7999B Product Data page 36

S7999B, S7999C SOLA LOCAL OPERATOR INTERFACE
Lead Lag Slave Configuration
Parameters (Hydronic Control Only)
Table 34 displays Lead Lag Slave Configuration parameters.
Fig. 68. Lead Lag slave configuration.
Table 34. Lead Lag Slave
Configuration Parameters.
Parameter
Slave enable Slave
ModBUS slave
Disabled
Slave mode Use first
Use last
Equalize run time
Base load rate 0–6000 rpm
Slave sequence 0–8
order
Demand to firing ___hour ___min ___sec
delay
Fan rate during off 0–12000 rpm
cycle
ModBus port MB1
MB2
No port
ModBus address 0–250
Lead Lag Master Configuration
Parameters (Hydronic Control Only)
Table 35 displays Lead Lag Master Configuration parameters.
Click the Advanced Settings button to see available advanced
parameters as shown in Table 36–44.
65-0303—05
Comment
36
Use the left and right arrows to switch between Modulation,
CH, DHW, Frost Protection, Warm Weather Shutdown,
Algorithms, Rate Allocation, Add stage and Drop stage
parameters.
Fig. 69. Lead Lag master configuration and Advanced
Settings button.
Table 35. Lead Lag Master Configuration Parameters.
Parameter
Master enable Enabled
Disabled
CH setpoint -40 °F to 266 °F (-40 °C to 130 °C)
CH time of day -40 °F to 266 °F (-40 °C to 130 °C)
setpoint
ModBus port MB1
MB2
No port
ModBus address 1–250
Table 36. Lead Lag Master Configuration
Advanced Settings: Modulation Parameters.
Parameter
Modulation backup Lead outlet sensor
sensor Slave outlet sensor average
Disabled
Off hysteresis 0 °F to 234 °F
(-17 °C to 112 °C)
On hysteresis 0 °F to 234 °F
(-17 °C to 112 °C)
Hysteresis step time ___Hour ____Minute _____Second
P gain 0 - 400
I gain 0 - 400
D gain 0 - 400
Comment
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