TFTN 085-199 Installation and Operation Manual
81
Table 16-4 CH Setup
–
show Heating Curve
(Applicable to selected zone)
Setting
Parameter* Range/Description
Factory Setting
Max Temp
4.2.5
Max Temperature; see Table 16-1
140°F
Min Temp
4.2.6
Min Temperature; see Table 16-1
95°F
Slope
4.2.2
Heating Curve Slope; see Table 16-3
1.1
Offset
4.2.3
Heating Curve Offset; see Table 16-2
0
Room Influ
4.2.4
Room Sensor Influence; see Table 16-3
2
AUTO Temp Contrl Mode
4.2.1
AUTO Temperature Control Mode; see Table 16-1
Outdoor Temp
Room Temp Simulation
NA
Simulates a room temperature for zone 1, to show the
impact on the heating curve. Only applicable when
using an NTI Room Sensor. (Range = 50-90°F)
70°F
* Parameter numbers starting with 4 are for Zone 1; substitute the 4 with a 5 (for Zone 2); 6 (for Zone 3); 14 (for Zone
4); 15 (for Zone 5) or 16 (for Zone 6) for equivalent respect zone parameter.
Table 16-5 CH Setup
–
General Advanced Settings
(Applicable to all heating zones)
Setting
Parameter Range/Description
Factory
Setting
CH On-
Differential
Temperature
24.21.1
Determines how much the boiler outlet temperature can drop below
target before turning the burner back on. (Range = 0-40°F)
15°F
CH Start
Delay
24.21.5
Sets the delay of the initialization of the burner and SYSTEM & BOILER
pumps after a central heating call is applied. Can be used to give zone
valves an opportunity to fully open. (Range =
Disabled/10sec/90sec/210sec)
Disabled
CH Anti-cycle
Time Mode
24.21.3
Manual
–
burner CH anti-cycle time is set manually via setting CH Anti-
cycle Time.
Automatic
–
the minimum amount of time burner must remain off
between CH burner on cycles is set automatically.
Automatic
CH Anti-cycle
Time
24.21.4
With CH Anti-cycle Time Mode set to Manual, determines the minimum
amount of time the burner must remain off between CH burner on cycles.
(Range = 0-240min)
5 min
CH Setpoint
Ramp-up
24.4.4
Limits the rate at which the boiler setpoint temperature increases. Upon
receiving a CH request the boiler setpoint is limited to the greater of the
minimum setpoint temperature and the current boiler temperature; the
setpoint then increases at a rate equal to this setting, until the normal
setpoint is achieved. Note: a setting of zero disables this function. (Range
= 0-27°F)
0°F/min
Max CH
Power
24.0.3
Establishes the maximum power the burner will operate at for CH
demands. (Range = 0-100%)
100%
Antifreeze
Function
24.20.8
If enabled:
•
when the boiler temp drops below 46°F, the boiler, system and zone
pumps are turned on in 2-minute intervals
•
when the boiler temp drops below 39°F, the burner is operated at min
power for 15 minutes, with switch off/on temperatures of 104/95°F
Enabled
Outdoor
Temp
Correction
24.4.1
Allows the operator to adjust/offset the outdoor temperature reading in
case the reading from the sensor or Internet weather is incorrect. (Range
= -10-10°F)
0°F
CH Boost
Delay
Interval
24.4.2
Sets the time delay between the automatic adjustments of the boiler
target temperature in increments of +/- 7°F. Only applicable when the
AUTO Temperature Control Mode = Basic On/Off
16 min
