NTI TRX199 - Page 71

71
Part 9 - Controls
Menu
Sub-Menu
Parameter
Description Value
Default
Setting
5 2 1 Type of Temperature Control
0 = Fixed Outlet Temperature
1 = Basic Temp. Control
2 = Indoor Temp. Reset
3 = Outdoor Temp. Reset
4 = Indoor and Outdoor Temp.
Reset
3
See Table 29 and F. Type of
Temperature Control for details.
5 2 2
Slope of Outdoor Reset Curve
0.2 -0.8 0.6 (low temperature)
0.4 - 3.5 1.3 (high temperature)
See graph and description of Parameter 422.
5 2 3
Parallel Shift of Reset Curve
-12 - +12 (when 4.2.0 = 0)
0
-25 - +25 (when 4.2.0 = 1)
See description of Parameter 423.
5 2 4
Room Sensor Inuence 0 - 20
2 if Parameter 4.2.0 = 0
4 if Parameter 4.2.0 = 1
Adjusts the inuence of room temperature on target boiler temperature - a higher setting causes a greater increase to the boiler
target temperature as the indoor temperature drops below room setpoint. Only applicable when using an optional NTI Room
Sensor and when 5.2.1 = 2 or 4.
5 2 5
MAXIMUM temperature setting
86 - 179 °F 179 if parameter 5.2.0 = 1
68 - 122 °F 120 if parameter 5.2.0 = 0
5.2.5 sets the allowable boiler operating temperature range for Zone 2 heating, limiting Automatic Temperature Control and
manual adjustments from the User Menu.
5 2 6
MINIMUM temperature setting
86 - 179 °F 120 if parameter 5.2.0 = 1
68 - 122 °F 80 if parameter 5.2.0 = 0
5.2.6 sets the allowable boiler operating temperature range for Zone 2 heating, limiting Automatic Temperature Control and
manual adjustments from the User Menu.
5 3 ZONE 2 DIAGNOSTICS
5 3 0 Room Temperature Read only
Only applicable when using an
NTI room sensor
5 3 1 Room Temperature Setpoint Read only
5 3 4 Heat Call 0 = OFF, 1 = ON (Read only)
5 7 ZONE 2 REGULATION PARAMETERS
5 7 5 Auto Boost 0 = OFF, 1 = ON 0
See description of Parameter
475.
6 ZONE 3 PARAMETERS
6 0 ZONE 3 TEMPERATURE SETTINGS
6 0 0 Temperature Day 50 - 86 °F 66
Only applicable when using an
NTI room sensor
6 0 1 Temperature Night 32 - 86 °F 61
6 0 2 Fixed Temperature
86 - 179 °F 179 Parameter 6.2.0 = 1
68 - 122 °F 120 Parameter 6.2.0 = 0
6 0 3 Zone Freeze Protection Temperature 36 - 59 °F 41
Only applicable when using an
NTI room sensor - Changes all
zones
6 1 SUMMER/WINTER CHANGEOVER
6 1 0 S/W function activation 0 = OFF, 1 = ON 1
6 1 1 S/W temperature threshold 50 - 86 °F 68
6 1 2 S/W delay time 0 - 300 minutes 60
6 2 ZONE 3 SETTINGS
6 2 0 Temperature Range
0 = 68 - 122°F (low temperature)
1 = 86 - 179°F (high temperature)
1
6 2 1 Type of Temperature Control
0 = Fixed Outlet Temperature
1 = Basic Temp. Control
2 = Indoor Temp. Reset
3 = Outdoor Temp. Reset
4 = Indoor and Outdoor Temp.
Reset
3
See Table 29 and F. Type of
Temperature Control for details.