NTI FTVN - Page 69

69
Part 9 - Controls
Menu
Sub-Menu
Parameter
Description Value
Default
Setting
2 10 5 CH O Dierential Temperature 4 - 36
o
F 11
Determines how much the boiler
outlet temperature can go over
target before turning the burner
o.
4 ZONE 1 PARAMETERS
4 0 ZONE 1 TEMPERATURE SETTINGS
4 0 0 Temperature Day 50 - 86 °F 66
Only applicable when using an
NTI room sensor
4 0 1 Temperature Night 32 - 86 °F 61
4 0 2 Zone Fixed Temperature
86 - 179 °F 179 Parameter 4.2.0 = 1
68 - 122 °F 120 Parameter 4.2.0 = 0
4 0 3 Zone Freeze Protection Temperature 36 - 59 °F 41
Only applicable when using an
NTI room sensor - Changes all
zones
4 1 SUMMER/WINTER CHANGEOVER
4 1 0 S/W function activation 0 = OFF, 1 = ON 0
4 1 1 S/W temperature threshold 50 - 86 °F 68
4 1 2 S/W delay time 0 - 300 minutes 60
4 2 ZONE 1 SETTINGS
4 2 0 Temperature Range
0 = 68 - 122°F (low temperature)
1 = 86 - 179°F (high temperature)
1
4 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 27 and F. Type of
Temperature Control for details.
4 2 2
Slope of Outdoor Reset Curve
0.2 - 0.8 (when 4.2.0 = 0) 0.6 (low temperature)
0.4 -3.5 (when 4.2.0 = 1) 1.3 (high temperature)
Outlet temperature
Low temperature High tenperature
Outside temperature
Setpoint of the
room temperature
°C
°C
73
73
70
70
66
66
86
77
50
32
104
122
140
158
176
194
°F
4150596877
3.5
3.0
2.5
2.0
1.8
1.5
1.3
0.8
1.0
0.6
0.4
32 23 14 5 -4 -13 °F
0.8
0.6
1.0
0.4
0.2
The greater the slope, the
quicker the target temperature
rises as the outdoor temperature
decreases. Applicable when 4.2.1
= 3 or 4.
See J. Slope of Outdoor Reset
Curve.