NTI INSTALLATION MANUALS

Part 9 - Controls

Description

Value

Menu

Setting

Default

Sub-Menu

Parameter

Determines how long a CH or DHW demand can last before the priority is switched. First priority is with DHW. A value of 0 keeps the priority with DHW inde nitely. Determines how much the boiler outlet temperature can go over target before turning the burner o .

2 10 4

CH/DHW Shifting Priority Timer

0 - 1440 minutes

45

2 10 5

CH O Di erential Temperature

4 - 36°F

11

2 10 6

CH-DHW Enable the antihammer function

0 = OFF, 1 = ON

0

To disable antifreeze function, set 2.10.7 = 1

2 10 7

Antifreeze Disable Function

0 = OFF, 1 = ON

0

4 ZONE 1 PARAMETERS 4 0 ZONE 1 TEMPERATURE SETTINGS 4 0 0 Temperature Day

50 - 86 °F 32 - 86 °F 68 - 179 °F 68 - 179 °F

66 Only applicable when using an NTI room sensor

4 0 1

Temperature Night

61

179 Parameter 4.2.0 = 1 120 Parameter 4.2.0 = 0

4 0 2

Zone Fixed Temperature

Only applicable when using an NTI room sensor - Changes all zones

4 0 3

Zone Freeze Protection Temperature

36 - 59 °F

41

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

This parameter determines the starting boiler target temperature when using Basic Temp. Control (4.2.1 = 1)

4 2 0

Temperature Range

0 -1

1

0 = Fixed Outlet Temperature 1 = Basic Temp. Control 2 = Indoor Temp. Reset 3 = Outdoor Temp. Reset 4 = Indoor and Outdoor Temp. Reset

See Table 29 and F. Type of Temperature Control for details.

4 2 1

3

Type of Temperature Control

Slope of Outdoor Reset Curve

0.2 - 3.5

1.3

194 °F

1.3

1.5

1.0

1.8

2.0

2.5

3.5

3.0

176

0.8

158

The greater the slope, the quicker the target temperature rises as the outdoor temperature decreases. Applicable when 4.2.1 = 3 or 4.

0.6

140

0.4

122

4 2 2

0.2

104

86 95

Setpoint of the room temperature °F 73 70 66

See J. Slope of Outdoor Reset Curve.

Outlet temperature

77

50

32

77 68 59 50 41

32 23 14 5 -4 -13 °F

Outdoor temperature

75