NTI INSTALLATION MANUALS

Part 9 - Controls

Description

Value

Menu

Setting

Default

Sub-Menu

Parameter

-12 - +12 (when 4.2.0 = 0)

See K. Parallel Shift of Reset Curve.

Parallel Shift of Reset Curve

0

-25 - +25 (when 4.2.0 = 1) When the Reset Curve results in a boiler target temperature that is too high or too low (i.e., heats the building too quickly or slowly), Parallel Shift can be used to o set the curve up or down to increase or decrease the boiler target temperature.

NOTE: Adjusting Parallel Shift is only possible when Auto Boost is OFF (4.7.5 = 0).

The Parallel Shift can be adjusted from the home screen using the CH + and - buttons (Figure 59, Item 8).

4 2 3

With the rst press of the CH + or - button, the display shows the current CH target temperature (e.g., 130 o F).

1

AUTO

After a 3-5 second delay, the display begins ashing the current o set (Parallel Shift) setting. Subsequent CH + or - button presses adjusts the o set up or down.

After a few seconds the display shows the new CH target temperature (e.g., 138 o F), then returns to the home screen.

2 if Parameter 4.2.0 = 0 4 if Parameter 4.2.0 = 1

Room Sensor In uence

0 - 20

4 2 4

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 4.2.1 = 2 or 4. 179 4.2.5 sets the allowable boiler operating temperature range for Zone 1 heating, limiting Automatic Temperature Control and manual adjustments from the User Menu. 95 4.2.6 sets the allowable boiler operating temperature range for Zone 1 heating, limiting Automatic Temperature Control and manual adjustments from the User Menu. MAXIMUM Temperature Setting 68 - 179 °F MINIMUM Temperature Setting 68 - 179 °F

4 2 5

4 2 6

4 3 ZONE 1 DIAGNOSTICS 4 3 0 Room Temperature

Read only Read only

Only applicable when using an NTI room sensor

Room Temperature Setpoint

4 3 1 4 3 4

Heat Call

0 = OFF, 1 = ON (Read only)

4 7 ZONE 1 REGULATION PARAMETERS 4 7 5 Auto Boost 5 ZONE 2 PARAMETERS 5 0 ZONE 2 TEMPERATURE SETTINGS 5 0 0 Temperature Day

0 = OFF, 1 = ON

0 See L. Auto Boost.

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

66 Only applicable when using an NTI room sensor

Temperature Night

61

5 0 1

179 Parameter 5.2.0 = 1 120 Parameter 5.2.0 = 0

Fixed Temperature

5 0 2

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

Zone Freeze Protection Temperature

36 - 59 °F

41

5 0 3

5 1 SUMMER/WINTER CHANGEOVER 5 1 0 S/W function activation

0 = OFF, 1 = ON

0

S/W temperature threshold

50 - 86 °F

68

5 1 1

S/W delay time

0 - 300 minutes

60

5 1 2

5 2 ZONE 2 SETTINGS

This parameter determines the starting boiler target temperature when using Basic Temp. Control (5.2.1 = 1)

Temperature Range

0 - 1

1

5 2 0

71