NTI Trinity TX Series Installation And Operation Manual page 71

Tx I&O Manual
Controller Replacement Instructions
This section provides important information necessary to successfully replace the boiler controller, NTI P/N
84712, in the event the original controller fails. The replacement controller must be field configured to operate on
the Tx boiler model it is being installed on. This is achieved by adjusting the controller's Appliance Type setting.
Appliance Type – the Appliance Type setting is retained in the boiler controller; the setting determines certain
operating characteristics specific to a particular boiler model, such as combustion blower RPM (i.e. firing
rate); see Table 17-4 for a list of Appliance Types and corresponding boiler models.
Table 17-4 Appliance Type Setting by Boiler Model
Appliance
Model
Number
Tx51 1
Tx81 2
Tx101
3
Tx151
4
Replacement Procedure – the replacement controller is factory set with an Appliance Type setting of zero (0);
upon replacement of the control the display will prompt you to set the appliance type, i.e. "tYPE 0" will
automatically be displayed on the screen (see Notice below). Adjust to the applicable Appliance Type setting
(see Table 17-4) using the UP & DOWN buttons; press the OK button to enter the value. Check the appliance
setting via Installer Menu setting 2-11; make sure it matches the correct boiler model as per Table 17-4. Set
the remainder of the control settings as desired. Verify proper boiler operation for DHW and Central Heat
demands.
If "tYPE 0" does not automatically display upon replacing the controller, the Appliance
Type setting must be adjusted using the "Appliance Selection Method" detailed below.
Appliance Selection Method – to change the Appliance Type setting, perform the following steps:
1. Turn the power off; while holding the UP and DOWN buttons, turn the power on using power switch on the
display console; see Figure 17-9. Continue holding the UP and DOWN buttons until "tYPE 0" is displayed on
the screen, then release the UP and DOWN buttons.
2. Increase the setting by press the UP button. When the correct setting is displayed, see Table 17-4; press the
OK button to enter the value.
3. Wait for a minimum of 1 minute, then cycle the power off and on.
4. Check the appliance setting via Installer Menu setting 2-11; make sure it matches the correct boiler model as
per Table 17-4. Set the remainder of the control settings as desired. Verify proper boiler operation on
Domestic Hot Water and Central Heat demands.
tYPE – indicates that the
Appliance Type setting is
ready to be adjusted.
Step 2b – once correct
Appliance Type setting is
displayed, press OK to
enter the value.
Step 1a – turn power off
Appliance
Model
Number
Tx151C 5
Tx200 6
Tx200C
7
Figure 17-9 Appliance Selection
│Display Menu Guide
Step 2a – set
Appliance Type per
Table 17-4.
Step 1b – while holding the
UP and DOWN buttons, turn
the power on; continue to
hold until tYPE is displayed.
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