Webasto Thermo 90 ST Installation Manual - page 18
Installation
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18
TECC Program 412 and Higher with Thermo 90 ST and Electrical 3-Way Valve
Because an external water heater (Thermo 90 ST) is being installed with a BlueCool Chiller Unit, the TECC Card must be
reprogrammed for proper operation. This step must be completed in order for proper operation of the Thermo 90 ST.
DEEP PROGRAMMING MODE:
Numbering below in ** represent reference numbers in Fig 14.
Setting Code 2:
1. Programming Code 2: With unit on, lower temperature set-point to
59° F (15° C).
2. Turn the system off by pressing the
3. Simultaneously press the
4. Now in deep programming mode, hit the
number
2 will be displayed *15* on the left along with the current
value code to the right *16*. e.g.
2 00
5. To change this value, use the
increase or decrease the value. For c5 confutations, use the
following value:
• Programming at nominal temperature 59°F (15 °C) Code
2
value
00 (C1 and T1 closed in heating mode)
6. To confirm a function change, hit the <
F> button once to proceed to the next category and hit the
button to confirm.
7. Change is successful when the message “
NENO” is displayed.
Setting Code 9:
1. Programming Code 9: With unit on, raise temperature set-point to 84° F (29° C).
2. Turn the system off by pressing the
3. Simultaneously press the
4. Now in deep programming mode, hit the
9 will be displayed *15* on the left
along with the current value code to the right *16*. e.g.
9 03
5. To change this value, use the
confutations, use the following value:
•
Programming at nominal temperature 84°F (29 °C) Code
9 value 03 (C2 and T1 closed in heating mode)
6. To confirm a function change, hit the <
F> button once to proceed to the next category and hit the
button to confirm.
7. Change is successful when the message “
NENO” is displayed.
Setting the Proper Function:
1. To change the function mode: turn the unit on by pressing the
2. Hit the
F will be displayed *15* on the left along with
the current value code to the right *16*. e.g.
F 04
3. To change the value, use the
confutations,
F 04 and F05 will be the only recommended and usable selections. Refer to the descriptions
below to determine which value is correct for the end user.
•
F 04 = Auto Cycle Switching with External Heat Source (AC Heat, Fuel/Water Heater, etc.) - No Reversed
Cycle Valve.
•
F 05 = Heat Cycle Only with External Heat Source Alone.
4. To confirm a function change, hit the <
F> button once to proceed to the next category and hit the
button to confirm.
5. Change is successful when the message “
NENO” is displayed.
For electrical connections between the TECC Card and the Thermo 90 ST, refer to Figures 14, 15, 17, and 18.
Fig. 14 Chiller Control
11
12
16
15
14