To activate a reset type, input all configuratio n information for that rese t type in the Config
table. Then input the reset type number in the SELECT/ENABLE RESET TYPE input line.
1. Reset Type 1 (Requires optional 8-input m odu le) — Automatic chilled water temperature
reset based on a 4 to 20 mA input signal. This type permi ts up to ±30° F (±16° C) of
automatic reset to the chill ed water or br ine temperature s et point, based on the input from
a 4 to 20 mA signal. This sign al is hardwired into the num be r one 8-input module.
If the 4-20 mA signal is ext ernally powered from the 8-input module, the signa l is wired to
terminals J1-5(+) and J1- 6(–). If the signal is to be in ternally powered by the 8-input module
(for example, when usin g variable resistance ), the signal is wired to J1- 7( + ) an d J1-6(–).
The PIC must now be configur ed on the Service2 tabl e to ensure that the approp riate power
source is identified .
2. Reset Type 2 (Requires optional 8-input m odu le) — Automatic chilled water temperature
reset based on a remote tem perature sensor i nput. This typ e permits ±30° F (±16° C) of
automatic reset to the set point based on a temper at ure sensor wired to the num be r one 8-
input module (see wirin g diagrams or certified drawings).
The temperature sen s or m us t be wired to terminal J1-19 an d J1-20.
To configure Reset Type 2, enter the temperature of the remote sensor at th e poi nt where
no temperature reset will oc cur. Next, ente r the temperatur e at which t he full amount of
reset will occur. Then, enter the maximum amount of reset required to operate the machine.