TC-1 Controller
*** USER'S GUIDE ADDENDUM ***
Night Air Cooling
Firmware Version 3.9
Document Version: 1.0
Page 1: ...TC 1 Controller USER S GUIDE ADDENDUM Night Air Cooling Firmware Version 3 9 Document Version 1 0 ...
Page 2: ...int SP1 specifies the maximum desired space temperature Night Air Mode 1 NA1 uses a second set point SP2 to specify maximum outside air temperature above which fresh air ventilation is inhibited Night Air Mode 2 NA2 uses SP1 and a fixed scale factor against which thermostat differential Dif is multiplied and then subtracted from inside air temperature to dynamically determine when it s appropriate...
Page 3: ...ting equipment IMPORTANT Use only shielded CAT 5 cable to extended the probe cables Ground the cable shield at the controller end only Do not ground the shield at any other location along the bus Do not exceed 75 of total probe cable length Run probe cabling in a bus fashion e g from controller to TP 1 probe and then from the TP 1 to the TP 2 Make all cable splices as close to the probes as possib...
Page 4: ...until either one of the MODE LEDs begins to blink or the word OFF flashes in the SETPOINT window z Press and release the UP or DOWN button until the desired MODE is selected With extended functions EF enabled the controller will present several additional operating modes Use the UP or DOWN button to select the desired Night Air Cooling mode which is indicated as either NA1 or NA2 in TEMPERATURE di...
Page 5: ... desired space temperature and SP2 maximum outside air temperature above which fresh air ventilation will be inhibited should be done independently from each other to establish the desired offset between space temperature and maximum allowable outside air temperature Once this initial temperature offset has been specified an alternate method of adjusting space temperature SP1 can be used that will...
Page 6: ...ting Space Temperature z Press and hold the PGM button z While holding the PGM button depressed use the UP DOWN buttons to adjust the desired space temperature SP1 as shown in the SETPOINT display window Note that when SP1 is adjusted in this manner SP2 is automatically adjusted as needed to maintain the offset specified during intial adjustment Simplified Logic If TP1 SP1 dif space temperature hi...
Page 7: ...on Adjusting Space Temperature z Press and hold the PGM button z While holding the PGM button depressed use the UP DOWN buttons to adjust the desired space temperature SP1 as shown in the SETPOINT display window Simplified Logic If TP1 SP1 dif space temperature higher than desired if TP2 TP1 2 dif Close_Relay1_Contacts ventilate else Close_ Relay2_contacts outside air too hot engage mechanical coo...
Page 8: ...e air temperature Selecting a Probe Display z Press release the PGM button until one of the PROBE indicators begins to blink z Use the UP or DOWN button to select the desired probe Note Upon exiting programming mode the controller will revert back to displaying the temperature of the probe specified by the CP parameter which per this addendum is TP1 or space temperature ...
