Emerson iPro.Genius - Page 6

vi • Discharge Air Controller (DAC) Manual 026-1727 Rev 3
7.4.3.3. Heating OAT Lockout ...................................................................................................................................................... 18
7.5. FAN CONTROL ............................................................................................................................................................ 18
7.5.1. CAV Mode ........................................................................................................................................................... 19
7.5.1.1. Variable-Speed Fan Control in CAV................................................................................................................................ 19
7.5.1.2. Single Speed with Bypass Damper ................................................................................................................................... 19
7.5.1.3. Variable-Speed Fan Control in VAV................................................................................................................................ 19
7.5.2. Fan Proofing ....................................................................................................................................................... 20
7.6. D
EHUMIDIFICATION CONTROL.................................................................................................................................... 20
7.6.1. Enabling Dehumidification ................................................................................................................................. 20
7.6.1.1. Dehumidification Setpoint ................................................................................................................................................ 20
7.6.1.2. Dehumidification by Dewpoint ........................................................................................................................................ 20
7.6.1.3. Low Temperature Lockout ............................................................................................................................................... 20
7.6.2. Dehumidifying Using Cool Stages ...................................................................................................................... 20
7.6.2.1. Digital Scroll Operation During Dehumidification .......................................................................................................... 21
7.6.3. Reheat Output...................................................................................................................................................... 21
7.6.3.1. Supply Air Setpoint Reset................................................................................................................................................. 21
7.6.4. Primary Heat Used as Reheat............................................................................................................................. 21
7.6.5. Return Air Bypass Damper ................................................................................................................................. 21
7.6.5.1. Return Air Damper During Dehumidification.................................................................................................................. 21
7.7. OUTSIDE AIR CONTROL .............................................................................................................................................. 22
7.7.1. Indoor Air Quality............................................................................................................................................... 22
7.7.2. Make-up Air Control ........................................................................................................................................... 22
7.7.3. Economizer Control ............................................................................................................................................ 22
7.7.3.1. Operation of Two-Position Dampers During Economization .......................................................................................... 22
7.7.3.2. Operation of Variable-Position Dampers During Economization .................................................................................... 22
7.7.3.3. Economization Enabling Strategy .................................................................................................................................... 23
7.7.4. Smoke Detection.................................................................................................................................................. 23
7.7.5. Priority When Economization, CO2 Control, and Make-up Air are Used Together.......................................... 23
7.7.6. Return Damper Control ...................................................................................................................................... 23
7.8. 6.10 R
EVERSING VALVE CONTROL ............................................................................................................................ 24
7.9. S
TANDALONE FUNCTIONALITY................................................................................................................................... 24
7.10. C
ONTROL TEMPERATURE SENSOR FAILURES ........................................................................................................... 24
7.11. DAC S
ENSOR CALIBRATION OFFSETS IN E2............................................................................................................ 25
8 E2 SETUP ..................................................................................................................................................................... 27
8.1. N
ETWORK CONNECTION TO E2 ................................................................................................................................. 27
8.1.1. Setup Network Ports............................................................................................................................................ 28
8.2. A
DD AND CONNECT DACS......................................................................................................................................... 28
8.3. V
IEWING THE DAC STATUS SCREEN ......................................................................................................................... 30
9 CONNECTIONS .......................................................................................................................................................... 31
9.1. T
HE DAC CONNECTOR DESCRIPTIONS ..................................................................................................................... 31
9.2. T
ERMINAL NUMBER DESCRIPTIONS ........................................................................................................................... 32
9.3. T
ECHNICAL SPECIFICATIONS ...................................................................................................................................... 35
9.3.1. Analog Inputs ..................................................................................................................................................... 35
9.3.2. Digital Inputs ...................................................................................................................................................... 35
9.3.3. Analog Outputs ................................................................................................................................................... 36
9.3.4. Digital Outputs ................................................................................................................................................... 36
9.4. W
IRING ....................................................................................................................................................................... 37
10 USING THE VISOGRAPH....................................................................................................................................... 38
10.1. V
IEWING STATUS...................................................................................................................................................... 38
10.1.1. Input Status........................................................................................................................................................ 38
10.1.2. Output Status..................................................................................................................................................... 38
10.1.3. VAV Fan Status ................................................................................................................................................. 38