DriSteem HUMIDI-TECH DI Installation Guide Page 31
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DRI-STEEM Vapor-logic
3
*OTUBMMBUJPOBOE0QFSBUJPO.BOVBMt1BHF
Wiring on-off humidistats
DRI-STEEM provides two types of on-off control: wall-mounted
humidistat and duct-mounted humidistat. On-off control can also
be achieved using a signal from another source, such as a building
automation system (signal by others). The wiring diagram (located
on the inside of the humidifier control cabinet) shows proper wiring
for these controls.
Wiring modulating humidistats
When using modulating control, the signal from a humidistat
directly controls the amount of output from the humidifier.
The standard modulating humidistat controllers provided by
DRI-STEEM are either duct mounted or wall mounted.
The humidistats are powered by a 21 VDC supply provided by
the Vapor-logic
3
control board. A variable control signal from the
humidistat modulates humidifier operation.
For a pneumatic modulating signal, DRI-STEEM offers a transducer
that accepts a 3 to 20 psi (21 to 138 kPa) pneumatic input range.
Wiring modulating humidity or temperature transmitters
Transmitters provide an analog signal proportional to the
process variable being measured. All transmitters provided by
DRI-STEEM are two-wire devices. (See your wiring diagram for
proper connections.) The humidity transmitters have a range of
0 to 100% RH with an output of 4 to 20 mA. The temperature
transmitter has a range of –20 °F to 160 °F (–29 °C to 71 °C) with a
4 to 20 mA output.
Installation: Wiring detail
OM-2027b
Figure 27-1:
Control humidity transmitter wiring
Place shunt across
“I˝ pins of J14/17
when connecting
a 4-20 mA
control humidity
transmitter. See
Page 13 for more
information about
KVNQFSQJOT
J14/17
0 – 15 VDC
0 – 20 mA
0 – 150 ohm
RIV
OM-4030
Calculation of transmitter % RH
3)
(mA reading) – 4
0.16
Example:
12 mA – 4
3)
0.16
VL3_IOM.pdf 31 11/19/2009 9:11:13 AM
- Vapor-logic 1
- Table of contents 3
- 1SPEVDUPWFSWJFX 5
- Summary of features 6
- Control input signals 7
- board receives a linear 8
- 51NPEVMBUJPO 9
- SSR modulation 10
- 7BMWFBOECVSOFSNPEVMBUJPO 11
- XBUFSNPEFMT 12
- *OTUBMMJOHUIFLFZQBEEJTQMBZ 14
- Figure 11-1: 15
- Figure 13-1: 17
- controller. The 18
- Figure 15-1: 19
- GTS expansion board 19
- 3 main controller 20
- main controller 21
- Installation checklist 22
- Typical installation 23
- (FOFSBMXJSJOHQSPDFEVSFT 24
- (FOFSBMXJSJOHQSPDFEVSFT 25
- Control cabinet connections 26
- 4FOTPSEFWJDFQMBDFNFOUBOE 29
- IVNJEJUZDPOUSPMPWFSWJFX 29
- 8JSJOHTFOTPSEFWJDFT 30
- Installation: Wiring detail 31
- Figure 28-1: 32
- VAV transmitter wiring 32
- Figure 29-1: 33
- Figure 30-1: 34
- Figure 31-1: 35
- YYPOMZ 36
- Important: 37
- Connecting LonTalk 39
- Connecting LonTalk, continued 40
- -PO5BML/FUXPSLWBSJBCMFBOE 42
- Table 39-1: 43
- OWPDPOUJOVFE 44
- OWP%JHJUBM@*0 45
- Introduction 46
- Multiple tank configurations: 47
- 1SJPSJUZHSPVQT 47
- Installation 49
- Multi-tank status screen 50
- 6TJOHUIFLFZQBEEJTQMBZ 51
- Configuring humidifier tanks 52
- Using the keypad 56
- Using the keypad, continued 57
- .FOVTUSVDUVSFPWFSWJFX 58
- Main menu: Idle screen 60
- Idle screen status messages 61
- Main menu: Status screen 62
- Main menu: Alarms screen 64
- Fault messages 65
- Fault messages, continued 66
- Table 63-1: 67
- Set Up menu information 67
- Main menu: Set Up screen 68
- Adjusting set point 69
- 1*%UVOJOH 70
- 1*%UVOJOHDPOUJOVFE 71
- controller. Users 75
- can be field 77
- Table 74-1: 78
- Main menu: Diagnostics screen 82
- Main menu: Reports screen 83
- Start-up checklist 85
- Start-up checklist, continued 86
- Troubleshooting introduction 88
- Troubleshooting guide 100
- Replacement parts 105
- DRI-STEEM Vapor-logic 107
- Two-year Limited Warranty 108
- Extended warranty 108
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