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Using the A1-A2-A3 relay to remotely control
The "A" Relay can be programmed via the internet to
remotely switch a load such as lighting.
Wire the load such that the A relay is in the "normal"
position. This will keep the load ON when the e-Stat
A relay is powered off. The web program logic will as-
sume it is wired this way.
To ensure the stat is wired correctly, the state of the
relay can be toggled using the following steps:
Press and hold the "READ SENSOR" then "DOWN"
button uninterrupted for 10 seconds. Press the up or
down button until you reach screen #7, which is indi-
cated by the fl ashing number. Press the check button
to momentarily change the state of the relay. When
fi nished testing, press "READ SENSOR" to exit this
mode.
WARNING! FOR CONNECTION TO CLASS 2
CIRCUIT ONLY. DO NOT EXCEED 1 AMP (MAX)
@ 24VAC.
A1-A2-A3 DRY CONTACT CLOSURE
Not
S upply
Used
Air
S ensor
Tem perature
(& Hum idity )
Appendix A
an auxiliary load.
WIRING DIAGRAM
Non-twisted Pair #18 AWG Wire
500 feet (maximum)
(not supplied)
A1-A2-A3 Relay: Normal
position indicated.
A
A
A
Contacts reverse during
1
2
3
Unoccupied (night) mode
Rem ote
Or, via OFF signal from
Room
website.
1 Amp
S ensor
Dry contacts
(Max) @
are isolated .
24VAC
23
May be
used for
night shutdown
of dampers or
other equipment
A1-A2 =
Normally Open
(N.O) Contacts
A2-A3 =
Normally Closed
(N.C) Contacts
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