Venstar T1900 - Manual (Page 93)

PROG JUMPER SETTING
If the jumper for MISC1, MISC2, or MISC3 is set to PROG,
terminal on the backplate will control a pilot relay or other accessory. the corresponding MISC screw
Page 21.3
The 3rd Stage of Heat is turned on when:
(A) The 1st and 2nd stages have been on for the time required (steps 28
and 29, page 14.6). It is adjustable from 0-60 minutes and the default
is two minutes.
(B) The temperature from the setpoint is equal to or greater than: the set-
point plus the 1st stage deadband (step #25, 14.5), plus the 2nd stage
deadband (step #26, 14.5) plus the 3rd stage deadband (step #27,
14.5). This 3rd stage deadband is adjustable from 0-10 degrees and
the default is two degrees.
W3 JUMPER SETTING
If the jumper for MISC1, MISC2, or MISC3 is set to W3, the corresponding MISC screw terminal
on the backplate will control a third stage of heat.
Explanation of Jumper Settings
And
Heat
Setpoint
Cool
Setpoint
Deadband Deadband Deadband Deadband Deadband
db 1 db 1 db 2 db 2 db 3
(adj. 1-6 ) (adj. 0-10 ) (adj. 0-10 ) (adj. 0-10 ) (adj. 1-6 )
1st Stage
turn on
2nd Stage
turn on
3rd Stage
turn on
1st Stage
turn on
2nd Stage
turn on
Heating Cooling
TEMPERATURE DECREASE INCREASE
W3 MULTI-STAGE OPERATION EXPLAINED - Page 14.4
This jumper setting allows the MISC outputs to control a pilot relay by time,
temperature, or a signal from the Internet/Phone. The following are three
possible scenarios:
By Time: A device that requires a start and stop time. For example, an
exterior lighting system that needed to be energized every day between
the hours of 8pm and 1am.
By Temperature: An exhaust fan that needs to energize whenever
the temperature from RS1 rises above 90 degrees F.
By Remote: Remotely arming a security system through the web or phone.
PROGRAMMABLE OUTPUT - SECTION 15
21