User guide

1
H263
Programming tool
for Humidistats
Use C263H insert and place it over the C263 programmer for use of
programmer with Humidistats.
CORRESPONDING DISPLAYED VALUES WHEN
CALIBRATING HUMIDISTATS
LED INDICATORS
DEV:
Deviation (Humidity - Setpoint) (DEV)
HUM.:
Humidity reading in the room or in the duct (TEMP)
SETPOINT:
Humidity setpoint (Adjusted or programmed) SETPOINT)
HUM. LIMIT :
Supply high limit humidity reading (POWER LIMIT)
HUM. LIMIT wih Decimal point :
Fraction of supply humidity reading.
OUTPUTS #1,#2:
Output values (0 à 100%) (OUT #1, OUT #2)
OUT. TEMP.:
Outside temperature (OUT #3)
All other indicators are not used.
PROGRAMMING
Push “ORDER CODE” key to access order code AB, use “∧” and “∨” keys to adjust the value. Refer to product literature to
determine desired code. Push “ORDER CODE” key again to access CD, EF and GH. To download the new the order code into
the humidistat, push and hold “PROG.” key for 3 seconds, H263 will turn OFF then ON.
To access “SETUP” push “VIEW” and “∨” simultaneously. First parameter displayed is “Db”, use “∧” and “∨” keys to adjust the
value. Refer to TABLE 1 on the next page for setting options. Push “VIEW” again to go to next parameter. . To download the
new the parameters into the humidistat, push and hold “PROG.” key for 3 seconds, H263 will turn OFF then ON.
For “CALIBRATION” use the AUTOCAL PROCEDURE explained on next page.
H270 HUMIDITY SETPOINT RESET BY OUTSIDE TEMPERATURE
The H270 humidistat has an optional outdoor
temperature sensor. This sensor is used to
reset the humidity setpoint during the cold
season to minimize condensation on windows
and building structures.
When the outdoor temperature falls below the
selected high temperature, parameter HT
(32°F in the example beside), the humidity
setpoint will start to decrease. The lowest
humidity setpoint will be reached at selected
low temperature, parameter LT (-20°F).
The setpoint decrease from original setpoint
down to the lowest setpoint determined by the
parameter rE. In the example beside, rE was
set to 20%, therefore the humidity setpoint
dropped from 45% to 20%.
If you don’t use the outdoor reset feature, put
a jumper between terminals 6 and 9 (supplied
with the humidistat.)
LT = -20°F
OUTSIDE AIR TEMPERATURE
-20°F
Note:
rE, HT, LT
parameters can be changed with C263 programming tool
20%
25%
-40°F
rE
= 20%
USER
SETPOINT
35%
%RH
30% 40%
45%
HUMIDITY SETPOINT RESET BY OUTSIDE TEMPERATURE
HT = 32°F
32°F
-4°F
14°F