Viconics H263 User Manual

H263

Programming tool

for Humidistats

Use C263H insert and place it over the C263 programmer f or 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

HUMIDITY SETPOINT RESET BY OUTSIDE TEMPERATURE

OUTSIDE AIR TEMPERATURE

Note:

32°F

14°F

-4°F

-20°F

-40°F

rE, HT , LT

20%

parameters can be changed with C263 programming tool

= 20%

HT = 32°F

LT = -20°F

25%

30% 40%

35%

%RH

USER

SETPOINT

45%

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, param eter LT (-20°F).

The setpoint decrease from original setpoint down to the lowest setpoint determined by the parameter rE. In the exam ple 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.)

TABLE 1: H263 HUMIDISTAT PROGRAMMING TOOL

CODE VALUES

Db 0 to 40 % R.H. 25% R.H. Dead Band between humidific ation and dehumidification.

SL 30 to 100 % R.H. 85% R.H. Supply Limitation: High humidity limit in the supply duct (H270 only)

hA 0 à 127

it 1 to 99 = 1 TO 99 MINUTES 60 "Integral time" Error integration time.

Lt -40 à +40 °C (-40 à 105 °F) -20 °F

Ht -40 à +40 °C (-40 à 105 °F) 32 °F

rE 1 à 99 % R.H. 20 % R.H.

0 to 199 % (of pr oportional band) 0 = 1.6 % R.H. 1 = 3.2 % R.H. 2 = 6.4 % R.H. 3 = 12.8 % R.H. 4 = 25.6 % R.H. 0 = Humidification 1 = Dehumidification 0 = Humidification 1 = Dehumidification 2 = Without integral 3 = With integral 0 = On/off 1 = 8 minutes 2 = 1 second 0 = On/off 1 = 8 minutes 2 = 1 second 0 = °C 1 = °F

± 13 %

DEFAULT VALUE

100% Differential for output #2": S hift f or output 2 relative to output 1

2= 6.4% R.H.

3 "Control Code"

1 DO NOT CHANGE

DESCRIPTION

Proportional Band

"Output #1" Action for output no 1

"Output #2" Action for output no 2

"Time #1" Time period for out put no 1

"Time #2" Time period for out put no. 2

"Range" Temperature Scale

Calibration ( deviation mode: DO NOT MODIFY: USE AUTOCAL PROCEDURE; FOR H100 TRANSMITTER, USE THE ZERO POTENTIOMETER ON THE TRANSMITTER. "Hardware ass embly" Code r elated to thermostat model and entered at initial setup at the factory.

"Lower temper ature" minimum outside temperature for setpoint reset (model H270 only) "Higher temper ature" maximum outside temperat ure for setpoint reset (model H270 only) "Reset” Minimum humidity value ( % HR ) (model H270 only) Example: rE = 20%. Humidity setpoint will be reset from select ed setpoint to 20%, from Ht to Lt

AIR SUPPLY HIGH LIMIT HUMIDITY SENSOR

The H270 includes a high limit circuit. This allows the use of a second humidity sensor to limit the humidity in the supply air. Input signal goes to

100%

terminals #8 on the humidistat. High limit setpoint is preprogrammed at 85% (parameter SL). It can be readjusted using the H263 service tool.

50%

If you don’t use the high limit feature, connect a 4.7 Meg Ω, ¼ watt resistor between terminals 8 and 10 (supplied with the humidistat.)

Remember: this high limit function is not a safety device. For critical situations, provide installation with normal protections required to ensure a safe operation.

CONTROL OUTPUT LEVEL

SUPPLY HUMIDITY

85%

Proportional high limit override signal.

AUTOCAL PROCEDURE

The programmer is not needed to calibrate the humidistat. Follow instructions below:

1. Measure the room humidity near the Viconics humidistat with an accurate hygrometer.

2. Turn the humidistat set point dial to match the reading of the hygrometer.

Push and hold the Autocal button for more than 3 seconds or until the internal red light turns On and Off.

Be careful when recalibrating the H270. Since the outdoor temperature resets the setpoint, the displayed value on the programmer may be different from the adjusted setpoint. To avoid confusion, put a jumper across the sensor (pins 6 and 9) before doing calibration. Calibrate the humidistat; then remove the jumper.

Viconics Electronics Inc.

9245, Langelier Blvd, St-Leonard, Quebec, Canada H1P 3K9

LIT-H263E-E02.doc

www.viconics.com

sales@viconics.com