Condair Chr-na Digital Room Humidistat With Display Instruction Manual

CHR-NA Digital Room Humidistat with Display

Digital Room Humidistat with Display

The Condair digital humidistat is a device that measures and
controls the humidity level in a room. It comes with an on/off
digital wall humidistat that can be installed easily with the help
of the installation instructions provided below. The device also
allows the user to change and control various parameters according
to their preferences.

Installation Instructions

1. Open the screw of the housing and remove the mounting plate
   with the connecting unit.
2. Connect wires of the connection cable to the terminals
   according to the wiring diagram.
3. At the place of location fix mounting plate (plastic screw
   facing downwards) with two screws to the flush-mounting or
   wall-mounting box (see dimension drawing).
4. Carefully snap housing onto the mounting plate and fix it with
   the screw (do not tighten screw too much).

Usage Instructions

Calibration

To calibrate, press the UP key until you see the calibration
value and tool symbol on the display. Use the UP/DOWN buttons to
calibrate and then press the Save calibration button to save the
calibration. The tool symbol will disappear after calibration is
saved. Note that disable inputs will not be shown on the
display.

Changing Parameters

1. Press the < >/< > button simultaneously for three
   seconds. The display will show firmware version and revision
   number.
2. Press the < > button to start login. The small digits
   show CODE.
3. Select correct code (password) using < > and < >
   buttons. Note: Code to access user parameters is 0009. The access
   codes are fixed and cannot be changed.
4. Press the < > button after selecting the correct
   code.
5. Once logged in with 0009, the user/display parameters are
   displayed immediately.
6. Select the parameters with the < > or < > button.
   Change a parameter by pressing the < > button. The symbol is
   displayed to indicate that the parameter may be modified. Use <
   > or < > button to adjust the value.
7. After you are done, press < > button to save the new
   value and return to the selection level (symbol disappears after
   selection is saved). Pressing < > button without pressing
   < > button will discard the value and return without
   saving.
8. Press the < > button to leave the menu. The unit will
   return to normal operation if no button is pressed for more than 5
   minutes.

User Parameters (Password 0009)

Control Parameters (Password 0241)

Note: Only experts should change these settings! See user
parameter for login procedure!

CHR-NA – Digital Room Humidistat with Display

On/Off Digital Wall Humidistat Installation Instructions

This document covers the operation and installation instructions for the following Condair digital humidistat:

Kit No. Component No. Description

2597934 2548731

On/Off Digital Wall Humidistat

1 ­ Mounting and Installation
Location: Install the Condair CHR-NA in a protected and easy accessible place at least 1.5 m above the floor to the wall (mounting on flush-mounting or wall-mounting box). Observe the following placement notes: ­ Do not place Condair CHR-NA in niches, behind, curtains, etc. ­ Do not place the Condair CHR-NA near heat sources, within the area with direct air draft or direct sunlight.
Installation:
Refer to installation overview in section 2. 1. Open the screw of the housing and remove the mounting plate with the connecting unit. 2. Connect wires of the connection cable to the terminals according to the wiring diagram. 3. At the place of location fix mounting plate (plastic screw facing downwards) with two screws to the flush-mount-
ing or wall-mounting box (see dimension drawing). 4. Carefully snap housing onto the mounting plate and fix it with the screw (do not tighten screw too much). Note: We recommend using 18-gauge wire, and maximum <100 ft distance from the unit.

2549736-F EN 2304

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2 ­ Installation overview

A mm (inch)
16(0.6) 32 (1.2)

B
73 (2.9)

CHR-NA 2597934/2548731

113 (4.5)

15 (0.6) 83 (3.25) +/- 5 (0.2)

C
58 (2.3)
E
1 2 34 5678

58 (2.3)

D
50 (2.0)
1 2 34 5678

2 1

0V / GND 24V DO1 DO1 DO2 DO2 RT RT

12345678 6 (0.02)

1: 0V / GND 2: 24 V AC/DC ±10% 3: DO1 4: DO1 5: DO2 6: DO2 7: RT 8: RT

© Condair Group AG, Switzerland

For Wiring Schematic:
Get the Condair Sensor Connect App

70-000259/20201214

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3 ­ Wall Humidistat LCD Display
Actual humidity in %rH
Set humidity setpoint in %rH

°C/°F

%

Output active Control buttons

Buttons /

Operation
press long
press briefly press long press briefly press briefly press long

Fig. 1: Wall Humidistat LCD Display

Function Switching On and Off ­­­ Switching between °C and °F Adjusting set point value Shows %rH value Offset settings

4 ­ Configuration
1. Using keypad, set specified humidity. For general health and comfort, a humidity setting of 50% is recommended. 2. See Table 3 for outdoor setback configuration if optional outdoor temperature sensor is supplied (P/N 2520263
or 2553858).

5 ­ Error Messages

Err 1:

Sensor element in the device is not properly inserted or defective. Insert the sensor element correctly or replace it.

Err2, 3 & 4: Hardware or memory problem. Replace device.

6 ­ Sensor Calibration
Sensor inputs can be calibrated if needed

Press > 2 sec. UI and its value is displayed.

Press

: Calibration value and tool symbol is displayed, UP/DOWN to calibrate,

Press : Save calibration, tool symbol disappears.

Press UP key again to step through the next active input Note: disable inputs will not be shown

75% UI 1
0.0% ..UI 1

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7 ­ Setting Parameters to Configure the Controller
The control operation is defined by parameters set using the standard operation terminal. There are two levels: ­ User/display parameters (password 0009) ­ Control parameters (password 00241)
How to change the parameters: 1. Press < >/< > button simultaneously for three seconds. The display will show firmware version and revision
number.
2. Press the < > button to start login. The small digits show “CODE”. 3. Select correct code (password) using < > and < > buttons.
Note: Code to access user parameters is “0009”. The access codes are fixed and cannot be changed. 4. Press the < > button after selecting the correct code. 5. Once logged in with “0009”, the user/display parameters are displayed immediately.
6. Select the parameters with the < > or < > button. Change a parameter by pressing the < > button. The symbol is displayed to indicate that the parameter may be modified. Use < > or < > button to adjust the value.
7. After you are done, press < > button to save the new value and return to the selection level (symbol disappears after selection is saved). Pressing < > button without pressing < > button will discard the value and return without saving.
8. Press the < > button to leave the menu. The unit will return to normal operation if no button is pressed for more than 5 minutes.

User Parameters (Password 0009)

Table 1: User Parameters

Parameter UP 00 UP 01 UP 02
UP 03 UP 04

Description
Enable change of operation modes
Enable change of setpoints
State after power failure: 0 = Switched OFF, 1 = Switched ON, 2 = state before power failure
Celsius or Fahrenheit, Select ON for Fahrenheit, OFF for Celsius Select type of content for large digits (00= OFF): 01 = Setpoint 02 = Humidity Sensor 03 = External Temperature Sensor

Range ON, OFF ON, OFF
0, 1, 2
ON, OFF 00…03

Default ON (Enabled) ON (Enabled)
2
OFF (Celsius) 01

Control Parameters (Password 0241) Note: Only experts should change these settings! See user parameter for login procedure! Table 2: Output Configuration

Parameter CP 00 CP 01 CP 02
CP 03

Description
Minimum setpoint limit in humidification mode Maximum setpoint limit in humidification mode Start delay for fans (Time the fan runs before control output starts) Stop delay for fan (Time the fan keeps running after control output stops)

Range 0..100% 0..100% 0…255 s
0…255 s

Default 10% 90% 10 s
90 s

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Table 3: Temperature Setback Configuration ­ *For humidity control only

Parameter Description

CP 04

Enable temperature setback OFF = Temperature set back is disabled ON =Temperature setback is enabled

CP 05

Setpoint limit at full setback

CP 06

Lower temperature limit: Outside temperature with maximum setback The setback will be equal to the minimum setpoint limit

CP 07

Upper temperature limit: Outside temperature at begin of setback

CP 08

Number of seconds taken into account to calculate the average input signal Low value = fast response High value = slow response

Range ON, OFF
0..100 % -40…60°C -40…160°F
-40…60°C 40…160°F
0…100

Default OFF
20 % -30 °C (-22°F)
0 °C (32°F) 30

8 ­ Product Specification

Power Voltage Signal input Signal Output
Environment General

Operating voltage Power consumption Terminal connections
Measuring element Measuring range Hysteresis Digital signal output Switching type Switching power Admissible switching voltage
Operation: Climatic Conditions Temperature Humidity Housing material Mounting plate Weight (including packing)

24 V AC/DC ± 10 %, 50/60 Hz Max. 2 VA For wires 0.34…2.5 mm2 (AWG 24…12)
Capacitive measuring element 0…100 % rH ± 1 % rH
DO1 Relay, normally open 2(1.2) A 0..250 VAC / 0…24 VDC
IEC 721-3-3 Class 3 K5 0…50°C (32…122°F) <95 % rH not condensing PC and ABS Galvanized steel 260 g (9.2 oz)

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9 ­ Wiring Diagrams
Wiring diagram CHR-NA for RS, EL, GS, US and SE

CHR-NA
On/Off Wall Humidistat 2548731

1 234 567 8

0V / GND 24V AC/DC DO1 DO1 DO2 DO2 RT RT

EL / RS / GS / US / SE 1 2 3 4 5 6 7 8 9 10 11 12

24VAC Safety Loop
GND CH1 CH2 GND

Wiring diagram CHR-NA for DL and ME

ME / DL
Driver board ME / DL

24/10 V

X1

TMP

HUM

GND

24V E

Enable

X16

CHR-NA
On/Off Wall Humidistat 2548731
1 234 567 8

SC1 SC2
JP5: 10V JP4: 24V
0V / GND 24V AC/DC DO1 DO1 DO2 DO2 RT RT

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Com NO NC 0V / GND 24V AC/DC DO1 DO1 DO2 DO2 RT RT 0V / GND 24V AC/DC DO1 DO1 DO2 DO2 RT RT

Wiring diagram CHR-NA with CHD-NA and APS for RS, EL, GS, US and SE

APS
Air Proofing 2598427

CHD-NA
On/Off Duct Humidistat / High Limit 2548732

CHR-NA
On/Off Wall Humidistat 2548731

1 234 567 8

1 234 567 8

EL / RS / GS / US / SE 1 2 3 4 5 6 7 8 9 10 11 12

24VAC Safety Loop
GND CH1 CH2 GND

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