Install Instructions

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INSTALLATION INSTRUCTIONS

Put Bar Code Here

62-0327-03

H7625A, H7635A, H7626A, H7636A Series

2000 Humidity/Temperature Sensors

WALL-MOUNT MODELS

APPLICATION

The H7625A, H7626A, H7635A and H7636A Wall-Mount

Humidity/Temperature Sensors are universal Relative

Humidity transmitters that can be powered with either a +18 to

40 Vdc or 24 Vac supply. The devices are half wave rectified.

The transmitter also includes either a 20K ohm NTC

thermistor or a 1K platinum PTC (compatible with the T775)

for optional temperature use.

The humidity sensors are designed with a field selectable 4 to

20 mA, 0 to 5 Vdc, or 0 to 10 Vdc output signal equivalent to 0

to 100% RH. All units are shipped from the factory with a

default setting to accept AC power with three-wire, 0 to 10 Vdc

output.

INSTALLATION

When Installing this Product...

1. Read these instructions carefully. Failure to follow them

could damage the product or cause a

hazardous condition.

2. Check ratings given in instructions and on the product to

ensure the product is suitable for your application.

3. Installer must be a trained, experienced service

technician.

4. After installation is complete, check out product

operation as provided in these instructions.

CAUTION

Electrical Shock or Equipment Damage Hazard.

Can shock individuals or short equipment

circuitry.

Disconnect power supply before installation.

CAUTION

Equipment Damage Hazard.

Improper wiring can damage the sensor beyond

repair.

Follow the wiring instructions carefully.

Location

Install the device where it cannot be affected by:

— drafts, or dead spots behind doors and in corners.

— hot or cold air from ducts.

— radiant heat from sun or appliances.

— concealed pipes and chimneys.

— unheated (uncooled) areas such as an outside wall behind

the device.

Mounting

The housing base mounts over standard 2 in. x 4 in. single

gang junction box or flush to the wall:

1. Install the sensor about 5 ft (1.5m) above the floor in an

area with good air circulation at average humidity and

temperature. (See Fig. 1.)

2. Ensure the device receives adequate airflow.

3. Wire the device. (See Fig. 5 through 4.)

4. Ensure proper DIP switch settings.

5. Apply power to the unit.

6. Snap the cover into position.

7. Turn out the 1/16 in. allen screws at the bottom of the

enclosure until the cover cannot be removed.

Fig. 1. Typical sensor location.

5 FEET

(1.5 METERS)

YES

M4823A

Summary of content (8 pages)

PAGE 1
H7625A, H7635A, H7626A, H7636A Series 2000 Humidity/Temperature Sensors WALL-MOUNT MODELS INSTALLATION INSTRUCTIONS APPLICATION The H7625A, H7626A, H7635A and H7636A Wall-Mount Humidity/Temperature Sensors are universal Relative Humidity transmitters that can be powered with either a +18 to 40 Vdc or 24 Vac supply. The devices are half wave rectified. The transmitter also includes either a 20K ohm NTC thermistor or a 1K platinum PTC (compatible with the T775) for optional temperature use.
PAGE 2
H7625A, H7635A, H7626A, H7636A SERIES 2000 HUMIDITY/TEMPERATURE SENSORS Output Settings Table 1. Controller Compatibility and Output Settings. The humidity output signal can be adjusted for 0-5Vdc, 0-10 Vdc or 4-20 mA using the switch block. Switches 6, 7, and 8 are used to set the output. Required Sensor Output Setting Controller NOTE: Refer Fig. 2 for switch settings.
PAGE 3
H7625A, H7635A, H7626A, H7636A SERIES 2000 HUMIDITY/TEMPERATURE SENSORS WIRING IMPORTANT When using shielded cable, ground the shield only at the controller end (see Fig. 4). Grounding both ends can cause a ground loop. A 16 to 22 AWG shielded cable is recommended for all transmitters. Twisted pair may be used for 2-wire current output transmitters. Refer to Figure 3 for wiring diagrams.
PAGE 4
H7625A, H7635A, H7626A, H7636A SERIES 2000 HUMIDITY/TEMPERATURE SENSORS TR23 Remote Sensor 12 11 10 9 8 7 6 5 4 3 2 OUTDOOR AIR SENSOR 1 HEAT RELAY 2 DISCHARGE AIR SENSOR T7350 SUBBASE T5 T6 T7 T4 HS HC T3 OS OS AS AS HP M M X RH COMPRESSOR CONTACTOR 4 W3/Y4 Y3 COMPRESSOR CONTACTOR 2 W2 Y2 Y1 G 5 RC AUX W1 COMPRESSOR CONTACTOR 3 3 MOTION SENSOR VOUT COM VIN (0-10 Vdc) (Vac) COMPRESSOR CONTACTOR 1 HUMIDITY SENSOR 4 1 ECONOMIZER L2 2 FAN RELAY HEAT RELAY 1 L1 (H
PAGE 5
H7625A, H7635A, H7626A, H7636A SERIES 2000 HUMIDITY/TEMPERATURE SENSORS HUMIDITY SENSOR 4-20mA VIN COM VOUT +TEMP DO-1 DO-2 COM DO-3 DO-4 COM DO-5 DO-6 COM DO-7 DO-8 COM 24 VAC 24 VAC COM EGND SHLD SBUS1 SBUS2 NET-1 NET-2 AO-1 COM AO-2 AO-3 COM D1-1 D1-2 COM D1-3 D1-4 20VDC U1-1 COM U1-2 U1-3 COM U1-4 U1-5 COM U1-6 2 2 2 2 2 2 2 2 2 3 3 3 3 3 3 3 3 3 3 4 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 1 1 1 1 1 1 1 1 1 2 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 24 VAC + 24 VAC COM M31268 Fig. 7.
PAGE 6
H7625A, H7635A, H7626A, H7636A SERIES 2000 HUMIDITY/TEMPERATURE SENSORS APPENDIX RH Test and Configuration DIP Switch Settings (Table 3) IMPORTANT • Only adjust these switches for troubleshooting or recalibrating the sensor. (Adjustment is not normally necessary.) Test mode will make the transmitter output a fixed 0%, 50%, or 100% value. The sensor will not affect the transmitter output. This is used for troubleshooting or testing only. Switches 1, 2, and 3 are used for test mode.
PAGE 7
H7625A, H7635A, H7626A, H7636A SERIES 2000 HUMIDITY/TEMPERATURE SENSORS Table 3. Test and Calibration Settings (8-Switch Block).
PAGE 8
H7625A, H7635A, H7626A, H7636A SERIES 2000 HUMIDITY/TEMPERATURE SENSORS CALIBRATION NOTE: This is only a single point calibration. All transmitters are factory calibrated to meet/exceed published specifications. Field adjustment should not be necessary. The dipswitch allows the user to calibrate the sensor through the software. Setting switch 4 ON will put the transmitter into setup mode allowing the increment and decrement to work. Once in setup mode, the output will change to 50% (2.