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H7625B; H7635B,C; H7655B DUCT-MOUNT AND OUTDOOR-MOUNT HUMIDITY/TEMPERATURE SENSORS
63-2579—3 2
Outdoor Mounting
The H7635C senses outdoor air humidity and
temperature. Mount this control where it can sense
average outdoor air humidity and temperature. Normally,
the north side of a building provides a suitable location.
NOTES:
— H7635C is weatherproof for outdoor use.
Knockouts allow 1/2 in. conduit connection.
— To avoid damaging board during installation,
the cover can be detached completely:
1.Carefully remove wire plug from board.
2.Set the cover aside.
1. Open case by rotating the cover counterclockwise.
NOTE: Orient case so the element points down.
2. Mount standard 1/2 in. conduit to the case.
3. Use case to mark mounting screw pilot hole
locations.
4. Drill pilot holes.
5. Fasten the case to the wall.
6. Wire the sensor. See Wiring section.
NOTE: The two free wires are thermistor wiring
connections. When connecting these, use
two wire nuts.
7. Reattach the wire plug and cover being careful not
to pinch wires between the cover and case.
Output Settings (Table 1)
The board has three switch blocks:
— A six DIP switch block.
— A four DIP switch block.
— A white gang switch on a blue block.
1. Adjust the 4-switch block according to Table 1.
NOTE: The 6-switch block normally requires no
adjustment. (See the Appendix.)
2. Set the gang switch (white switch in blue block) to
correspond with the output (mA or Vdc).
NOTE: See Fig. 1 for DIP switch locations.
Table 1. Controller Compatibility
and Output Settings.
Fig. 1. DIP switch locations and settings.
Controller
Required
Sensor
Output
Setting
4-Switch Block
Settings
Blue and
White
Output
Switch
L
ONSPEC™
Setting4321
W7750, W7760,
W7761
4-20 mA — On — — 4-20 mA C7600C
W7750B,C
W7760C,
W7753, W7760
0-10 Vdc
(default)
On — — On Vout H7621/31
T7350, XL50,
XL100,
XL500 XF
Modules, XFL
0-10 Vdc
(default)
On — — On Vout n/a
Non-Honeywell 0-5 Vdc On — On — Vout n/a
M22705
NORMAL OPERATION
OFF
ON
OFF
ON
0-10 VDC
OFF
ON
4-20 MA
0-5 VDC
OFF
ON