AUTO Mode:
The humidistat will automatically raise the humidity as the outdoor temperature
increases. This provides the highest possible humidity. The humidistat will automatically lower
the humidity as the temperature drops. This minimizes the risk of condensation on cold sur-
faces like windows.
In AUTO mode only, the Auto Humidity Index Set Point may be changed.
You can set your desired humidity index from 0 (low) to 10 (high) by pressing
UP
or
DOWN
.
The Humidity Index is based on the outdoor temperature and indoor humidity. The humidi-
fier will switch ON/OFF according to the calculated auto humidity index set point. When the
humidifier is operating, the will display. Lower Index settings are for older homes with less
insulation and poor vapor barriers. Higher Index settings are for newer homes with complete
vapor barriers, triple pane windows and high R value insulation.
Humidity Dwelling Type
Index
1-2
Older than 1950, no vapor barrier, little insulation.
3-4
Built 1950-1965, no vapor barrier, R6 insulation.
5-6
Built in 1965-1975, craft vapor barrier, R11 insulation.
7-8
Built in 1980-1990, craft vapor barrier, R19, double pane windows.
9-10
Built after 1990, poly vapor barrier, R38 insulation, foam exterior cladding, triple
pane windows.
If condensation is seen or suspected, reduce humidity index by 2 until condensation stops.
The level bars in the upper right portion of the display indicate the humidity index; one bar for
every two index points. For example, a humidity index of 6 will have three bars displayed in
the upper right corner of the display.
AUTO Mode Target Humidity
OFFSET Mode
To change the calibration of the humidistat, an offset may be entered to the Humidity, Indoor
Temperature or Outdoor Temperature displays. Press both
UP
and
DOWN
buttons together to
enter OFFSET mode. The word OFFSET and RH will display. Press
UP
OR
DOWN
to change the
humidistat’s Humidity calibration. Press both
UP
and
DOWN
buttons together again to change
the Indoor Temperature offset. Press both
UP
and
DOWN
buttons together again to change
the Outdoor Temperature offset.
Display a Temperature
Press the
THERMOMETER
button to move between displaying indoor and outdoor
temperature. The “tree” symbol will be displayed when showing outdoor temperature (if
outdoor sensor is connected). The “house” symbol will be displayed when showing indoor
temperature. To change between ˚F and ˚C, press the
˚F / C˚
button.
Trouble Shooting
“house” symbol flashing:
The indoor temperature sensor has failed.
“tree” symbol flashing
: The outdoor temperature sensor has failed.
Humidifier Turns On and Off Repeatedly
- Check that input voltage is between 18 and 30 volts AC and not intermittent.
- Check that humidistat is NOT mounted on supply duct, downstream of the humidifier
or within 12 inches of the humidifier.
- Make sure that Outdoor Sensor wiring is not close to line voltage wires.
Humidifier Runs Continuously
- If humidifier operates while HVAC system is off, check that power to humidifier is
switched with HVAC operation.
- If humidifier operates every time HVAC system runs, compare humidity to set point. If
humidity is lower than set point, humidistat will call for operation.
Humidifier Does Not Run
- Check wiring to / from humidistat control. Verify 18-30 volts. Use TEST MODE (see
“Testing the System”).
Humidifier Runs When Air Conditioning is On
- If this is undesirable, change wiring to be powered only during heating periods, or set
humidistat to Off mode.
Humidity Not High Enough
- Fault with humidifier. Check humidifier, water supply, electrical connections.
- HVAC operating time is too short. Check humidifier trouble shooting.
- Humidifier is undersized. Review humidity load and humidifier capacity.
- Humidity index is set too low in Auto Mode (see “Auto Mode”).
Humidity Too High
- Wiring fault. Set humidistat to “OFF” mode and check that operation ceases.
- Outdoor sensor is being kept warm. Check that sensor is not buried in snow, on south
side of house being warmed by sun or is too far inside of air intake.
- Humidity index set too high for structure.
WARRANTY FACILITY:
Braeburn Systems LLC
Attn: Warranty Department
2215 Cornell Avenue
Montgomery, IL 60538
5
YEAR
WARRANTY
LIMITED
Five Year Limited Warranty
Braeburn Systems LLC
2215 Cornell Avenue • Montgomery, IL 60538
Technical Assistance: www.braeburnonline.com
Call us toll-free: 866-268-5599 (U.S. Only)
630-844-1968 (Outside the U.S.)
©2009 Braeburn Systems LLC • All Rights Reserved • Made in China
229150-100-002
Outdoor Temperature °F
-20
-10
0
10
20
30
40
50
1
0
5
10
15
20
25
30
35
2
0
8
13
18
23
28
33
38
3
0
11
16
21
26
31
36
41
4
0
14
19
24
29
34
39
44
5
0
17
22
27
32
37
42
47
6
0
20
25
30
35
40
45
50
7
0
23
28
33
38
43
48
53
8
0
26
31
36
41
46
51
56
9
0
29
34
39
44
49
54
59
10
0
32
37
42
47
52
57
62
Humidity
Index
Testing the System
1. Re-assemble system and check all connections.
2. Restore power to the HVAC system.
3. Check to see that humidistat display is on.
4. Start HVAC System by raising thermostat setting in heat mode.
5. Set humidistat to TEST MODE by pressing the
DROP
and
THERMOMETER
buttons at the
same time for 5 seconds. The relay will close and the will flash for 2 minutes. The
humidifier should start operation.
6. Set to OFF mode to verify humidifier operation ceases.
7. The humidistat will stay in OFF mode unless set to Manual or Automatic mode. See “Operation”.
Operating Modes
Press any button to light the display. Press the
DROP
button to select Off, Manual or Auto Mode.
OFF Mode:
The humidifier is turned off.
MANUAL Mode:
The humidistat will maintain the single humidity
set point selected. You can set your desired humidity level by
pressing
UP
or
DOWN
. The humidifier will turn ON or OFF
according to your setting. The humidifier will operate when the
measured relative humidity falls more than 1% below the set
point until the measured relative humidity is 1% above the
set point. When the humidifier is operating, the will appear in
the display. Humidity may have to be lowered when weather is
colder or if condensation is suspected. The settings table at right
may be used for manual humidistat control.
Outdoor Suggested
Temperature Setting
-20˚F -29˚C
15%
-10˚F -23˚C
20%
0˚F -18˚C
25%
+10˚F -12˚C
30%
+20˚F -7˚C
35%
+30˚F -1˚C
40%
% Relative Humidity
Braeburn Systems LLC warrants each new Braeburn digital humidistat against any defects
that are due to faulty material or workmanship for a period of five years after the original
date of purchase by a professional service technician. This warranty and our liability does
not include damage to merchandise or the humidistat resulting from accident, alteration,
neglect, misuse, improper installation or any other failure to follow Braeburn installation
and operating instructions.
Braeburn Systems LLC agrees to repair or replace at its option any Braeburn digital
humidistat under warranty provided it is returned postage prepaid to our warranty facility
in a padded carton within the warranty period, with proof of the original date of purchase
and a brief description of the malfunction. This limited warranty does not include the cost
of removal or re-installation.
This warranty gives you specific legal rights and you may also have other rights that vary
from state to state or province to province. Answers to any questions regarding our limited
warranty may be obtained by writing our corporate offices.
