Johnson Controls HH-6705 Series Catalog Page
HH-6705 Series
Mounting Holes (2)
3/32 in. (2.4 mm)
for No. 6 Screws
6.12
155
4.44
112
1.62
42
1.75
45
0.25
7
3.75
96
0.50
13
1.75
45
2.19
55
HH-6705 Dimensions, in. (mm)
hh67052p.eps
HH-6705-9N0GP Duct Humidistat
TRUERH
True ±2% Accur
TM
T
RUE
RH™
Duct Humidistat
Description
The HH-6705 Series Duct Humidistat is
typically mounted downstream from a
humidifier, and turns the humidifier off (contact
opens) when the setpoint is reached. Setpoint
is adjustable from 30 to 90% Relative Humidity
(RH). To reduce equipment cycling, the
HH-6705 Series turns the humidifier on
(contact closes) when the humidity in the duct
falls 5% below the setpoint.
Repair Information
If the HH-6705 Series TRUERH™ Duct
Humidistat fails to operate within its
specifications, replace the unit. For a
replacement humidistat, contact the nearest
Johnson Controls® representative.
Selection Chart
Code Number Description
HH-6705-9N0GP Duct Humidistat
Code No. LIT-1900106
Issued September 12, 2007
Features
•TRUERH™ circuitry and calibration
techniques for which patent is pending
• All-Polymer™ humidity sensor with
patented sensing element provides
accurate and reliable humidity sensing with
improved resistance to chemical corrosion
• 30 to 90% RH adjustable setpoint covers
most application requirements, including
humidification and dehumidification
• 5% fixed differential reduces humidification
equipment cycling
• plastic duct probe improves thermal
performance
• quick-mount, 2-screw installation reduces
installation time and simplifies retrofits
Technical Specifications
HH-6705 Series TRUERH™ Duct Humidistat
Power Requirements 20 to 30 VDC at 33 mA
Output Single-Pole, Single-Throw (SPST), normally open relay contact
Relay
Contact
Rating
Humidity Element All-Polymer
Ambient Operating Conditions 32 to 122°F (0 to 50°C)
Survival Operating Conditions -22 to 140°F (-30 to 60°C)
Ambient Storage Conditions -40 to 176°F (-40 to 80°C)
Materials Metal cover and housing with polymeric duct probe
Dimensions Overall (H x W x D) 4.44 x 2.19 x 7.87 in. (113 x 56 x 200 mm)
Shipping Weight 1.5 lb (0.7 kg)
Maximum 4 ampere at 24 VAC;
Minimum 100 mA at 5 VDC
Setpoint Adjustable from 30 to 90% RH
Sensing Range 0 to 100% RH, non-condensing
Differential Fixed 5% RH
Probe (D x L) 1.62 x 6.12 in.(41 x 155 mm)
or 20 to 30 VAC, 50/60 Hz at 45 mA (1.35 VA maximum), Class 2
Opens at setpoint on increasing RH
Closes at 5% RH below setpoint on decreasing RH
pilot duty 42.4 VA at 24 VAC, Class 2
0 to 100% RH, non-condensing;
86°F (30°C) maximum dew point
0 to 100% RH, non-condensing;
86°F (30°C) maximum dew point
0 to 100% RH, non-condensing;
86°F (30°C) maximum dew point
The performance specifications are nomina l and conf orm to accep table industr y standar ds. For ap plications a t condition s beyond th ese specification s, consult the local Johnson Controls o ffice.
Johnson Controls, Inc. shall not be liable for damages resulting from misapplication or misuse of its products. © 2012 Johnson Controls, Inc.
www.johnsoncontrols.com
1 of 1
Loading...