CARNES HXHAS User manual

READ AND SAVE
THESE INSTRUCTIONS
COmmERCIAl HUmIDISTAT
OwNERS mANUAl AND
qUICk REfERENCE gUIDE
mODElS
HXHAS, HXHAST,
HXHAw, HXHAwT
FORM 16767
ISSUED: 03-10-21

2 Form 16767
Safety Cautions | COMMERCIAL HUMIDISTAT
CAUTION:
Follow all recommendations, instructions and precautions in this Installation,
Operation and Maintenance Manual to maximize performance, maintain
efficiency and to provide a safe operational environment. Do not install, use
or operate this equipment until this manual has been completely read and
understood.
Important Note:Disconnect electrical power to the furnace and humidifier
before servicing or starting installation.
Liability:
Carnes does not accept any liability for installations of humidifier
equipment installed by unqualified personnel, or the use of parts,
components, equipment, or alterations of Carnes manufactured equipment
that is not authorized or approved by Carnes.
!

COMMERCIAL HUMIDISTAT | Table of Contents
Form 16767 3
Models HXHAS, HXHAST, HXHAW, HXHAWT ......................................... 0
Caution........................................................................................................ 2
Packing List................................................................................................. 4
Humidistat Function .................................................................................... 5
Complete Installation .................................................................................. 6
Duct Installation.................................................................................... 6
Wall Mount Installation ......................................................................... 7
Outdoor Temperature Sensor .............................................................. 8
Location Outdoors.......................................................................... 9
Location in Outdoor Air Intake ..................................................... 10
Wiring ................................................................................................. 11
Power Connection Wiring (R, C) ................................................. 12
Outdoor Temperature Sensor Wiring (ODT) ............................... 12
Humidifier Control Wiring (H1+)................................................... 12
Modes of Operation .................................................................................. 13
Humidistat Demand Mode.................................................................. 14
High Limit Humidistat ......................................................................... 15
Humidity Sensor ................................................................................. 15
Operation .................................................................................................. 16
Screen and Menu............................................................................... 16
Home Screen ............................................................................... 16
Settings Page............................................................................... 17
Setpoint Adjustment Page ........................................................... 17
Units Option .............................................................................................. 18

Packing List | COMMERCIAL HUMIDISTAT
4 Form 16767
Verify all components were included in the humidistat packaging.
BC
Figure 1: Humidistat Package Components
HXHAW A. Humidistat
E. Drywall Anchors and Screws (2 each)
HXHAWT A. Humidistat
C. Outdoor Air Temperature Sensor
E. Drywall Anchors and Screws (2 each)
HXHAS A. Humidistat
B. Duct Sensor
D. Sheet Metal Screws (3)
E. Drywall Anchors and Screws (2 each)
HXHAST A. Humidistat
B. Duct Sensor
C. Outdoor Air Temperature Sensor
D. Sheet Metal Screws (3)
E. Drywall Anchors and Screws (2 each)
A

COMMERCIAL HUMIDISTAT | Installation
Form 16767 5
Humidistat Function
A humidistat is a device that measures relative humidity and works with
an external controller or humidier to automatically control the humidier to
maintain a desired humidity level throughout the conditioned space.
The Carnes commercial humidistats are capable of controlling a humidier by
ON/OFF or modulating 0-10 VDC control signals. The commercial humidistat
package offers 2 types of installation and multiple modes of operation to t
any humidication need. The two types of installations are wall-mounted
and duct-mounted and are offered in differing packages upon ordering. The
multiple modes of operation are the industry standard humidistat demand
output, the high limit demand output, and the humidity sensor output.
Each type of the commercial humidistat will be shipped with different
defaults, all listed below…
Humidistat Version Output (Default) Mode (Default)
HXHAS Modulating 0-10 VDC Common Demand Signal
HXHAST Modulating 0-10 VDC Common Demand Signal
HXHAW Modulating 0-10 VDC High Limit Demand Signal
HXHAWT Modulating 0-10 VDC High Limit Demand Signal