Honeywell HCM-631N User Guide - Page 36

Using the Correct Control Diagram

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Using the Correct Control Diagram WIRING CAUTION: Voltage Hazard. Before wiring to HVAC terminals, disconnect HVAC equipment power. Make sure TrueSTEAM is not plugged in. Follow the diagram for control options 1 through 14 to wire the TrueSTEAM. Refer to the installation manual provided with the control for additional instructions if needed. HVAC R CWY G HUM HUM RECOMMENDED AIR FLOW SWITCH (AFS) R Rc W Y G MECHANICAL HUMIDISTAT 24V 24V HUM HUM C GT R RT GF EXT HVAC POWER MASTER TrueSTEAM - INTERNAL M24756 OPTION 1: Dry-contact Mechanical Humidistat Wiring 1 Make sure that the thermostat used isolates Y from G. All Honeywell Prestige, VisionPRO IAQ, VisionPRO, and Focus Pro thermostats do this. 1 23 On 4 56 Off AFS Monitor Recommended M32913 THERMOSTAT HVAC R CWY G HUM HUM 24V 24V RECOMMENDED AIR FLOW SWITCH (AFS) R Rc W Y G ELECTRONIC HUMIDISTAT OPTION 2: TrueIAQ Wiring 24V 24V HUM HUM C GT R RT GF EXT HVAC POWER MASTER TrueSTEAM - INTERNAL 1 Make sure that the thermostat used isolates Y from G. All Honeywell Prestige, VisionPRO IAQ, VisionPRO, and Focus Pro thermostats do this. 2 For the TrueIAQ Installer Setup, set ISU #25 to 3. 1 23 On 4 56 THERMOSTAT M24757 Off AFS Monitor Recommended M32913 34 TrueSTEAM Humidification System 69-2285-01

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WIRING
Follow the diagram for control options 1 through 14 to wire the TrueSTEAM. Refer to the installation manual
provided with the control for additional instructions if needed.
OPTION 1: Dry-contact Mechanical
Humidistat Wiring
1
Make sure that the thermostat used
isolates Y from G. All Honeywell Prestige,
VisionPRO IAQ, VisionPRO, and Focus Pro
thermostats do this.
OPTION 2: TrueIAQ Wiring
1
Make sure that the thermostat used
isolates Y from G. All Honeywell Prestige,
VisionPRO IAQ, VisionPRO, and Focus Pro
thermostats do this.
2
For the TrueIAQ Installer Setup, set ISU
#25 to 3.
HVAC
RECOMMENDED
AIR FLOW SWITCH (AFS)
MECHANICAL
HUMIDISTAT
HVAC
POWER
MASTER
THERMOSTAT
HUM
HUM
G
Y
W
R
Rc
G
Y
W
R
C
TrueSTEAM - INTERNAL
24V
24V
HUM
HUM
C
GT
R
RT
GF
EXT
M24756
HVAC
ELECTRONIC
HUMIDISTAT
THERMOSTAT
HUM
HUM
24V
24V
G
Y
W
R
Rc
G
Y
W
R
C
24V
24V
HUM
HUM
C
GT
R
RT
GF
EXT
RECOMMENDED
AIR FLOW SWITCH (AFS)
M24757
HVAC
POWER
MASTER
TrueSTEAM - INTERNAL
Using the Correct Control Diagram
CAUTION: Voltage Hazard.
Before wiring to HVAC terminals, disconnect HVAC equipment power. Make sure TrueSTEAM
is not plugged in.
6
5
4
3
2
On
Off
1
AFS Monitor Recommended
M32913
6
5
4
3
2
On
Off
1
AFS Monitor Recommended
M32913
TrueSTEAM Humidification System
69-2285—01
34