External Controls - Honeywell HM700A1000 Instructions D'installation

HM700A1000

EXTERNAL CONTROLS

Fan Interlock Wiring with HumidiPRO
When distributing steam into a duct, there could be a call for
humidity when there is no air flow. The HM700 with
HumidiPRO control or some other thermostat (such as the
Honeywell Prestige of VisionPRO
fan on a call for humidity. If using another thermostat, consult
that control's manual for wiring instructions to enable the fan
with a powered humidification device.
NOTE: Humidifier will not start producing steam until
fan security loop is closed.
HVAC
R C W Y G
R Rc W Y G
THERMOSTAT
Fig. 17. Wiring the steam humidifier with a digital thermostat.
NOTE: If a Prestige, VisionPRO, Lyric (or similar) are used to control humidity, wire the two HUM contacts to terminals 1 and 2
on the HM700. With the jumper in place between terminals 1 and 8 on the HM700, only these two wires are necessary
to control humidity. Be sure to configure the control to force fan on with a call for humidity, or run on a heat cycle if the fan
enable wiring is not used.
33-00118EFS—01
®
) can be used to enable a
R
C
U
U
S
S
R/HUM
OUTDOOR
HUM
SENSOR
C
N/A
AIR PROVING
OR JUMPER
AP
G
R
N/A
M35754
This information is relevant to all controls, factory supplied or
otherwise. For wiring use minimum 18 AWG solid wire and
keep as short as possible.
Humidity Control
• Can be located either in return air duct (preferred) or in
room being humidified.
• Avoid placing near discharge diffuser of humidified air.
• Mount in area representative of room humidity (drafts,
doorways, sunlight, or an overhang such as a shelf can
affect reading).
Optional Outdoor Temperature Sensor (not shown; included
with HumidPRO)
• Mount outside in area representing air temperature.
HVAC
R C W
F
F
R Rc W
THERMOSTAT
Fig. 18. Wiring the steam humidifier with a mechanical
12
R
C
U
U
Y G
S
S
OUTDOOR
SENSOR
AIR PROVING
OR JUMPER
SPDT RELAY
COM
NC
NO
NOTE: SPDT RELAY IS NECESSARY TO PREVENT
ENERGIZING THE Y TERMINAL IF THE
Y G
THERMOSTAT DOES NOT ISOLATE Y AND G.
thermostat.
R/HUM
HUM
C
N/A
AP
G
F
R
F
N/A
M35730