Honeywell HE220 Installation Manual & Owner's Manual page 13

WIRING
CAUTION
Hazardous Voltage.
Can cause personal injury or equipment damage.
Disconnect power supply before installing or servicing equipment.
IMPORTANT
All wiring must com-
ply with applicable
local code, ordi-
nances and regula-
tions.
Wire the humidifier solenoid
valve, pressure switch,
humidistat and transformer.
See Fig. 15.
1. Run the two-strand thermostat wire from the humidifier to the humidistat, and
from the humidistat to the pressure switch.
2. Cut lengths of thermostat wire to reach between components, leaving adequate
wire at both ends for connections.
NOTE: Humidistat and pressure switch can be wired in any order.
3. At the humidifier, con-
nect the black and
white conductors to
the two yellow humidi-
fier wires. (The red
wires from the humid-
ifier are not used.)
4. At the humidistat,
connect both black
conductors to the two
humidistat terminals.
Use a wire nut to con-
nect together the two
white conductors.
5. At the pressure switch, connect the black and white conductors to the C and NO
pressure switch terminals (NC terminal is not used).
HE220, HE260 HUMIDIFIER AND INSTALLATION KIT
HUMIDIFIER
SOLENOID
VALVE
Fig. 15. Wiring the controls.
NORMALLY OPEN (NO)
TERMINAL 1/4 (6) X 1/32 (1)
THICK QUICK CONNECT
ATTACH
WIRE TO HVAC
ADAPTOR
C TERMINAL
Fig. 16. Close-up of pressure switch wiring.
13
HUMIDISTAT
TRANSFORMER
ATTACH ADAPTER
WIRE TO HUMIDIFIER
C TERMINAL
C 1
1
2
3
2
3
3
2
NO
NC
+
PI
AIR PRESSURE
SWITCH
M28974
COMMON (C) TERMINAL
1/4 (6) X 1/32 (1) THICK
QUICK CONNECT
M27398A
69-2630ES—03