Installing / Wiring The Control - GeneralAire 900A Manuel D'installation

Model 900 Humidifier Installation Manual

Installing / Wiring The Control

GFX3 (Automatic Models)
24V OUTPUT FROM HUMIDIFIER (RED WIRES) OR
727-58 24 V. TRANSFORMER WITH CONSTANT POWER
OR 24 VAC POWER SUPPLY WITH CONSTANT POWER

!
WARNING: ALL WIRING SHOULD COMPLY WITH LOCAL ELECTRICAL CODES.
SNSR
OUTDOOR TEMP. SENSOR
HUM
WIRE JUMPER WIRE JUMPER
AC N
AC L
SNSR
OUTDOOR TEMP. SENSOR
HUM
WIRE
JUMPER
AC N
AC L
ON-OFF SWITCH
727-58 24 V. TRANSFORMER
HUMIDISTAT
HUMIDISTAT
24 V. TRANSFORMER
7A-7D Electronic Humidistat
7A - To furnace control board 24V
7B - To constant power using 24V transformer and pressure switch
7C - To furnace control board 115V with 24V transformer
7D - To constant power using 24V relay and current sensing relay
6
Breathe Healthier! Residential Whole-House Indoor Air Quality
OUTDOOR TEMP. SENSOR
(NOT USED IN MANUAL MODE)
HUMIDIFIER CONTROL LEADS
(YELLOW WIRES)
Thick Gasket
DUCT MOUNT ONLY
24V. SOLENOID VALVE
FURNACE
CONTROL BOARD
C
W
24v.
60CY.
7 A
R
24V. SOLENOID VALVE
W 24v.
N
60CY.
115v. FURNACE
(HOT) BOARD 7 C
60CY.
24V. SOLENOID VALVE
FURNACE
CONTROL BOARD
C
24v.
60CY.
HUM
7 E
24V. SOLENOID VALVE
FURNACE
BOARD
C
115v.
60CY.
(HOT)
ON-OFF SWITCH
ACC 7 G
EAC
MHX3C (Manual Models)
FIG. 1
Face
SNSR
OUTDOOR TEMP. SENSOR
HUM
WIRE
JUMPER
AC N
AC L
727-58 24 V. TRANSFORMER
24V. SOLENOID VALVE
OUTDOOR TEMP. SENSOR
SNSR
HUM
WIRE
JUMPER
AC N
AC L
ON-OFF SWITCH
727-58 24 V. TRANSFORMER
HUMIDISTAT
NO
C
12500 AIR
24 V. TRANSFORMER
PRESSURE SWITCH
24V. SOLENOID VALVE
HUMIDISTAT
ON-OFF SWITCH
24 V. TRANSFORMER
7E-7H Manual Humidistat
7E - To furnace control board 24V
7F - To constant power using 24V transformer and pressure switch
7G - To furnace control board 115V with 24V transformer
7H - To constant power using 24V relay and current sensing relay
Thin Gasket
DUCT MOUNT: Use
ONLY Outer Portion
WALL MOUNT: Use
Outer & Inner Portions
Mounting
Base
24V. SOLENOID VALVE
NO
C
12500 AIR
PRESSURE SWITCH
L2
115v.
60CY.
(HOT)
L1
ON-OFF SWITCH
FURNACE
GA50
COMMON LEAD
CURRENT
SENSING
RELAY
C
115v.
60CY.
(HOT)
24V. SOLENOID VALVE
L2
115v.
60CY.
(HOT)
ON-OFF SWITCH
L1
FURNACE
GA50
COMMON LEAD
CURRENT
SENSING
RELAY
C
(HOT)
115v.
60CY.
7 B
C
MULTI
SPEED
HI
BLOWER
LO
MOTOR
7 D
7 F
C
MULTI
SPEED
HI
BLOWER
LO
MOTOR
7 H