ICP N9MSB - Furnace Control Wiring Diagrams; Humidifier Isolation Relay Figure; Furnace Control Board Example Figure

Figure 39 1Isolation Relay for Humidifiers with Internal Power Supply
To Humidifier Leads
To Humidifier Leads
O
24 V
Coil
O
To HUM 24 VAC Terminal
On Furnace Control Board
To C Screw Terminal
on Thermostat Strip
I
Figure 40
Example of Single Stage Furnace Control for PSC Blower Motor
HEAT TWINNING AND/OR
OFF-DELAY COMPONENT TEST
TERMINAL
24-V THERMOSTAT
TERMINALS
J2 JUMPER
\
8-AMP FUSE
LED OPERATION &
DIAGNOSTIC LIGHT
115-VAC (L2) NEUTRAL
CONNECTIONS _'_
BLOWER SPEEE
SELECTION TERMINALS
TES&_W,.rlHUM _ HUMIDIFIER TERMINAL
(24-VAC 0.5 AMP MAX)
TRANSFORMER 24-VAC
CONNECTIONS
P1 - LOW VOLTAGE MAIN
HARNESS CONNECTOR
XFMR HUM
115 VAC
(L1) LINE
VOLTAGE
CONNECTION
IND 1 HSI
Al1157
HUMIDIFIER
TERMINAL
115-VAC
P2-HOT SURFACE IGNITOR (HSI) & INDUCER
MOTOR (IND) CONNECTOR
L11F090
34 specificationssubjectto change without notice. 440 01 4101 03