Fig. 37—Control Center
A02278
FLASH 
UPGRADE 
CONNECTOR 
(FACTORY 
ONLY) 
ACRDJ – AIR 
CONDITIONING 
RELAY DISABLE 
JUMPER
HUMIDIFIER 
TERMINAL (24-VAC 
0.5 AMP MAX. 
CONTINUOUS FAN 
(CF) AIRFLOW 
SETUP SWITCHES
COMMUNICATION 
CONNECTOR 
AIR CONDITIONING 
(A/C) AIRFLOW 
SETUP SWITCHES 
MODEL PLUG 
CONNECTOR 
SW1 SETUP 
SWITCHES AND 
BLOWER OFF-
DELAY 
STATUS AND COMM 
LED LIGHTS  
3-AMP FUSE  
TRANSFORMER 24-VAC 
CONNECTIONS  
PL3 – ECM BLOWER 
HARNESS 
CONNECTOR  
PL1 – LOW VOLTAGE MAIN 
HARNESS CONNECTOR  
EAC-1 TERMINAL 
115-VAC 1.0 AMP MAX.
 
115-VAC (L1) LINE 
VOLTAGE  CONNECTIONS  
115-VAC (L2) NEUTRAL 
CONNECTIONS  
PL2 – HOT SURFACE 
IGNITER & INDUCER 
MOTOR CONNECTOR
24-V THERMOSTAT 
TERMINALS 
FUTURE 
APPLICATIONS 
Table 7—Approved Combustion-Air and Vent Pipe, Fitting and Cement Materials
ASTM SPECIFICATION
(MARKED ON MATERIAL)
MATERIAL PIPE FITTINGS SOLVENT CEMENT AND PRIMERS DESCRIPTION
D1527 ABS Pipe — — Schedule-40
D1785 PVC Pipe — — Schedule-40
D2235 For ABS — —
Solvent
Cement
For ABS
D2241 PVC Pipe — — SDR-21 & SDR-26
D2466 PVC — Fittings — Schedule-40
D2468 ABS — Fittings — Schedule-40
D2564 For PVC — —
Solvent
Cement
For PVC
D2661 ABS Pipe Fittings — DWV at Schedule-40 IPS sizes
D2665 PVC Pipe Fittings — DWV
F438 CPVC — Fittings — Schedule-40
F441 CPVC Pipe — — Schedule-40
F442 CPVC Pipe — — SDR
F493 For CPVC — —
Solvent
Cement
For CPVC
F628 ABS Pipe — — Cellular Core DWV at Schedule-40 IPS sizes
F656 For PVC — — Primer For PVC
F891 PVC Pipe — — Cellular Core Schedule-40 & DWV
30