Specifications
SD Carel USA  
 5 
1. General Installation Rules 
Mount the humidifier unit as close 
to the steam distributor pipe or 
Remote Distribution Unit as 
possible to minimize condensate. 
Mount the humidifier unit below the 
steam distributor pipe or RDU 
whenever possible. Insure that a 
slope can be maintained in the 
steam hoses. Avoid kinks and 
gullys in steam hoses which can 
trap condensate and cause 
problems. 
Certain mounting clearances must 
be maintained to allow access for 
maintenance, and for steam 
discharge from an RDU: 
DIMENSION  101-103, 303-305  106, 308-313  323-3B3 
A 72” 72” 120” 
B  12” 24” 36” 
C  12” 24” 36” 
D  12” 24” 36” 
E  24” 24” 48” 
F  12” 12” 12” 
NOTE: Dimension A is clearance required in front for maintenance and RDU steam discharge. 
NOTE: Maximum length of rubber steam hose is 20 feet. Insulated copper tubing to 40 feet. 










