Bypass flow through humidifier

How to Install Second Bypass Flow-Through Humidifier

In order to mount a second bypass flow-through humidifier you have to do the following:









To assure optimal product performance, be sure the template is level before marking.
Determine the location for the humidifier below the existing one and draw a level line.

• Tape a template and trace around it
  
• Remove the template and carefully cut the rectangular opening by piercing the initial hole with a screwdriver and a hammer and cut the opening with red aviation snips
  
• Disassemble the humidifier
  
• Remove the cover and take out the humidifier pad assembly

P. 1                                                              P. 2

Sidewalls are interchangeable for either left or right bypass installation. To change direction, remove the screws holding each sidewall, switch sidewall locations, and reinstall the screws.
P. 3                                                                                                                            P. 4

• Unscrew the solenoid valve and store it properly. You may need it in the future to replace if the existing one on the first humidifier will get broken
  
• Drill the hole in the top of the humidifier housing and install the tubing fitting connector (P. 2, P. 3)
  
• Position the humidifier housing in the opening (be sure it’s level), so the locking tabs are in place on the lower sheet metal edge of the opening
  
• Secure the humidifier housing to the opening at the top and bottom using sheet metal screws
  

P. 5                                                                                                                          P. 6

• Remove 6” elbow and piece of pipe from the existing humidifier and the 6” collar or 6” take-off from the plenum and
  
• Mark out 8” opening over the existing one by using 8” template or 8” collar itself
  
• Cut the opening for 8” collar or 8” take-off or elbow with a red aviation snips
  
• Install the 8” elbow or collar (P. 5)
  
• Install a piece of 8” pipe with the 8-6-8 Tee and 8”>6” reducer from the 8” elbow (P. 6)
  
• Connect a 8-6-8 Tee to the humidifiers by using two pieces of the 6” pipes with dampers installed on the inside and three 6” elbows
  
• Reinstall the humidifier pad assembly in the humidifier housing (P. 4)
  
• Hinge the cover in place and secure with the thumb screw located at the bottom of the cover

P. 7                                                                                            P. 8
For connection to the gravity drainage:

• Connect a ½” or 3/8” drain tube to the humidifier drain fitting and run to the condensate line (P. 8).

See list of applicable bypass flow-through humidifiers in the widget below: