Tjernlund CS2 Crawl Space Intake Fans 8504176 - Manual (Page 2)

INSTALLATION
The Fresh Air Supply Fan must be installed by a qualified installer in accordance with these instructions and all local codes
or in their absence in accordance with the latest editions of the International Residential Code and International Electrical
Code. Improper installation can create a hazardous condition such as fire, electric shock or personal injury. To reduce
these risks significantly, use this unit only in the manner intended by the manufacturer. If you have questions, contact
Tjernlund Products. Always disconnect the Fresh Air Supply Fan from its power source before installation and servicing.
CAUTION: For general ventilation use only. Do not use to exhaust hazardous or explosive materials and vapors.
WARNING: To reduce the risk of fire or electric shock, do not use this fan with any solid-state speed control device.
TOOLS REQUIRED
• 5/16" Nut Runner or Flat Head Screw Driver
• Drill with 5/16" Masonry Bit if mounting on brick or foundation block
• Grounded Electrical Outlet within 6 feet of fan location.
INSTALLATION
LOCATION
Mount Fresh Air Supply Fan from the outside (remove existing vents if necessary) or inside the crawl space behind existing
foundation ventilation openings, (See Diagram A). Alternately, attach to joist to act as a “dead zone” circulation or stagnant
area fan, (See Diagram B).
IMPORTANT: Crawl Space Supply Fan must be mounted with the electrical control box and motor facing the interior of the
crawl space. Improper installation can create a hazardous condition such as fire, electric shock or personal injury.
1. Remove existing doors or covers on ventilation openings around the perimeter of the building.
2. Position the Crawl Space Supply Fan over the ventilation opening. To minimize moisture accumulation near power
supply, the unit should be oriented with the cord coming out on the top side of the fan(s), (See Diagrams Below).
3. If installing on foundation block or brick, mark location in the (6) mounting locations of the metal face plate and drill 5/16"
holes with masonry bit. Install wall anchors into openings and secure Fresh Air Supply Fan to the wall with (6) screws.
If installing on rim joist or mesh on existing crawl space vent, secure Fresh Air Supply Fan with (6) screws, washers and
nuts in the (6) mounting locations on metal face plate, (See Diagram A).
If installing on a joist / truss secure Fresh Air Supply Fan with (3) screws and washers in the top (3) mounting locations on
metal face plate, (See Diagram B).
4. Plug unit(s) into electrical outlet or use the optional Tjernlund DH2P Dehumidistat Control.
TYPICAL MODEL CS1 & CS2 MOUNTING
FOUNDATION OPENING (Model CS1 Shown) - DIAGRAM A
TYPICAL MODEL CS1 & CS2 JOIST / TRUSS
INSTALLATION (Model CS1 Shown) - DIAGRAM B