Greenheck Fan VSU Make-Up Air Unit with Direct-Fired Gas Heater 470654 - Manual (Page 8)

8 Model VSU Make-Up Air
®
Complete Installation
A typical horizontal discharge installation is shown. Gas
and/or electrical lines can be connected at this time.
For upblast units, a duct elbow may be needed to turn
the ductwork into the building. Follow proper ductwork
methods recommended by AMCA to make this elbow to
minimize duct losses.
Installation of Optional Service Platform
TOOLS REQUIRED
• (2) 9/16 in. sockets or wrenches
• Drill with 7/16 in. drill bit and 5/16 in. drill bit
• A crane or forklift is recommended for assembly and
attachment.
Service Platform Material List
(1) Platform Base Unit with
predrilled holes for hand
rails, legs and attachments. (1) Leg Cross Member
(2) Legs
(1) Left Hand Rail with
Safety Chains
(1) Right Hand Rail
Fasteners
(3)
Hex Head Bolts
3/8 in. x 1-1/2 in.
(2)
Thread Cutting
Screws
3/8 in. x 1 in.
(18)
Hex Head Bolts
3/8 in. x 3/4 in.
(27)
Hex Head Nuts
3/8 in.