Greenheck ERV-522/90 Curbs (460988) - Manual (Page 3)

3
STEP 3: Fastening Inner Cross and Outer Duct Channel (Items 6 & 8)
Hardware Required: (8) Screws, SMS (A) 12 x 0.625 (IHH)
(1) Inner Cross Channel
(1) Outer Duct Channel
Instructions: • Position the Outer Duct
Channel as depicted.
• Align the holes and fasten
using (4) 12 x 0.625 (IHH)
screws.
• Position the Inner Cross
Channel as depicted.
• Align the holes and fasten
using (4) 12 x 0.625 (IHH)
screws.
A
B
STEP 4: Fastening Inner Duct and Duct Cross Channels (Items 5 & 7)
Hardware Required: (8) Screws, SMS (A) 12 x 0.625 (IHH)
(1) Duct Cross Channel
(1) Inner Duct Channel
Instructions: • Position the Inner Duct
Channel as depicted.
• Align the holes and fasten
using (4) 12 x 0.625 (IHH)
screws.
• Position the Duct Cross
Channel as depicted.
• Align the holes and fasten
using (4) 12 x 0.625 (IHH)
screws.
Outer Duct
Channel
Inner Cross
Channel
Supply
Side
IMPORTANT! The following steps are for ductwork support. These steps are required only
if the ductwork will be installed prior to the ERV unit.
C
D
Duct Cross
Channel
Inner Duct
Channel
Supply
Side
Inner Cross
Length
Outer Duct
Length
A B
ERV-522/90 23.50 58.60 22.13 25.25
ERV-582/120 34.50 74.00 35.75 36.25
All dimensions in inches.
Duct Cross
Length
Inner Duct
Length
C D
ERV-522/90 22.13 36.50 27.70 12.75
ERV-582/120 35.75 38.12 32.25 13.00
All dimensions in inches.