IN STAL LA TION IN STRUC TIONS FOR EN ERGY RE COV ERY SYS TEMS (ERS)
SHIP PING AND PACK ING LIST
Package 1 of 1 contains: See Illustration 1 and 2.
1 - Energy Recovery System Assembly
1 - Outdoor Fresh Air Hood with Filter
1 - Outdoor Exhaust Air Hood with Barometric
Damper
1 - Top Filler Panel
1 - Bottom Filler Panel w/ Platform Support Rail
(Mounted)
2 - Side Filler (Installed on ERS)
1 - Hardware Bag:
14' - Gasket ¾" x 1 ¼"
1
7' - Gasket
" x ½"
8
1 - Field Harness
4 - Wire Ties
10 - Self-Tapping Screws 10-16 x ½"
8 - Gold Screws 10-16 x ½"
1 - Installation Instruction
PRIN CI PLE OF OPERATION
The ERS enthalpy wheel contains parallel layers of a
polymeric material that are impregnated with silica gel
(desiccant). The wheel is located in the entering (intake)
air and exhaust air streams of the ventilation equipment.
As the wheel rotates through each air stream, the wheel
surface adsorbs sensible and latent energy. In the heating
mode, the wheel rotates to provide a constant transfer of
heat from the exhaust air stream to the colder intake air
stream. During the cooling season, the process is
reversed. When the temperatures are mild the wheel
pivots out of the air stream to allow economizer to operate
FIL TER ACCESS
EN ERGY
RE COV ERY
FRESH
CON TROL BOARD
AIR
EX HAUST FAN
EXHAUST
POWER EN TRY
AIR
20
5
16
KITS AND ACCESSORIES
P20A-50LDW
July 12, 2010
Supersedes 02-12-10
USED WITH LC/LG 072 SE RIES UNITS
Patent# 5,548,970
ETL Certified
per UL 1995
and CSA 22.2
FRESH AIR BLOWER
WHEEL
WIR ING
MAKEUP
BOX
55
3
8
EN ERGY RE COV ERY SYSTEM
normally for "free cooling" when outdoor temperature and
humidity is acceptable. During economizer operation, the
ERS exhaust blower continues to run, providing power
exhaust for the system. The intake blower is de-energized
during economizer operation.
Improper installation, adjustment, alteration, service
or maintenance can cause property damage,
personal injury or loss of life. Installation and servi ce
must be performed by a qualified installer or service
agency.
20
5
16
OUT DOOR AIR DAMPERS
MIXED AIR
RETURN AIR
PAGE 1
50P2050xH
WARNING
37 ¼
3
55
8
TELE SCOP IN G LEG
Illustration 1
37 ¼
MIXED AIR
OUTDOOR AIR
RETURN/
EXHAUST AIR
Illustration 2
37 ½
37 ½
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