York International VR028A15H Installation Instructions Manual

INSTALLATION
INSTRUCTIONS
I - Ship ping And Pack ing List
Package 1 of 2 contains:
1 - Energy Recovery Ventilator Assembly
1 - Outdoor Fresh Air Hood w/ Filter
1 - Outdoor Exhaust Hood w/ Barometric Dampers
Package 2 of 2 contains:
1 - Balancing Damper Assembly
1 - Platform Support Rail
2 - Door Panels
1 - Bag Assembly
1 - Roll of ¾" x 1 ¼" gasket
1 - 272" of " x ½" gasket
1
8
1 - Field Wiring Harness for Low Voltage with
ECO 1001 economizer control board
10 - #14 Screws
30 - #10 x ½" Gold Screws
1 - Installation Instructions
UERV
II - Ship ping Dam age
Check unit for shipping damage. Receiving party should
contact last carrier immediately if shipping damage is
found.
III - Gen eral
These instructions are intended as a general guide and do
not supersede local codes in any way. Authorities having
jurisdiction should be consulted before installation.
IV - Re quire ments
When installed, the unit must be electrically wired and
grounded in accordance with local codes or, in absence of
local codes, with the current National Electric Code,
ANSI/NFPA No. 70.
V - Ap pli ca tion
Unitary Energy Recovery Ventilator (UERV) are used with
15 to 30 ton rooftop units equipped with a balancing
damper assembly. These wheels conserve energy by
mixing warmer air with cooler air in the following manner:
UNITARY ENERGY RECOVERY VENTILATOR
MODEL VR028A15M/H & VR028A25H (STATIONARY)
E n e r g y r e c o ve r y C O M P O N E N T
certified to the AHRI Air-to-Air Energy
Recovery Ventilation Equipment
Certification Program in accordance
w ith AHRI Standard 1060-2000.
Actual performance in packaged
equipment may vary.
PAGE 1
MAXA-MI$ER
5257527-UAI-A-0616 / R28A-18YSDW
Recovery Wheel Mode
The Recovery Wheel mode is accomplished by two
blowers providing continuous exhaust of stale indoor air
and replacement by equal amount of outdoor air. Energy
recovery is achieved by slowly rotating the energy
recovery wheel within the cassette frame work. In winter,
the UERV adsorbs heat and moisture from the exhaust air
stream during one half of a complete rotation and gives
them back to the cold,drier intake air supply during the
other half rotation. In summer, the process is automatically
reversed. Heat and moisture are absorbed from incoming
fresh air supply and transferred to the exhaust air stream.
This process allows outdoor air ventilation rates to be
increased by factors of three or more without additional
energy penalty or increase in size of heating or air
conditioning systems.
VI - Rig ging Unit For Lift ing
1. Maximum weight of unit is — 750 Lbs. (Crated)
2. Remove crating. Then remove access panel to
retrieve bag assembly. Replace access panel.
3. All panels must be in place for rigging.
4. Lifting lugs are supplied with the unit. Loosen machine
bolts and rotate lifting lug.
WARNING
Electric shock hazard. Can cause injury
or death. Before attempting to perform
any service or maintenance, turn the
electrical pow er to unit OFF at
disconnect switch(es). Unit may have
multiple power supplies.
CAUTION
Danger of sharp metallic edges. Can cause injury.
Take care when servicing unit to avoid accidental
contact with sharp edges.
VII - In stal la tion
1. Disconnect all power to the rooftop unit.
Note: Ensure that no power source is connected to the
unit. If the economizer is installed and power is
applied, de-energize all power sources to the unit
and use Lockout - Tag-out procedures. There may
be multiple power inputs to unit, so validate that all
power sources are de-energized and tagged.
2. Remove the rooftop units horizontal and return air
access panels. Remove and discard any hoods,
power exhaust equipment or economizer. See Figure
1.
ETL Certified per UL 1995
and CSA 22.2