10
Enertech Global
IOM, ZS/ZT Models
Location
Supply
Return
Main Ducts
900 FPM
600 FPM
Branch Ducts
700 FPM
600 FPM
Grills, Registers, Diffusers
750 FPM
600 FPM
Table 1: Maximum Air Velocities
Duct Collar
or
Optional
Filter Rack
Flex Connector
Return Air
Flex Connector
Supply Air
Air Filter
Horizontal Unit
(Top View)
Return and Supply Air Duct System
Maintain duct size
of supply flange for
at least 12” before
transitioning to size
of supply plenum
designed for
duct system.
Typical Ductwork Connection Setup:
Optional Filter Rack Kit Installation
Installation of the optional and sold separately
accessory filter rack is described in the
installation instructions provided with that item.
Maintenance and filter change instructions are
included in the owners manual shipped with
every packaged unit.
Service
Ball Valves
Hose
Kits
Unit
Power
Disconnect
ZS/ZT Hanger Bracket
Shipped with Unit
See Installation Instructions
20D244-01NN
4 Threaded Rod
Attachments
Source
Water Out
Source
Water In
All Attachments
per Local Codes
Install with hanger box snug to 1/4” (6mm) Seismic LDS Rubber Washer,
so washer is tight to overhead surface. Upper hanger element deflects
under load, leaving space on top. Washer cushions upward seismic travel.
UPPER ROD
BY OTHERS
DEFLECTION
SCALE
SEISMIC
LDS RUBBER
REBOUND
WASHER
REX
PC30N (Mason Industries) -- Available from mason-industries.com
TYPE 30N PRECOMPRESSED &
SEISMIC RESTRAINT
30°
Seismic Rebound Steel and
Bonded LDS Rubber Washer
holds precompression and limits
upward seismic motion. Hangers
are precompressed to rated load
or assigned load as required.
Scale indicates deflection.
Adjust nut to
provide
1
/
4
”(6mm)
washer clearance
after hanger is fully
loaded.
1/4” (6mm)
Horizontal Unit Suspension
Seismic Hanger Bracket
SECTION 3: INSTALLATION CONSIDERATIONS