Johnson Controls ENVIRO-TEC MQL B Series, Manual

Page: 15 / 36

Suspending Using Field Supplied Supports
All field supplied structural supports must be designed
to support entire unit weight including all appurtenanc-
es, motor, drives, and all live or dead loads. All sup-
ports must be designed to meet applicable local codes
and ordinances. Each module must be supported with
an angle iron or channel. The angle iron or channel
must cover the width and length of the equipment base
and must be designed to mechanically lock the unit to
the field supports (see Figure 6 on page 13 ).
Internal Isolation
Equipment may be supplied with internal spring isola-
tion. If so, removal of shipping hold-downs is required
before equipment start-up (see
Figure 8 on page 15
).
LD14007
SHIPPING HOLD-DOWNS-
REMOVE BEFORE START-UP
EXTRA HOLD-DOWN
ON SIZES 10 & ABOVE
FIGURE 8 - REMOVE HOLD DOWNS
External Isolation
Install vibration isolators (see
Figure 9 on page 15
)
in accordance with the job specifications and the in-
structions of the isolator manufacturer base. Base rails
are required for external isolation. If the coil module
is also isolated, the piping must be isolated or have a
flexible connection to prevent coil header damage due
to equipment movement. All piping, wiring, ductwork
and external connections must be isolated.
Service Clearance
Access to at least one side of the equipment is required
for routine service, maintenance and repair. Consider-
ation should be given to fan shaft, coil, filter removal,
motor, fan, bearings, and damper linkage access. Clear-
ance must meet or exceed applicable local and national
codes.
Panel Removal
To remove access panels, loosen the four retaining
screws and lift panel off. Alternately, lift off hinges
with quick turn fasteners.
General Piping
All pipe connections need to be supported indepen-
dently from the header. Failure to do so may cause
cracking at the headers. All piping shall be in accor-
dance with local codes and follow accepted industry
standards. DX coil distributor cap for test and nitrogen
charge must be removed before mounting TXV. All
coil connections are stubbed out of cabinet panel with
the exception of refrigerant (DX) coils. Field penetra-
tion of panels is required for liquid line piping.
FIGURE 9 - ISOLATOR INSTALLATION
JOHNSON CONTROLS
15
SECTION 2 - INSTALLATION
FORM ET102.19-NOM1
ISSUE DATE:08/26/2013
2