2. Horizontal Flow application with barometric
relief standard.
Power exhaust
The Power Exhaust is a field installed accessory.
Field installed Power Exhaust accessories include
complete instructions for installation.
There are two field installed Power Exhaust
accessories:
1. Down Flow application.
2. Horizontal Flow application that requires the
purchase of a barometric relief hood.
Rain hood
All of the hood components, including the mist
eliminators, the gasketing and the hardware for
assembling, are packaged and located between
the condenser coil section and the main unit
cabinet, if the unit has factory installed options.
If field installed accessories are being installed all
parts necessary for the installation comes in the
accessory.
Blower phasing
ZY units are properly phased at the factory. Check
for proper blower rotation. If the blower rotates
in the wrong direction at start-up, the electrical
connection to the unit is misphased. Change the
phasing of the
Field Line Connection at the
factory or field supplied disconnect
to obtain
proper rotation.
CAUTION
When installing equipment in a facility with a 3 phase
high-leg delta power supply, care must be taken to
ensure that the high-leg conductor is not attached to
either of the two legs of the (single phase, direct drive)
X13 or ECM motors. Failure to do so can result in the
motor acting erratically or not running at all.Check for
the high leg conductor by checking voltage of each
phase to ground.
Example: A or L1 phase to ground, voltage reading
is 120V. B or L2 phase to ground, voltage reading
is 195 to 208V. C or L3 phase to ground, voltage
reading is 120V. Therefore B or L2 phase is the high
Leg. The high should always be wired to the center
or B or L2 tap.
Note
: Check all three phase motors
and compressors for proper rotation after making a
change. If it is necessary to change 3 phase motor
rotation, swap A or L1 and C or L3 only.
Blower rotation
Check for proper supply air blower rotation. If the
blower is rotating backwards, the line voltage at the
unit point of power connection is misphased (see
Table 27: Supply Air Limitations
Supply Air (CFM)
Model (Size)
Minimum
Maximum
ZY04 (3)
900
1500
ZY05 (4)
1200
2000
ZY06 (5)
1500
2500
ZY07 (6)
1800
3000
ZYA7 (6)
1800
3000
ZY08 (7.5)
2250
3750
ZY09 (8.5)
2550
4250
ZY12 (10)
3000
5000
INSTALLATION MANUAL ZY SERIES 3 - 10 ton 60 Hertz R-410A
81
Johnson Controls Ducted Systems
Содержание ZY Series
Страница 2: ...2 INSTALLATION MANUAL ZY SERIES 3 10 ton 60 Hertz R 410A Johnson Controls Ducted Systems ...
Страница 8: ...Nomenclature INSTALLATION MANUAL ZY SERIES 3 10 ton 60 Hertz R 410A 8 Johnson Controls Ducted Systems ...
Страница 139: ...Start Up Sheet INSTALLATION MANUAL ZY SERIES 3 10 ton 60 Hertz R 410A 139 Johnson Controls Ducted Systems ...
Страница 140: ...INSTALLATION MANUAL ZY SERIES 3 10 ton 60 Hertz R 410A 140 Johnson Controls Ducted Systems ...
Страница 141: ...INSTALLATION MANUAL ZY SERIES 3 10 ton 60 Hertz R 410A 141 Johnson Controls Ducted Systems ...
Страница 142: ...INSTALLATION MANUAL ZY SERIES 3 10 ton 60 Hertz R 410A 142 Johnson Controls Ducted Systems ...
Страница 143: ...INSTALLATION MANUAL ZY SERIES 3 10 ton 60 Hertz R 410A 143 Johnson Controls Ducted Systems ...