Johnson Controls ZZ Series, Installation Manual

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5834853-YIM-B-0320
Johnson Controls Ducted Systems 7
Refer to unit application data found in this document.
After installation, gas fired units must be adjusted to obtain a
temperature rise within the range specified on the unit rating
plate.
If components are to be added to a unit to meet local codes,
they are to be installed at the dealer’s and/or customer’s
expense.
Size of unit for proposed installation should be based on heat
loss/heat gain calculation made according to the methods of Air
Conditioning Contractors of America (ACCA).
This furnace is not to be used for temporary heating of buildings
or structures under construction.
Location
Use the following guidelines to select a suitable location:
1.
Unit is designed for
outdoor installation only
.
2. Condenser coils must have an unlimited supply of air.
Where a choice of location is possible, position the unit on
either north or east side of building.
3. Suitable for mounting on roof curb.
4. For ground level installation, use a level concrete slab with
a minimum thickness of 4 inches. The length and width
should be at least 6 inches greater than the unit base rails.
Do not tie slab to the building foundation.
5. Roof structures must be able to support the weight of the
unit and its options/accessories. Unit must be installed on a
solid, level roof curb or appropriate angle iron frame.
6. Maintain level tolerance to 1/2” across the entire width and
length of unit.
Clearances
All units require particular clearances for proper operation and
service. Installer must make provisions for adequate
combustion and ventilation air in accordance with section 5.3 of
Air for Combustion and Ventilation of the National Fuel Gas
Code, ANSI Z223.1 – Latest Edition (in U.S.A.), or Sections 7.2,
7.3, or 7.4 of Gas Installation Codes, CSA-B149.1 (in Canada) -
Latest Edition, and/or applicable provisions of the local building
codes. Refer to Table 4 for clearances required for combustible
construction, servicing, and proper unit operation.
Rigging And Handling
Exercise care when moving the unit. Do not remove any packaging
until the unit is near the place of installation. Rig the unit by attaching
chain or cable slings to the lifting holes provided in the base rails.
Spreader bars, whose length exceeds the largest dimension across
the unit,
MUST be used across the top of the unit.
Units may be moved or lifted with a forklift. Slotted openings in
the base rails are provided for this purpose.
LENGTH OF FORKS MUST BE A MINIMUM OF 60 INCHES.
Table 1: ZZ07-14 Unit Limitations
Model
Size
(Tons)
Unit Voltage SCCR (kVA)
Unit Limitations
Applied Voltage Outdoor DB Temp
Min Max Max (°F)
ZZ
07
(6)
208/230-3-60 5 187 252 125
460-3-60 5 432 504 125
ZZ
08
(7.5)
208/230-3-60 5 187 252 125
460-3-60 5 432 504 125
ZZ
09
(8.5)
208/230-3-60 5 187 252 125
460-3-60 5 432 504 125
ZZ
12
(10)
208/230-3-60 5 187 252 125
460-3-60 5 432 504 125
ZZ
14
(12.5)
208/230-3-60 5 187 252 125
460-3-60 5 432 504 125
Excessive exposure of this furnace to contaminated
combustion air will result in safety and performance
related problems. Typical contaminates include:
permanent wave solution, chlorinated waxes and
cleaners, chlorine based swimming pool chemicals,
water softening chemicals, de-icing salts or chemicals,
carbon tetrachloride, Halogen type refrigerants, cleaning
solvents (e.g. perchloroethylene), printing inks, paint
removers, varnishes, hydrochloric acid, cements and
glues, anti-static fabric softeners for clothes dryers,
masonry acid washing materials.
Do not permit overhanging structures or shrubs to
obstruct condenser air discharge outlet, combustion air
inlet or vent outlets.
If a unit is to be installed on a roof curb other than a
Ducted Systems roof curb, gasketing must be applied to
all surfaces that come in contact with the unit underside.
Before lifting, make sure the unit weight is distributed
equally on the rigging cables so it will lift evenly.