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689670-BIM-A-0311
Limitations
These units must be installed in accordance with the following:
In U.S.A.:
1.
National Electrical Code, ANSI/NFPA No. 70 - Latest
Edition
2.
National Fuel Gas Code, ANSI Z223.1 - Latest Edition
3.
Gas-Fired Central Furnace Standard, ANSI Z21.47 - Latest
Edition
4.
Local building codes, and
5.
Local gas utility requirements
In Canada:
1.
Canadian Electrical Code, CSA C22.1
2.
Installation Codes, CSA - B149.1.
3.
Local plumbing and waste water codes, and
4.
Other applicable local codes.
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.
"
®" Control board w/
screw connectors for T-stat
wiring and Network
Connections
Second model nameplate
inside hinged access
panel
Base rails w/
forklift slots
(three sides)
and lifting
holes
Roof curbs in eight-and
fourteen-inch heights.
Roof curbs for transitioning
from DHB/DUC/DHC/DUS footprint
to the ZU Series footprint
are available
(field-installed accessory)
Compressor access (high-
efficiency compressor w/
Figure 4: Component Location (ZU-A4 Shown)
6
Disconnect location
(optional disconnect switch)
crankcase heater)
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.
The Simplicity® control board used in this product will
effectively operate the cooling system down to 0°F when
this product is applied in a comfort cooling application
for people. An economizer is typically included in this
type of application. When applying this product for
process cooling applications (computer rooms,
switchgear, etc.), please reference applications bulletin
AE-011-07 or call the applications department for
Unitary Products @ 1-877-UPG-SERV for guidance.
Additional accessories may be needed for stable
operation at temperatures below 30° F.
Filter access
(2" or 4"
filter options)
Side entry power
and control wiring
Slide-out drain pan
knockouts
with ¾" NPT
connection
Toolless door
latch
Micro-Channel Aluminum
Tube/Aluminum Fin
Condenser
Slide out motor and
blower assembly for
easy adjustment
and service
Filter drier (solid core)
Belt-drive blower
motor
Power ventor
motor
20-gauge aluminized
steel tubular heat
exchanger for long life
(stainless steel option)
Two-stage gas heating to
maintain warm, comfortable
temperature
Intelligent control board
for safe and efficient
operation
Johnson Controls Unitary Products
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