Johnson Controls ZY Series - Limitations

Figure 5: Supply and return air ducts
Item Description
A Supply air duct
B Return air duct
7. If an optional return air smoke detector is
installed, you must move the return air sensor
from the factory shipped position (upside
down) to the working position (right side up).
Then slide the flex tube over the stub and
tighten, see Figure 7.
Figure 6: Return air smoke detector - shipped
position
Item Description
A Flex tube secured to the bracket
B Return air sensor
C Controller
D Wire tie
Figure 7: Return air smoke detector - working
position
Item Description
A Controller
B Return air sensor
C Flex tube in the working position
Limitations
These units must be installed in accordance with the
following:
In U.S.A.:
• National Electrical Code, ANSI/NFPA No. 70 -
Latest Edition
• National Fuel Gas Code, ANSI Z223.1 - Latest
Edition
• Gas-Fired Central Furnace Standard, ANSI
Z21.47a. - Latest Edition
• Local building codes, and
• Local gas utility requirements
In Canada:
• Canadian Electrical Code, CSA C22.1
• Installation Codes, CSA - B149.1
• Local plumbing and waste water codes, and
• 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.
INSTALLATION MANUAL ZY SERIES 3-10ton 60 Hertz R-410A 11
Johnson Controls Ducted Systems