Low Nox Option; Stainless Steel Drain Pan; Electric Heaters; Disconnect Switch - York ZT SERIES Technical Manual

Low NOx option

Factory or field-installed option
For units with gas furnaces in locations where codes require that the Oxides of Nitrogen emissions from the furnace be below
40 Nano grams per joule. The low NOx option is available for 3 to 5 ton units only.

Stainless steel drain pan

Factory option
An optional rust-proof stainless steel drain pan is available to provide years of trouble-free operation in corrosive environments.

Electric heaters

Factory or field-installed option
The electric heaters range from 3kW to 54kW and are available in all the voltage options of the base units. All heaters are
intended for single point power supply. Field installed kits: cooling units include an adapter panel for easy installation of the
electric heaters. Necessary hardware and connectors are included with the heaters. All heaters are intended for single point
power supply.

Disconnect switch

Factory option
For gas heat units and cooling units with electric heat, a HACR breaker sized to the unit is provided. For cooling only units, a
switch sized to the largest electric heat available for the particular unit is provided.
Convenience outlet
Factory option
Non-powered and powered convenience outlets are available. This option locates a 120V single-phase GFCI outlet with cover,
on the corner of the unit housing adjacent to the compressors. The non-powered option requires the installer to provide the
120V single-phase power source and wiring. The powered option is powered by a stepdown transformer in the unit.
Smoke detectors
Factory or field-installed option
The smoke detectors stop operation of the unit and provide a fault message to the control board. Smoke detectors are
available for both the supply and/or return air configurations.
Factory-installed smoke detectors may be subjected to extreme temperatures during off times due to outside
air infiltration. These smoke detectors have an operational limit of -4°F to 158°F. Smoke detectors installed in
areas that could be outside this range will have to be relocated to prevent false alarms.
CO sensor
2
Field-installed option
This kit senses CO levels and automatically overrides the economizer when levels rise above the preset limits.
2
Filters
Factory or field-installed option
2-inch Pleated MERV 8 or 4-inch Pleated MERV 13 are available to meet LEED requirements. A 2-inch throwaway is shipped
as standard.
Metal frame filter kit
Field-installed option
A metal frame with polyester filter medium is available.
Coil guard
Factory or field-installed option
Customers can purchase a coil guard to protect the condenser coil from damage. Additionally, this kit stops animals and
foreign objects from entering the space between the inner condenser coil and the main cabinet. This is not a hail guard kit.
Johnson Controls Ducted Systems
5167821-YTG-K-1118
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