York R-410A ZH/ZJ/ZR Series Manuel D’Utilisation
528150-YTG-G-1210
Johnson Controls Unitary Products
7
actuators have an adjustable auxiliary end-switch for
optional power exhaust control.
optional power exhaust control.
• VAV or Simplicity® Intelli-Comfort™ control, a
factory-installed dry bulb sensor determines if outdoor
air temperature is low enough to provide free-cooling
operation. (Field-installed humidity sensors for either
outdoor air or outdoor & return air streams are available
for single enthalpy and differential enthalpy
configurations, respectively.)
air temperature is low enough to provide free-cooling
operation. (Field-installed humidity sensors for either
outdoor air or outdoor & return air streams are available
for single enthalpy and differential enthalpy
configurations, respectively.)
• Slab Economizer for Energy Recovery Ventilators-
(With barometric relief and Fresh Air Hood) - The
economizer is provided with a single enthalpy input. The
economizer is 2% low leakage type, and is shipped
installed and wired. The economizer has spring return,
fully modulating damper actuators and is capable of
introducing up to 100% outdoor air. As the outdoor air
intake dampers open, the return air dampers close. The
changeover from mechanical refrigeration to
economizer operation is regulated by the standard
single enthalpy input. To meet regulated air standards,
the economizer control accepts an optional CO
economizer is provided with a single enthalpy input. The
economizer is 2% low leakage type, and is shipped
installed and wired. The economizer has spring return,
fully modulating damper actuators and is capable of
introducing up to 100% outdoor air. As the outdoor air
intake dampers open, the return air dampers close. The
changeover from mechanical refrigeration to
economizer operation is regulated by the standard
single enthalpy input. To meet regulated air standards,
the economizer control accepts an optional CO
2
input
for
demand ventilation.With single enthalpy input, the
economizer control monitors outdoor air. The dual
enthalpy kit provides a second input used to monitor the
return air. With a dual input kit installed, the economizer
control compares the values of the two enthalpy or
temperature inputs and positions the dampers to
provide the maximum efficiency possible.
enthalpy kit provides a second input used to monitor the
return air. With a dual input kit installed, the economizer
control compares the values of the two enthalpy or
temperature inputs and positions the dampers to
provide the maximum efficiency possible.
• Power Exhaust (Downflow only) - This accessory
installs in the unit with a down flow economizer.
• Motorized Outdoor Air Damper - The motorized outdoor
air damper includes a slide-in/plug-in damper assembly
with an outdoor air hood and filters. The outdoor air
dampers open to the preset position when the indoor fan
motor is energized. The damper has a range of 0% to
100% outdoor air entry. Factory installed option or field
installed accessory.
with an outdoor air hood and filters. The outdoor air
dampers open to the preset position when the indoor fan
motor is energized. The damper has a range of 0% to
100% outdoor air entry. Factory installed option or field
installed accessory.
• Alternate Indoor Blower Motor - For applications with
high static restrictions, units are offered with optional
indoor motors that provide higher static output and/or
higher airflow, depending upon the installer’s needs.
indoor motors that provide higher static output and/or
higher airflow, depending upon the installer’s needs.
• Variable Air Volume (VAV; 6-1/2 through 12-1/2 ton,
only - A factory-installed variable frequency drive (VFD),
mounted in the Blower Access compartment, is used to
control the speed of the indoor blower motor in order to
maintain a constant static pressure in the supply duct. A
pressure transducer and VAV control board are mounted
inside the control box. The drive comes completely wired
and pre-programmed from the factory.
mounted in the Blower Access compartment, is used to
control the speed of the indoor blower motor in order to
maintain a constant static pressure in the supply duct. A
pressure transducer and VAV control board are mounted
inside the control box. The drive comes completely wired
and pre-programmed from the factory.
An optional, factory-installed manual bypass switch
available with factory-installed VFD can be found in the
Blower Motor Access compartment. The switch can be
used to either route power to the VFD for modulating
control of the blower motor, to bypass the drive and
available with factory-installed VFD can be found in the
Blower Motor Access compartment. The switch can be
used to either route power to the VFD for modulating
control of the blower motor, to bypass the drive and
operate the motor at full speed, or to power the drive (and
not the motor) for diagnostic purposes.
not the motor) for diagnostic purposes.
Due to space limitations, VAV is not available with any of
the factory-installed BAS options, but is available with
'BAS-ready' models. Terminal blocks are provided in the
control box for field wiring of the customer-installed BAS.
the factory-installed BAS options, but is available with
'BAS-ready' models. Terminal blocks are provided in the
control box for field wiring of the customer-installed BAS.
A 'VFD-ready' option provides the provisions for a
customer-installed drive. The unit comes with a mounting
bracket installed in the Blower Access compartment which
may accommodate other vendor's drives depending on
their size. In order to utilize the unit's mounting bracket,
the maximum recommended drive dimensions are limited
to approximately 9" H x 5" W x 7.5" D.
customer-installed drive. The unit comes with a mounting
bracket installed in the Blower Access compartment which
may accommodate other vendor's drives depending on
their size. In order to utilize the unit's mounting bracket,
the maximum recommended drive dimensions are limited
to approximately 9" H x 5" W x 7.5" D.
If the drive will not fit in the allotted space, then it will have
to be mounted elsewhere; either within the building on a
perpendicular wall which is not subjected to excessive
temperature, vibration, humidity, dust, corrosive gas,
explosive gas, etc., or within an appropriate enclosure
rated for outside installation to safeguard against
moisture, dust and excessive heat. A terminal block
located in the control box is provided for field connection
of the VFD controls.
to be mounted elsewhere; either within the building on a
perpendicular wall which is not subjected to excessive
temperature, vibration, humidity, dust, corrosive gas,
explosive gas, etc., or within an appropriate enclosure
rated for outside installation to safeguard against
moisture, dust and excessive heat. A terminal block
located in the control box is provided for field connection
of the VFD controls.
• Aluminized Steel Gas Heat Exchanger - For
applications in non-corrosive environments.
• Stainless Steel Gas Heat Exchanger - For applications
in corrosive environments, this option provides a full
stainless steel heat exchanger assembly.
stainless steel heat exchanger assembly.
• Stainless Steel Drain Pan - An optional rust-proof
stainless steel drain pan is available to provide years of
trouble-free operation in corrosive environments.
trouble-free operation in corrosive environments.
• Electric Heaters - 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.
base units. All heaters are intended for single point power
supply.
• Disconnect Switch - 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. Factory installed option only.
provided. For cooling only units, a switch sized to the
largest electric heat available for the particular unit is
provided. Factory installed option only.
• Convenience Outlet - (Non-Powered/Powered) - 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. Factory installed option only.
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. Factory installed option only.
• Smoke Detectors - The smoke detectors stop operation
of the unit by interrupting power to the control board if
smoke is detected within the air compartment. Available
for both the supply and/or return air configurations.
smoke is detected within the air compartment. Available
for both the supply and/or return air configurations.
• Filters - 2” Pleated MERV 7 or 4” Pleated MERV 13 are
available to meet LEED requirements. A 2” Throwaway is
shipped as standard.
shipped as standard.