York YLAA Series Installation Operation & Maintenance page 19

FORM 150.72-ICOM6
ISSUE DATE: 12/29/2017
and is easily attached to the evaporator at startup us-
ing the supplied ANSI/AWWA C-606 connector. The
flow switch can be deleted if alternate or existing flow
switch is field supplied.
Heat Recovery Condenser
A partially condensing refrigerant to liquid condenser
recovers heat off both refrigerant circuits and rejects
into a single liquid circuit. Factory installed between
the compressor discharge and the condenser (air) coils
to capture the maximum amount of heat. Capable of
recovering up to 85% total heat of rejection (cooling
load plus work input); temperatures as high as 140°F
(60°C) are possible.
Hydro-Kit
Factory installed Hydro-Kit suitable for water and gly-
col systems with up to 35% glycol at leaving tempera-
tures down to 20°F. The hydro-kit option is available
in a single or dual configuration (dual as standby duty
only), with totally enclosed permanently lubricated
pump motors.
The hydro-kit option comes standard with a balancing
valve, discharge check valve, discharge shutoff valve,
thermal dispersion flow switch, pressure ports, inlet
wye-strainer, bleed and drain valves and frost protection.
Service shut off valves, additional pressure ports and ex-
pansion tanks are optional within the hydro-kit option.
Condenser and Cabinet Options
MCHX Condenser protection against corrosive envi-
ronments is available by choosing any of the following
options. For additional application recommendations,
See FORM 150.12-ES1. (Factory-Mounted)
Post-Coated Dipped MCHX Condenser
The unit MCHX is constructed with post dipped-epoxy
MCHX condenser. This is recommended for seashore
and other corrosive applications (with the exception of
strong alkalies, oxidizers and wet bromine, chlorine
and fluorine in concentrations greater than 100 ppm).
Enclosure Panels (Unit)
Tamper proof Enclosure Panels prevent unauthorized
access to units. Enclosure Panels can provide an aes-
thetically pleasing alternative to expensive fencing.
Additionally, for proper head pressure control, Johnson
Controls recommends the use of Condenser Louvered
Panels for winter applications where wind gusts may
JOHNSON CONTROLS
SECTION 2 – PRODUCT DESCRIPTION
exceed five miles per hour. The following types of en-
closure panels are available:
• Wire Panels (Full Unit) - Consists of welded
wire-mesh guards mounted on the exterior of the
unit. Prevents unauthorized access, yet provides
free air flow. (Factory-Mounted)
• Wire/Louvered Panels - Consists of welded
wire-mesh panels on the bottom part of unit and
louvered panels on the condenser section of the
unit. (Factory-Mounted)
• Louvered Panels (MCHX Condenser Only)
- Louvered Panels are mounted on the sides and
ends of the MCHX condenser for protection.
(Factory-Mounted)
• Louvered Panels (Full Unit) - Louvered panels
surround the front, back, and sides of the unit.
They prevent unauthorized access and visually
screen unit components. Unrestricted air flow
is permitted through generously sized louvered
openings. This option is applicable for any out-
door design ambient temperature up to 115°F
(46°). (Factory-Mounted)
MCHX End Hail Guard
Louvered panel attached to exposed MCHX end. (Fac-
tory-Mounted)
Sound Attenuation
One or both of the following sound attenuation options
are recommended for residential or other similar sound
sensitive locations:
• Compressor Acoustic Sound Blanket - Each
compressor is individually enclosed by an acous-
tic sound blanket. The sound blankets are made
with one layer of acoustical absorbent textile fi-
ber of 5/8" (15mm) thickness; one layer of anti-
vibrating heavy material thickness of 1/8" (3mm).
Both are closed by two sheets of welded PVC,
reinforced for temperature and UV resistance.
(Factory-Mounted)
• Ultra Quiet Fans - Lower RPM, 8-pole fan mo-
tors are used with steeper-pitch fans. (Factory-
Mounted)
Vibration Isolators
Level adjusting, spring type 1" (25.4mm) or seismic
deflection or neoprene pad isolators for mounting un-
der unit base rails. (Field-mounted)
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