York YLUA0078 Installation Operation & Maintenance page 18

SECTION 2 – PRODUCT DESCRIPTION
Control Options
Ambient Kit (Low) – Units will operate to (stan-
dard) 32°F (-4°C). This accessory includes all neces-
sary components to permit condensing unit operation
to 0°F (-18°C). (This option includes the Discharge
Pressure Transducer / Readout Capa bility option.)
For proper head pressure control in applications be-
low 25°F (-4°C) where wind gusts may exceed 5 mph
(8 km/h), it is recommended that Optional Condenser
Louvered Enclosure Panels also be included. (Factory
mounted).
Building Automation System Interface – The factory
addition of a Printed Circuit Board to accept a 4 mA to
20 mA, 0 VDC to 10 VDC, or contact closure input to
reset the discharge air temperature from a Building Au-
tomation System. (Fac tory Mounted). (The standard
control panel can be directly connected to a YORK
Building Automated System via the standard on board
RS485 communication port.)
Language Lcd And Keypad Display – Spanish,
French, German, and Italian unit LCD controls and
keypad display avail able. Standard language is Eng-
lish.
Discharge Pressure Transducers And Readout Ca-
pability – The addition of pressure trans ducers allows
models to sense and display discharge pressure. (This
option as included with either the low or high ambient
kits). (Factory mounted).
Suction Pressure Transducers And Readout Ca-
pability – The addition of suction transduc ers allows
models to sense and display suction pressure. (Factory
mounted).
Suction Temperature Readout – The addition of
tem perature sensors allow models to sense and display
suction temperature. (Factory mounted).
18
Compressor and Piping Options
Chicago Code Relief Valves – Unit will be provided
with relief valves to meet Chicago code requirements.
(Factory mounted).
Hot Gas By-Pass – Permits continuous, stable opera-
tion at capacities below the minimum step of compres-
sor unloading to as low as 5% capacity (depending on
both the unit and operating conditions) by introducing
an artificial load. Hot gas by-pass is available installed
on refrigerant system 1 or on both systems of two cir-
cuited units. (Factory mounted).
Service Isolation Valve – Service suction and dis-
charge (ball type) isolation valves are added to unit
per system. This option also includes a system high
pressure relief valve in com pliance with ASHRAE 15.
(Factory mounted).
Condenser and Cabinet Options
Condenser coil protection against corrosive environ-
ments is available by choosing any of the following
options. For additional application recommendations,
refer to Form 150.12-ES1. (Factory mounted).
Pre-Coated Fin Condenser Coils – The air-cooled
condenser coils are constructed of black epoxy-coated
aluminum fins. This can provide corrosion resistance
comparable to copper-fin coils in typical seashore loca-
tions. Either these or the post-coated coils (below), are
recommended for units being installed at the seashore
or where salt spray may hit the unit.
Post-Coated Dipped Condenser Coils – The unit is
built with dipped and cured condenser coils. This is
another choice for seashore and other corrosive appli-
cations (with the exception of strong alkalis, oxidizers
and wet bromine, chlorine and fluorine in concentra-
tions greater than 100 ppm).
Copper-Fin Condenser Coils – The unit constructed
with condenser coils which have copper fins. (This is
not recommended for units in areas where they may be
exposed to acid rain).
Enclosure Panels (Unit) – Tamperproof Enclosure
Panels prevent unauthorized access to units. Enclosure
Panels can provide an aesthetically pleasing alterna-
tive to expensive fencing. Additionally, for proper head
pressure control, YORK recommends the use of Con-
denser Louvered Panels for winter applications where
wind gusts may exceed 5 mph (8 km/h).
FORM 150.73-NM1
ISSUE DATE: 09/04/2020
JOHNSON CONTROLS