Johnson Controls R-410A Manuale Utente

505430-BTG-A-0309

Johnson Controls Unitary Products

7

• Must cycle to allow cooling operation down to 40°F.

• Solid core filter-drier(s) ship loose for field installation.

• Liquid and suction line service valves with gauge ports.

• Suction and discharge line service ports accessible 

from unit. Ports capped for leak prevention.

• Liquid line magnetic check valves

• Holding charge of R410A refrigerant.

• Single-point connection electrical power.

• Nominal unit electrical characteristics shall be _____ v, 

3-ph, 60 Hz. The unit shall be capable of satisfactory 
operation within voltage limits of ____ v to _____ v.

• Condenser fan motors and secondary of transformers 

shall be grounded.

• All 24-volt control circuit, powered by a 24 volt 

transformer(s) and protected by a resettable breaker.

• Conventional thermostat must provide operation for 

both condensing units and heat pumps without an “O” 
output from the thermostat.

• Low voltage terminal strip for simple hook-up.

• Compressor motor protection shuts down unit for motor 

over-current, over-temperature or low voltage 
conditions.

• Safety lockouts provide reset capability at the space 

thermostat or base unit should any of the following 
standard safety devices trip and shut off compressor:

a. Loss-of-charge/Low-pressure switch.

b. High-pressure switch.

c. Control board diagnostics and fault code display.

d. Safety lockouts send a 24 volt signal to the control

board's "X" terminal, allowing notification to the user
via the thermostat fault light (if present).

e. Control board shall retain last 5 fault codes in non-

volatile memory, which will not be lost in the event of a
power loss. An LED (light-emitting diode) indicator
flashes a fault code that indicates which safety switch
has tripped.

• Factory-installed, internally mounted.

• Accessible from outside the unit.

• NEC and UL approved non-fused switch.

• Provides power off lockout capability.

• Factory-installed, internally mounted.

• Accessible from outside the unit.

• 115V, 15 amp GFI receptacle with independent fuse 

protection.

• Required voltage provided by factory-installed step-

down transformer or field supplied 115v circuit.

• Standard operation down to 40 °F without a low 

ambient kit.

• Operation down to 0°F with a field-installed low ambient 

kit accessory. The controller modulates the fan motor 
speed in response to liquid line temperature or 
pressure.

Factory or field installed decorative grille shall be placed on 
the units to protect condenser coil after installation.

Field installed hail guard package shall protect coils against 
damage from hail and other flying debris. 

Special phenolic coating available as a factory option on both 
outdoor and indoor coils.

• Covered by a 1-year limited parts warranty on the 

complete unit and 5-year on compressor(s).

• In current production with published literature available 

to check performance, limitations, specifications, power 
requirements, dimensions, operation and appearance.

• Indoor unit shall be equipped with a V-belt drive option 

that will permit the blower RPM to be adjusted to meet 
the CFM requirements of the air delivery system. (Refer 
to Technical Guide for Airflow Capabilities.)

• Exterior panels of 18 gauge steel, finished with baked 

enamel to provide a long lasting quality appearance

• Removable panels to provide easy access to the 

internal components for maintenance and service on 
condensing units, heat pumps and air handlers

• AIr handling units must have a filter rack that accepts 

both 2” and 4” filters.

• The dimensions of each unit shall not exceed those 

specified in the manufacture’s literature.