Johnson Controls A419 Series - Manual (Page 2)

2 A419 Series Electronic Temperature Controls with Display and NEMA 1 or NEMA 4X Watertight Enclosures
Product/Technical Bulletin
Application
IMPORTANT: The A419 Series Temperature
Controls are intended to control equipment under
normal operating conditions. Where failure or
malfunction of an A419 Series Control could lead to
an abnormal operating condition that could cause
personal injury or damage to the equipment or other
property, other devices (limit or safety controls) or
systems (alarm or supervisory) intended to warn of
or protect against failure or malfunction of the A419
Series Control must be incorporated into and
maintained as part of the control system.
The A419 Electronic Temperature Control can be used
to control a wide variety of single-stage refrigeration or
HVAC equipment. Typical applications include:
• retail store display freezers and reach-in coolers
• supermarket display cases for produce/meats
• retail store walk-in coolers and freezers
• boiler operating control (used as a thermostat)
• condenser fan cycling or staging
• cooling tower pump and fan control
• space and return air temperature control
FCC Compliance
This device complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions:
(1) this device may not cause harmful interference,
and (2) this device must accept any interference that
may cause undesired operation.
This equipment has been tested and found to comply
with the limits for a Class A digital device pursuant to
Part 15 of FCC rules. These limits are designed to
provide reasonable protection against harmful
interference when this equipment is operated in a
commercial environment. This equipment generates,
uses, and can radiate radio frequency energy and, if
not installed and used in accordance with the
instruction manual, may cause harmful interference to
radio communications. Operation of this equipment in
a residential area may cause harmful interference, in
which case the users will be required to correct the
interference at their own expense.
Canadian Compliance Statement
This digital apparatus does not exceed the Class A
limits for radio noise emissions from digital apparatus
set out in the Radio Interference Regulations of the
Canadian Department of Communications.
Dimensions
1/2
(13)
2-15/16
(75)
1-9/16
(40) 7/16
(11)
DIN
Rail
2-3/8
2-3/8
(61)
(61)
2-3/8
(61)
7/8
7/8
Sensor
2
(50)
5
(127)
4
(102)
1/4
(6)
9/64
Conduit Hole
MENU
(3.7)
(1/2 in. Trade Size)
(22)
(22)
Figure 2: A419 Temperature Control with
NEMA 1 Enclosure, Dimensions, in./(mm)
A419
MENU
2-1/4
(56)
2-13/16
(71)
6-1/8
(155)
1-3/4
(44)
1-1/16
(27)
(71)
2-13/16
Position the A99 sensor
in the bracket at the bottom of
the A419 NEMA 4X enclosure.
6-5/8
(168)
Figure 3: A419 Temperature Control with
NEMA 4X Watertight, Corrosion-resistant,
Enclosure, Dimensions, in./(mm)