2
A19ANC/A19ANF/A19APC Installation Instructions
Optional Constructions
Sensing Elements
See Product Selection Chart for
standard capillary lengths. Other
lengths are available. Contact a
Johnson Controls
representative.
Bulb Well
Copper bulb wells with 1/2 in.
NPT brass connectors are sold
separately. See Product
Selection Chart for ordering
information. For special
applications requiring a
connector made with a different
metal, contact a Johnson
Controls representative for
availability.
Installation
!
WARNING:
Risk of
electrical shock.
Disconnect power supply
before wiring connections
are made to avoid possible
electrical shock.
!
CAUTION:
Risk of
equipment damage.
Disconnect power supply
before wiring connections
are made to avoid damage
to the equipment.
Note:
Use terminal screws
furnished (8-32
1/4 in. binder
head). Do not substitute screws
of a different size. Make all
wiring connections using copper
conductors only, and in
accordance with the local,
national, and regional
regulations.
Indoors, mount the thermostat in
any position by means of three
mounting feet. When the
thermostat will be exposed
directly to the outdoor weather,
mount the thermostat with the
electrical conduit, capillary
fittings, and drain hole facing
downward as illustrated in Fig. 1.
Ambient rating (not bulb
maximums) 140
F (60
C).
Fig. 3
– Bulb well dimensions
IMPORTANT: Do not dent or
deform the sensing bulb of
this control. A dent or
deformation will change the
calibration and cause the
control to cycle at a
temperature lower than the
dial setting.
Where the capillary is exposed
and subject to possible
mechanical damage some
means of protection should be
provided. The capillary outlet is
designed to permit the capillary
to be run through 1/2 in. thin wall
or flexible conduit. Remove the
capillary outlet seal nut. (See
Fig. 4.) Push the bulb and
capillary through a conduit
coupling or suitable hose fitting
and on through the conduit or
hose. By tightening the coupling
to the 1/2 in. female capillary
outlet fitting, the seal around the
capillary will be maintained and
the conduit or hose will be rigidly
attached to the enclosure.
Adjustments
!
WARNING:
Risk of
electrical shock.
To avoid
the risk of electrical shock,
disconnect the power
supply before making any
adjustments to avoid
possible electrical shock.
Product Selection Chart
Product
Number
Range
F (
C)
Differential
F
(C
)
Maximum Allowable
Temp
F (
C)
Capillary Length
Ft. (m)
Bulb Size
Bulb Well
(if required)
A19ANC-1
0 to 150
(-18 to 66)
5
(2.8)
190
(88)
10
(3)
0.290 x 2 ½”
WEL11A-601R
A19ANC-2
100 to 250
(38 to 121)
6
(3.3)
290
(143)
10
(3)
0.290 x 2 ½”
WEL11A-601R
A19ANC-3
200 to 350
(93 to 177)
5
(2.8)
390
(199)
10
(3)
0.366 x 2 ¼”
WEL16A-601R
A19ANF-3
20 to 90
(-6.7 to 32)
2
(1.1)
130
(54)
10
(3)
0.366 x 2 5/8”
WEL16A-601R
A19APC-1
20 to 90
(-6.7 to 32)
3.5 to 14
(1.9 to 7.8)
140
(60)
6
(1.8)
0.375 x 5”
WEL14A-603R
