Pentair DigiTrace AMC-1H User manual

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AMC-1H
AMBIENT-SENSING THERMOSTAT FOR HAZARDOUS LOCATIONS INSTALLATION INSTRUCTIONS
THERMAL MANAGEMENT SOLUTIONS EN-DigiTraceAMC1H-IM-H5691101/13
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DESCRIPTION
The AMC-1H thermostat is designed for controlling freeze-
protection heat-tracing circuits in hazardous locations. The
thermostat responds to ambient temperature changes. The
AMC-1H can be used to control a heat-tracing circuit directly (see
Figure 1 on back page) or it can be used to control a contactor coil
(see Figure 2).
APPROVALS
Class I, Div. 1 and 2, Groups B, C, D
Class II, Div. 1 and 2, Groups E, F, G
Class III
Hazardous locations
SPECIFICATIONS
Enclosure NEMA 4, 7, 9, lacquer-coated cast-aluminum
housing, stainless-steel hardware
Entries One 3/4 in. NPT conduit hub
Set point range 15°F to 140°F (–9°C to 60°C)
Sensor exposure
limits
–40°F to 160°F (–40°C to 71°C)
Housing exposure
limits
–40°F to 140°F (–40°C to 60°C)
Switch SPDT
Electrical rating 22 A at 125/250/480 Vac
Accuracy ±6°F (±3.3°C)
Deadband 2°F to 12°F (1.1°C to 6.7°C) above actuation
temperature
Set point
repeatability
±3°F (±1.7°C)
Sensor type Fluid-filled (silicone) bulb and 9 ft (2.7 m)
capillary
Sensor material 300 series stainless steel
Connection
terminals
Screw terminals, 10–14 AWG (2–5 mm2)
This component is an electrical device. It must be installed
correctly to ensure proper operation and to prevent shock or
fire. Read these important warnings and carefully follow all the
installation instructions.
Component approvals and performance are based on the use of
specified parts only. Do not use substitute parts or vinyl electrical
tape to make connections.
WARNING:
4.0 w (102 mm)
1.2 in (30 mm)
2.0 in
(50 mm)
3⁄4 in NPT
conduit entry
Terminal
block
0.3 in (9 mm)
4.0 in (102 mm)
4.5 in (114 mm) Ø.28 in (7 mm)
mounting
hole (4X)
4.5 in
(114 mm)
6.6 in
(168 mm)
4.0 in
(102 mm)
8.0 in
(202 mm)
Adjusting
knob
Removable
knob cover

2 / 2THERMAL MANAGEMENT SOLUTIONS EN-DigiTraceAMC1H-IM-H5691101/13
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the right to change specifications without prior notice.
Figure 2. Controlling a contactorFigure 1. Heat-tracing control
CNO NC
For switching heat-tracing loads greater than 22 A
or switching multiple heat-tracing circuits.
Ø
G
G
N
ØØ
Heating
Cable
Power
connection
Braid
Control
thermostat
Control
thermostat
GFEPD
C
C
NONC
NONC
or 208-V or 240-V supply – 240-V heater
120-V supply – 120-V heater
277-V supply – 240-V heater
ØC
G
C
NANBNCØB
ØA
120-V or
277-V
coil
Braid
120-V supply – 120-V heater or
277-V supply – 240-V heater
GFEPD
Heating
cable C
Heating
cable B
Heating
cable A
WIRING
INSTALLING THE THERMOSTAT
1. Verify that the thermostat
is suitable for the area
where it is to be installed.
2. Check the line voltage and
the heat-tracing load to
ensure that the thermostat
ratings are not exceeded.
3. Mount the unit in a position that prevents condensation from
draining into the enclosure from the connecting conduit (see
diagram above).
POSITIONING
4. Mount ambient-sensing units in the area exposed to the
coldest temperature and the most wind. Do not mount on the
side of a warm building or in a location that is exposed to
warm air currents or direct sunlight.
SETTING AND ADJUSTING
5. Set the thermostat dial to the desired temperature and finish
wiring.
Conduit
drain