|
|
Series
20 Wall Mount Thermostat |
□ For heating
equipment control up to 13A 120VAC |
□ Precise
stainless steel temperature sensor
□ Easy to set
□ Nema 4 corrosion
resistant enclosure
□ UL/CSA recognized
The
Quantem Series 20 "single stage" thermostat offers the "Ag
producer" and/or greenhouse grower a simple, yet economical and reliable
control, for regulation of fan motors and/or heaters. The product series is
specifically designed for harsh environments where the ambient is likely to
see high humidity and/or moderately corrosive contaminates. It is ideal for
agricultural applications, such as poultry houses, hog houses, as well as
greenhouses.
It
is simple to install and operate. This wall mount design comes complete with
its own input-output power cord. Plug the control into a 120 (or optional 240)
VAC line and plug the load device (fan or heater) into the grounded socket.
Set the temperature on the large easy to read dial and the series 20 will do
the rest.
A
special low mass, stainless steel, sensing bulb, provides rapid response to
temperature changes. The sensor is mounted to the top of the thermostat's
sealed housing. A flexible mounting and water tight gasketed design that meets
Article 547-4 of the National Electric Code, assure its suitability for a
tough environment.
Operation
of the Series 20 control is by expansion or contraction of liquid in response
to temperature changes. The liquid, contained inside the stainless steel
coiled sensor, activates a diaphragm connected to a precision snap action
switch.
Series
20 is designed for wall mounting. Its unique packaging protects critical
component circuitry against dust and moisture.
|
SPECIFICATION |
Series 20 |
|
Line voltage |
120 or 240VAC, 50/60HZ |
|
Output switching device |
SPST relay 13A at 120VAC (resistive), 10A @ 240VAC, 50VA
inductive, 125VA pilot duty at 120VAC |
|
Control mode |
On/off, differential 2 deg F typical |
|
Temperature range sensor |
40 to 110 deg F (capillary bulb thermostat) |
|
Set point accuracy |
2% full scale |
|
Set point adjustment |
Local set point adjustment (integral) |
|
Operating ambient |
0 to 60 deg C (32 to 140 deg F) |
|
Housing |
Gray, fire retardant, water tight, Nema 4 (Article 547) |
|
Size |
3.1"W x 3.85"H x 1.45"D |
|
Mounting |
Multipoint mounting, including wall mount |
|
Weight |
1.0lb |
|
Approvals |
UL and CSA (120VAC only) |
|
Cord set options |
Supplied as standard 5ft cord length. Also available, 10ft
or 20ft cord length. See "How to order" below |
Ratings
shown below are suitable for most AC (single speed) fan motors, as well as
resistive heater loads. De-rating to 70% of full load rating helps prolong
switching life of control.
|
Electrical rating |
Standard |
Optional |
|
|
120VAC |
240VAC |
|
Full load |
10A |
5A |
|
Locked rotor |
60A |
30A |
|
Non inductive |
13A |
70A |
|
Pilot duty |
125VA |
125VA |
Warning:
This series 20 Thermostat is designed as a regulating control. A back up limit
control is recommended to warn of control failure.
How
to order
|
Example 20-37-420-FS |
20 |
3 (10A @ 120VAC supply) |
7 (Heating) |
420 (40 to 110 F range) |
F (deg F scale) |
S (5ft) |
|
Series identification |
20 |
|
|
|
|
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|
Supply voltage & rating |
|
1 = 5A @ 240VAC |
|
|
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Control mode |
|
|
7 = Heating |
|
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|
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Range |
|
|
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400 = specify |
|
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Scale plate |
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F = deg F |
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Cord set |
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A = Optional 10ft |
Quantem Corporation
Bulletin #20/9/2002
Printed in
