
Form 261
Bulletin P/N 100204-1
Rev. K
Warrick® Series 26M Control
Installation and Operation Bulletin
This bulletin should be used by experienced personnel as a guide to the installation of the Series 26M Control. Selection
or installation of equipment should always be accompanied by competent technical assistance. We encourage you to
contact Gems Sensors or a representative if further information is required.
Specifications
Control Design:
plug-in style housing. Not NEMA rated.
Contact Design:
(input Power L1 connected to common of relay contacts)
Contact Ratings:
@120/240VAC resistive (150°F), 1/3 HP @ 120/240-VAC (120°F).
Contact Life:
Electrical -100,000 operations minimum at rated load
Supply Voltage:
+10%/-15% of nominal, 50/60 Hz. Factory Configured: 208V/240V
Model: 187V Min to 242V Max, VAC 50/60 Hz
Power Consumption:
gized ~ 4.4 VA.
Secondary Circuit:
pere source capability.
Sensitivity:
Ohms
Operating Ambient Temperature Range:
+65°C)
Terminals:
Time Delays:
ing level. Optional 0-90 sec. time delays in 1-sec. increments for
rising and falling.
Listings:
24VAC and 120VAC Line Powered units only (220VAC, 240VAC,
208/240VAC units not rated).
Control carries U.L. Limit Control Listing (UL-353) for
Solid-state components enclosed in a clear Lexan
1 SPDT (1 form C), powered contacts
10A@120/240-VAC resistive (120°F), 1A
Mechanical -5 million operations
Factory Configured: 24V, 120V, 220V, or 240V AC
24/120/220/240-VAC with both relays ener-
2.3 VAC RMS voltage on probes, < 1 milliam-
Factory programmed to 4.7K, 10K, 26K, 50K, or 100K
40°F to +150°F (-40°C to
-
All connections made with screw-clamp terminals.
Standard LLCO, 0.5 sec. on rising level, 3 sec. on fall-
Installation
1. Install octal socket in appropriate enclosure
using two #6 or #8 screws.
2. Install rail mount socket on appropriate rail
(DIN mount) in appropriate enclosure if applicable.
3. Wire control per wiring diagram following
N.E.C and local codes.
4. Install control module in socket.
Sensitivity vs. Maximum
Probe Wire Distance*
SENSITIVITY
C
HARACTER
A 4.7 900
B 10 600
C 26 250
D 50 100
E 100 50
∗ Based on type MTW or THHN wire,
#14 or #16 AWG
SENSITIVITY
(K-OHMS)
Distance
(FT)
Dimensional Drawing
Mount the octal socket
(base) on rigid vertical
or horizontal surface
using #6 or #8 screws.
The control should be
mounted within an
enclosure of proper
NEMA integrity.
Torque all terminals and socket mounting screws to 7 in-lb max.
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Wiring Diagram
Operation
AUTOMATIC RESET
When the liquid rises to the electrode on terminal LLCO, the
control energizes, changing state of the load contacts. (LED
will be lit) The control remains energized until the liquid
level recedes below electrode on terminal LLCO. The control then de-energizes, (LED will not be lit) returning load
contacts to original state. Unless otherwise specified, there
is a three second time delay on decreasing level. Liquid
must be below probe on terminal LLCO for a full three seconds before control de-energizes.
MANUAL RESET
across reset terminals) When the liquid rises to the electrode on terminal LLCO, the control will remain deenergized until the pushbutton is depressed. Upon Reset
Switch activation, the control will energize, (LED will be lit)
changing the state of the contacts. The control remains
energized until the liquid level recedes below electrode on
terminal LLCO. The control then de-energizes, (LED will not
be lit) returning load contacts to their original state. Unless
otherwise specified, there is a three second time delay on
decreasing level. Liquid must be below probe on terminal
LLCO for full three seconds before control de-energizes.
Operator to wait 5 full seconds after power is appli
pressing reset switch (if manual reset is used).
MANUAL RESET OPTIONAL POWER OUTAGE FEA-
(Normally closed pushbutton across reset terminals)
TURE
Control will auto-recover from a power loss. With liquid present on LLCO electrode at a power outage event, the control will de-energize and will automatically re-energize upon
return of power with liquid present on the probe at powerup. However, if loss of liquid is sensed on power-up, the
control will remain de-energized until liquid again rises to
electrode and pushbutton is depressed. The control will not
attempt to auto-recover from a power outage if no liquid
was present on the probe at power loss.
TEST FEATURE
Allows LLCO circuit to be tested without the need to drop
the water level in the boiler to create a dry probe condition.
Holding down the reset button for 3 seconds will allow the
LLCO circuit to trip, simulating a dry probe. The controller
will return to normal operation once the reset button is
pressed a second time.
(Reset Switch terminals not wired)
(Normally closed pushbutton installed
ed before
I
LED STATUS INDICATOR
on the control will either be on or off depending on the
controller state. On-board microprocessors continuously
monitor for fault conditions. In the event a fault is detected,
the LED will blink a pattern indicating the fault type. If you
experience an inoperable control and the LED is blinking,
attempt to leave the control in the blinking state and contact the factory for assistance.
n normal operation, the LED
26MXXXXX-XX-XX
Time Delay Increasing Level:
0-90
seconds, Blank = 0 seconds.
Time Delay Decreasing Level:
0-90
seconds, Blank = 3 seconds.
Optional Character:
Enclosure: 0-
None, 1-NEMA
see Chart
1, 2
NEMA 4
Socket Style: A
Mount, M-NONE, Module Only
Supply Voltage:
-11 Pin Octal, B-Din
1-120VAC (+10%/
-15%), 2-240VAC (+10%/-15%), 324VAC (+10%/-15%), 5-220VAC
(+10%/-15%), 8-208/240VAC (187
to 242 VAC absolute Range)
Mode/Sensitivity: A
-26K, D-50K, E-100K
C
N.C.
Pushbutton
-4.7K, B-10K,
Power
Outage
Test
Feature
A X X X
B X
C X
E X
F X X
Y X X
Z X X
0 No Option
-
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