Gems Sensors & Controls 26 Specifications

Series 26
Low Water Cutoff – Standoff Mount

 Meets CSD1 Requirements  Snap-Thru Standoff Mounting
 Non Powered Contacts  Compact Size
 Time Delays Available  Power Outage Feature
 LED Monitoring  U.L. “Limit Control”
 Test Feature
 AC Current Minimizes Electrolysis

Series 26 – General Purpose Control

Designed for boiler low-water cutoff protection. A snap-through standoff mounting
device is available for Series 26 units. Optional Power Outage feature resets after
nuisance outages. Optional reset button is used when device has been deactivated
because of low water condition. Reset is functional only if water has returned to
normal level. Optional Test Feature available allows LLCO circuit to be tested without
draining the water level in the boiler. Built-in 3 second time delay is standard. Up to 90
seconds available for increasing and decreasing levels.

Specifications

WARRICK CONDUCTIVITY SENSORS

Contact Design 1 N.O. & 1 N.C. (1 form C)
Contact Rating 10 amp Resistive 1/3 hp at 120, 240 VAC
Mode of Operation Direct
Sensitivity 0-100K ohm, factory set
Primary Voltage 120 VAC, 240 VAC1, 24 VAC, 208/240 VAC (+10%/-15%) 50/60 Hz
Secondary Voltage 12 VAC, 1.5 mA
Temperature -40°F to +150°F (-40°C to +65°C)
Approvals1 U.L. 353, U.L. 508 File # MP1430
Terminal Style Spade connection
Options Time Delays, Power Outage, Retrofit Plate, Test Feature,

See page E-11 for descriptions

Notes:

1. 240 VAC and 208/240 VAC are not U.L. recognized

LOW WATER CUTOFF

Applications

• Low-Water Cutoff • Single-Level Service

• Point Level • Alarms

• Valve Control • Pump Control

Dimensions

How to Order

Use the Bold characters from the chart below to construct a product code.

26 X X X X X XX XX

1. Series
26 General Purpose;

2. Sensitivity
A 4.7K; B 10K; C 26K; D 50K; E 100K

3. Supply Voltage
1 120 VAC; 2 240 VAC; 3 24 VAC; 8 208/240 VAC

4. Standoff Style
A 1/16˝ Panel; B 1/8˝ Panel; C Screw mount; D Retrofit

5. Enclosure
0 None; 1 NEMA 11; 4 NEMA 4

6. Option Package
See page E-11, Chart B for code letter

7. Time Delay (decreasing level) Option
03-90 seconds; Blank 3 seconds

8. Time Delay (increasing level) Option
00-90 seconds; Blank 0 seconds

Notes:

1. Standoff Style D only.

Socket Details and Option Availability
are located on web site.

1

1

Wiring

L1 L2

LLCO

RESET

A.C. SUPPLY

TRANSFORMER

G

NC

C

NO

RESET BUTTON
OPTIONAL

LOW LEVEL CUTOFF PROBE

REFERENCE PROBE

TANK, IF METALLIC,
MAY BE USED
IN PLACE OF
REFERENCE PROBE.

E-8

Visit www.GemsSensors.com for most current information.