Lattner Boiler Company H.E. Instruction Manual page 48

This bulletin should be used by experienced personnel as a guide to the installation of series 26M controls. Selection
or installation of equipment should always be accompanied by competent technical assistance. We encourage you to
contact Gems Sensors or its local representative if further information is required.
Specifications
Control Design: Solid State components enclosed in clear lexan
plug-in style housing. Housing carries no NEMA ratings.
Contact Design: SPDT (1 form C): One normally open (N.O.)
and one normally closed (N.C.) powered contacts.
Contact Ratings: 10 A @ 120,240 VAC resistive (120°F), 1A @
120, 240 VAC resistive (150°F), 1/3 H.P. @ 120, 240 VAC (120°F)
Contact Life: Mechanical- 5 million operations Electrical-
100,000 operations minimum at rated load.
Supply Voltage: 120, 240 or 24 VAC models: +10% -15% 50/
60 Hz. 208/240 model: 187 Vmin to 255 Vmax. VAC 50/60Hz
Supply Current: Relay energized at 4.4 VA
Secondary Circuit: 12 VAC RMS Voltage on probes. 1.5
milli-amp Current.
Sensitivity: Models operate from 4.7K to 100K maximum
specific resistance.
Temperature: -40 TO 150°F ambient
Terminals: All connections #6-32 screw type terminals with pres-
sure clamps.
Time Delays: Standard – LLCO probe, 3 seconds standard for
lowering level.
Listings: U.L. limit control recognition (353). 240 and 208 volt
units are not U.L. limit control recognized.
3-1/2"
Warrick
Installation and Operation Bulletin
Dimensional Diagram
2-3/8"
2-3/4"
5/8"
®
Series 26M Controls
1. Install octal socket in appropriate enclosure
using two #6 or #8 metal screws.
1A. Install rail mount socket on appropriate
rail (DIN mount) in appropriate enclosure if
applicable.
2. Wire control per wiring diagram, following
N.E.C. and local codes
3. Install control module in socket.
Sensitivities vs Maximum
Probe Wire Distance*
SENSITIVITY
CHARACTER
*
Based on type MTW or THHN
wire, #14 or #16 Awg
1-5/32"
2.0"
1-11/16"
Sheet P/N 100204-1
Installation
SENSITIVITY
DISTANCE
(KOHMS)
(FT)
A 4.7
B 10
C 26
D 50
E 100
2-5/16"
11/64"
Dia.
Form 261
Rev. H
900
600
250
100
50