Honeywell L4189A Water Heater User Manual


 
PRODUCT DATA
68-0061—1
L4188A,B; L4189A,B; L6188A-C;
L6189A-C Aquastat
®
Controllers
APPLICATION
Aquastat
®
Controllers are bulb-type providing operating or
limit control of water temperature in hot water heating systems
and water heaters.
FEATURES
L4188 and L4189 provide spst switching for high and
low limit control.
L6188 and L6189 provide spst switching for low limit
and circulator control.
L4188, L6188 models are direct-mounted.
L4189, L6189 models are remote bulb.
Diaphragm-operated switch breaks on temperature
rise (spst and normally closed spdt contacts).
Compact controller case for application flexibility.
3/16 in. diameter bulb for faster response.
All models available with or without setting knob.
Models without knob are adjusted with screwdriver.
Choice of manual or auto reset. Auto reset models
available with fixed or adjustable differential.
1/4 in. male quick-connects standard; combination
screw and 1/4 in. quick-connects available.
Field adjustable high or low limit stop available.
Bracket for surface mounting available on remote bulb
models.
Capillary on remote bulb models available in several
lengths.
Immersion well with 1/2 in. NPT spud available as
accessory.
Direct Mount with
Setting Knob
Contents
Application......................................................................... 1
Features ............................................................................ 1
Specifications .................................................................... 2
Ordering Information ......................................................... 2
Installation ......................................................................... 4
Wiring ................................................................................ 6
Operation........................................................................... 7
Adjustments....................................................................... 7
Checkout ........................................................................... 8
Remote Bulb with
Screwdriver Slot