1 60-2553—3
L8151A
Triple Aquastat
®
Relay
J. H. • Rev. 1-95 • ©Honeywell Inc. 1995 • Form Number 60-2553—3
The L8151A is a remote bulb controller for use
with hydronic heating systems that include domes-
tic hot water service.
■ Provides high limit, low limit, and circulator control
for maintaining boiler temperatures.
■ Can provide multizone control by using a separate
thermostat and R845 Relay for each zone.
■ An internal transformer powers the thermostat cir-
cuit.
■ Shielded capillary allows convenient mounting.
■ Consists of a diaphragm powerhead and micro switch
assembly that responds to temperature changes in
the boiler water.
CONTENTS
Specifications ................................................. 2
Ordering Information ..................................... 2
Installation ..................................................... 2
Operation and Settings................................... 5
Checkout......................................................... 6
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