Honeywell TRIPLEAQUASTAT L8151A User Manual

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

Honeywell TRIPLEAQUASTAT L8151A Specifications

General

Brand	Honeywell
Model	TRIPLEAQUASTAT L8151A
Category	Relays
Language	English

Summary

Specifications

Installation

Immersion Well Mounting

Instructions for mounting the immersion well and bulb into the boiler or tank tapping.

Mounting the Case

Guidance on selecting a convenient location for the Aquastat case and ensuring capillary reach.

Wiring

Detailed instructions on wiring the L8151A Aquastat Relay, including terminal usage and connection methods.

Ordering Information

Operation and Settings

High Limit Control

Describes how the high limit functions to turn off the burner when water reaches the setpoint.

Low Limit and Circulator Control

Explains the function of the low limit circuit and circulator control based on temperature changes.

Thermostat Anticipator Setting

Instruction to set the thermostat heat anticipator to 0.2A for proper system operation.

Checkout