Honeywell L8151A - Manual
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Table of Contents:
- Page 2 – Specification; Installation; WARNING; Ordering Information
- Page 3 – CAUTION
- Page 5 – Operation and Settings
- Page 6 – Checkout
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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Summary
60-2553—3 2 L8151A SPECIFICATIONS • INSTALLATION • ORDERING INFORMATION Specification IMPORTANT: The specifications given in this publication do not include normal manufacturing tolerances.Therefore, this unit may not exactly match the listedspecifications. Also, this product is tested and cali-brat...
3 60-2553—3 L8151A INSTALLATION IMMERSION WELL MOUNTING NOTE: Immersion well must be ordered separately. For a list of available wells, refer to form 68-0040, Wells andFittings for Temperature Controllers. The boiler manufacturer generally provides a tapping for the immersion well. This tapping shou...
5 60-2553—3 L8151A OPERATION AND SETTINGS Operation and Settings HIGH LIMIT The high limit opens and turns off the burner when the water temperature reaches the setpoint. The high limitautomatically resets after the water temperature drops pastthe setpoint and through the 10 ° F (6 ° C) differential...
