Honeywell Aquastat L8148A User Manual

PRODUCT DATA
60- 2278- 9
® U.S. Registered Trademark
Copyright © 2001 Honeywell • All Rights Reserved
L8148A,E,J
Aquastat® Relays
APPLICATION
The L8148 Aquastat® Relays are immersion type hydronic
controllers that combine high limit protection with switching
relay control of burner and circulator motors.
FEATURES
• All models are used with a 24 Vac thermostat.
• Models include special terminals for adding remote,
low limit temperature control.
• L8148E,J have terminals for adding zone valve system
wiring.
• L8148E models are available with plug for connecting
Aquastat¨ Relay directly to D892/M892 Vent Dampers.
• All devices include transformer to provide power for
the low voltage control circuit. Different models
provide switching of line, low, or millivoltage burner
circuit.
• Case available for horizontal or vertical mounting.
• Combinations of two insulation and two insertion well
lengths are available.
Horizontal
Mounting
Vertical
Mounting
Contents
Application ........................................................................ 1
Features ........................................................................... 1
Specifications ................................................................... 2
Ordering Information ........................................................ 2
Installation ........................................................................ 4
Setting and Adjustments .................................................. 12
Operation .......................................................................... 12
Checkout .......................................................................... 12
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Honeywell Aquastat L8148A Specifications

General

Type	Aquastat
Voltage	120 VAC
Switch Action	SPDT
Well Dimensions	1/2 in. NPT
Current Rating	15 A
Enclosure	NEMA 1
Temperature Range	100°F to 240°F
Control Type	Low Limit
Mounting	Vertical
Switch Type	Snap-acting
Sensing Element	Liquid Filled Capillary

Summary

Application

Features

Specifications

TRADELINE Models

Details TRADELINE models selected for ease of handling and stocking.

Additional Features

Lists specific functionalities like heat-conductive compound and adjustable dial stops.

Electrical Ratings

Provides detailed voltage, current, and circuit ratings for the relays.

Immersion Well Dimensions

Specifies required dimensions for immersion wells and adapters.

Standard Models

Lists models and refers to specifications detailed in Table 2.

Optional Specifications

Covers alternative scale ranges and high limit dial stop adjustments.

Accessories

Lists available add-on components like heat conductive compound and well adapters.

Installation

Mounting (Standard Models)

Provides instructions for installing standard models in boilers with wells.

Mounting (TRADELINE Models)

Outlines the mounting procedure for TRADELINE models using adapters.

Wiring

Details electrical connections, including diagrams and safety notes.

Setting and Adjustments

High Limit Switch

Guides the user on setting the high limit temperature using the dial.

Operation

Checkout