Honeywell Aquastat L8148E 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 L8148E Specifications

General

Switching Action	SPDT
Voltage Rating	120 Vac
Electrical Ratings	120 Vac
Temperature Range	100°F to 240°F (38°C to 116°C)
Mounting	Horizontal or vertical mounting

Summary

Application of Honeywell Aquastat Relays

Features of Aquastat Relays

Key characteristics and capabilities of the L8148A, E, J Aquastat Relays.

Specifications for Honeywell L8148A, E, J Aquastat Relays

TRADELINE Models

Details on TRADELINE® models and their specific variations.

Additional Features

Highlights extra features like heat-conductive compound and mounting options.

Standard Models

Refers to models listed in Table 2 for standard configurations.

Ordering Information for Aquastat Relays

Installation of Honeywell Aquastat Relays

Installation Warnings

Critical safety warnings for explosion and electrical shock hazards.

Mounting (Standard Models)

Instructions for mounting standard Aquastat Relay models on boilers.

Mounting (TRADELINE® Models)

Procedures for mounting TRADELINE® models using adapters.

Wiring Guidelines

General guidelines and instructions for wiring the Aquastat Relay.

Equipment Damage Hazard Caution

Warning about exceeding load limits and potential equipment damage.

Setting and Adjustments for Aquastat Relays

High Limit Switch Setting

How to set the high limit temperature on the Aquastat Relay.

Setting and Adjustment Warnings

Critical safety warnings for operation and setting procedures.

Operation of Honeywell Aquastat Relays

Checkout Procedure for Aquastat Relays