Honeywell AQUASTAT L8124C User Manual

PRODUCT DATA
60- 2061- 10
® U.S. Registered Trademark
Copyright © 2001 Honeywell • All Rights Reserved
L8124A,B,C,E,G,L,M
Aquastat® Relays
GENERAL
These immersion type controllers are for use with forced
hydronic heating systems that include domestic hot water
service.
FEATURES
• L8124 Aquastat® Relays provide high limit, low limit,
and circulator control for maintaining boiler
temperatures.
• L8124 Aquastat Relays can provide multizone control
by using a separate circulator and R845 Relay for
each zone.
• All L8124 Aquastat Relays mount directly on the boiler.
• L8124E,G and L have large transformers and extra
terminals for supplying power to low voltage zone
valves.
• L8124M is for use in a wood-coal/gas-oil multifuel
heating system. Circulator is independently controlled
by the thermostat.
Contents
General ............................................................................. 1
Features ........................................................................... 1
Specifications ................................................................... 2
Ordering Information ........................................................ 2
Installation ........................................................................ 5
Wiring ............................................................................... 7
Operation .......................................................................... 10
Setting And Checkout ....................................................... 10
Checkout .......................................................................... 14
Material Safety Data Sheet (MSDS) ................................. 14

Honeywell AQUASTAT L8124C Specifications

General

Brand	Honeywell
Model	AQUASTAT L8124C
Category	Relays
Language	English

Summary

General Information

General Overview

Overview of immersion type controllers for hydronic heating systems.

Product Features

Key Features

High limit, low limit, multizone control, and specific model applications.

Technical Specifications

Model and Feature Details

TRADELINE models, additional features, pressure, temperature, and electrical specs.

Mounting, Dimensions, and Approvals

Mounting means, dimensions, and UL/CSA approvals.

Product Ordering Information

Purchasing and Contact

Refer to catalog for ordering, contact sales for questions.

Aquastat Relay Model Comparison

Model Specifications and Replacements

Comparison of L8124 models, dimensions, electrical ratings, and replacement assemblies.

Product Installation Guide

Installation Steps and Warnings

Procedure steps, fire/explosion, and electrical shock hazard warnings.

Standard Model Mounting

Standard Mounting Procedures

Boiler tapping, installation steps, and well fitment for standard models.

TRADELINE Model Mounting

TRADELINE Mounting Details

Heat-conductive compound, case orientation, and old control removal.

Wiring Instructions

Wiring Procedures and Compliance

Wire terminal use, connection methods, and compliance with codes.

Product Operation

High Limit and Low Limit/Circulator Operation

How high limit, low limit, and circulator controls function with temperature and differential.

Setting and Checkout Procedures

Setting, Differential, and Stop

Boiler manufacturer recommendations, differential adjustment, and setting stop installation.

Fire or Explosion Hazard Warning

Warning about severe injury, death, or property damage. Use with pressure relief valve.

Heat Anticipator Setting

Final Checkout Procedure

Material Safety Data Sheet (MSDS)

MSDS Key Information

Composition, hazards, first aid, fire fighting, release, handling, exposure, and properties.

MSDS Additional Information

Stability, toxicology, ecology, disposal, transportation, regulatory, and other MSDS data.