Service manual

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600-D01 Series Hydronic Heating System Service Manual - Rev. A

Section 1: Introduction to the Aqua-Hot 600 Series

Introduction ............................................................................................................ Page 6-8

Danger, Warning, Caution, and Note Box Definitions ............................................. Page 6

Model Differentiation .............................................................................................. Page 8

Section 2: Aqua-Hot Hydronic Heating System Overview

Technical Information…………………………………………………………………….Page 9

I.D. Label Sample ................................................................................................... Page 10

Component Overview ............................................................................................. Page 11-13

Aqua-Hot Operational Flow-Chart .......................................................................... Page 14

Antifreeze & Water Heating solution ...................................................................... ..Page 15-16

Section 3: Interior Switch Panel

Diesel-Burner Switch .............................................................................................. Page 17

Engine Preheat Switch ........................................................................................... Page 17

Electric Element Switch .......................................................................................... Page 17

High/Low Switch (Electric Element) ........................................................................ Page 18

Pin Label ................................................................................................................ Page 19-20

Section 4: Aqua-Hot 600-Series Components

Fluid Level Sensor ................................................................................................. Page 21-22

Control Thermostat ................................................................................................. Page 23-24

A.C. High Limit Thermostat (Right) ......................................................................... Page 25

A.C. High Limit Thermostat (Left) ........................................................................... Page 26

D.C. High Limit Thermostat .................................................................................... Page 27-28

Check Valves ......................................................................................................... Page 28-29

Tempering Valve .................................................................................................... Page 30-31

Circulation Pumps 1, 2, & 3 .................................................................................... Page 32-33

Engine Pre-Heat Pump .......................................................................................... Page 34-35

Electric Heating Element (Right) ............................................................................ Page 36-37

Electric Heating Element (Left) ............................................................................... Page 38-40

A.C. Relay (Right) .................................................................................................. Page 41

A.C. Relay (Left) ..................................................................................................... Page 42-43

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