CONTENTS

WARNINGS

4

Flow Switch

33

Pay Attention to These Terms

4

High and Low Gas Pressure Switches

 

BEFORE INSTALLATION

5

(Optional)

33

Product Receipt

5

Low Water Cut Off (Optional)

33

Model Identification

5

WIRING DIAGRAM—MODELS

 

Ratings and Certifications

5

HD101–HD401

34

Installations at Elevation

5

HD TROUBLESHOOTING

35

Component Locations

6

PRE-START-UP

36

General Information

7

Filling System-Heating Heaters

36

GENERAL SAFETY

8

Domestic Hot Water Heaters

36

Time/Temperature Relationships in Scalds 8

Inspect Venting System

36

INSTALLATION

9

Pre-Start-Up Check

36

Installation Codes

9

INITIAL START-UP

36

Equipment Base

9

Tools Needed

36

Clearances

9

Preparation for Start-Up

36

Combustion and Ventilation Air

11

Start-Up

38

Conventional Combustion

 

Main Burner Adjustment

38

Air Supply

11

Gas Valve Adjustment

38

Water Piping

12

Gas Type Conversion on Valve

39

Hydronic Heating

14

Safety Inspection

39

Domestic Hot Water Piping

16

Follow-Up

39

Gas Supply

17

POST START-UP CHECK

40

Electrical Power Connections

19

Air Filter Inspection/Removal

40

Venting

21

Heat Exchanger Removal

41

Outdoor Installation

31

MAINTENANCE

42

CONTROLS

32

Suggested Minimum Maintenance

 

Ignition Control Module

32

Schedule

42

Modulating Temperature Control

 

APPENDIX

43

(Optional)

32

Inside Combustion Air Contamination

43

High Limit (Manual Reset)

32

 

 

High Limit — Auto Reset (Optional)

32

 

 

3

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Raypak HD101, HD401 manual Contents

HD101, HD401 specifications

Raypak is renowned for its commitment to high-quality heating solutions, with the HD101 and HD401 models standing out in their product range. These units are designed specifically for commercial applications, providing reliable and efficient hydronic heating systems. The HD series embodies innovation while addressing the unique demands of larger spaces.

One of the main features of the HD101 and HD401 is their stainless steel construction, which ensures increased durability and resistance to corrosion. This design choice enhances the longevity of the units, making them ideal for various installations in commercial or industrial settings.

Both models are equipped with a high-efficiency heat exchanger that maximizes heat transfer while minimizing energy consumption. This feature is particularly significant in today’s environmentally conscious market, as it contributes to lower operating costs and reduced carbon footprints. The heat exchangers are engineered for easy maintenance, offering simplicity when service is required.

In terms of technology, the HD101 and HD401 include advanced digital controls that allow for precise temperature regulation. This user-friendly interface enables operators to easily manage and monitor heating parameters, facilitating optimal performance and energy management.

The models also feature modulating burners that adjust their output according to the heating demand. This capacity for modulation results in smoother operation and an overall increase in efficiency, as the burners can maintain consistent temperatures without excessive energy use.

Another noteworthy characteristic is their compatibility with various control systems, including BMS (Building Management Systems). This adaptability allows for seamless integration into existing infrastructure, providing users with greater versatility and control over their heating environments.

Both the HD101 and HD401 come with advanced safety features, including flame rollback protection and pressure monitoring, ensuring safe operation even in demanding conditions. Additionally, their compact design allows for easy installation in limited spaces while still providing powerful heating capabilities.

Ultimately, the Raypak HD101 and HD401 are exceptional choices for those in need of high-efficiency commercial heating solutions. With their robust construction, advanced technology, and user-friendly features, these models promise to deliver reliable performance and energy savings for years to come. Whether for a large facility or a specific industrial application, they stand ready to meet the heating challenges of today’s commercial landscape.