Connecticut Limited Heating, Hot Water and Steam Journeyperson (S-6) Books Allowed into Exam Package

Prepare for the Connecticut Limited Heating, Hot Water and Steam Journeyperson (S-6) examination with a focused package containing the two trade references approved for open-book exam use. This package includes the International Mechanical Code, 2021 and Modern Refrigeration and Air Conditioning, 22nd Edition for code review, technical study, and exam-room reference navigation.

The Connecticut S-6 examination evaluates knowledge related to limited hot-water and steam heating work. Candidates should understand piping systems, boilers, heating equipment, controls, insulation, maintenance, testing, and general trade practices. They must also be able to locate mechanical requirements, technical explanations, equipment information, definitions, diagrams, and tables during a timed examination.

The International Mechanical Code, 2021 supports preparation for code-based questions involving mechanical equipment, boilers, piping, insulation, installation, controls, testing, and system safety. Modern Refrigeration and Air Conditioning, 22nd Edition supports technical review involving heating principles, equipment operation, system components, controls, maintenance, testing, and troubleshooting.

Studying with the books allowed into the S-6 examination helps candidates connect practical field knowledge with formal code language and technical terminology. A journeyperson candidate may already understand how to install, maintain, or repair a heating system, but a written examination question may require the candidate to locate a specific provision, identify a technical definition, interpret a diagram, or recognize the function of a control or system component.

The S-6 examination is open book, but the testing period is limited. Candidates who are not familiar with the references may spend valuable time searching page by page. Regular practice with the table of contents, indexes, chapter headings, definitions, diagrams, and technical tables can improve navigation and help candidates approach the exam more efficiently.

This product contains only the two listed books allowed into the Connecticut S-6 trade examination. It does not include supplemental hydronic heating books, system-design manuals, pipefitting handbooks, highlighting and tabbing services, online course access, book rental, Application Service, or a refundable deposit.

Candidates should use the books throughout preparation instead of opening them for the first time on exam day. Repeated use helps build a practical process: identify the subject, select the most likely reference, locate the relevant chapter or index term, review the complete supporting material, and then evaluate the available answers.

What You Get

This package is intended for candidates who want the approved S-6 exam-room references without additional supplemental books or services. Both books can be used during preparation and brought into the examination center under the applicable testing rules.

Exam Details

The Connecticut Limited Heating, Hot Water and Steam Journeyperson (S-6) trade examination contains 40 questions. Candidates are allowed 1½ hours to complete the examination, and a minimum score of 70 percent is required to pass.

The S-6 examination content outline includes the following subject areas:

• Insulation: 1 question
• General Knowledge: 4 questions
• Controls: 5 questions
• Equipment: 8 questions
• Piping: 17 questions
• Maintenance and Testing: 5 questions

Piping is the largest examination category, accounting for 17 of the 40 questions. Candidates should devote substantial preparation time to piping materials, fittings, joining methods, supports, valves, insulation, expansion, circulation, pressure, flow, system arrangements, and the movement of hot water, steam, and condensate through heating systems.

Equipment is the second-largest category. Preparation should include boilers, pumps, circulators, expansion tanks, air-control devices, heat exchangers, terminal units, control valves, safety devices, and other components used in hot-water and steam heating installations.

The controls category may involve thermostats, aquastats, pressure controls, relays, operating limits, safety controls, valves, and equipment operating sequences. Candidates should understand how controls start, stop, regulate, and protect heating equipment.

Maintenance and testing questions may address system startup, equipment inspection, pressure testing, temperature measurements, preventive maintenance, troubleshooting, and recognition of unsafe or inefficient operating conditions.

General knowledge questions may involve accepted heating practices, system operation, piping principles, equipment relationships, and journeyperson-level trade understanding. Insulation questions may address heat loss, material application, equipment protection, piping protection, and system efficiency.

With 90 minutes available for 40 questions, candidates have an average of approximately two minutes and fifteen seconds per question. This time includes reading the question, identifying the subject, selecting the appropriate book, locating the supporting information, and choosing an answer.

A practical study schedule should reflect the published examination weighting. Piping and equipment together account for most of the questions, while controls, maintenance, testing, general knowledge, and insulation complete the remaining content.

Open Book Test

The Connecticut S-6 Limited Heating, Hot Water and Steam Journeyperson examination is an open-book test. Candidates may bring approved references into the testing center under the applicable examination rules.

The International Mechanical Code, 2021 and Modern Refrigeration and Air Conditioning, 22nd Edition are the approved S-6 trade references included in this package.

Approved references may be highlighted, underlined, annotated, and indexed before the examination. Permanent tabs may be used to identify chapters, definitions, technical tables, piping topics, equipment subjects, controls, maintenance information, and testing material.

Temporary tabs, removable notes, loose papers, and inserted pages are not permitted. Candidates may not write in the books during the examination, and examination questions or answers may not be recorded inside the approved references.

A practical open-book strategy begins by identifying the type of question. A code-based question involving boilers, mechanical equipment, piping, insulation, installation requirements, controls, testing, or system safety may lead to the International Mechanical Code.

A technical question involving heating principles, equipment operation, system components, controls, maintenance, testing, or troubleshooting may be supported by Modern Refrigeration and Air Conditioning.

Candidates should use the table of contents, index, chapter headings, definitions, diagrams, and technical tables instead of searching page by page. Selecting the correct index term is important because the wording used in an examination question may differ from the terminology used in the book.

Reading the complete supporting section is essential. Definitions, exceptions, notes, table headings, and surrounding paragraphs may affect the correct answer. Candidates should avoid choosing a response based on one isolated sentence without reviewing its full context.

Timed reference practice helps candidates determine how quickly they can identify a subject, select the correct book, locate the supporting material, and evaluate the available answers. It also helps them learn when to continue searching and when to move to another question.

Licensing Steps

1. Review the S-6 license scope. Confirm that the Connecticut Limited Heating, Hot Water and Steam Journeyperson classification matches the work you plan to perform.
2. Complete the applicable training pathway. Satisfy Connecticut’s registered apprenticeship or accepted equivalent experience and training requirements.
3. Gather qualification records. Prepare apprenticeship documentation, classroom records, employment verification, and other materials required for the application pathway.
4. Complete the journeyperson application. Submit the applicable application and supporting information to the Connecticut Department of Consumer Protection.
5. Receive examination eligibility. The state reviews the applicant’s qualifications and determines whether the candidate may proceed to testing.
6. Prepare for the S-6 examination. Study the approved books, review the examination outline, and practice locating information under timed conditions.
7. Schedule the examination. Follow the testing provider’s registration and scheduling procedures after eligibility is granted.
8. Complete the S-6 trade examination. Take the 40-question examination within the 1½-hour testing period.
9. Complete license-issuance requirements. Submit any remaining documents, examination results, or licensing fees according to Connecticut’s instructions.

Passing the examination does not automatically issue the S-6 license. Applicants must complete Connecticut’s training, application, examination, documentation, and license-issuance requirements.

State Requirements

The Connecticut S-6 credential is a limited journeyperson license associated with qualifying hot-water and steam heating work. The classification addresses heating equipment, related piping, controls, insulation, maintenance, testing, and system operation within the limits established for the credential.

The S-6 license is a journeyperson credential and does not provide independent contracting authority. The license holder must perform authorized work while employed by a contractor licensed for the applicable heating work.

Applicants must complete the applicable training and experience pathway accepted by the Connecticut Department of Consumer Protection. Supporting records may be required to document classroom instruction, supervised on-the-job training, apprenticeship completion, employment, or equivalent qualifications.

Applicants with education, experience, or an occupational license obtained outside Connecticut should follow the applicable state process for equivalent training, experience, or an equivalent credential. Connecticut determines whether the submitted qualifications satisfy the licensing requirements.

The S-6 classification is limited in scope. It does not provide unlimited authority to perform every type of heating, cooling, refrigeration, fuel gas, oil burner, piping, or air-conditioning work. License holders must remain within the work authorized by the credential.

Holding an S-6 license does not replace other occupational credentials that may be required for work outside the approved scope. Journeypersons should perform authorized services only while employed by an appropriately licensed contractor.

Candidates should review the S-6 classification carefully before applying. Connecticut offers multiple heating, piping, cooling, refrigeration, fuel, and related occupational license types, and the selected credential should match the work the applicant intends to perform.

Reference Books

• International Mechanical Code, 2021
  This approved exam-room code covers mechanical systems, boilers, equipment installation, piping, insulation, controls, testing, and related safety requirements. Candidates should become familiar with its chapter structure, definitions, tables, exceptions, equipment provisions, and piping requirements.
• Modern Refrigeration and Air Conditioning, 22nd Edition
  This approved technical reference supports preparation involving heating principles, system equipment, controls, operation, inspection, maintenance, testing, and troubleshooting. Its diagrams and technical explanations help connect individual component functions with complete heating-system operation.

The books should be used throughout preparation rather than opened for the first time on examination day. Repeated study helps candidates learn chapter locations, useful index terms, diagram placement, technical-table organization, and the relationship between examination subjects and reference material.

Candidates may prepare the books with permitted highlighting, annotations, and permanent tabs before testing. Any preparation should comply with the applicable examination-center rules.

Exam Room Approved Books

The following references are included for preparation and use during the Connecticut S-6 trade examination:

• International Mechanical Code, 2021
  Use this reference for code-based questions involving boilers, mechanical equipment, piping, insulation, installation requirements, controls, testing, and system safety.
• Modern Refrigeration and Air Conditioning, 22nd Edition
  Use this reference for technical questions involving heating principles, equipment, controls, system components, operation, maintenance, testing, and troubleshooting.

This package is limited to the two approved S-6 exam-room references. Supplemental books such as hydronic heating manuals, system-design manuals, and pipefitting handbooks are not included.

Candidates are responsible for bringing their approved references to the testing center. The examination location does not provide each candidate with a personal set of books.

The books in this package are not identified as highlighted or tabbed. Candidates who plan to add permitted highlighting, annotations, or permanent tabs should complete that preparation before the examination and follow the applicable testing rules.

Test Information and Study Materials

A productive S-6 study plan should begin with piping because it accounts for 17 of the 40 examination questions. Review piping materials, fittings, joining methods, supports, valves, insulation, expansion, circulation, flow, pressure, and system arrangements.

Candidates should understand the differences between hot-water and steam systems. Study how heated water, steam, and condensate move through their respective systems, how circulation occurs, and how piping arrangements affect performance.

Equipment accounts for eight questions. Review boilers, pumps, circulators, expansion tanks, air separators, heat exchangers, terminal units, control valves, safety devices, and other components used in hot-water and steam heating systems.

Controls and maintenance each account for five questions. Candidates should understand thermostats, aquastats, pressure controls, relays, operating limits, safety devices, valves, equipment sequences, inspection procedures, testing, preventive maintenance, and troubleshooting.

Use the International Mechanical Code to review formal mechanical requirements. Pay attention to definitions, tables, exceptions, equipment provisions, piping requirements, installation rules, and testing procedures.

Use Modern Refrigeration and Air Conditioning to reinforce heating principles, equipment functions, controls, operation, maintenance, and troubleshooting. Review diagrams, component relationships, and operating sequences instead of relying only on isolated definitions.

During timed practice, identify the likely reference before opening a book. Use the index, table of contents, chapter headings, diagrams, and permitted permanent tabs to locate the supporting information.

Review missed practice questions carefully. Find the applicable code provision or technical explanation, determine why the original response was incorrect, and study related concepts that may appear in a differently worded question.

Candidates should also practice managing difficult questions. Spending too much time on one reference search can reduce the time available for the rest of the examination. A planned approach can help candidates complete all questions before returning to items that require additional review.

How 1 Exam Prep Helps You Reach Your Goal

1 Exam Prep helps Connecticut S-6 candidates prepare with a focused package containing the books approved for the trade examination room. This package provides the two references directly connected to open-book testing without adding unrelated supplemental materials or services.

Trade-focused preparation helps candidates connect each examination subject with the appropriate reference. The International Mechanical Code supports code-based mechanical requirements, while Modern Refrigeration and Air Conditioning reinforces heating principles, equipment, controls, operation, maintenance, testing, and troubleshooting.

Reference-navigation practice helps candidates learn how each book is organized. Familiarity with indexes, chapter layouts, definitions, diagrams, tables, and cross-references can reduce unnecessary searching during the 1½-hour examination.

Practice-oriented preparation also helps identify weaker subjects before test day. Candidates can direct additional study toward piping, equipment, controls, insulation, maintenance, testing, hot-water systems, or steam-heating principles.

Using the approved books during preparation allows candidates to build a repeatable exam strategy. They can practice identifying the subject, selecting the correct reference, locating the supporting material, reading the complete section, and choosing the best answer.

No exam book package can guarantee examination eligibility, a passing result, application approval, or license issuance. Consistent study, qualifying training, familiarity with the approved references, and effective time management remain important parts of the Connecticut S-6 licensing process.

FAQ Section

What books are included in this package?

The package includes the International Mechanical Code, 2021 and Modern Refrigeration and Air Conditioning, 22nd Edition.

Are both books allowed into the S-6 examination?

Yes. Both listed books are approved references for preparation and open-book use during the Connecticut S-6 trade examination.

Is the Connecticut S-6 examination open book?

Yes. Candidates may bring approved references into the testing center under the applicable examination rules.

How many questions are on the S-6 examination?

The S-6 examination contains 40 questions. Candidates have 1½ hours to complete the test and must earn a minimum score of 70 percent.

What is the largest examination category?

Piping is the largest category, accounting for 17 of the 40 questions. Equipment is the second-largest category with eight questions.

Are the books highlighted and tabbed?

No highlighting or tabbing service is identified as part of this standard Books Allowed into Exam Package.

Does this package include supplemental study books?

No. This package is limited to the two approved S-6 trade exam-room references.

Does this package include an online course?

No. This product includes printed examination references only and does not include online course access.

Is this a rental package?

No. This product is a standard books package and is not identified as a rental.

Does this package include Application Service?

No. Application Service is not included with this standard exam-room book package.

Does the S-6 license allow independent contracting?

No. The S-6 credential is a journeyperson license. The holder must perform authorized work while employed by an appropriately licensed contractor.

Does purchasing this package guarantee a license?

No. Applicants must meet Connecticut’s qualification requirements, receive examination eligibility, pass the examination, complete the licensing process, and receive state approval.