Module 3: / Domestic Heating/MMA Welding
Unit 4: / Commissioning and Maintenance
Phase 2
Trade of Plumbing – Phase 2 Module 3
Table of Contents
List of Figures 4
List of Tables 5
Document Release History 6
Module 4 – Domestic Hot and Cold Services 7
Unit 4 – Commissioning and Maintenance 7
Learning Outcome: 7
Key Learning Points: 7
Training Resources: 8
Key Learning Points Code 8
About Unit 4 9
Self Assessment 10
Exercise 10
Index 11
List of Figures
List of Tables
Document Release History
Date / Version / Comments /June 2006 / V.1.0
17/02/14 / 2.0 / SOLAS transfer
Unit 4 6
Trade of Plumbing – Phase 2 Module 3
Module 4 – Domestic Hot and Cold Services
Unit 4 – Commissioning and Maintenance
Duration – 15 Hours
Learning Outcome:
By the end of this unit each apprentice will be able to:
· Describe the commissioning procedure for domestic heating systems.
· Describe the purpose and procedure for balancing heating systems.
· Replace radiator valves and pumps in domestic heating systems.
Key Learning Points:
Rk / Commissioning procedures.Rk Sc / Flushing through heating systems.
Sk / Filling and venting system.
Sk / Venting and adjusting pump.
Sk / Checking for leaks.
RK Sk / Balancing a heating system.
Sk / Identification of valves.
Sk / Checking safety valve.
Sk / Checking feed and expansion tank, water level, expansion pipe, overflow.
Rk / Chemical treatment for heating systems.
Sk / Draining heating system.
Sk / Replacing radiator valves.
Rk / Isolation of electrical supply.
Sk / Replacing pump.
Rk / Air locks in heating systems.
Rk / Cold spots in radiators, flushing radiators.
P / Communication and teamwork.
Training Resources:
· Classroom facilities.
· Information sheets.
· Workshop facilities.
· Domestic heating system.
Key Learning Points Code
M = Maths D= Drawing RK = Related Knowledge Sc = Science
P = Personal Skills Sk = Skill H = Hazards
Unit 4 11
Trade of Plumbing – Phase 2 Module 3
About Unit 4
This unit is primarily a skill based unit, please refer to your instructor.
Self Assessment
Exercise
1. Describe the sequence of events when commissioning a heating system.
2. State the purpose and procedure for balancing a heating system.
3. State the pressure at which a domestic heating safety valve should open.
Index
Unit 4 11