2119 version 3
28-Jun-16
1 of 3
GASFITTING
Design gas hot water supply systems
level:
5
credit:
10
planned review date:
April 1998
sub-field:
Plumbing, Gasfitting and Drainlaying
purpose:
This unit standard is for people who work, or intend to work,
in gasfitting. People credited with this unit standard will be
able to determine user requirements and design gas hot
water supply systems.
entry information:
Open.
accreditation option:
Evaluation of documentation and visit by NZQA and
industry.
moderation option:
A centrally established and directed national moderation
system has been set up by The Skills Organisation.
special notes:
New Zealand Building Code and Approved Documents, G10
Piped Services, G11 Gas as an Energy Source,
Manufacturers' specifications, Water supply protection
regulations, NZS 3501: 1976, NZS 4617: 1989, NZS 5261:
1994, NZS 5807 Part 2: 1980, AS 2642 Parts 1, 2 & 3: 1989,
AS 3500 Part 4: 1990, Health and Safety in Employment Act
1992.
Range: domestic, recreational, commercial, industrial.
 New Zealand Qualifications Authority 2016
2119 version 3
28-Jun-16
2 of 3
GASFITTING
Design gas hot water supply systems
Elements and Performance Criteria
element 1
Determine owner/user requirements for hot water supply system.
performance criteria
1.1
Hot water supply system devices and components are selected in accordance
with Acts, Codes, owner/user requirements and manufacturers' instructions,
refer special note.
element 2
Design hot water system.
Range:
direct, indirect, mains pressure, low pressure.
performance criteria
2.1
Gas hot water supply system design and detail specifications conform to
provisions of Acts, Standards, Codes, owner/user requirements and
manufacturers' instructions, refer special note.
element 3
Maintain safe working environment.
performance criteria
3.1
Work practices are carried out without injury to workers, public, or damage to
building, other services, tools or equipment, refer special note.
 New Zealand Qualifications Authority 2016
2119 version 3
28-Jun-16
3 of 3
GASFITTING
Design gas hot water supply systems
Comments to:
The Skills Organisation
Freepost 5164
PO Box 24-469
Royal Oak
Auckland 1345
Please Note:
Providers must be accredited by the Qualifications Authority
before they can offer programmes of education and training
assessed against unit standards.
Accredited providers assessing against unit standards must
engage with the moderation system that applies to those unit
standards. [Please refer to relevant Plan ref: 0008]
 New Zealand Qualifications Authority 2016