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2024 International Mechanical Code
Chapter 11

IMC 2024

2024 International Mechanical Code

Chapter 11Refrigeration

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Question 1 1.

Which specific standard must be followed for the design of refrigeration systems using ammonia?

ASHRAE 15
IIAR 2
UL 1995
International Fire Code

Question 2 2.

Under what condition is a change of refrigerant to a different safety group designation permitted in an existing system?

If the owner is notified
If the new refrigerant is filtered and dried
If the system complies with requirements for a new installation and has code official approval
Only if the original manufacturer provides a written waiver

Question 3 3.

What is the requirement for refrigerant circuit access ports located outdoors in a non-controlled area?

They must be painted red
They must be fitted with locking-type tamper-resistant caps
They must be located at least 10 feet above grade
They must be enclosed in a ventilated cabinet

Question 4 4.

What is the restriction on reusing recovered refrigerants in different systems?

They can only be used in systems of the same owner
They can be used in any system if filtered and dried
They must be tested to AHRI 700 standards before any reuse
They can only be used in systems within the same building

Question 5 5.

To be reused in a different owner’s equipment, used refrigerants must be tested and found to meet which purity requirement?

ASTM D123
UL 207
AHRI 700
ASHRAE 34

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