Wash. Admin. Code § 51-11C-40349 - Sections C403.4.11 and C403.4.12
Table C403.4.11.1
DDC Applications and Qualifications
Building Status |
Application |
Qualifications |
New building |
Air-handling system and all zones served by the system |
Individual systems supplying more than three zones and with fan system bhp of 10 hp and larger |
Chilled-water plant and all coils and terminal units served by the system |
Individual plants supplying more than three zones and with design cooling capacity of 300,000 Btu/h and larger |
|
Hot-water plant and all coils and terminal units served by the system |
Individual plants supplying more than three zones and with design heating capacity of 300,000 Btu/h and larger |
|
Alteration or addition |
Zone terminal unit such as VAV box |
Where existing zones served by the same air-handling, chilled-water, or hot-water system have DDC |
Air-handling system or fan coil |
Where existing air-handling system(s) and fan coil(s) served by the same chilled- or hot-water plant have DDC |
|
New air-handling system and all new zones served by the system |
Individual systems with fan system bhp of 10 hp and larger and supplying more than three zones and more than 75 percent of zones are new |
|
New or upgraded chilled-water plant |
Where all chillers are new and plant design cooling capacity is 300,000 Btu/h and larger |
|
New or upgraded hot-water plant |
Where all boilers are new and plant design heating capacity is 300,000 Btu/h and larger |
Notes
State regulations are updated quarterly; we currently have two versions available. Below is a comparison between our most recent version and the prior quarterly release. More comparison features will be added as we have more versions to compare.
Table C403.4.11.1
DDC Applications and Qualifications
Building Status | Application | Qualifications |
New building | Air-handling system and all zones served by the system | Individual systems supplying more than three zones and with fan system bhp of 10 hp and larger |
Chilled-water plant and all coils and terminal units served by the system | Individual plants supplying more than three zones and with design cooling capacity of 300,000 Btu/h and larger | |
Hot-water plant and all coils and terminal units served by the system | Individual plants supplying more than three zones and with design heating capacity of 300,000 Btu/h and larger | |
Alteration or addition | Zone terminal unit such as VAV box | Where existing zones served by the same air-handling, chilled-water, or hot-water system have DDC |
Air-handling system or fan coil | Where existing air-handling system(s) and fan coil(s) served by the same chilled- or hot-water plant have DDC | |
New air-handling system and all new zones served by the system | Individual systems with fan system bhp of 10 hp and larger and supplying more than three zones and more than 75 percent of zones are new | |
New or upgraded chilled-water plant | Where all chillers are new and plant design cooling capacity is 300,000 Btu/h and larger | |
New or upgraded hot-water plant | Where all boilers are new and plant design heating capacity is 300,000 Btu/h and larger |