Wash. Admin. Code § 51-11C-40404 - Section C404.4-Heat traps
C404.4
Heat traps
for hot water storage tanks. Storage tank-type water heaters and hot
water storage tanks that have vertical water pipes connecting to the inlet and
outlet of the tank shall be provided with integral heat traps at the vertical
inlets and outlets or shall have pipe-configured heat traps in the piping
connected to those inlets and outlets. Tank inlets and outlets associated with
solar water heating system circulation loops shall not be required to have heat
traps.
Notes
Statutory Authority: RCW 19.27A.020, 19.27A.025 and chapters 19.27 and 34.05 RCW. 13-04-056, § 51-11C-40404, filed 2/1/13, effective 7/1/13.
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.
C404.4 Heat traps for hot water storage tanks. Storage tank-type water heaters and hot water storage tanks that have vertical water pipes connecting to the inlet and outlet of the tank shall be provided with integral heat traps at the vertical inlets and outlets or shall have pipe-configured heat traps in the piping connected to those inlets and outlets. Tank inlets and outlets associated with solar water heating system circulation loops shall not be required to have heat traps.
Notes
Statutory Authority: RCW 19.27A.020, 19.27A.025 and chapters 19.27 and 34.05 RCW. 13-04-056, § 51-11C-40404, filed 2/1/13, effective 7/1/13.