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City of Everett, WA IMEG #24000280.11 <br />August 21, 2024 Page 2 of 4 <br />5. The water heater scheduled on sheet M4 does not contain the information required per <br />C404.2. Water heaters shall be air -source heat pump type per C404.2.1, or note the exception <br />used. Please revise. <br />IMEG Response: Refer to exception 1 under C404.2.1 which applies to the water heater within <br />this project. The specified water heater is 2 kW, well below the specified maximum of 24 kW <br />plus 0.1 watts per SF of building area. This project is the first tenant within this building so the <br />total amount of elecptric resistance water heating within the building upon completion of this <br />project will be 2kW, again, well below the maximum limits set forth by Section C404.2.1, <br />exception 1. <br />6. Revise ventilation calculations per 2021 energy code and 2021 Washington Mechanical Code, or <br />provide an explanation in your response letter. <br />IMEG Response: Ventilation calculations were revised per 2021 code series. Refer to drawing <br />M5. <br />7. Please confirm that the ventilation system design is or is not providing heat per WSEC C403.7.3. <br />IMEG Response: The existing energy recovery ventilator, which provides ventilation air to the <br />space, is not equipped with supplemental heating as defined in C403.3.5.5 or C403.7.3. The <br />energy recovery ventilator is equipped with a plate and frame heat exchanger and no <br />supplemental means of heating or cooling. <br />8. Energy code mechanical requirements, sheet M10 <br />IMEG Response: Note that with the addition of the commissioning specifications, this <br />sheet is now sheet M11. <br />a. page 1 of 25 — Please identify the location of the calculations per C403.1.2. <br />IMEG Response: Cooling and heating load calculations have been provided as a <br />supplement to this re -submittal. Please refer to separate attachment. <br />page 2 of 25 — Drawings do not clearly indicate required information per C403.3.1, <br />C403.3.2 and or C403.9.1. Pleaser clearly indicate where this information is located on <br />the drawings. <br />IMEG Response: For C403.3.11 refer the cooling and heating load calculations provided <br />as a separate attachment to this re -submittal and the cooling and heating capacities <br />listed within the VRF Unit Schedule on Sheet M4. For C403.3.2, refer to VRF Unit <br />Schedule on Sheet M4 and ventilation calculations on Sheet M5. Note that the VRF <br />condensing unit is an existing piece of equipment that was provided under the core/shell <br />scope of work under a separate permit and would not be subject to efficiency <br />requirements as it is not being provided or modified under the scope of this project. <br />c. page 3 of 25 — DOAS is required in the 2021 Energy Code. Please clarify your response <br />to C403.3.5, C403.5.4, C403.3.5.1, C403.3.5.1, and revise the design accordingly. <br />IMEG Response: The existing energy recovery ventilator serves as the DOAS system <br />with energy recovery. This section of the energy compliance documentation was <br />previously marked as NA because this system is existing and not specified within the <br />scope of this project. The energy compliance documentation has been revised to include <br />the DOAS sections, with notes as required referring to the system being existing. For <br />additional information on the energy recovery ventilator, an Existing Energy Recovery <br />Ventilator Schedule has been added to drawing M3 <br />d. page 9 of 25 — Please provide dampers per WSEC C403.7.8, C403.7.8.3. and C403.7.8.4. <br />9k <br />