Repair AHU B707 - Q and A - set 1 - 19 May 2026.pdf

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Repair B707 Heating and Ventilation Systems
Solicitation number
FA6670-26-B-0002
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This is a Questions and Answers document for federal contract FA6670-26-B-0002, issued on 19 May 2026, regarding the repair of Air Handling Unit (AHU) B707 under solicitation RVKQ 26-0005.

The document addresses two contractor inquiries related to the repair project. The first question requests identification of indoor cooling units (CCU) installed on raised work platforms. The answer provides specific equipment details: CCU1 is a Dunham Bush model HCS08MA9234901 with serial number 9234901A97J, and CCU2 is a Dunham Bush model HCS08MA9234902 with serial number 9234902A97J. The second question concerns a glycol feed tank that was observed during a site walkthrough, which is currently non-operational and asks whether the contractor scope includes system draining, flushing, and glycol addition. The answer clarifies that no glycol is present in the system, the glycol feed tank is not operational, and contractors are explicitly prohibited from adding glycol to the system. The answer specifies that the base will be responsible for adding glycol at a later date.

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Repair AHU B707, RVKQ 26-0005 Question and Answers – Set 1 - 19 May 2026

FA6670-26-B-0002

Q1 - What are the model and serial number(s) of indoor units on raised work platforms?

A1 - CCU1: Make: Dunham Bush, Model #: HCS08MA9234901, Serial #: 9234901A97J CCU2: Make: Dunham Bush, Model #: HCS08MA9234902, Serial #:9234902A97J

Q2 - 2. During the walk thru noticed glycol feed tank was piped into the feed water on boiler system but valved off and no power. Is there Glycol in system? If not is scope to drain system, flush and add glycol? What concentration?

A2 – There is no glycol in the system. The glycol feed tank is not currently operational. Contractors will not add any glycol to the system. The base will be adding glycol at a later date.

File details come from the government source that posted it. Updated .