Q___A_IFB_15-2048907.pdf
PDF 30 KB Posted
- Attached to
- IFB # 15-2048907 ROOF FURNACE REPLACEMENT
- Solicitation number
- 0000000934
- Issued by
- Sacramento County, California
About this file
This is a Question and Answer document from the California Department of Technology regarding IFB 15-2048907 for Roof Furnace Replacement. The document addresses three vendor questions related to technical specifications for the replacement of two Daikin RAH 047C furnace units. The state specifies that the Variable Frequency Drives (VFDs) for these units shall be Yaskawa Z1000 drives or equivalent, with equivalency to be determined by the state and requiring cut sheets for alternate proposals.
The document clarifies that VFD bypass functionality will not be needed for the two furnace units, and the state is not interested in the optional 5-year parts warranty or 10-year heat exchanger warranty. The existing installation currently uses Yaskawa E7N drives in the McQuay unit, which are no longer manufactured or recommended for use in new units due to warranty concerns.
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Other files
| File | Type | Posted |
|---|---|---|
| IFB_15-2048907_Roof_Furnace_Replacement_Addendum_1.pdf | ||
| IFB_15-2048907_Roof_Furnace_Replacement.pdf |
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Text version
CALIFORNIA DEPARTMENT OF TECHNOLOGY IFB 15-2048907
Roof Furnace Replacement
Question and Answer
IFB 15-2048907 Roof Furance Replacement
This document will address vendor questions regarding IFB 15-2048907, Roof Furnace Replacement.
QUESTION ANSWER
1. During the walkthrough it was observed that the current VFD installed in the McQuay unit was a Yaskawa E7N. These drives are no longer offered by the manufacturer and it is not recommended that the old drives be used in the new units due to warranty concerns. Does the state have a specification on the type of VFD drive to be specified in the IFB submittal?
1. The VFD for the two Daikin RAH 047C units shall be Yaskawa Z1000 drives or equivalent. Equivalency will be determined by the state and cut sheets must be provided if proposed drives are an alternate type/manufacturer/model.
2. Can you confirm if you want a bypass on the VFDs?
2. No, a VFD with bypass will not be needed for the two furnace units
3. Are you interested in the optional 5 year part warranty or 10 year heat exchanger warranty?
3. No.
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