090255Addendum_051810

Replace Central Heat Plant

5/20/2010

FMKM932052

AMENDMENT NO. 0002 / ADDENDUM 1

CHANGES TO DRAWINGS:

1. Refer to Sheet M1.02 – BUILDING 240 MECHANICAL PLANS:

A. Refer to 1/M1.02 FLOOR PLAN D - DEMOLITION;

1. Revise piping demolition and new work as per attached drawing showing revisions to heating piping. Much of the existing piping and radiation in the north potion of the building has been removed, as well as much of the piping in the old garage. The balance is to be removed by the Contractor, and replaced with new hot water supply & return as indicated on the revision drawing. (Drawing Revision Sheet M1.02A attached) B. New heating mains between Boiler Room and building will enter the Boiler Room at the ceiling. Discharge piping from new sump pump will still connect to existing piping below floor of building.

C. Delete requirement for new thermostatic control of existing fin radiation in north portion of building – radiation has been removed.

D. Refer to Pump Schedule:

1. Change heating pump P-3 from B&G Series 60 Model 1-1/2 x 5-1/4, to Model 1 x 5-1/4, for 44 GPM @ 15-ft., with 1/2 HP, 208-3 phase motor.

E. Refer to Hydronic System Schematic, Detail 5/M1.02;

1. Change all piping that is indicated as 2-1/2” to 2”.

2. Change size of air separator from 2-1/2” to 2”, equal to B&G “Rolairtrol” Model R2.

2. Refer to Drawing Sheet 8.01 ELECTRICAL SCHEDULES:

A. Refer to Electrical Equipment Schedule, No. P-3 at Building 240:

1. Change motor to 1/2 HP, change starter to Size 0 FVNR FS HOA, change fuse size to 6A.