DES MOINES PUBLIC SCHOOLS MADISON WALK-IN COOLER/FREEZER PROJECT. 806 E. Hoffman Street Des Moines, IA ADDENDUM NO.

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1 DES MOINES PUBLIC SCHOOLS MADISON WALK-IN COOLER/FREEZER PROJECT 806 E. Hoffman Street Des Moines, IA ADDENDUM NO. 1 April 3, 2017 Item 1: Item 2: Item 3: Item 4: See attached sketch showing the cooler box as 14 x10 and the freezer box 6 X 10. See revised Cooler/Freezer description document for model number clarification. Note: The wall between the cooler section and the freezer shall be a minimum of 6 insulated wall. Note: The floor of the cooler/freezer does not need to be checkerplate, only that it is hardened for cart traffic. END OF ADDENDUM

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4 Addendum #1 Revised Project: Madison Elementary School 806 Hoffman Avenue Des Moines IA Walk-In Cooler/Freezer Purchase and Install Provide a unit as listed below or submit review documents for approval (prior to submitting a bid) on a Similar or equal to: Crown/Tonka Walk Ins Model No. COOLER/FREEZER Box description: Cooler/Freezer Dimensions: External (O.D.): 20' 0" x 10' 0" x 8' 6" w x d x h Internal (I.D.): 19' 2" x 9' 2" x 7' 9" w x d x h Volume: 1362 ft³ / Finishes: Walls: Galvanized/Embossed 26 Ga. & Sanisteel White 26 ga. Anti Microbial (5mm) interior & exterior Floors: Aluminum/Smooth - cart traffic hardened.050 & Sanisteel Gray 19 ga Slip Resistance (1.2 mm) interior Galvanized/Embossed 26 Ga. exterior Ceilings: Galvanized/Embossed 26 Ga. & Sanisteel White 26 ga. Anti Microbial (5mm) interior Galvanized/Embossed 26 Ga. exterior Panel Thickness: Walls: 5" UL Listed Class 1 Foam Floors: 4" UL Listed Class 1 Foam standard floor 1000 lb/ft² equally distributed (single layer of 1/2" underlayment in floor) Ceilings: 5" UL Listed Class 1 Foam Doors: D01: 1 Finished opening 36" x 78" hinged self close overlap cooler door, 4" sill 1 Latch Kason 58CL Cylinder Locking W/59 Roller Strike (Self Closing) 1 Pilot Light Switch 120v w/cover(loose), for 2x4 flush handy box (stub conduit to box on interior) 1 Thermometer 2 1/2" Dial with Standard Lead 1 Door Closer Kason 1094 SureClose Hydraulic (Concealed mounting) 1 Gasket Magnetic D02: 1 Finished opening 36" x 78" hinged self close overlap freezer door, 4" sill 1 Latch Kason 58CL Cylinder Locking W/59 Roller Strike (Self Closing)

5 1 Pilot Light Switch 120v w/cover(loose), for 2x4 flush handy box (stub conduit to box on interior) 1 Thermometer 2 1/2" Dial with Standard Lead 1 Heated Jamb, NO Threshold heat 1 Heat In Bottom Of Door 1 Door Closer Kason 1094 SureClose Hydraulic (Concealed mounting) 1 Gasket Magnetic Accessories: 2 Light (120v) Vapor Proof LED Caulk Silicone Grey 1 Vent 115v Hi Flow Heated Pressure Relief Port (Kason) 1 Rain Drip Cap Mount above Hinged Door (ship loose) 1832) 32 Lock Wall Panels to Floor Panels Caulk Butyl (Tubes) Blocking For Strip Curtain Caulk Silicon white 1 Lag Down Walls to Ceiling Refrigeration: Condensing Unit for Freezer: Description: Low Temp R404A Air Cooled Hermetic Remote Outdoor Condensing Unit with microchannel condenser Model: MOH025L63CFLT Extras: Liquid line, Filter, Drier, Sight glass installed Conditions: BTUH: 8300 Room Temp: 10 F Ambient: 95 F Warranty: Compressor motor warranty extended to 5 years, parts only, no labor 1 x Evaporator (Unit cooler): Description: Electric defrost Low profile coil (unit cooler) /1/60 with EC fan motors coil Model: LCE676BEQRC6B Extras: with electric expansion valve, mounted CSSC Controller and ECM fan motors Condensing Unit for Cooler: Description: Med Temp R404A Air Cooled Hermetic Remote Outdoor Condensing Unit with microchannel condenser Model: MOH015X63CFM Horsepower: 1.5 hp Extras: Liquid line, Filter, Drier, Sight glass installed Conditions: BTUH: Room Temp: 35 F Ambient: 95 F Warranty: Compressor motor warranty extended to 5 years, parts only, no labor 1 x Evaporator (Unit cooler): Description: Air defrost Low profile coil (unit cooler) 115/1/60 with EC fan motors coil Model: LCA6135AEQRC6B Extras: with electric expansion valve, mounted CSSC Controller and ECM fan motors Include these items in base bid: LED Lighting Coated Coils

6 Condensing units set over roofing material over top of Cooler/Freezer boxes. Installation: Scope of work: Install a new 10' x 20' x 8'6" walk In cooler/freezer combo with floor Install a membrane roof Hang, pipe & drain (1) freezer and (1) cooler evaporator coil Set, pipe & startup (1) freezer and (1) cooler condensing unit Supply & install heat tape on freezer drain line Trim metal to finish door and sides at building, drip edge around exterior base Exclude: Sales tax, Electrical Work and Concrete work