substitution request - Alliance Construction Solutions

D. Construction: ASME construction for 125 psi design pressure at 300 deg. F.
2.03 WATER-TO-WATER PLATE HEAT EXCHANGER:
A. This Contractor shall provide plate heat exchanger of capacity as scheduled and where
shown on the drawings with embossed heat transfer plates, perimeter gaskets, guide rails,
and frames and compression bolts.
B. Units shall be ASME rated for 125 psig operating pressure, 300 deg. F. maximum
temperature, have a heat transfer area to be produce the conditions scheduled on the
drawing.
C. Plates shall be Type 316L stainless steel and copper brazed.
D. Nozzles shall be 150 lb. ASA rated loose flange type, of the size called for on the
drawings.
PART 3 – EXECUTION
3.01 INSPECTION:
A. Examine areas and conditions under which heat exchangers are to be installed. Do not
proceed with work until unsatisfactory conditions have been corrected in manner
acceptable to Installer.
3.02 WATER-TO-WATER U-TUBE HEAT EXCHANGERS:
A. General- Install water-to-water U-tube heat exchangers as indicated, and as specified
herein.
B. Mounting: Mount heat exchangers on steel floor stands as indicated, located for required
clearance for tube bundle removal.
C. Mounting: Mount heat exchangers on trapeze hangers as indicated, located for required
clearance for tube bundle removal.
D. Water Piping: Provide piping as indicated, including union, shutoff valve, and
thermometer on each inlet and outlet connection; relief valve on tube bundle outlet, with
outlet piped to floor drain; and ½” drain valve on shell drain connection.
3.03 INSTALLATION OF WATER-TO-WATER PLATE AND FRAME HEAT EXCHANGERS:
A. General: Comply with water-to-water plate and frame heat exchanger manufacturer's
instructions for installation.
B. Install water-to-water plate and frame heat exchangers, piping and accessories in
accordance with manufacturer's instructions.
Project No.: 10145
550 15 th Street Dual Brand Hotel
03/16/2012
22 3500 - 3 DOMESTIC WATER HEAT
EXCHANGERS