Water Heaters

WATER HEATERS

Precision water heaters are built for heavy commercial, institutional and industrial applications. Our designs rely on conventional, time-tested technology that is highly reliable, simple to maintain, and delivers exceptionally long service life. Available in a variety of standard tank sizes, recoveries, and vessel configurations, Precision has a storage water heater that will fit most any specification and will deliver the performance and reliability that system design engineers and facility owners demand. They are available in electric (HWS series), fossil-fuel fired (FPW series), or indirect heated designs, lined with either Precision Seal (PS) or Aluminum Silicate Cement (C), both NSF-61 compliant. Our PS lining is a two-part-epoxy alternative to glass, which is suitable for storing water up to 180oF, prevents buildup and corrosion and, unlike glass linings, can be repaired in the field. Our water heaters are commonly used to heat potable water for: K-12 school buildings, college and university buildings, dorms, hospitals, office buildings, government buildings, etc.

Plumbing

HWS Electric Commercial Water Heater

Capacities: 125 gallons to 5,000 gallons
Standard Model: ASME Section IV, “HLW” Stamp
Compliances: UL Subject 834, NEC/NFPA Article 424-G, ASME Safety Code CSD-1, NSF-61

When you need a lot of domestic hot water, quickly and reliably. The HWS commercial volume storage water heater is designed for industrial, commercial and institutional users who require large quantities of service water at preset temperatures. Two different NSF-61 compliant lining options are available: our standard PS lining is a two-part epoxy that delivers service performance that is superior to glass; the aluminum silica cement is recommended for water temperatures above 190oF and offers the longest service life. Standard models are configured with a vertical vessel; horizontal models can be ordered.

  • Recovery ranges from 123 GPH to 1,968 GPH (30 KW to 480 KW) @ 100oF temperature rise
  • Vessels are available in both 125 psi and 150 psi design pressures
  • All models are lined with either Precision Seal (PS) or Aluminum Silicate Cement (C), both NSF-61 compliant
    • PS: our two-part epoxy alternative to glass lining, suitable for storing water up to 180oF and unlike glass, can be repaired in the field; PS lined vessels include a five-year warranty, with the last two years pro-rated
    • C: cement, suitable for higher temperature service, up to 250oF and/or for tanks larger than 36” diam.; cement lined vessels include a ten-year warranty, with the last five years prorated
  • Each heating element is fitted with its own 2-1/2” square mounting flange, installed in the head of the vessel to simplify maintenance and reduce downtime
  • Step Circuit Enable/Disable switches make it easy to limit water heater’s maximum firing rate when other higher priority electric loads are peaking
  • Requires no vent stack, breeching, or combustion air louvers—reducing total installation costs and speeding up completion

O&M Manual

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FPW Water Heater

Capacities: 100 gallons to 1,500 nominal gallons
Standard Model: ASME Section IV
Compliances: UL Subject 795/726/2096, ASME Safety Code CSD-1, NSF-61

Conventional fire-tube construction in a water heater design. The FPW offers 84% efficiency with reduced burner cycling, proven fire-tube reliability, simple installation, and easy access for servicing with its simple 4-pc. design.

  • Recovery ranges from 394 GPH to 3,032 GPH @ 100oF temperature rise
  • Dump loads range from 100 gallons to 1,500 gallons
  • All standard models are available in both 125 psi and 150 psi design pressures
  • All models are lined with either Precision Seal (PS) or Aluminum Silicate Cement (C), both NSF-61 compliant
    • PS: our two-part epoxy alternative to glass lining, suitable for storing water up to 180oF and unlike glass, can be repaired in the field; PS lined vessels include a five-year warranty, with the last two years pro-rated
    • C: cement, suitable for higher temperature service, up to 250oF and/or for tanks larger than 36” diam.; cement lined vessels include a ten-year warranty, with the last five years prorated

O&M Manual

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PHWS Indirect Fired Water Heater

Capacities: 125 gallons to 4,000 gallons of actual capacity; contact us for larger options available
Standard Model: ASME Section IV, “HLW” Stamp (vessel) and Section VIII (heat exchanger)

The PHWS uses existing thermal energy sources to heat domestic hot water. The vessel is fitted with a shell-and-tube heat exchanger that accepts either process steam or high temperature hot water to heat the potable water stored inside the NSF-61 compliant vessel. For ease of installation, the heater is shipped fully assembled and ready to use with all the accessories factory-sized, pre-piped and pre-wired. The PHWS saves time, money and manpower that would otherwise be used to a install separate fuel-burning device inside the facility.

  • Storage capacities range from 125 gallons to 4,000 gallons of actual capacity.
  • Vessels are available in both 125 psi (400 gal. and larger) and 150 psi design pressures, and both can be ordered in either horizontal or vertical configurations
  • All models are lined with either Precision Seal (PS) or Aluminum Silicate Cement (C), both NSF-61 compliant
    • PS: our two-part epoxy alternative to glass lining, suitable for storing water up to 180oF and unlike glass, can be repaired in the field; PS lined vessels include a five-year warranty, with the last two years pro-rated
    • C: cement, suitable for higher temperature service, up to 250oF and/or for tanks larger than 36” diam.; cement lined vessels include a ten-year warranty, with the last five years prorated
  • Potable water is heated by a single-wall or double-wall shell-&-tube heat exchanger(s) equipped with either copper or copper-nickel tubes and selected to fit the unique recovery requirements of each application; can be water-to-water or steam-to-water
  • Vessels are available with or without insulation and jacketing

O&M Manual

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