Crestline Equipment Schedule / ASHRAE Handbook

Crestline Equipment Schedule

This installation is acceptable. The radiator WH-2 is operating near its schedule point at 119°F EWT and 101°F LWT (18°F delta-T) with 0.3 GPM flow. By energy balance, the heat the water gives up is exactly Q = 500 × 0.3 × 18 = 2,700 BTU/hr — that IS the radiator's actual heat output, not a 'theoretical' value. That is about 15% above the 2,339 BTU/hr scheduled output, so the unit is over-delivering slightly versus its design point. The gap is not a heat-transfer-coefficient effect: the coefficient and fin/air-side performance determine what delta-T you GET, but once flow and delta-T are measured the output is fixed by energy conservation. A modest over-delivery like this is normal and acceptable in the field.

Crestline Equipment Schedule / AHRI 1230

The measured values match the scheduled capacity exactly. FCU-B2-1-06 at 4.5 tons nominal delivers 52.7 MBH total and 45.9 MBH sensible cooling per the schedule. The sensible heat ratio (SHR) is 0.87 (45.9/52.7), indicating this indoor unit handles mostly dry cooling loads. The heating capacity of 68.9 MBH should also be verified during winter commissioning. The unit connects to outdoor unit HR-B2-R-01 (34-ton heat recovery), which serves multiple indoor units simultaneously.

Crestline Equipment Schedule / ASHRAE 90.1

The pump is operating at its scheduled design point. PHWP-5 at 165 GPM, 16 ft WG, and 69.7% efficiency matches the equipment schedule exactly. The 3x3x7C designation means 3-inch suction, 3-inch discharge, 7-inch impeller (C trim). The 69.7% efficiency is acceptable for a pump of this size — ASHRAE 90.1 establishes minimum pump efficiency requirements based on flow and head. This pump uses a 3 HP motor at 460V/3-phase, and at 69.7% efficiency the calculated brake horsepower is about 0.96 HP, well within the motor's capacity.

Crestline Equipment Schedule / ASME

The expansion tank fill pressure of 30 PSIG matches the equipment schedule specification. The pre-charge pressure must be set above the system static pressure (25 PSIG at tank elevation) to prevent the tank diaphragm from being fully compressed by static head before the system heats up. At 30 PSIG, the tank provides 5 PSI above static to ensure proper expansion volume is available when the system heats from fill temperature to operating temperature. The tank absorbs the volume increase as water expands, preventing the pressure relief valve from opening during normal operation.

Crestline Equipment Schedule / ASME BPVC

The pressure relief valve is set 10 PSI above the boiler's rated working pressure. Per ASME Boiler and Pressure Vessel Code, the relief valve must be set at or below the maximum allowable working pressure (MAWP) of the vessel — which is 150 PSIG for this Fulton EZE-480. Setting the relief valve at 160 PSIG means the boiler could operate above its rated pressure before the valve opens, risking vessel failure. The relief valve must be reset to 150 PSIG or lower. The boiler operates at EWT 100°F / LWT 120°F with only 2.5 ft WG pressure drop.

Crestline Equipment Schedule / IMC 607

This is correct. Per the Crestline schedule, fire-only dampers (FD = Ruskin DFD60) use fusible links — a passive thermal element that melts at a set temperature (typically 165°F), allowing a spring to close the damper. No motor or electrical connection is needed. This is different from fire smoke dampers (FSD = Ruskin FSD60) which require motorized actuators at 120V to respond to smoke detection signals. Fire-only dampers are simpler, cheaper, and appropriate where only fire rating is required (no smoke detection needed).