Provide and locate on wall outside boiler room entrance or just inside
door, when boiler room door is on building exterior to allow rapid and
complete shutdown of the boiler in the event of an emergency. Emergency
switch shall be a [_____]-amp. fuse-type safety switch. Switch shall be
red and furnished with a label indicating function of switch.
2.3.2
Provide relieving capacity for the full output of boiler installed.
Relief-valve piping shall conform to ASTM A 53, schedule 40 steel pipe and
be piped full-size [to a floor drain] [to 150 mm 6 inches above floor].
2.3.3
Pressure and Altitude Gage or Combination Pressure/Altitude Gage
MIL-B-18897. Provide one located on supply water piping and one on return
water piping.
2.3.4
Thermometer
Provide thermometer with a scale equivalent to 1.5 times outlet water
temperature. Provide one located on supply water piping and one on return
water piping.
2.3.5
Drain Tapping
Provide drain valve and piping [to a floor drain] [to 150 mm 6 inches above
floor].
2.3.6
Make-up Water Station
2.3.6.1
Pressure Reducing Station
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NOTE: Select operating pressure required.
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Provide a water pressure-reducing valve and relief valve, or a combination
of the two in the makeup water line to the boiler to maintain a water
pressure of [83 kPa (gage)] [12 psig] [_____] in the hot water system.
Provide a 20 mm 3/4 inch globe valve by-pass around this valve.
2.3.6.2
Backflow Preventers
Section 15400 PLUMBING SYSTEMS.
Locate upstream of by-pass.
2.3.7
Feedwater Treatment Feeder
Provide in accordance with MIL-F-18113, Type II - Shot-Type Feeder (manual,
intermittent feed), Style A - for use with pressures up to 1379 kPa (gage)
200 psig maximum.
2.3.8
Combustion Regulator
Provide adjustable temperature, thermostatic immersion type that shall
limit boiler water temperature to a maximum of 121 degrees C 250 degrees F.
Control shall actuate burner through an electric relay system to maintain
boiler water temperature within normal prescribed limits at loads within
rated capacity of boiler.
SECTION 15514N
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