(4) Heating coil discharge temperature: minus one to plus 82
degrees C in one degree C 30 to 180 degrees F in 2 degree F
graduations.
(5) Hydronic heating systems below 104 degrees C 220 degrees F:
4 to 116 degrees C in one degree 40 to 240 degrees F in 2 degree
graduations.
(6) Chilled water temperature: minus 18 to plus 38 degrees C in
1/2 degree C 0 to 100 degrees F in one degree F graduations.
(7) Condenser water temperature: 4 to 60 degrees C in 1/2 degree
C 40 to 140 degrees in one degree F graduations.
(8) Glycol temperature: minus 18 to plus 38 degrees C 0 to 100
degrees Ffor cooling service in 1/2 degree C one degree F
graduations, and 4 to 116 degrees C 40 to 240 degrees F for
heating service in one degree C 2 degree F graduations.
(9) High temperature hot water: 38 to 288 degrees C in 3 degree C
100 to 550 degrees F in 5 degree F graduations.
2.11.2
Pressure Gages
Provide pressure gages with gage cock, snubber, and syphon.
a.
ASME B40.1. Gages shall be 65 mm 2 1/2 inch (nominal) size,
back-connected, suitable for field or panel mounting as required,
shall have black legend on white background, and shall have a
pointer traveling through a 270 degree arc. Accuracy shall be
plus or minus 3 percent of scale range.
b.
Gages for indicating signal output to pneumatic actuators and main
air gages shall have scale of 0 to 210 kPa (gage) in 10 kPa 0 to
30 psig in 1 psig graduations.
c.
Gages for air storage tanks and for use before and after dirt and
oil filters or dryers, shall have a scale of [0 to 1100] [_____]
kPa (gage) [0 to 160] [_____] psig with 15 Kpa (gage) 2 psig
graduations.
d.
Gages for [hydronic] [and] [steam] system applications shall have
ranges and graduations as indicated.
e.
Pneumatic transmission receiver gages shall have a range to match
the respective transmitters.
2.12
LOW-DIFFERENTIAL PRESSURE GAGES
Gages for low-differential pressure measurements shall be 115 mm 4 1/2 inch
(nominal) size with two seats of pressure taps, and shall have a
diaphragm-actuated pointer, white dial with black figures, and pointer zero
adjustment. Gages shall have ranges and graduations as indicated.
Accuracy shall be plus or minus 2 percent of scale range.
2.13
CONTROLLERS
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SECTION 15901N
Page 31
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