Milnor 6458, Installation Manual

Page: 62 / 93

Pellerin Milnor Corporation
CAUTION:
Machine Damage Hazards —
Valve bodies have fragile components.
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Do not distort valve bodies. Hold tension against these valves with a
wrench on the side of the valve onto which the pipe is being connected to
prevent twist distorting the valve.
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Always install unions and shut off valves at the water and steam con-
nection points to permit removal of the machine components for servicing.
1.1.2. Gas and Propane Models
BNDUUI01.C05 0000243235 A.7 A.3 1/2/20 1:40 PM Released
WARNING:
Explosion and Fire Hazards — Improperly installed gas-fired devices
can release gas.
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Conform with local codes or, in their absence, with the
National Fuel
Gas Code, ANSI Z223.1/NFPA 54 or the Natural Gas and Propane In-
stallation Code, CSA B149.1 or a superseding directive.
�
Electrically ground the machine in accordance with local codes or, in
their absence, with the
National Electric Code, ANSI/NFPA 70
or the
Canadian Elec-
trical Code, CSA C22.1 or a superseding directive.
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Install a minimum 1/2 inch NPT plugged tap, accessible for test gauge connection,
immediately upstream of the gas supply connections to the dryer.
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Install vent lines on any regulator vents and vent this gas to the outdoors.
WARNING:
Explosion, Fire, and Machine Damage Hazards — Excessive gas pres-
sure can damage gas train components, possibly resulting in the release of
gas.
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Make sure that the pressure of gas entering the dryer is regulated to the
maximum specified in this document.
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Isolate the dryer from the gas supply for any pressure testing of the in-
coming gas supply line.
1.1.3. Steam and Thermal Oil Models
BNDUUI01.C06 0000243234 A.7 A.3 1/2/20 1:40 PM Released
CAUTION: Machine Malfunction Hazard — Steam traps rated at 85 to 180 psi (586
to 1241 kPa) will not operate properly below 60 psi (414 kPa). Steam traps
rated at 160 to 225 psi (1103 to 1551 kPa) will not operate properly below
115 psi (793 kPa).
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Conform to the rated pressure of the steam coil as stated on the ma-
chine nameplate.
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Choose a steam trap with a pressure rating corresponding to the actual pressure
supplied.
Utility Requirements For Gas, Steam and Thermal Oil Dryers
58