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www.welbilt.com 800-225-9916 11
Pressure Regulating-Relief Valves:
WARNING
Do not defeat, cap, add piping to the outlet of the valve, or, attempt to
change the relief setting.
AVERTISSEMENT
Ne pas annuler, mettre un capuchon, ajouter de la tuyauterie à la prise de la
valve ou tenter de modifier le réglage de décharge.
Drain Lines:
Evaporator coil drain lines should be pitched a minimum of 1/2” per foot to allow proper
drainage and exit the walk-in as quickly as possible. Insulate and seal the drain line
where it passes through the wall. Copper drain line is required. Freezer compartment
drain lines must have heat tape wrapped around the copper drain line and must have
¾” thick insulation tubing. Do not locate drain line P-traps within the freezer space. Do
not reduce the drain line size. Locate a drain line P-trap outside of the cooler space.
Any outdoor P-traps exposed to low ambient temperatures should be wrapped with a
drain line heater (provide 20 watts of heat per foot of drain line at 0°F, 30 watts per foot
at -20°F. Freezer/cooler combo boxes can have one common drain line. However,
there must be a P-trap located between the freezer evaporator and the cooler
evaporator located inside the cooler compartment. The cooler compartment P-trap
should be located between the cooler evaporator and the external drain location.
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