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WM&FD TWIN
051019
F
ITEMS TO ROUTE BEFORE INSTALLING THE EVAPORATOR UNITS
1.
Route the refrigerant lines from each evaporator unit toward each other using 3/8” OD copper tubing for the suction line and 1/4” OD
tubing for the liquid lines.
2.
Join both suction lines together using a 3/8” T-fitting. Install a 3/4” to 3/8” reducer at the outlet of the T-fitting. The remainder of the
suction line from the T-fitting to the condensing unit will need to be 3/4” OD copper tubing. (See page 34 for detailed piping
diagram.)
3.
Join both liquid lines together using a 1/4” T-fitting. Install a 3/8” to 1/4” reducer at the inlet of the T-fitting. The remainder of the liquid
line from the T-fitting to the condensing unit will need to be 3/8” OD copper tubing. (See page 34 for detailed piping diagram.)
4.
Route the display cable from the desired location to the desired master evaporator unit installation location (see page 22 for more
display information).
5.
Route the bottle probe cable from the desired thermostat bottle location to desired master evaporator unit installation location (see
page 21 for more bottle probe information).
6.
Route the drain lines from a proper discharge location to the desired evaporator unit installation locations (see page 20 for more
drain line information).
7.
Route the power cable wiring to the desired evaporator unit installation locations.
8.
Route an 18-5 thermostat wire between the desired evaporator unit installation locations.
3/8” suction line
SLAVE EVAPORATOR UNIT
DISCHARGE LOCATION
CONDENSING UNIT
BOTTLE PROBE
DISPLAY CABLE
MASTER EVAPORATOR UNIT
DISCHARGE LOCATION
18-5 THERMOSTAT
WIRE
55
°
F
3/4” suction line
3/8” liquid line
1/4” liquid line
3/8” suction line
1/4” liquid line
55
°
F
BLUE
GREEN
YELLOW
