User Guide

Page 23
XP13 SERIES
WEIGH−IN CHARGING
LIQUID LINE SET DIAMETER
OUNCES PER 5 FEET (GRAMS PER 1.5 METERS)
ADJUST FROM 15 FEET (4.6 METERS) LINE SET*
3/8" (9.5 MM)
3 OUNCE PER 5’ (85 GRAMS PER 1.5 M)
*If line length is greater than 15 feet (4.6 meters), add this amount. If line length
is less than 15 feet (4.6 meters), subtract this amount.
Refrigerant Charge per Line Set Length
NOTE  The above nameplate is for illustration purposes only. Go to actual nameplate on outdoor unit for charge information.
NOTE  Insulate liquid line when it is routed through areas where the surrounding ambient temperature could become higher than the temperature
of the liquid line or when pressure drop is equal to or greater than 20 psig.
CALCULATING SYSTEM CHARGE FOR OUTDOOR UNIT VOID OF CHARGE
If the system is void of refrigerant, first, locate and repair any leaks and then weigh in the refrigerant charge into the unit. To calculate the total refriger-
ant charge:
Amount specified on
nameplate
Adjust amount. for variation in line set
length listed on line set length table below.
Additional charge specified per
match indoor air handler or coil
listed in table 3.
Total Charge
+
+
=
Figure 18. Using HFC−410A Weigh In Method
NOTE − Use gauge ports on vapor line valve and liquid valve for evacuating refrigerant lines and
indoor coil. Use true suction port to measure vapor pressure during charging.
OUTDOOR
COIL
CHECK / EXPANSION
VALVE
BI−FLOW FILTER / DRIER
COMPRESSOR
REVERSING VALVE
MUFFLER
NOTE − ARROWS INDICATE DIRECTION
OF REFRIGERANT FLOW
SERVICE
PORT
VAPOR
CHECK / EXPANSION VALVE
INDOOR UNIT
OUTDOOR UNIT
LIQUID LINE
SERVICE PORT
DISTRIBUTOR
INDOOR
COIL
TRUE SUCTION
PORT
Figure 19. Heat Pump Cooling Cycle