SERVICING
63
Remote
Condenser Orifice
Size Remote
Heat Pump Orifice
Size
A/GS X1 3 01 81 A 0.04 9 A/GSZ13 0181 0 .049
A/GSX1 30181B 0. 051 A/GS Z13024 1 0. 057
A/GS X1 3 02 41 A 0.05 3 A/GSZ13 0301 0 .063
A/GSX1 30241B 0. 057 A/GS Z13036 1 0. 068
A/GSX130 301 0.05 9 A/GSZ 13042 1 0.074
A/GSX1 30301B 0. 061 A/GS Z13048 1 0. 078
A/GS X1 3 03 61 A 0.06 8 A/GSZ13 0601 0 .088
A/GSX1 30361B 0. 070 SS Z140361 A* 0. 071
A/GS X1 3 04 21 A 0.07 4 SSZ140 421A* 0. 076
A/GSX1 30421B 0. 076 SS Z140481 A* 0. 080
A/GS X1 3 04 81 A 0.08 0 SSZ140 601A* 0. 088
A/GSX1 30481B 0. 080
A/GSX130 601 0.09 2
SSX1 40181A 0. 049
SSX1 40241A 0. 057
SSX1 40301A 0. 063
SSX1 40361A 0. 067
SSX1 40421A 0. 074
SSX14 0421B 0. 074
SSX1 40481A 0. 079
SSX1 40601A 0. 088
A/SSX140 181B 0. 052
A/SSX140 241B 0. 055
A/SSX140 301B 0. 065
A/SSX140 361B 0. 070
S-105B THERMOSTATIC EXPANSION VALVE
The expansion valve is designed to control the rate of liquid
refrigerant flow into an evaporator coil in exact proportion to
the rate of evaporation of the refrigerant in the coil. The
amount of refrigerant entering the coil is regulated since the
valve responds to temperature of the refrigerant gas leaving
the coil (feeler bulb contact) and the pressure of the refrigerant
in the coil. This regulation of the flow prevents the return of
liquid refrigerant to the compressor.
The illustration below shows typical heatpump TXV/check
valve operation in the heating and cooling modes.
COOLING HEATING
TXV VALVES
Some TXV valves contain an internal check valve thus
eliminating the need for an external check valve and bypass
loop. The three forces which govern the operation of the valve
are: (1) the pressure created in the power assembly by the
feeler bulb, (2) evaporator pressure, and (3) the equivalent
pressure of the superheat spring in the valve.
0% bleed type expansion valves are used on indoor and
outdoor coils. The 0% bleed valve will not allow the system
pressures (High and Low side) to equalize during the shut
down period. The valve will shut off completely at approxi-
mately 100 PSIG.
30% bleed valves used on some other models will continue
to allow some equalization even though the valve has shut-off
completely because of the bleed holes within the valve. This
type of valve should not be used as a replacement for a 0%
bleed valve, due to the resulting drop in performance.
The bulb must be securely fastened with two straps to a clean
straight section of the suction line. Application of the bulb to
a horizontal run of line is preferred. If a vertical installation
cannot be avoided, the bulb must be mounted so that the
capillary tubing comes out at the top.
THE VALVES PROVIDED BY GOODMAN ARE DESIGNED
TO MEET THE SPECIFICATION REQUIREMENTS FOR
OPTIMUM PRODUCT OPERATION. DO NOT USE SUB-
STITUTES.
S-105A PISTON CHART FOR ASX13, GSX13,
SSX14, ASX14, ASZ13, GSZ13 units