Installation
Notice
Risk of Property Damage
Install the Quick Response Expansion Valve and Precision Superheat Controller according to the
instructions and guidelines included with the device. These instructions and guidelines are intended
to reduce the risk of malfunction of the device and resulting property damage. Failure to follow these
instructions and guidelines could cause the device to malfunction, resulting in property damage.
Notice
Risque de dégâts matériels
Installez ce détendeur de réponse rapide et régulateur de surchauffe les instructions et directives
fournies avec le appareil. Ces instructions et directives sont destinées à réduire les risques de mauvais
fonctionnement de l’appareil et de dégâts matériels. Le non-respect de ces instructions et directives
pourrait provoquer un dysfonctionnement de l’appareil et causer des dégâts matériels.
Use a wiring harness to connect the QREV and PSHC. Mount the suction line temperature sensor at the
outlet of the evaporator to measure the temperature of the vapor leaving the evaporator. Figure 7 shows
a typical application. Install the PSHC at the outlet of the evaporator. The PSHC replaces the thermostatic
expansion valve’s (TXV) bulb or electronic expansion valve’s (EEV) controller sensing device.
Connect and braze the QREV to the evaporator inlet in the proper direction and orientation. See
for more details and guidelines.
Connect the PSHC to a 1/4 in. SAE external-thread flare access valve. See
details and guidelines.
Wire the PSHC to the QREV and connect them to the appropriate power source. See
details and guidelines.
Figure 7: QREV and PSHC installed on a typical evaporator
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Quick Response Expansion Valve and Precision Superheat Controller Installation Guide
