Use this refrigerant sight glass to identify flash gas caused by liquid line restrictions or a shortage of refrigerant

When uptime is the priority

For field adjustments

Moisture Detection: High-contrast indicator core provides immediate visual confirmation of desiccant saturation levels

While possible in some configurations

Tjernlund Products 950-1040 Relay 320074-702 Use this refrigerant sight glassThe Tjernlund 950 1040 Relay is a specialized 24VAC VAC relay designed for demanding HVACR control circuits. As a field proven power venter relay kit, this component is essential for technicians servicing Tjernlund HSUL series, HS 3, HS 4, and GPAK units. It facilitates critical interlocking between the appliance and draft inducer, ensuring the 24V control circuit can effectively trigger 115V motorized loads. When used as a replacement relay or an