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Dual DPDT Relays: Provides two independent Form C contacts for triggering multi-stage ventilation or local alarm indicators
0 psi minimum pressure differential
which prevents delayed ignition bangs and stabilizes the combustion envelope
The inclusion of a 30-inch capillary tube allows for flexible sensing bulb placement
In low and high-pressure hydronic loops
Arrco AA34KP-HFD Compressor 321042-401 Dual DPDT Relays: Provides twoThe Arrco AA34KP HFD is a premier 3 ton R410A compressor designed specifically for demanding commercial and industrial HVAC applications. Operating on 460V 3 phase power, this high efficiency unit serves as a robust replacement for ZP34K5E TFD 800, ensuring a seamless fit for technicians and facility managers undertaking system upgrades. Engineered for superior thermal performance, it maintains tight temperature control in residential and light