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Utilizing a 24V transformer with this unit will fail to engage the contacts
the H19NA-4 is identical to H19NA-4C
Field Reliability: High-grade construction eliminates failures common with generic aftermarket refrigerant components
providing the exact factory-spec lengths required for a clean
They share the same mounting footprint and electrical specs
Robertshaw 700-053 Valve 321702-401 Utilizing a 24V transformer withThe Robertshaw 700 053 is a heavy duty, 2 stage natural gas valve engineered for high capacity heating applications in both residential and commercial environments. This 24V gas valve features a versatile 3 4" NPT inlet and 3 4" NPT outlet, delivering a robust capacity of up to 300,000 BTU to meet the demands of large furnaces and boilers. Designed for modern ignition sequences, this 700 series unit is compatible with Intermittent Pilot (IP), Hot