This replacement humidistat cover ensures a precise fit

Is this a direct replacement for the Carrier HC39VA231

Can this heater be used on 230V systems

reducing potential leak points

Reznor 174810 Relay 30067439-890 This replacement humidistat cover ensuresThe Reznor 174810 Time Delay Relay is a critical OEM replacement component designed for official use in Reznor HVAC equipment, including gas fired unit heaters and furnace systems. Engineered to manage the precise timing and sequencing of electrical circuits, this relay effectively controls the fan pre purge and cooling periods. By delaying the start or stop of the blower motor in relation to the burner cycle, the 174810 relay prevents short cycling,