---
title: HVAC Pump Start-Up Form
description: "Downloadable PDF Instructions: Wye‐Delta Open & Closed Transition and Part Winding ATL, Soft Start, Autotransformer, Primary Resistor and VFD"
---

# HVAC START-UP FORM

### Downloadable PDF Instructions:

[ Wye‐Delta Open & Closed Transition and Part Winding ](https://sthinc.com/hubfs/STH%20April%202025/documents/Wye-_Delta_Open__Closed_Trasition_and_Part_Winding.pdf?hsLang=en)  
[ ATL, Soft Start, Autotransformer, Primary Resistor and VFD ](https://sthinc.com/hubfs/STH%20April%202025/documents/ATL_Soft_Start_Autotransformer_Primary_Resistor_and_VFD.pdf?hsLang=en)