From dfd114b1f63c4900ee16edcd4f267f5ba59f956e Mon Sep 17 00:00:00 2001
From: Chip Barnaby <chipbarnaby@gmail.com>
Date: Tue, 30 Apr 2024 12:57:19 -0400
Subject: [PATCH] Change DHW deltaT limit to 0 F (was 1 F)

---
 src/dhwcalc.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/dhwcalc.cpp b/src/dhwcalc.cpp
index 839b53d06..626bc8f70 100644
--- a/src/dhwcalc.cpp
+++ b/src/dhwcalc.cpp
@@ -4890,7 +4890,7 @@ RC DHWHEATER::wh_DoSubhrTick(		// DHWHEATER energy use for 1 tick
 			rc |= wh_InstUEFDoSubhrTick(drawForTick, tInletMix, scaleWH, pWS->ws_tUse);
 
 		else
-		{	float deltaT = max(1.f, pWS->ws_tUse - tInletMix);
+		{	float deltaT = max(0.f, pWS->ws_tUse - tInletMix);
 
 			float HARL = drawForTick * waterRhoCp * deltaT;		// load on this heater, Btu