Arrived onsite and removed the existing 5/8” copper gas line from the regulator. Installed a new 3/4” black iron manifold and ran a 1/2” copper gas line to the Modine heater. Leak checked at 8.5 in/wc for 3 minutes, no leaks present. Installed a thimble on the interior wall. We did not have the vent adapter on hand, so we will need to return to complete the installation. We will call to schedule the follow-up visit. 12/3/25 installed thimble in exterior wall and vent. Checked c.o. levels, no leaks present. Adjusted manifold pressure to 10 in/wc and verified operation, system is working properly at this time.
