diff --git a/tests/model_connectors/data/system_params_ghe_2.json b/tests/model_connectors/data/system_params_ghe_2.json
index 9744ce6c9..a4c3e2cb3 100644
--- a/tests/model_connectors/data/system_params_ghe_2.json
+++ b/tests/model_connectors/data/system_params_ghe_2.json
@@ -73,7 +73,7 @@
   "district_system": {
     "fifth_generation": {
       "central_pump_parameters": {
-        "pump_design_head": 300000,
+        "pump_design_head": 700000,
         "pump_flow_rate": 0.01
       },
       "horizontal_piping_parameters": {
diff --git a/tests/model_connectors/test_district_single_ghe.py b/tests/model_connectors/test_district_single_ghe.py
index fffe4695b..ed3757a6f 100644
--- a/tests/model_connectors/test_district_single_ghe.py
+++ b/tests/model_connectors/test_district_single_ghe.py
@@ -96,4 +96,7 @@ def test_simulate_district_system(self):
             f"{self.district._scaffold.project_name}.Districts.DistrictEnergySystem",
             run_path=self.district._scaffold.project_path,
             file_to_load=self.district._scaffold.package_path,
+            start_time=0,  # Day 0 (in seconds)
+            stop_time=86400,  # For 1 day duration (in seconds)
+            step_size=300,  # (in seconds)
         )