How to Use the Pump Calculator

Department Setup (first-time users)

Do this once per device. Your selections become the default hoses, nozzles, accessories, and Line 1–3 setups used on the main calculator.

1. From the main screen, open the About / Menu and tap Department Setup.
2. Select your department’s standard hoses, nozzles, and any accessories you use.
3. Set default values for Line 1, Line 2, and Line 3 (diameter, length, nozzle, elevation, etc.).
4. Tap Save. These become your new defaults on the calculation page and in dropdown lists.

You can update Department Setup anytime. The calculator will use whatever is currently saved.

Quick Start (60s)

1. First time? Go to About → Department Setup, choose your hoses, nozzles, accessories, and Line 1–3 defaults, then tap Save.
2. Back on the main screen, press Line 1 to deploy it.
3. Tap the + at the hose tip to open the editor.
4. Pick Diameter & Length. If using a Wye, set Wye = On and enter branch lengths.
5. Choose a nozzle from your Department Setup list or accept the default.
6. Switch supply: Hydrant or Tender.
7. Tap Why? to see the PP breakdown and friction loss math.

Deploy a Line

Steps

1. Toggle a line (Line 1–3) to make it visible.
2. Tap the + near the hose end to open the editor.
3. Set Diameter and Length. 1¾″ defaults to 185 @ 50; 2½″ defaults to 265 @ 50 (Fog preferred), or to whatever you set in Department Setup.
4. Tap Apply.

Wye & Branches

Nozzle Defaults

These are the factory defaults; your own department selections may replace them.

• 1¾″ → Fog 185 @ 50
• 2½″ → Fog 265 @ 50
• Branch B default (when creating Wye) → Fog 185 @ 50

If you’ve customized nozzles in Department Setup, those values will appear in the dropdown menus on the calculator.

Tender Shuttle

Adding tenders & seeing total shuttle GPM

1. Switch supply to Tender.
2. Enter Tender ID and Capacity, then press Add Tender.
3. Watch Total Shuttle GPM update as tenders cycle.

“Why?” Math

Tap Why? on the main view to see NP, branch/main friction loss, Wye loss, and elevation contributions. This uses your current hose, nozzle, and elevation choices from the editor.

Troubleshooting