by HVAC Builder
Open this system in HVAC Builder Load it into the 3D builder, adjust it to your project, and solve it against your own climate — or drop it into a building model and simulate a full year.
A packaged rooftop unit: outside-air damper with an economiser, DX coil on four scroll compressors, a gas duct furnace at 80 % and a supply fan, on a two-fan air-cooled condenser. Its heat is gas — reported as fuel, never as electricity — which is what separates a rooftop's winter from a heat pump's. Published as an example; the figures below are solved from this model.
Example45–65 kW heating + coolingEUExample system. Published by HVAC Builder to show suppliers what their own page looks like. There is no company behind it and it is not a product offer — the specification is generic and the performance is solved from the model on this page.
Solved from this example's own model each time the page loads — the same numbers a supplier's page shows for their machine.
| Component | Kind | Duty |
|---|---|---|
| Outside-air damper: 30 % OA, economiser, 07–18 | damper | 0.0 kW |
| Return damper | damper | 0.0 kW |
| DX coil | dxEvaporator | 58.1 kW |
| Gas furnace, 80 % | heater | 0.0 kW |
| Supply fan | fan | -1.4 kW |
| Scroll compressors (4 × ZP49KHE) | compressor | 12.5 kW |
| Air-cooled condenser | condenser | -70.0 kW |
| Condenser fans (2) | fan | -2.4 kW |
Every air-coil refrigerant circuit here is reversible, so this machine is also a heat pump. Solved with the circuit running backwards at the standard air-to-air heating rating point — outdoor 7 °C dry bulb / 6 °C wet bulb, indoor 20 / 15 °C (EN 14511) — not at the supplier's own design conditions above, so the two ratings can be compared across machines.
Publish your own range and this slot becomes your branded page — your data, your logo, your product link, and quote requests that reach you. Free to register and free to publish.