HVAC Installation: HVAC heat pumps installation

May 24, 2009 - PRLog -- Heating, ventilating, and air conditioning (HVAC) systems should provide comfort as efficiently as possible. Equipment sizing, system design and installation will all determine the overall efficiency and performance of an HVAC system, and how well the system is maintained will determine how quickly that efficiency degrades.

Procedures For HVAC System Design and Installation

The goal for a Heating, Ventilation and Air Conditioning (HVAC) system is to provide proper air flow, heating, and cooling to each room. This page sets out key criteria that describe a quality system, and key design and installation considerations that should be met to achieve this goal. The pages following contain more detailed information on design, fabrication, installation, and performance testing.
Criteria for a Quality HVAC System
An HVAC system should:

  1. Be properly sized to provide correct air flow, and meet room-by-room calculated heating and cooling loads.
  2. Be installed so that the static air pressure drop across the handler is within manufacturer and design specifications to have the capacity to meet the calculated loads.
  3. Have sealed supply ductwork that will provide proper air flow.
  4. Be installed with a return system sized to provide correct return air flow.
  5. Have sealed return ductwork that will provide proper air flow to the fan, and avoid air entering the HVAC system from polluted zones (e.g., fumes from autos and stored chemicals, and attic particulates).
  6. Have balanced air flows between supply and return systems to maintain neutral pressure in the home.
  7. Minimize duct air temperature gain or loss between the air handler and room registers, and between return registers and the air handler.
  8. Be properly charged with refrigerant.
  9. Have proper burner operation and proper draft.

Procedures to Design and Install an Air Distribution System
The following steps should be followed in the design and installation of the HVAC Installation to ensure efficiency and comfort--

  1. Determine room-by-room loads and air-flows using ACCA Manual J calculation procedures (or substantially equivalent).
  2. Layout duct system on floor plan, accounting for the direction of joists, roof hips, fire-walls, and other potential obstructions. Determine register locations and types, duct lengths, and connections required to produce layout given construction constraints.
  3. Size duct system according to ACCA Manual D calculation procedures (or substantially equivalent).
  4. Size HVAC equipment to sensible load using ACCA Manual S procedures (or substantially equivalent).
  5. Install equipment and ducts according to design specifications, using installation requirements and procedures from the Uniform Mechanical Code, the Air Diffusion Council, SMACNA, California Residential Energy Efficiency Standards, and manufacturers' specifications (Title 24); Using these procedures and those in Appendix A, the duct system should be substantially air tight.
  6. Charge the system appropriately, and verify charge with the evaporator superheat method or subcooling method (or substantially equivalent).
  7. Check for proper furnace burner operation and fire-box drafting.
  8. Test the system to ensure that it performs properly by determining (1) that the system is properly sized, (2) it does not leak substantially, and has either (3a) proper air handler fan flow, and proper plenum static pressures, or (3b) proper room and return air flows, and proper plenum static pressures.

New generation of heat pump technology.
March 29th, 2009

The New Generation is Here!

On the outside it appears to be the same as any other ground source heat pump, but inside there are even more new features. A new generation of ground source heat pump technology!

NIBE FIGHTER 1250 is the first complete, speed controlled ground source heat pump ever. With its inverter controlled compressor, integrated hot water cylinder and intelligent control computer it is nothing less than a revolution.

This means that the heat pump always automatically adjusts itself to the output requirements of the house has at any time. When more heat or hot water is required, the output increases, when not so much is needed, it drops to a lower speed.
Extend, build a pool, renovate …

Choosing NIBE FIGHTER 1250 does not mean you get caught up in the technology either. The high efficiency (max 16 kW) means that you can extend your house and attach a pool in the future without having to extend the heat pump’s capacity.

A further advantage is that it requires little space and is easy to install.
* Has an integrated 160 litre hot water cylinder.
* Adjusts the output between 4.5 and 16 kW depending on the house’s actual requirement.
* Integrated 8 kW immersion heater connects automatically as reserve operation if something unexpected should occur.
* Equipped with control computer for optimum and safe operation. Clear information about status, operation time and all temperatures in the heat pump shown on LCD display.
* Integrated clock for scheduling extra hot water and temperature lowering/increasing the flow line temperature.
* Prepared for connection to extra hot water heater, ventilation recovery, pool heating etc.
* Can cool on hot summer days using fan convectors.

Prepared for control of two heating systems at different temperatures, e.g. radiators and under floor heating.
Control and check the heat pump via Internet or mobile phone

By installing a communication module you can increase or lower the room temperature, activate extra hot water or just check that everything functions as it should, where ever you are in the world, via Internet or SMS. In addition, it is possible to connect a movement alarm or freeze protection in the same simple way.

For even more convenience, allow a service company to take care of controlling the heating via the communication module RCU 10.
The market’s best annual heat factor

As the ground source heat pump ensures that it always runs at the correct performance all year round, it produces maximum benefits and lower operational running costs.

An inverter controlled compressor and circulation pumps mean that no backup is needed, which in turn, leads to a higher annual average efficiency and lower running costs.

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