2. Select the Best Location
Air-to-Water Heat Pump _ 2
Part 2. Desing and installation
1. Select space for installing unit, which will meet the following conditions:
• No direct thermal radiation from other heat sources
• No possibility of annoying neighbors by noise from unit• No exposition to strong wind
• With strength which bears weight of unit
• Note that drain flows out of unit when heating
• With space for air passage and service work shown next
• Because of the possibility of fire, do not install unit to the space where generation, inflow, stagnation, and leakage of
combustible gas is expected.
• Avoid unit installation in a place where acidic solution and spray (sulfur) are often used.
• Do not use unit under any special environment where oil, steam and sulfuric gas exist.
• It is recommended to fence round the unit in order to prevent any person or animal from accessing the unit.
• If installation site is area of heavy snowfall, then the following directions should be observed.
- Make the foundation as high as possible.
- Fit a snow protection hood.
2. Select installation location considering following conditions to avoid bad condition when additionally performing defrost
operation.
• Install the unit at a place well ventilated and having a lot of sunshine in case of installing the product at a place with a
high humidity in winter (near beach, coast, lake, etc).
(Ex) Rooftop where sunshine always shines.
• Performance of heating will be reduced and preheat time of the unit may be lengthened in case of installing the unit in
winter at following location:
- Shade position with a narrow space
- Location with much moisture in neighboring floor.
- Location with much humidity around.
- Location where ventilation is good.
It is recommended to install the unit at a place with a lot of sunshine as possible as.
- Location where water gathers since the floor is not even.
3. When installing the unit in a place that is constantly exposed to a strong wind like a coast or on a high story of a building,
secure a normal fan operation by using a duct or a wind shield.
• Install the unit so that its discharge port faces to the wall of the building.
Keep a distance 300mm or more between the unit and the wall surface.
• Supposing the wind direction during the operation season of the air conditioner, install the unit so that the discharge port
is set at right angle to the wind direction.
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