Sinclair GSH ERB-3 Series, Руководство по обслуживанию

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1.4 Design Principle
(1) Cooling: capacity of the unit ≥ cooling load of the air conditioning
(2) Heating: capacity of the unit ≥ max{ heating load, floor heating load, water heating load}
(3) Water Tank: it should be selected based on the sanitary outfit or quantity of users. Each unit can
accommodate only one water tank.
2 Selection of the Underfloor Coils
2.1 Calculation of Unit Load for Floor Heating
Empirical Values of Floor Heating Load Per Square Meter
House W/m
2
Dining Room 100~120
Master Room 100~110
Guest Room 110~130
Study Room 90~110
Villa W/m
2
Dining Room 110~140
Master Room 100~120
Guest Room 100~130
Study Room 100~120
Notes:
(1) Villas whose load is generally larger than the houses should take the value between the middle and the
maximum empirical values listed above.
(2) The top layer whose load is generally larger than the middle or bottom layer should take the maximum
empirical value.
(3) The guest room whose load is generally much large should take the value between the intermediate and
the maximum empirical values listed above.
(4) For those whose external walls or glass areas are large, it is recommended to take the load calculation.
(5) The heating load for the bathroom is generally 500W/room.
2.2 Selection of Tube Spacing of the Underfloor Coils
Tube spacing of the underfloor coils which will directly affect heat dissipation of the floor depends on the tube
material, indoor design temperature, supply water temperature and floor material.
Heat Dissipation of Commonly Used Coils
(Tube material: PE-X, Indoor temperature:18°C, Average water temperature:45°C)
Floor
Material
Thermal Resistance
m
2
·K/W
Tube Spacing
mm
Heat Dissipation
W/m
2
Tube Spacing
mm
Heat
Dissipation
W/m
2
Stone 0.02 200 147.0 150 159.8
Wood 0.075 200 111.2 150 117.8
The dissipated heat of the floor coil is larger than the load for the floor heating system; however the deviation
cannot be larger than 10%.
2.3 Selection of Loop Quantity of Coils for Each Room
2.3.1 Type of Underfloor Coils
When selecting underfloor coils, we should consider both their comfortability and heating capacity. The most
commonly used coils are as shown below.