Caleffi solar NAS20053, Инструкция по установке, наладке и обслуживанию

Страница: 6 / 24

Page 6
SECTION I: SPECIFICATIONS (cont.)
Model
Actual Tank
Volume
(gal)
Coil Volume
Solar/Boiler
(gal)
Coil Surface
Area
Solar/Boiler
(ft 2 )
Coil Friction
Loss*
Solar/Boiler
(ft of head)
First Hour
Rating (gal)
Recovery
Rate Solar
& Backup
#
(gal/hr)
Standby
Loss
Rating
(°F/hr)
NAS20053 45 2.30/ - 11.78/ - 0.50/- 91 51 1.1
NAS20083 75 2.76/ - 14.14/ - 0.60/- 126 56 0.8
NAS20123 110 2.76/ - 14.14/ - 0.60/- 158 56 1.2
NAS20082 73 2.76/1.84 14.14/9.42 0.60/0.40 226 158 0.8
NAS20122 108 2.76/1.84 14.14/9.42 0.60/0.40 258 158 1.2
NOTES:
* Based on 5 GPM flow rate.
#
Based on solar input of 140ºF @ 2 GPM. Depending on model, backup heat recovery is calculated with either a 4500W heating element or a
boiler with output of 180ºF at 14 GPM. Potable water temperature rise is 77ºF.
Table 2:
Capacity & Performance
SECTION II: GENERAL INFORMATION
WATER TREATMENT/FILTRATION
In areas where poor water conditions are suspected (i.e. lime, iron, and other minerals), it is
essential that the water be tested and appropriate action taken to prevent damage to the
indirect heater and ensure the quality of the water.