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  Cost Comparison
 
 
   
Other Water Heater
 
Zero E Water Heater 9000 Btu
  Current SP Electrical Consumption (per KWh)
 
  Number of Persons in the family used hot water
 
  Each person estimated time spend or usage in bathroom (Minutes)
 
  number of Times in a day of a person to bath in shower/ longbath (times)
 
  Total usage in a day (Minutes)
450 
 
120 
  Amounts in a month S$
233 
 
0 ~ 14 
  Amounts in a year S$
2795 
 
0 ~ 173 
   Electricity rate: Domestic tariff as at 1 Oct 2008 = S$0.345/kWh
   
  Hot Water Temperature
   
 
Water flow (L/hr)
9000Btu compressor
12000Btu compressor
18000Btu compressor
130
38-40ºC
43-45ºC
48-50ºC
190
36-37ºC
39-41ºC
44-46ºC
260
 
36-38ºC
42-43ºC
300
 
35-37ºC
41-42ºC
   
 
  Specification
   
 
 
Model
HWG-91218T
HWG-91218B
  Heating Capacity
9000Btu to 18000Btu
9000Btu to 24000Btu
  Input Power
0
0
  Refrigerant
R12; R22; R407C; R410a
  Water pressure (Max)
400Psi (2758KPa)
  Refrigerant pressure (Max)
500Psi (3445KPa)
  Hot Water rate at 15ºC Temp. rising
100~200L/hr
  Net Dimensions
365 x 266 x 140
  Packing Dimensions
430 x 276 x 150
  Net / Gross weight (Kg)
6 / 6.3
6.2 / 6.5
  Water connection
15mm copper tube
  Refrigerant connection
3/8' copper tube
  Water source
Fresh water
Sea water & Fresh water