AirTap ATI50, Техническое руководство

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FAQS
A. PERFORMANCE / GENERAL
1. How efficient is the unit? How does it compare to gas, electric or tankless water heaters?
The Energy Factor rating on the unit is 2.35 (in Auto or hybrid mode). Electric, gas and tankless water heaters have an
Energy Factor of less than 1.
2. What is the payback on the unit?
Payback is dependent on a number of factors such as hot water usage, operating environment (including ambient
temperature), local electricity tariffs, availability of rebate or incentive programs, etc. This unit could save on average
$300 yearly compared to standard electric water heater. This does not factor additional savings if the cool exhaust air
is ducted to supplement home cooling during warmer months.
3. What is the hot water delivery rate?
The First Hour Rating on the 66 gallon unit is 75 gallons (in Auto or hybrid mode).
4. What is the ambient temperature operating range for the unit? Can I adjust the range?
The default setting for the ambient temperature operating range is 32 – 110’F. You can change the range by accessing
parameters F13 (maximum ambient temp for heat pump operation) and F14 (minimum ambient temp for heat pump
operation).
5. What is the heat loss rate or thermal efficiency of the unit?
The insulation rating on the unit is amongst the best in the industry. A unit starting with 130’F water will lose less than
10’F over a 24-hour period. In BTU terms, the heat loss for ATI 66 is approx. 3.4 Btu/hr-F
6. What are the recommended settings (mode, water set temperature and kick-in differential)? Should I switch the
mode based on seasonal changes or if hot water demand is higher than usual?
Settings are determined by hot water consumption patterns. It is recommended that users start with lower water temp
setting (120-125’F) and higher kick-in differential (20’F). For households with high hot water demand, the water temp
setting maybe increased to 130’F and kick-in differential reduced to 10’F. Recommended mode is Auto (hybrid). If you
are running the unit in Econ mode (heat pump only) during summers and notice a drop in hot water delivery in winter,
switch the unit to Auto mode.
7. How many amperes does the unit draw in each mode?
Heat pump amperage varies with ambient and water temperatures. Indicative amperage for each mode is as follow:
1. Econ mode: 4-5
2. Auto mode: 22-23
3. Heater mode: 17-18
8. What is the exhaust air flow rate (CFM)? Can I lower the air flow rate?
The exhaust air flow is approx. 250 CFM. Starting with version 2.01, you can lower the airflow to approx. 200 CFM by
setting parameter F41 to 1.
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