Techtanium MP 20, Installation And Operation Instructions Manual

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II PRODUCT SELECTION/
PERFORMANCE
1. The following guidelines apply to residential systems only. For commercial or institutional installations contact
the factory directly for assistance.
2. Determine the quantity of domestic hot water required. Factors to consider:
a. Estimate typical peak hour demand. Determine the general time of day (morning, noon, evening) when the
most hot water is used. Use chart below to determine potential maximum usage.
Estimate of Peak Domestic Hot Water Usage
Average Gallons of
Use Hot Water per Usage
Shower 20
Bath 20
Shaving 2
Hands and Face Washing 4
Hair Shampoo 4
Hand Dish Washing 4
Automatic Dish Washing 14
Food Preparation 5
Wringer Clothes Washer 26
Automatic Clothes Washer 32
Times Used During
One Hour
x
x
x
x
x
x
x
x
x
x
Times Used During
One Hour
= x
= x
= x
= x
= x
= x
= x
= x
= x
= x
Total Peak Hour Demand =
b. Estimate unusual peak draw demand. Whirlpool baths, hot tubs, and multiple head showers require large
quantities of hot water in a short period of time. Contact fixture manufacturer for quantity of water required.
Generally speaking, these circumstances can only be met with larger storage volumes.
c. Domestic Water Temperature. Most residential usage will be satisfied with 119ºF water, the temperature
setting recommended by the Consumer Product Safety Commission. Some applications s u c h as laundry and
dishwashers may require a higher temperature.
Ratings can be improved by increasing Techtanium thermostat setting and using a mixing valve to temper the
hot water to the proper temperature. When temperatures greater than 119ºF are required, use a mixing valve at
the outlet of the water heater or anti-scald fittings at point of use.
III Specifications and Performance
MP Model
Units 20 32 40 50
Tank Capacity Gallons 21.2 31.7 42.3 52.9
Minimum Recommend Power Btu/Hr. 75,000 95,000 115,000 140,000
Maximum Working Pressure P.S.I. 150 150 150 150
Maximum Temperature Degrees F 194 194 194 194
Weight (empty) Pounds 74.8 99 112.2 136.4
Weight (full) Pounds 251.4 363.1 464.6 577
II Product Selection
3