Super Hot EPP SERIES, Инструкция по установке и обслуживанию

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EPP SERIES INDIRECT WATER HEATERS – Installation and Service Manual
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5.0 WATER ADJUSTMENT
DANGER: Water Temperatures over 125°F (52°C) can cause severe burns instantly or death from
scalds. Feel water before bathing and showering. Homes that have small children, elderly and disabled
persons may wish to lower the water heater setting to 120°F (49°C) to prevent potential scalding. Below is
a table showing the approximate time it takes to have a scalding accident for different temperatures of hot
water:
Water Temperature Length of Time to Cause Scalding
125ºF (52ºC) 1 1/2 to 2 minutes
130ºF (54ºC) about 30 seconds
135ºF (57ºC) about 10 seconds
140ºF (60ºC) less than 5 seconds
145ºF (63ºC) less than 3 seconds
150ºF (66ºC) about 1 1/2 seconds
Maximum boiler water temperature is 210ºF
You should install a mixing valve or tempering valve on the
domestic hot water supply and set to 120°F (49°C).
Valves for reducing point of use temperature by mixing cold and hot
water are available. Consult a licensed plumber or local plumbing
authority.
WARNING: Studies show that dangerous bacteria can form in domestic water distributions systems if a
minimum water temperature is not maintained. For example,
legionella pneumophila
, can form in hot water
maintained at 115°F (46°C) or lower. We recommend a domestic water temperature not lower than 122°F
(50°C) at faucets and a tank temperature not lower than 140°F (60°C) to limit the potential for
legionella
pneumophila
growth. Contact your local health authority for more information.
5.1 CONTROL/AQUASTAT
Insert the control into the factory installed stainless steel well and secure it to the well by using the screw
on the aquastat body. Thermal paste is recommended but not required.
The water temperature and the setting of the aquastat will be similar most of the time but due to unusual
usage patterns the outlet water temperature may rise significantly above the setting of the aquastat. To
control this fluctuating temperature, a thermostatic mixing valve (tempering valve) should be installed.
5.2 AQUASTAT TEMPERATURE
•
Use the aquastat to control the maximum water temperature in the tank. Its differential is fixed at
5ºF (3ºC). Its maximum setting is 160°F (71°C).
•
Household water usage patterns will affect water temperature at any faucet or shower. Always
check temperature at every point after adjusting aquastat.
•
When hot water is used in repeated small quantities the upper layer of water in tank can be much
hotter than lower layers. When adjusting the aquastat, be sure boiler limit control is set a minimum
20°F (11°C) higher. However, in no case should boiler limit control be set above 210°F (99°C).