Techtanium MP 20, Инструкция по установке и эксплуатации

Страница: 11 / 20

Water temperature over 125ºF
can cause severe burns instantly or
death from scalds.
Children, disabled and elderly are at
highest risk of being scalded.
See instruc
�
on manual before se
�
ng
temperature at water heater.
Feel water before
bathing or showering.
Temperature limi
�
ng valves are
available, see manual.
All wiring must be done in accordance with Na
‐
�
onal, State and local codes. Adhere to the Na
‐
�
onal Electric Code
‐
ANSI/NFPA 70
‐
1990 in the
absence of any other codes.
Power must be shut o
ff
before installing or servic
‐
ing the heater. A separate shut o
ff
switch should
be installed to support future servicing or an
emergency shutdown. The en
�
re hea
�
ng system
should have its own designated electrical circuit.
The Techtanium heater operates in much the
same way as an addi
�
onal hea
�
ng zone, either
u
�
lizing the same circulator as household hea
�
ng
or its own circulator. The heater temperature is
maintained by the use of an immersion type aq
‐
uastat. The aquastat is installed into the im
‐
mersion well on the heater.
The aquastat operates in much the same way as a
thermostat. When the temperature falls inside
the tank the set of contacts make (close) and
when the temperature rises the contacts break
(open).
The aquastat should be
�
ed into the boiler sys
‐
tem and controls. When the tank calls for heat the
aquastat contacts close and signal the boiler con
‐
trols, allowing the boiler to maintain temperature
and proper opera
�
on of the tank circulator.
DHT recommends the use of a priority control to
help the boiler maintain desired temperature and
sa
�
sfy the tank's BTU requirements.
The Techtanium heater recovery ra
�
ngs are based
on the boiler's ability to maintain 180 degrees
Fahrenheit. It is important that the installer,
plumber or hea
�
ng technician responsible for
installing the heater, make certain that the
boiler capacity (BTU) is adequate to sa
�
sfy the
heater's BTU requirements.
11
V Wiring