Mars Century EarthPure HNW Series, Инструкция по установке, эксплуатации и обслуживанию

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Installation, Operation & Maintenance - HNW Series
Hot Water Generator
Installation
The HWG has two temperature sensors factory
connected to HWG circuit board at PI. NEVER
DISCONNECT, RELOCATE OR REMOVE SENSORS!
HWT is located on the HWG heat exchanger “Water
In” line. If the HWG is connected incorrectly or if
circulation is reversed, the HWG will not operate.
Full load conditions could drive hot water tank
temperatures far above safe temperature levels if the
sensors have been disconnected or removed.
The heat pump, water piping, pump, and hot water
tank must be located where the ambient temperature
is not subject to freezing. Keep water piping lengths
at a minimum. DO NOT use a one way length greater
than 50 ft. [15 m].
All installations must be in accordance with local
codes. The installer is responsible for knowing the
local requirements, and for performing the installation
accordingly. DO NOT connect the pump wiring until
“Initial Start-Up” section, below. Powering the pump
before all installation steps are completed may
damage the pump.
Water Tank Preparation
1. Turn off power or fuel supply to the hot water tank.
2. Connect hose to the drain valve on the water tank.
3. Shut off the cold water supply to the water tank.
4. Open the drain valve and open the pressure relief
valve or a hot water faucet to drain tank.
5. When using an existing tank, it should be flushed
with cold water after it is drained until the
water leaving the drain hose is clear and free
of sediment.
6. Close all valves and remove the drain hose.
7. Install HWG water piping.
HWG Water Piping
1. Using at least 5/8” O.D. copper, route and install
the water piping, valves and air vent as shown in
Figures 3 or 4. An appropriate method must be
employed to purge air from the HWG piping. This
may be accomplished by flushing water through
the HWG (as In Figures 3 or 4).
2. Insulate all HWG water piping with no less than
3/8” [10mm] wall closed cell insulation.
3. Open both shut off valves and make sure the tank
drain valve is closed.
Water Tank Refill
1. Close valve #4. Ensure that the HWG valves
(valves #2 and #3) are open. Open the cold water
supply (valve #1) to fill the tank through the HWG
piping. This will purge air from the HWG piping.
2. Open a hot water faucet to vent air from the
system until water flows from faucet; turn off
faucet. Open valve #4.
3. Depress the hot water tank pressure relief valve
handle to ensure that there is no air remaining
in the tank.
4. Inspect all work for leaks.
5. Before restoring power or fuel supply to the water
heater, adjust the temperature setting on the tank
thermostat(s) to insure maximum utilization of
the heat available from the refrigeration system
and conserve the most energy. On tanks with
both upper and lower elements and thermostats,
the lower element should be turned down to
100°F [38°C] or the lowest setting; the upper
element should be adjusted to 120-130°F [49-
54°C]. Depending upon the specific needs
of the customer, you may want to adjust the
upper element differently. On tanks with a single
thermostat, a preheat tank should be used (Fig 4).
6. Replace access cover(s) and restore power or
fuel supply.
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CAUTION!
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CAUTION! Use only copper piping for HWG piping due to
the potential of high water temperatures for water that has
been in the HWG heat exchanger during periods of no-flow
conditions (HWG pump not energized). Piping other than
copper may rupture due to high water temperature and
potable water pressure.
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