T Therm Geo TST-***, Инструкция по установке и эксплуатации

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12/03/2012
17 GI301
Figure 7 – Desuperheater Piping, preheat Tank
This is the most effective and efficient arrangement
for high hot water needs. This is also the
recommended method when using a gas water
heater with a desuperheater. The preheat tank need
not be as big as the standard water heater; 40-
gallon size can be very effective. With this two
tank system the desuperheater will always act as a
city/well water
pre-heater
and the standard water
heater (electric elements or gas) only requires
tempering energy which is a very small percentage
of domestic water heater energy required.
Figure 7
Figure 7A – Desuperheater, Single Tank Concept
The water flow is from the top tee, through the desuperheater,
pushing the heated water into the water heater bottom.
The ball valve at the water heater bottom (between drain valve
and tank) is to allow shut-off and an easy method of purging
the desuperheater piping with city/well water forcing through
the system and out the hose bib drain.
Note:
Both ball valves
must be open whenever the desuperheater electrical source
power wire is plugged into the SWH tab at the control box,
upper right, relay board.
Inspect the dip tube in the water heater cold inlet for a check
valve. If a check valve is present it must be removed or damage
to the desuperheater circulator will occur.
Before restoring electrical supply to the water heater, adjust the
temperature setting on the tank.

On tanks with both upper and lower elements, the
lower element should be turned down to the lowest
setting, approximately 100° F (38° C). The upper
element should be adjusted to 120° F (49° C) to
130° F (54° C). Depending upon the specific needs
of the customer, you may want to adjust the upper
element differently.
 On tanks with a single element, lower the
thermostat setting to 120° F (49° C).
CAUTION
Do not run desuperheater pump without supply from water heater. This will damage the pump.
Figure 7A