ClimateMaster Tranquility TR Series, Инструкция по установке, эксплуатации и обслуживанию

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C L I M A T E M A S T E R W A T E R - S O U R C E H E A T P U M P S
Tr a n q u i l i t y
®
( T R ) S e r i e s
R e v. : N o v e m b e r 2 , 2 0 2 0
C l i m a t e M a s t e r Wa t e r - S o u r c e H e a t P u m p s
COAX
Note:
All components shown
are internal to the heat
pump unit.
(TO WATER LOOP)
(FROM WATER LOOP)
MODULATING
MIXING
VALVE
ENTERING
AIR
INTERNAL
PUMP
EVAPORATOR
COIL
LEAVING
AIR
REHEAT
COIL
REFRIGERANT OUT
(COOLING)
REFRIGERANT IN
(COOLING)
WATER IN
WATER OUT
The Loop Pump circulates condenser water through the
hydronic reheat coil during the reheat mode of operation.
In this application, the loop pump is only energized during
the reheat mode of operation. The Hydronic Coil is utilized
during the reheat mode of operation to reheat the air to
the setpoint of the proportional controller. Condenser
water is diverted by the motorized valve and pumped
through the hydronic coil by the loop pump in proportion
to the control setpoint. The amount of reheating is
dependent on the setpoint and how far from setpoint the
supply air temperature is. The factory setpoint is 70–75°F
[21-24°C], generally considered “neutral” air.
ClimaDry
®
Application Considerations
Unlike most hot gas reheat options, the ClimaDry
®
option
will operate over a wide range of EWTs. Special flow
regulation (water regulating valve) is not required for low
EWT conditions. However, below 55°F [13°C], supply
air temperatures may not be maintained at 72°F [22°C]
because the cooling capacity exceeds the reheat coil
capacity at low water temperatures. Below 55°F [13°C],
essentially all water is diverted to the reheat coil (no heat
of rejection to the building loop). Although the ClimaDry
®
option will work fine with low EWTs, overcooling of the
space may result with well water systems or on rare
occasions with ground loop (geothermal) systems (Note:
Extended range units are required for well water
and ground loop systems). Since dehumidification
is generally only required in cooling, most ground loop
systems will not experience overcooling of the supply air
temperature. If overcooling of the space is a concern (e.g.
computer room well water application), auxiliary heating
may be required to maintain space temperature when the
unit is operating in the dehumidification mode.
Unit minimum entering air temperature while in the
dehumidification, cooling, or continuous fan modes is
65ºF DB/55ºF WB . Operation below this minimum may
result in nuisance faults.
Water-Source Heat Pumps with ClimaDry
®
should not be
used as make-up air units. These applications should use
equipment specifically designed for makeup air.
Figure 23: ClimaDry
®
Schematic
ClimaDry
®
Modulating Reheat Option