Trane GECA, Установка, эксплуатация и обслуживание

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WSHP-PRC004-EN
Accessories Options
Accessory Items
Water Regulating Valve Assembly
The water regulating valve assembly
consists of a direct acting valve and a
reverse acting valve installed on the
water-out side of the unit. The direct
acting valve opens in response to an
increase in discharge pressure during
the cooling cycle. The reverse acting
valve opens in response to a decrease in
suction pressure during the heating
cycle. Water regulating valves should be
used where low flow, and low or high
fluid temperature conditions could occur.
This option is beneficial with open loop
systems, but not necessary.
See Figure
A-1 for water regulating valve assembly.
Motorized Water Valve for Open-Loop
Systems
The motorized water valve is installed on
the return line of the system between the
loop and the loop pump module. This
isolation device is less expensive and a
very effective alternative to the water
regulating valve.
When the compressor begins running,
the valve will open, allowing water to
flow through the unit. As the compressor
shuts down, the valve slowly closes off.
The main purpose of the motorized
valve is to shut off the flow of water
through the unit when the unit is off,
thus reducing water consumption. The
motorized valve must be fast opening to
prevent compressor trip-out, and slow
closing to prevent water-hammer.
Pump Module
The pump module and the hose kit make
a complete self-contained pumping
package for distributed pumping system.
These kits contain all the necessary
components for the installation,
operation and maintenance of the water
circuit of a closed loop geothermal
application. Standard pump module
features include insulated Grundfos
pumps, insulated cabinet, bronze pump,
and 3-way brass valves. The module is
factory piped, wired, and mounted.
See
Figure A-2 for pump module assembly.
Literature number WSHPC-IN-5 (72-
9006-03) will provide electrical and
dimensional requirements for the PMCA
and PMBA products.
Hose Kits
The basic hose kit consists of a stainless
steel outer braid with an inner core or
tube made of a non-toxic synthetic
polymer. The couplings are designed
with solid male pipe thread at one end,
and a ground-joint cone seat swivel
female with a male adapter at the
opposite end. The hoses are suitable for
water temperatures ranging between
33 F and 211 F [.55 C and 99.4 C] without
the use of glycol.
Additional options can be provided to
accompany the hose kit design. These
kits consist of a manual shut off/
balancing device on the supply and
return, or a self balancing device. The
specialized hose kits can be ordered with
or without a strainer.
See Figure A-3 for
the WSHP hose kit.
Figure A-2 – Pump Module Assembly
Figure A-1 – Water Regulating Valve
Assembly
See WSHP-SVX01A-EN for more
detailed specifications on hose kit
options. Hose kit options include:
•
Circuit setter hose kit
•
Manual balancing hose kit
•
Automatic self-balancing hose kit
Figure A-3 – WSHP Hose Kit