High Efficiency Vertical Stack Water-Source Comfort System

Accessories

Hose Kits Tracer Loop Controller The Tracer loop control panel has the
Trane provides two hose kit selections Trane’s Tracer Loop Controller (TLC) is ability to lower or raise the water loop
for equipment balancing. a cost effective way of controlling the temperature during low energy use
WSHP equipment, as well as the me- hours (typically during the night time
• Manual ball valve chanical components of the system. hours) to provide a greater optimiza-
(ordered with unit) Fluid coolers, boilers, pumps and wa- tion during the time of day where en-
ter-source heat pump units can be ergy consumption may be at it’s
• Manual ball valve with P/T ports connected and controlled by the loop greatest. Using the loop controller as a
(ordered with unit) controller for total system optimiza- means of coordinating cooling or
tion. See Figure 11. heating storage, the building owner
Each selection provides some accura- can expect better efficiencies from the
cy in equipment balancing. Range of Figure 11: Tracer loop control panel WSHP equipment.
accuracy consist of ±25% for the man-
ual ball valve method flow control
method.

Utilizing the manual ball valve meth-
od, the pressure/temperature (P/T
ports) on the leaving and entering side
of the heat pump is measured to deter-
mine flow. The ball valve is then throt-
tled to change the amount of flow to
the unit to reach the desired tempera-
ture or pressure differential.

WSHP-PRC013-EN 51

Mechanical
Specifications

General around the compressor enclosure to Water-to-Refrigerant
Equipment is completely assembled, achieve greater acoustical reductions. Heat Exchanger
piped, internally wired and test operat- The water-to-refrigerant heat ex-
ed at the factory. Filters changer is of a high quality co-axial
The equipment contains an ETL listing One inch, throwaway filters are stan- coil for maximum heat transfer. The
and label prior to leaving the factory. dard and factory installed. The filters copper or optional cupro-nickel coil is
Canadian units are CETL certified. Ser- have an average resistance of 76-per- deeply fluted to enhance heat transfer
vice and caution area labels are placed cent and dust holding capacity of 26- and minimize fouling and scaling. The
on the unit in their appropriate loca- grams per square foot. coil has a working pressure of 400 psig
tions. on both the refrigerant and water
Compressors sides.
Casing All units have direct-drive, hermetic,
The cabinet assembly is constructed rotary (unit sizes 009-018) and recipro- Indoor Fan
of heavy-gauge galvanized steel. It cating (unit sizes 024 and 036) type The blower is a double width, double
houses the blower, fan and control compressors. The compressor con- inlet (DWDI) forward curved wheel
hook-up to the unit thermostat. A tains rubber isolation to aid in noise supported by a PSC fractional horse-
basepan with condensate hose is in- reduction during compressor start/ power motor. The blower/motor as-
cluded with the cabinet design. Base stop. sembly is designed for efficient and
rails allow ease of chassis installation/ quiet operation. The motor is multiple
removal for service or maintenance. Internal thermal overload protection speed, and wired for a HIGH or LOW
and compressor anti-short cycle tim- setting. Service or maintenance to the
The chassis is constructed of heavy- ers are also provided. Protection blower/motor is easily achieved by re-
gauge galvanized steel. The chassis against excessive discharge pressure moval of a single bracket.
houses the compressor, reversing is provided by means of a high pres-
valve, water-to-refrigerant heat ex- sure switch. Loss of charge protection Risers
changer, air-to-refrigerant heat ex- is provided by a low temperature sen- Factory supply, return, and drain risers
changer, thermal expansion valve, sor. are a Type L or M copper. Swages
corrosive resistant condensate pan, from one diameter to another are per-
and water inlet/outlet connections. Refrigerant Circuits formed as specified by the engineer in
The chassis is installed into the cabinet The refrigerant circuit contains a ther- the field. Diameters and length are
by sliding it in place on the locating mal expansion device, service pres- specified by the equipment model
rails within the cabinet design. sure ports, and system safety devices number. Riser insulation (optional)
factory-installed as standard. contains a flame rating per UL94-5V
The insulation contains a flame spread with flame spread rate of no more than
rating of less than 25 and smoke den- Air-to-Refrigerant Coil 25.
sity rating of less than 50 (as tested in Internally finned, 3/8-inch copper
accordance with ASTM-85). The elas- tubes mechanically bonded to a con- Controls
tomeric insulation has a UL 94-5V rat- figured aluminum plate fin are stan- The unit control box contains all nec-
ing. All insulation edges are either dard. Coils are leak tested at the essary devices to allow heating and
captured or sealed. factory to ensure the pressure integri- cooling operation to occur from a unit
ty. The coil is leak tested to 200 psig mounted, plug-in thermostat or sen-
Sound Attenuation and pressure tested to 450 psig. sor. The devices are as follows:
Sound attenuation is applied as a stan-
dard feature in the product design. The Drain Pan • 24 VAC energy limiting class II 75
enhanced reduction package includes The condensate pan is constructed of VA breaker type transformer. The
a heavy gage base plate, and gasket/ corrosive resistant material. The bot- retrofit unit for WPRD contains a
insulation around the compressor en- tom of the drain pan is sloped in two 50 VA transformer
closure. planes to pitch the condensate to-
wards the drain connection. Conden- • 24 VAC blower motor relay
An optional deluxe sound reduction sate is piped to a lower base pan
package is also available. It includes a through condensate hose for ease of • 24 VAC compressor contactor for
heavy gage base plate, gasket and in- chassis removal. A clear drain hose is compressor control
sulation around the compressor enclo- factory clamped onto the drain con-
sure, and vibration isolation between nection for field hook-up.
the chassis and cabinet. An additional
dampening treatment is applied

52 WSHP-PRC013-EN

Mechanical
Specifications

• Lockout relay which controls cy- Deluxe Controls (option) Return-Air Hinged
cling of the compressor is provid- The deluxe control package provides a Acoustical Door (option)
ed to protect the compressor 75 VA transformer with circuit breaker. A frame mounted acoustical door is
during adverse operating condi- The controller is a micro-processor provided to attenuate noise. The door
tions. The device may be reset by based controller designed to include a is hinged to the wall frame, and con-
interrupting the 24 VAC control cir- lockout relay, anti-short cycle com- tains magnetic latches to keep the
cuit. Reset may be done either at pressor protection, random start de- door aesthetically in place. It is flush
the thermostat or by momentary lay, brown-out protection, low mounted to the wall as to not protrude
main power interruption. pressure time delay, compressor de- into the owner space. The door allows
lay on start and an open relay for night access to the unit for ease of filter re-
• A high pressure switch protects the setback or pump request. Optional placement
compressor against operation at wiring from the factory for night set-
refrigerant system pressures ex- back, condensate overflow and com- The door is constructed from heavy-
ceeding 395 psig. pressor enable are also supplied. LEDs gauge formed galvanized steel and
(light emitting diodes) are included for painted Polar white. It is made avail-
• A low pressure temperature sensor diagnostics of the equipment. The de- able in a keylock design and a keyless
prevents the compressor opera- luxe controller accepts either a stan- design to fit several design applica-
tion at leaving water temperatures dard 24V digital or mercury tions.
below 20º F. thermostat.
Supply-Air Grilles (option)
• Factory installed wire harness is ZN510 Controller (option) Supply air grilles are available for air
available for the Deluxe and ZN510 This system utilizes factory furnished discharge from the unit. The grilles are
control packages. Basic controls and mounted DDC controls for opera- made in either a vertical louver, or a bi-
are provided for retrofit applica- tion on a COMM 5 (LonMark) link. The directional louver option. The grilles
tions. TracerTM ZN510 control package in- are painted the Polar White to match
cludes a 75 VA transformer. The con- the door assembly.
• Power connections are made troller provides random start delay,
through a factory installed conduit heating/cooling status, occupied/un- Ball Valves (option)
located at the top of the unit’s cab- occupied mode, fan status and filter Ball valves are field installed between
inet. An optional disconnect is pro- maintenance options. Optional wiring the riser stub out and the flexible hose.
vided. The conduit grants access from the factory for condensate over-
directly to the control box. flow is also available. Three LEDs Hoses (option)
(light emitting diodes) are included for Hoses consist of a stainless steel outer
Nameplate information is given for the diagnostics of the equipment. braid with an inner core of tube made
application of either time-delay fuses of a nontoxic synthetic polymer mate-
or HACR circuit breakers for branch rial. The hoses are suitable for water
circuit protection from the primary temperatures ranging between 33 F
source of power. and 211 F without the use of glycol.

Single phase, single voltage rated
equipment is designed to operate be-
tween plus or minus 10 percent of
nameplate utilization voltage.

Operation outside of this range may
adversely effect the service life of the
equipment.

WSHP-PRC013-EN 53

Mechanical
Specifications

Automatic Flow Devices The motorized isolation valve is facto- Warranty
(option-factory installed) ry installed. The motorized isolation The unit is warranted by the manufac-
The automatic balancing valve is fac- valve is of the low power type (6 VA), turer against defects for one year. The
tory-installed and set to a rated flow, with an opening time of 6 seconds, entire refrigerant circuit including mo-
and will automatically control the flow and a closing time of 4 to 5 seconds. tor-compressor, expansion device, all
to within 10% of the rated value over a The motorized head is removable from heat exchangers in contact with refrig-
40 to 1 differential pressure, operating the valve body and has a quick connect erants, and reversing valve (less sole-
range (2 to 80 PSID). Operational tem- wiring harness. The valve body is con- noid coil) are warranted for that year
perature is rated from fluid freezing, structed of hot forged brass UNS (parts only). Optional extended war-
to 225 degrees F. The valve body is C37700 per ASTM B-283, factory ranties are made available.
constructed from hot forged brass sweated into the pipe assembly. The
UNS C37700 per ASTM B-283 latest flow cartridge is made of stainless
revision. steel, polyphenylene sulfide polyphe-
nylene oxide and EPDM, suitable for
The strainer is factory installed. The use with hot and chilled water with up
Y-strainer body is constructed of to 50% Glycol, for operating tempera-
bronze with a brass cap. The cap tures of 34 to 203 degrees F. Valves are
issealed with a non-asbestos gasket. rated for 300 PSI operating pressure
The strainer body is suitable for 400 and a close off pressure of 60 PSI. Cv
PSIG, with a maximum pressure rat- ratings are 3.0 (1/2 inch), 4.0 (3/4 inch).
ing of 400, at 150°F WOG. Working
pressure rating is Class 125. The
strainer screen is 304 stainless steel
with 20-mesh.

54 WSHP-PRC013-EN

WSHP-PRC013-EN 55

Trane Literature Order Number WSHP-PRC013-EN
A business of American Standard Companies File Number PL-UN-000-WSHP-PRC013-0506 (electronic only)
www.trane.com Supersedes PL-UN-000-WSHP-PRC013-0206 (printed copy)
Stocking Location Inland for 0206 version
For more information, contact your local district
office or e-mail us at [email protected] Trane has a policy of continuous product and data improvement and reserves the right to change
design and specifications without notice.