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GENERAL
The 50PEC water source heat pump (WSHP) console unit is a de-
centralized room terminal designed for field connection to a
closed-circuit piping loop.
Units are typically installed in perimeter zones, usually under win-
dows. Supply air is discharged directly into the conditioned space
through discharge grilles located in the top of the unit.
INSTALLATION
Step 1 — Check Jobsite
Units are typically installed along an outside wall of the room. Re-
fer to Fig. 1 for an illustration showing piping locations. Install
units with adequate clearance to allow maintenance and servicing.
Refer to Table 1. Locate the console unit so that it provides ade-
quate air circulation throughout the room.
Installation, operation and maintenance instructions are provided
with each unit. Before unit start-up, read all manuals and become
familiar with the unit and its operation. Thoroughly check out the
system before operation. Complete the inspections and instruc-
tions listed below to prepare a unit for installation.
1. Compare the electrical data on the unit nameplate with order-
ing and shipping information to verify that the correct unit
has been shipped.
2. Keep both the chassis and cabinet covered with the shipping
carton until all plastering, painting, and finish work is com-
plete and it is time to install the chassis and cabinet.
3. Verify that the refrigerant tubing is free of kinks or dents, and
that it does not touch other unit components.
4. Inspect all electrical connections. Connections must be clean
and tight at the terminals.
Step 2 — Check Unit
Upon receipt of shipment at the jobsite, carefully check the
shipment against the bill of lading. Make sure all units have been
received. Inspect the carton or crating of each unit, and inspect
each unit for damage. Ensure the shipping company makes proper
notation of any shortages or damage on all copies of the freight
bill. Concealed damage not discovered during unloading must be
reported to the shipping company within 5 days of receipt of
shipment.
NOTE: It is the responsibility of the purchaser to file all necessary
claims with the shipping company.
STORAGE
Upon the arrival of equipment at the jobsite, immediately store
units in their shipping cartons in a clean, dry area.
UNIT PROTECTION
Cover console units on the jobsite with either shipping cartons,
vinyl film, or an equivalent protective covering. Cap the open ends
of pipes stored on the jobsite. In areas where painting, plastering,
or the spraying of fireproof material has not been completed, all
due precautions must be taken to avoid physical damage to the
units and contamination by foreign material. Physical damage and
contamination may prevent proper start-up and may result in
costly equipment clean-up.
Examine all pipes, fittings, and valves before installing any of the
system components. Remove any dirt found on these components.
CAUTION
DO NOT re-use compressor oil or any oil that has been ex-
posed to the atmosphere. Dispose of oil per local codes and
regulations. DO NOT leave refrigerant system open to air any
longer than the actual time required to service the equipment.
Seal circuits being serviced and charge with dry nitrogen to
prevent oil contamination when timely repairs cannot be com-
pleted. Failure to follow these procedures may result in dam-
age to equipment.
IMPORTANT: The installation of console water source heat
pump units and all associated components, parts, and accesso-
ries which make up the installation shall be in accordance with
the regulations of ALL authorities having jurisdiction and
MUST conform to all applicable codes. It is the responsibility
of the installing contractor to determine and comply with ALL
applicable codes and regulations.
CAUTION
To avoid equipment damage, do not use these units as a source
of heating or cooling during the construction process. The me-
chanical components and filters used in these units quickly be-
come clogged with construction dirt and debris which may
cause system damage.
CAUTION
To avoid the release of refrigerant into the atmosphere, the
refrigerant circuit of this unit must only be serviced by
technicians who meet local, regional, and national proficiency
requirements.
CAUTION
All refrigerant discharged from this unit must be recovered
without exception. Technicians must follow industry accepted
guidelines and all local, regional, and national statutes for the
recovery and disposal of refrigerants.
CAUTION
When a compressor is removed from this unit, system refriger-
ant circuit oil will remain in the compressor. To avoid leakage
of compressor oil, the refrigerant lines of the compressor must
be sealed after it is removed.
CAUTION
DO NOT store or install console units in corrosive environ-
ments or in locations subject to temperature or humidity ex-
tremes (e.g., attics, garages, rooftops, etc.). Corrosive condi-
tions and high temperature or humidity can significantly re-
duce performance, reliability, and service life. Always move
units in an upright position. Tilting units on their sides may
cause equipment damage.
CAUTION
DO NOT stack units. Take care when moving the unit. The
unit’s weight is located on the left (compressor) end. Always
store and move unit in an upright position. Take care to protect
the unit cabinet and sub-base when moving or storing. Never
move or lift unit by its water connections. Units must be
moved and stored in an upright position, never lay the unit on
it’s side.
CAUTION
When installing unit in cold air climates, an outside air damper
must be provided to prevent possible condenser freeze-up.
