18-BC55D1-2
Pumps
4TWX6
ALL phases
of this installation
must
comply
with
NATIONAL,
STATE AND LOCAL
CODES
IMPORTANT
-- This Document
is customer
property
and is to remain
with this unit.
Please
return
to service information
pack upon completion
of work.
These
instructions
do not cover
all variations
in
systems
nor provide
for every
possible
contingency
to
be met in connection
with
installation.
All phases
of
this installation
must
comply
with
NATIONAL,
STATE
AND LOCAL
CODES.
Should further
information
be
desired or should particular
problems
arise which are not
covered sufficiently
for the purchaser's
purposes,
the matter
should be referred
to your installing
dealer or local distributor.
A. GENERAL
The following instructions
cover 4TWX6 Heat Pump Units.
NOTICE:
These outdoor
units may be used with indoor units
equipped
with Thermostatic
Expansion
Valve only.
UNiT CONTAINS R-410A REFRIGERANT!
R-410A
OPERATING
PRESSURE
EXCEEDS
THE
LiMiT
OF R-22. PROPER
SERVICE
EQUIPMENT
IS
REQUIRED.
FAILURE
TO USE PROPER
SERVICE
TOOLS
MAY RESULT
IN EQUIPMENT
DAMAGE
OR
PERSONAL
iNJURY.
SERVICE
USE ONLY R-410A
REFRIGERANT
AND
APPROVED
POE COMPRESSOR
OiL.
5 FT. ABOVE
UNIT=UNRESTRICTED
These units use R-410A refrigerant
which operates at 50 to
70% higher pressures than R-22. Use only R-410A approved
service equipment.
Refrigerant cylinders are painted a "Rose"
color to indicate the type of refrigerant
and may contain a
"dip" tube to allow for charging of liquid refrigerant
into the
system. All R-410A systems use a POE oil that readily absorbs
moisture from the atmosphere.
To limit this "hygroscopic"
action, the system should
remain sealed whenever pos-
sible. Never break a vacuum with air and alwa_Ls change the
driers when opening the system for component
replacement.
Check for transportation
damage
after unit is uncrated.
Report promptly,
to the carrier,
any damage
found to the unit.
To determine
the electrical
power requirements
of the unit,
refer to the nameplate
of the unit. The electrical
power
available
must agree with that listed on the nameplate.
The Weathertron
®Heat Pump has been designed
and
manufactured
to withstand
and operate
in severe winter
conditions.
However,
there are precautionary
steps which
should be taken at the time of installation
which will help
assure the efficient operation
of the unit. It is recom-
mended
that
these
precautions
be taken
for units
being
installed
in areas
where
snow
accumulation
and
prolonged
below
freezing
temperatures
occur.
1,
Units should
be elevated 3 to 12 inches above the pad or
rooftop, depending
on local weather.
This additional
height will allow better drainage
of snow and ice (melted
during
defrost cycle) prior to its refreezing.
This should
prevent
a build-up
of ice around
the unit which occurs
when unit is not elevated.
Insure
that
drain
holes
in
©
2,
3,
unit
base pan
are not obstructed
preventing
draining
of defrost
water.
If possible,
avoid locations
that are likely to accumulate
snow drifts. If not possible,
a snow drift barrier
should be
installed
around
the unit to prevent
a build-up
of snow
on the sides of the unit and should be of sufficient
distance
from the unit to prevent
restriction
of airflow to
and from the unit. Also allow for proper maintenance
space. The barrier
should be constructed
of materials
which will blend in with the building
design.
Avoid locating
the unit where
condensation
and freezing
of defrost vapor may annoy the customer.
For instance,