8
Caution:
Inadequate water flow to heat exchanger due to
improper pipes, valves or pump is dangerous to heat pump
and constitutes abuse that will void the warranty of the
compressor and/or heat exchanger.
An in-line water screen strainer is always recommended but
it is imperative where poor water quality may exist. Ball
valves with hose connections are recommended for back-
flushing and chemical cleaning of the evaporator condenser.
Condensate Piping
A drain trap must be connected to the drain pan at the unit.
A condensate connection is provided on each side of the
unit. Condensate piping should be installed according to
local codes. The line should be one size larger than pipe size
as the drain nipple and should pitch downward toward the
building drain.
Do not over tighten the connect-
ions. The connection to the unit
needs to be hand tightened.
Connect drain line to the unit with a “P” trap to avoid pull-
ing air from outside the unit back through the drain line.
The line should be insulated where the ambient conditions
may cause a condensation on the surface of the pipe. An
additional drain pan may be installed under the unit, and
should include a separate drain line for overflow from the
primary drain. An air break should be used with long runs of
condensate lines.
Drain pans in any air conditioning equipment, even when
they have a built-in slope to the drain, will have moisture
present and will require periodic cleaning to prevent any
build-up of algae or bacteria. Cleaning of the drain pans will
also prevent any possible plugging of the drain lines, and
overflow of the pan itself. Some means to clean out the “P”
trap should be provided. Only qualified personnel should
clean drain pans, drain lines or the insides of equipment.
Electrical
WARNING!
All electrical works need to be performed by a licensed
electrician and according to all applicable codes.
Check the unit data plate to make sure it matches with the
power supply. Proper fuses or HACR circuit breakers
should be installed. See unit’s nameplate for minimum
amps and maximum fuse/breaker. Connect power to the
unit according to the wiring diagram provided with the
unit.
Use ONLY copper wires for
power lines.
The power and control wiring may be brought into unit
through the holes provided on the unit’s cabinet. Protect
the branch circuit in accordance with code requirements.
HPXVS control wires should not run with any other wires
inside same conduit.
The units must be electrically grounded in accordance with
all applicable codes.
Power can be applied to the unit after the control wiring is
connected, and start-up checks are complete.
Wall Thermostat / Handset
The low voltage wall thermostat / wired handset should be
located in the air conditioned space on an inside wall 4.5 to
5.5 feet above the floor where it will not be subjected to
drafts, sun exposure or heat from electrical fixtures or app-
liances. Control wire size must be large enough to prevent
excess voltage drop that may cause improper operation of
the equipment. Follow the manufacturer’s instructions en-
closed with thermostat for general installation procedure.
A
Miami Heat Pump’s
HPXVS model is furnished with its
own Wall Handset. For this unit four (4) telephone wires
are sufficient in size but in case of a unit replacement
installer may use existing wires. For a HPXVS unit, please
refer to the handset manual (control spec. for HPXVS unit)
supplied with the unit.
Filters
Slide correct filter in with arrow pointing towards the blo-
wer in the direction of airflow. Make sure filter(s) cover the
entire coil(s).
