Carrier AQUAZONE 50PSH, Инструкция по установке, запуску и обслуживанию

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Fig. 6 — Mounting Brackets
3. Install rubber grommet on the bracket as shown in Fig. 7.
4. Hang the unit and assemble the field-provided threaded rod,
nuts, and washers on the brackets as shown in Fig. 7.
Fig. 7 — Hanging the Unit
Horizontal units installed above the ceiling must conform to all lo -
cal codes. An auxiliary drain pan if required by code, should be at
least 4 in. larger than the bottom of the heat pump.
Plumbing connected to the heat pump must not come in direct
contact with joists, trusses, walls, etc. Some applications require
an attic floor installation of the horizontal unit. In this case the unit
should be set in a full size secondary drain pan on top of a vibra -
tion absorbing mesh.
The secondary drain pan prevents possible condensate overflow or
water leakage damage to the ceiling. The secondary drain pan is
usually placed on a plywood base isolated from the ceiling joists
by additional layers of vibration absorbing mesh. In both cases, a
3/4 in. drain connected to this secondary pan should be run to an
eave at a location that will be noticeable.
Step 5 — Check Duct System
A supply air outlet collar and return air duct flange are provided
on all units to facilitate duct connections. A flexible connector is
recommended for supply and return air duct connections on metal
duct systems. All metal ducting should be insulated with a mini -
mum of 1 in. duct insulation to avoid heat loss or gain and prevent
condensate forming during the cooling operation. Application of
the unit to uninsulated duct work is not recommended as the unit’s
performance will be adversely affected. Do not connect ducts di -
rectly to the blower outlet; factory supplied duct collars should be
used for the connection to minimize unit vibration and noise trans -
mission to the ductwork and ultimately into the conditioned space.
The factory-provided air filter must be removed when using a fil -
ter back return air grill. The factory filter should be left in place on
a free return system.
If the unit will be installed in a new installation which includes
new duct work, the installation should be designed using current
ASHRAE (American Society of Heating, Refrigerating, and Air-
Conditioning Engineers) procedures for duct sizing. If the unit is
to be connected to existing ductwork, a check should be made to
assure that the duct system has the capacity to handle the air re -
quired for the unit application. If the duct system is too small, larg -
er ductwork should be installed. Check for existing leaks and re -
pair as necessary to ensure a tight air seal within the duct. The duct
system and all diffusers should be sized to handle the designed air
flow quietly. To maximize sound attenuation of the unit blower,
the supply and return air plenums should be insulated. There
should be no direct straight air path through the return air grille
into the heat pump. The return air inlet to the heat pump must have
at least one 90 degree turn away from the space return air grille. If
air noise or excessive air flow are a problem, the blower speed can
be changed to a lower speed to reduce air flow. (Refer to CFM
motor speeds and settings in the blower performance tables start -
ing on page 43.)
HORIZONTAL SUPPLY AIR CONFIGURATION CONVER -
SION
The supply air location on horizontal units can be quickly field
converted from end blow to straight through or vice-versa. To con-
vert the supply air direction, follow the steps below:
1. If connected to power, shut off the unit and disconnect switch
or circuit breaker.
2. Unscrew and remove the blower access panel.
3. Disconnect the wires from the unit electrical box to the
blower motor. Note which speed taps are wired for units
with PSC or constant torque motors.
4. Unscrew and carefully remove the blower panel with the
blower and motor attached. Be careful not to damage the
refrigerant coils or any other internal unit components.
5. Remove the blower support brackets from the bottom of the
blower housing and relocate them to the top of the blower
housing.
6. Turn the blower panel 180 degrees so that the blower sup -
port brackets are now at the bottom of the blower.
7. Insert the blower panel with the blower and motor into the
desired location. Be careful not to damage the refrigerant
coils or any other internal unit components. Screw the panel
into place.
8. Replace the wires between the blower motor and electrical
box. Make sure to connect wires to the proper speed taps.
9. Replace the blower access panel.
10. Reconnect power to the unit.
Step 6 — Install Condensate Drain
All units include a condensate drain pan under the evaporator
coil. A drain line must be connected to the heat pump and pitched
away from the unit a minimum of 1⁄8 in. per foot to allow the con -
densate to flow away from the unit.
IMPORTANT: Units larger than six tons include an integral an -
gle iron frame with mounting holes present.
CAUTION
If the unit is located in a crawl space, the bottom of the unit
must be at least 4-in. above grade to prevent flooding of the
electrical parts due to heavy rains.
WARNING
Always disconnect power to the unit before changing motor
speed to prevent damage to the motor, injury or death due to
electrical shock.