Maritime Geothermal ATF-45, Installation And Service Manual

Page: 10 / 110

Page 10 002000MAN-01 1-Jun-2018
The heat pump can be ordered as a left or right hand re-
turn from the factory. This must be specified at time of order as
the physical construction of the two configurations is different.
Outdoor Unit Placement
The ACE unit must be placed outdoors, with the fan point-
ing away from the building. It should be at least 12 inches (30
cm) away from the building or other obstructions on the
back and sides for unimpeded return airflow. There should be
little or no obstruction in the fan (front) direction for at least 30
feet (9 m) , otherwise airflow and therefore overall perfor-
mance will be reduced.
In addition, there should be at least two feet (0.6 m) of
clearance on the electrical box and refrigeration piping side of
the unit to facilitate servicing and general maintenance.
The ACE must be bolted down to prevent a tipping hazard.
Leg Kit Installation
Indoor Unit Blower Outlet Orientation
The indoor units has a field configurable blower position.
Its default location from the factory is in the top of the unit,
providing a “ninety” in the airflow. It can easily be placed in the
side of the unit for straight through airflow. Note that if this is
done, plenum heater will need to be placed in ductwork outside
unit.
To switch the location of the fan outlet:
1. Turn the power of to the unit.
2. Remove the screw that holds the side access panel in
place and remove the access panel by pulling up on
the handle and then outward from the bottom.
3. Disconnect the two wire harnesses and ground wire
from the fan motor.
4. Repeat step 2 for the access panel with the fan
mounted in it. Set the assembly on the floor.
5. Disconnect the plenum heater extension from the fan
housing and from the access panel.
6. Mount the fan housing directly to the access panel.
7. Install the fan/panel in the new location and secure
with the screw.
8. Reconnect both harnesses and ground wire.
9. Install the remaining access panel and secure with the
remaining screw.
Outdoor Unit Mounting Height
The outdoor unit must remain clear of snow and ice at all
times. Good performance depends on good airflow, which of
course cannot be achieved if the unit is buried in the snow.
To this end, several strategies may be employed. First,
look up how much snowfall is expected in your area, either from
local knowledge or weather data. The snowfall map included on
next page can be used as a rough guide for Canada.
1. If the local climate has less than ~4” of snow accumu-
lation, the unit can be mounted directly on a concrete
pad. In this case, care must be taken to ensure re-
frozen condensate does not build up under unit.
2. The unit can be mounted on angle brackets attached
to the side of a building. Be sure to adhere to the
minimum clearance requirement of 12” (30 cm), and
use brackets designed for twice the unit weight.
3. Two different leg kits which add either 15” (38 cm) or
30” (76 cm) of additional height are available as an
accessory from Maritime Geothermal Ltd.
To attach the legs, first remove the three bolts with flat
washers that hold each foot plate in place. Leaving the foot
plate in place on the inside of the cabinet panel, slide the leg
over the outside of the panel and re-install the three bolts and
flat washers.
Whether or not a foot kit is used, be sure to mount the unit
using the 4 rubber grommets included with the unit, to dampen
any vibration. The unit must be fastened to its mounting surface
with four min. 5/16” bolts through these grommets to pre-
vent a tipping hazard due to impact or high wind.
IMPORTANT NOTE: The line set between the
indoor and outdoor units must not exceed 70
ft (21 m) in length.
Outdoor Unit
Fan Orientation
Top Discharge
(Internal Ple-
num Heater)
Side Discharge
(External Ple-
num Heater)