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2005 Boreal Geothermal Inc.
www.boreal-geothermal.com
BOREAL
® ACDX Heat Pump
Installation Instructions
Unpacking
When the heat pump reaches it's destination it should be
unpacked to determine if any damage has occurred during
shipment. Any visible damage should be noted on the carrier's
freight bill and a suitable claim filed at once.
The heat pump is strongly constructed and every effort has
been made to insure that it will arrive intact, however, it is in
the customer's best interest to examine the unit thoroughly
when it arrives.
Optimum Placement
The BOREAL® heat pump has an air-filter rack which
can be removed for easy entry through a doorway or to facili-
tate moving the unit with a furniture cart. Simply remove the
two screws which hold the end cap in place, slide the cap off
and push the rack back off it's rails. When the heat pump is in
place the filter rack can be reinstalled with the removable end
(where the filter is removed) facing the direction that allows
easiest access for changing the filter.
To achieve the greatest efficiency, the heat pump should be
centrally located in the home with respect to the conditioned
space. This design provides the utmost in economy and com-
fort and usually can be accomplished in harmony with the
design of the home. A heating system cannot be expected to
produce an even warmth throughout the household when it is
located at one end of the structure and the warm air is trans-
mitted with uninsulated metal ductwork.
If possible the three main service doors should remain
clear of obstruction for a distance of (2) two ft. so that servic-
ing and general maintenance can be carried out with a mini-
mum of difficulty. Raising the heat pump off the floor a few
inches is generally a good practice since this will prevent un-
necessary rusting of the bottom panel of the unit.
We recommend that the heat pump be placed on a piece of
2" styrofoam covered with 1/4" plywood. The styrofoam will
smooth out any irregularities in the cement floor while the
plywood will distribute the weight of the BOREAL® unit
evenly over the styrofoam. This process will also deaden the
compressor noise emitted from the bottom of the cabinet.
As an alternative, several pieces of 2" x 4" lumber can be
placed under the unit running from the electrical connection
side to the filter rack side of the heat pump. Laying the 2" x
4"'s in this manner will give the best support since they will
be at right angles with the internal steel compressor and heat
exchanger supports.
Materials supplied by
BOREAL
®
BOREAL® supplies the ACDX heat pump with all inter-
nal valving and headering preassembled, pressure tested and
ready to be installed to the customers duct system and under-
ground copper exchanger loops. The underground coil assem-
blies are also supplied pre-tested and sealed with 100 psig.
nitrogen pressure. A ACDX system may comprise from 2 to 5
underground loops. One loop is required for each nominal
"ton" of compressor capacity. The standard loops are 1/2" OD
type “L” or “K” copper tubing. When the dealer unpacks the
coils the integrity of the loops can easily be checked by at-
taching a suitable pressure gauge to the 1/4" schrader valve on
the coil assembly. The pressure read at room temperature
should be approx. 100 psig. (+- 5 psig.) If a loop is not within
this tolerance, it should be set aside for retesting or returned
to BOREAL® for replacement. Under no circumstances
should a copper ground loop be used if there is any question
that it may not be pressure tight.
The ACDX heat pump unit has been high pressure tested
for leaks and has a holding charge of 30 psig. (nitrogen) when
the dealer receives it.
Materials you will need (inside)
A lineset is required to connect the heat pump to the under-
ground coils which will be installed outside the structure. This
lineset consists of one 3/8" liquid line and one 1/2" gas line
for each "ton" or loop installed. The dealer will be required to
silver braze (5% silfos) the required indoor linesets from the
point of entry to the basement or installation area to the heat
pump.
