Trane Axiom GEHB 006, Installation, Operation And Maintenance Manual

Page: 61 / 96

WSHP-SVX01E-EN
61
Installation
15. Install the six hanging isolation
grommets into the hanging
brackets The unit isolators were
located in the return-air section
of the unit. See Step 2. Isolators
for the economizing package are
located with the economizer.
16. Insulate the economizing piping
package and the supply/return/
by-pass hoses (3-hoses) via field
provided pipe insulation.
Insulating the piping will stop
condensation from forming on
the pipe and dripping onto the
ceiling tiles.
Note: Trane does not provide
insulation on the
economizing piping package.
This insulation must be field
provided and field installed.
17. Install filter rack (top and bottom)
to the economizing package. The
filter rack is located in the unit’s
packaging along with the filter.
18. Hang Unit. See Figure 52 on
page 52 for hanging of the
packaged unit. Bottom screws
referenced in step 4 must be
installed at this time.
19. Field pipe the drain lines of the
waterside economizer and water-
source heat pump together prior
to installing a condensate trap.
See
Figure 53 on page 52 for
proper trapping of condensation.
Figure 81. Step 15
Waterside Economizer
Installation for GEV and
GEH 6 to 25 Ton Models

WARNING
Hazardous Voltage!
Disconnect all electric power,
including remote disconnects before
servicing. Follow proper lockout/
tagout procedures to ensure the
power can not be inadvertently
energized. Failure to disconnect
power before servicing could result
in death or serious injury.

WARNING!
Grounding Required!
Follow proper local and state
electrical code on requirements for
grounding. Failure to follow code
could result in death or serious
injury.
The following steps were sequenced
to aid in the installation and mating
of a waterside economizer to a water-
source heat pump (GEV and GEH 6
through 25 ton models).
1. Remove the filter frame from the
unit.
2. Remove the waterside service
panel from the unit.
3. Remove the control box service
panel from the unit.
Figure 82. Step 19
Table 38. Economizer part numbers
Unit
60 HZ
Unit
50 HZ
Waterside
Economizer
Part Number
006-015 006-012 4474 1690 0100
018-030 015-024 4474 1691 0100
036-042 030-036 4474 1692 0100
048-060 042-060 4474 1693 0100
4. Remove the economizer and
miscellaneous mounting parts
from it’s packaging.
5. GEV ONLY: Mount the
economizer support angle (4475
1637 0100) found in the
economizer packaging in the
same holes of the return air filter
frame removed in step 1. The
support angle screws into the
unit roof.
6. GEV ONLY: Hang the economizer
assembly from the economizer
support angle mounted in step 5.
7. Secure the economizer to the
unit using the four plates (4475
1630 0100) found in the
economizer packaging. Two
plates should be applied to each
economizer side. GEV ONLY:
Secure the bracket on the bottom
of the economizer cabinet to the
unit compressor compartment
center post.
8. Install the field portion of the
water piping and the 3-way valve
together.
9. VERIFY The control board for the
waterside economizer is located
at the back of the control box.
The temperature rating of this
board is factory set to 55ºF.
10. Thread the economizer’s
entering water temperature
sensor (4RT1) through the water-
in line of the water-source heat
pump. This sensor is used by the
economizer’s 3-way valve to
determine if water flow should
be directed through the
waterside economizing coil.
11. Tie wrap the thermistor to the
water line (supply side) upstream
of the water pipe to the
economizer. The thermistor must
be situated so that the thermistor
is capable of reading the actual
entering water temperature
regardless of the economizer’s
on or off situation.
12. Insulate the thermistor with
tubing insulation.
13. Tie wrap each end of the tubing
insulation to prevent air
filtration. The tie wraps and
insulation are located in a baggie
and shipped inside of the unit.
14. Thread the factory wire harness
through the low voltage hole of