WSHP-SVX01Y-EN
63
Table 45. Economizer part numbers (continued)
GEH Unit 60 Hz GEH Unit 50 Hz
Waterside
Economizer
Part Number
035-042 030-036 4476 1420 0001
048-060 042-060 4476 1421 0001
Table 46. Economizer part numbers
GEVG Unit 60 Hz
Waterside Economizer
Part Number
006-012 WSHPECN00001
015–018 WSHPECN00002
024–030 WSHPECN00003
036–042 WSHPECN00004
048–060 WSHPECN00005
Waterside Economizer Installation for
GEH and GEV 6 to 25 Ton Models
WWAARRNNIINNGG
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RReeqquuiirreedd!!
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sseerriioouuss iinnjjuurryy..
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hhaazzaarrddss.. TToo aavvooiidd tthheessee hhaazzaarrddss,, yyoouu MMUUSSTT ffoollllooww
rreeqquuiirreemmeennttss ffoorr ffiieelldd wwiirriinngg iinnssttaallllaattiioonn aanndd
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ssttaattee//nnaattiioonnaall eelleeccttrriiccaall ccooddeess..
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.
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 inside the unit. 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 upstream from
the valve. 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 bag and shipped inside of the unit.
14. Route the factory wire harness through the low
voltage hole of the heat pump to the 3-way valve’s
wire harness.
15. Connect the factory installed wire harness to the
wire harness supplied with the 3-way valve.
16. Bundle excess valve wire, and wire tie the bundle
neatly.
17. Install control side service panel to the heat pump.
18. Install the unit filter frame to the economizing inlet.
19. Insulate the economizing piping package with field
supplied pipe insulation. Insulating the piping will
help stop condensation from forming on the pipe.
NNootteess::
• Trane does not provide insulation on the
economizing piping package. This insulation
must be field provided and field installed.
• Trane does not provide condensate
overflow protection of the waterside
economizer. This must be field provided and
field installed.
20. Install waterside service panel to the heat pump.
The economizer condensate line must be trapped prior
to the unit’s drain line. This helps prevent air from
being sucked through the drain line causing
IInnssttaallllaattiioonn
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