Installation
$LU3DG:LWK
$FFHVV+ROH
6WDLQOHVV6WHHO
%UDLGHG&RQQHFWLQJ
+RVHV
ѥ
CAUTION!
ѥ
0.0
5.0
10.0
15.0
20.0
25.0
30.0
35.0
0 5 10 15 20 25 30 35
Head (ft)
GPM
Speed 1
Speed 2
Speed 3
ѥ
CAUTION!
ѥ
CAUTION!
Using check valves in GT-PE (50YPS) units
will prevent thermo siphoning of the ground loop. If the unit
loses power this may cause the coaxial heat exchanger
to freeze if the ambient temperature falls below the freeze
point of the ground loop
À
uid.
11
R e s i d e n t i a l S p l i t U n i t s - 6 0 H z P u r o n
®
R e v. : 6 D e c . , 2 0 1 1
Internal Flow Controller Connections (50YPS Series)
The 50YPS series outdoor compressor section includes a
factory built-in circulator, as shown in
Ä
gure 3.
The circulator in the 50YPS unit is three speed (shipped on
high speed). Lower circulator speeds may be chosen where
appropriate to lower pumping power and match the
Å
ow rate
to the unit’s requirements. The pump speed selection switch
is located on the pump’s electrical box.
50YPS026 and 038 units come standard with one
circulator. 50YPS049 and 064 units come standard with
two circulators, piped in series for greater
Å
ow and head
capabilities.
50YPS026 and 038 units are shipped with ¾” stainless
steel braided hoses connected to unit piping. These hoses
terminate in swivel connections.
50YPS049 and 064 units are shipped with 1” stainless
steel braided hoses connected to unit piping. These hoses
terminate in swivel connections.
Figure 5: Hose Connections (GT-PE Series)
CAUTION!
To avoid equipment damage, DO NOT allow
system water pressure to exceed 100 psi when using
the GT-PE Outdoor Compressor Section. The expansion
tank in the GT-PE has a maximum working water
pressure of 100 psi. Any pressure in excess of 100 psi
may damage the expansion tank.
Figure 6: Pump Curves for GT-PE internal pump(s) - Single Pump
Double Pump Table on following page
