14
WSHP-PRC001-EN
Waterside Economizer
(option)
The beauty of the waterside economiz-
er is it’s ability to take advantage of
any loop condition that results in cool
water temperatures. A prime example
would be during fall, winter and spring
when cooling towers have more ca-
pacity than required and could be con-
trolled to lower temperatures for
economizer support.
Another more common inexpensive
means of free comfort cooling in-
cludes buildings systems where pe-
rimeter heating and core cooling are
needed. In this system, the perimeter
units extract heat from the building
loop while in the heating mode, forc-
ing the building loop temperature to
drop. Where as, the core are of a build-
ing may require cooling in summer or
in winter based upon lighting, people
and equipment.
If the water-source system design con-
tained an economizing coil option, the
moderate temperature loop water cir-
culated through a core water-source
system can provide an inexpensive
means to satisfy room comfort with-
out operating the water-source heat
pump’s compressor.
During economizer mode, fluid enters
the unit, and passes by a water tem-
perature sensing bulb. This tempera-
ture sensing bulb determines whether
the two position, three-way valve will
direct the water through the waterside
economizing coil, and to the heat
pump condenser, or through the con-
denser only. If the water temperature
is 55 F or less, fluid will flow into the
economizing coil, while simultaneous-
ly halting mechanical operation of the
compressor. Mechanical cooling will
continue on a call for second stage
from the thermostat.
The factory built waterside economiz-
er is available on all GEH models, and
all 12 1/2 to 25 GEV models. The 1/2
through 5-ton GEV may be ordered to
accept a field provided waterside
economizing package.
Features and
Benefits
Figure 22: Model GEH with waterside economizer package
Figure 23: Waterside economizer system
Note: Condensate overflow is not available with
the waterside economizer option.
Содержание Axiom GEH006
Страница 107: ...WSHP PRC001 EN 107 Control Wiring Basic 24V 1 PH 208V 60HZ 1PH ...
Страница 108: ...108 WSHP PRC001 EN Control Wiring Deluxe 24V 3 PH 208V 60HZ 3PH ...
Страница 109: ...WSHP PRC001 EN 109 Control Wiring Tracer ZN510 1PH 208V 60HZ 1PH ...
Страница 110: ...110 WSHP PRC001 EN Dimensional Data Tracer ZN524 3PH 460V 60HZ 3PH ...
Страница 123: ...WSHP PRC001 EN 123 Dimensional Data Front Return Back Supply 12 1 2 15 Ton ...
Страница 124: ...124 WSHP PRC001 EN Dimensional Data Back Return Front Supply 12 1 2 15 Ton ...
Страница 125: ...WSHP PRC001 EN 125 Dimensional Data Front Return Top Supply 12 1 2 15 Ton ...
Страница 126: ...126 WSHP PRC001 EN Dimensional Data Back Return Top Supply 12 1 2 15 Ton ...
Страница 143: ...WSHP PRC001 EN 143 GEV 12 1 2 to 25 Tons ...