13
R e s i d e n t i a l S p l i t - 6 0 H z R 2 2 & R 4 1 0 A
R e v. : 5 J u n e , 2 0 0 8
C a r r i e r : Tu r n t o t h e E x p e r t s
Table 2: Antifreeze Percentages by Volume
Table 1: Approximate Fluid Volume (U.S. gal. [L]) per
100' of Pipe
Ground-Loop Heat Pump Applications
Air Pad or
Extruded
polystyrene
insulation board
P/T Plugs
Insulated
Hose Kit
Flow
Controller
To Loop
Unit Power
Disconnect
AH & Thermostat
Wiring
Figure 7: Loop Connection (Indoor
Compressor Section)
Air Pad with access hole
Flow Controller
Header Pit
Backfill carefully to avoid
stress on piping and flow
controller connection
Insulate all piping with 1/2"
[13mm] closed cell insulation
P/T Ports
Figure 8: Loop Connection (Outdoor Compressor Section)
NOTICE!
Cabinet opening around loop piping (outdoor
compressor section) must be sealed to prevent entry of
rodents that could potentially damage unit wiring by chewing
on the insulation.
NOTICE!
Outdoor compressor section may not be tilted
more than 5 degrees from level. Damage to the compressor
or stress on the loop piping could result if unit is tilted. A
concrete pad, anchor posts and/or soil compaction may be
required to avoid tilting as ground settles.
Type
Minimum Temperature for Low Temperature Protection
10°F [-12.2°C]
15°F [-9.4°C]
20°F [-6.7°C]
25°F [-3.9°C]
Methanol
100% USP food grade Propylene Glycol
Ethanol*
25%
38%
29%
21%
25%
25%
16%
22%
20%
10%
15%
14%
* Must not be denatured with any petroleum based product
Fluid Volume (gal [liters] per 100’ [30 meters) Pipe)
Pipe
Size
Volume (gal) [liters]
Copper
1”
4.1 [15.3]
1.25”
6.4 [23.8]
2.5”
9.2 [34.3]
Rubber Hose
1”
3.9 [14.6]
Polyethylene
3/4” IPS SDR11
2.8 [10.4]
1” iPS SDR11
4.5 [16.7]
1.25” IPS SDR11
8.0 [29.8]
1.5” IPS SDR11
10.9 [40.7]
2” IPS SDR11
18.0 [67.0]
1.25” IPS SCH40
8.3 [30.9]
1.5” IPS SCH40
10.9 [40.7]
2” IPS SCH40
17.0 [63.4]
Unit Heat Exchanger
Typical
1.0 [3.8]
Flush Cart Tank
10” Dia x 3ft tall
[254mm x 91.4cm tall]
10 [37.9]