Ground-loop heat pump applications, Hts series split system – Comfort-Aire HTS Series Split System,Two Stage, 2-5 Tons User Manual

Page 11

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11

Installation, Operation & Maintenance

HTS SERIES SPLIT SYSTEM

Heat Controller, LLC

Table 2: Approximate Fluid Volume (U.S. gal. [L]) per
100’ of Pipe

Figure 4: Loop Connection (Indoor Compressor Section)

Ground-Loop Heat Pump Applications

Table 3: Antifreeze Percentages by Volume

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]

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.

Air Pad or
Extruded
polystyrene
insulation board

P/T Plugs

Insulated

Hose Kit

Flow

Controller

To Loop

Unit Power
Disconnect

AH & Thermostat
Wiring

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