Pipe Length And Elevation - Heat Controller VMH09SC-1 Service Manual

Service Manual
6.2 Pipe length and the elevation:
1. Single Zone "V" Series Inverter System:
Capacity
Btu/h Gas
(in)
9k 3/8
12k 1/2
18k 1/2
24k 5/8
*Unit charge located on rating plate includes enough refrigerant for 16.5 feet of line set.
*Charge adjustment is not required on line set lengths less than 16.5 feet.
*Capacity is based on standard line set lengths and maximum length is based on reliability.
Oil Traps:
It is not necessary to install oil traps when outdoor unit is located lower than indoor unit.
It is recommended that a trap be installed when outdoor unit is installed 16.5' higher than indoor unit.
Pipe Size Standard
Liquid Length
(in) (ft)
1/4 *16.5
1/4 *16.5
1/4 *16.5
3/8 *16.5
Refrigerant Charge (oz)
Unit Model #
VMH09SC
VMH12SC
VMH18SC
VMH24SC
VMH SerieS
Max
Elevation
A
B
(ft) Min.
26 10
26 10
32 10
32 10
Heat Pump
38.8 oz.
44.1 oz.
58.2 oz.
67.0 oz.
16
Total
Line Length (ft)
A
Max.
65.5
65.5
82
82
Heat Controller, Inc.
Additional
Refrigerant
oz/ft
.2
.2
.2
.4