Refrigeration Installation; Lineset Information - Rheem RPVS Series Installation, Operation & Maintenance Instructions Manual

CAUTION!
CAUTION! HFC-410A systems operate at higher
pressures than R-22 systems. Be certain that service
equipment (gauges, tools, etc.) is rated for HFC-410A.
Some R-22 service equipment may not be acceptable.
CAUTION!
CAUTION! Installation of a factory supplied liquid line
bi-directional fi lter drier is required. Never install a suction
line fi lter in the liquid line.
Line Set Installation
Figures 9a through 9b illustrate typical installations of a
compressor section matched to either an air handler (fan coil) or
add-on furnace coil. Table 5 shows typical line-set diameters at
various lengths. Line set lengths should be kept to a minimum
and should always be installed with care to avoid kinking. Line
sets are limited to 60 feet in length (one way). Line sets over
60 feet void the equipment warranty. If the line set is kinked or
distorted, and it cannot be formed back into its original shape,
the damaged portion of the line should be replaced. A restricted
line set will eff ect the performance of the system.
Split units are shipped with a fi lter drier (loose) inside the
cabinet that must be installed in the liquid line at the line set.
All brazing should be performed using nitrogen circulating
at 2-3 psi [13.8-20.7 kPa] to prevent oxidation inside the
tubing. All line sets should be insulated with a minimum of
1/2" [13mm] thick closed cell insulation. Liquid lines should
be insulated for sound control purposes. All insulation
tubing should be sealed using a UV resistant paint or
covering to prevent deterioration from sunlight.
Table 5: Line set Diameters and Charge Information - RPV E/S
Factory†
Model Charge (oz) Charge (oz)
[kg]
025 93 [2.64]
036 120 [3.40]
048 137 [3.89]
062 212 [6.01]
* 60 Feet is the maximum line set length.
** Basic charge includes only the amount required for the condensing unit and the evaporating coil.
An additional amount should be added allowing 0.6oz per ft. for 3/8" [0.6g per cm] and 1.2oz per ft. for 1/2" [1.1g per cm] of line set used.
† Factory charge is preset for 25' [7.6 meters] line set.
Basic**
20 Feet [6 meters]
Liquid Suction
[kg]
76 [2.15] 3/8"
89 [2.52] 3/8"
106 [3.01] 3/8"
150 [4.25] 1/2"

Refrigeration Installation

When passing refrigerant lines through a wall, seal
opening with silicon-based caulk. Avoid direct contact
with water pipes, duct work, fl oor joists, wall studs,
fl oors or other structural components that could transmit
compressor vibration. Do not suspend refrigerant tubing
from joists with rigid straps. Do not attach line set to the
wall. When necessary, use hanger straps with isolation
sleeves to minimize transmission of line set vibration to
the structure.
Installing the Line set at the Compressor Section
Braze the line set to the service valve stubs as shown in Figure
7. Remove the schraeder cores and heat trap the valves to
avoid overheating and damage. On installations with long line
sets, copper adapters may be needed to connect the larger
diameter tube to the stubs. Nitrogen should be circulated
through the system at 2-3 psi [13.8-20.7 kPa] to prevent
oxidation contamination. Use a low silver phos-copper braze
alloy on all brazed connections. Compressor section is
shipped with a factory charge. Therefore, service valves
should not be opened until the line set has been leak
tested, purged and evacuated. See "Charging the System."
Installing the Indoor Coil and Line set
Figure 8 shows the installation of the line set and TXV to a
typical indoor coil. An indoor coil or air handler (fan coil) with a
TXV is required. Coils with cap tubes may not be used. If coil
includes removable fi xed orifi ce, the orifi ce must be removed
and a TXV must be installed as shown in Figure 8. Fasten
the copper line set to the coil. Nitrogen should be circulated
through the system at 2-3 psi [13.8-20.7 kPa] to prevent
oxidation inside the refrigerant tubing. Use a low silver phos-
copper braze alloy on all brazed connections.
40 Feet [12 meters]
Liquid Suction
3/4" 3/8" 3/4"
7/8" 3/8" 7/8"
7/8" 3/8" 7/8"
7/8" 1/2" 7/8"
R e s i d e n t i a l S p l i t
R e v. : 1 3 M a r c h , 2 0 1 5
60 Feet* [18 meters]
Liquid Suction
3/8" 3/4"
3/8" 7/8"
3/8" 7/8"
1/2" 7/8"
15