3.Insulate and caulk wall openings to reduce air infil- tration and refrigerant pipe vibrations on structure.
4.Evacuate piping, if necessary. If either refrigerant piping or the indoor coil is exposed to atmospheric conditions, it must be evacuated to 1000 microns to eliminate contamination and moisture in the system.
V.STEP 5 — CONNECT CONDENSATE DRAIN LINE
Observe all local sanitary codes when installing condensate drains. Refer to Fig. 3 and 14 for drain pipe connection from indoor unit.
1.Use hard polyvinyl chloride (PVC) pipe material with nominal ID of 3/4 in. to connect at drain line. Use pipe insulation
2.To ensure regular flow of condensate water, the drain pipe should be pitched toward an open drain or sump at a downward slope of at least
3.Attach plate with screws under piping hole.
4.Attach drain pipe with nylon wire tie passing through hole (Fig. 15).
NOTE: Do not fasten nylon wire ties tight enough to deform the insulation, as this affects its performance.
5.Insulate condensate drain line(s) that are located in or above an occupied area with a
6.Install an external trap at the end of the condensate line.
NOTE: Should the installation require one, a condensate pump may be ordered as a
Table 4A — Piston and Charge Combinations — Cooling Only Systems
COOLING | OUTDOOR UNIT | PISTON | CHARGE (lb) | |
INDOOR UNIT SIZE | 538A | SIZE | ||
| ||||
024 | 018 | 57 | 7.0 | |
024 | 57 | 7.75 | ||
| ||||
036 | 030 | 65 | 10.1 | |
036 | 70 | 8.9 | ||
| ||||
048 | 048 | 80 | 12.2 | |
060 | 060 | 90 | 12.5 |
Table 4B — Piston and Charge Combinations — Heat Pump Systems
HEAT PUMP | OUTDOOR UNIT | PISTON SIZE | PISTON SIZE | CHARGE (lb) | |
INDOOR UNIT SIZE | 538B | INDOOR | OUTDOOR | ||
| |||||
024 | 018 | 49 | 40 | 7.5 | |
024 | 55 | 43 | 7.8 | ||
| |||||
036 | 030 | 65 | 55 | 12 | |
036 | 70 | 63 | 13 | ||
| |||||
048 | 048 | 82 | 73 | 12.2 | |
060 | 060 | 80 | 12.8 |
*Size 060 indoor heat pump systems use a TXV (thermostatic expansion valve), part no. EA36YD250.
Table 4C — Piston and Charge Combinations — Heat and Cool Systems
HEAT PUMP | OUTDOOR UNIT | PISTON | CHARGE (lb) | |
INDOOR UNIT SIZE | 538A | SIZE | ||
| ||||
024 | 018 | 57 | 7.0 | |
024 | 57 | 7.75 | ||
| ||||
036 | 030 | 65 | 10.1 | |
036 | 70 | 8.9 | ||
| ||||
048 | 048 | 80 | 12.2 | |
060 | 060 | 12.5 |
*Size 060 indoor heat pump systems use a TXV (thermostatic expansion valve), part no. EA36YD250.