LENNOX EL240XA Heat Pump Check Valve Kit Instruction Manual
- June 4, 2024
- Lennox
Table of Contents
LENNOX EL240XA Heat Pump Check Valve Kit
INSTALLATION INSTRUCTIONS FOR HEAT PUMP CHECK VALVE KIT – USED WITH
ELA240 / EL240XA SERIES UNITS
RETAIN THESE INSTRUCTIONS FOR FUTURE REFERENCE
WARNING:
Improper installation, adjustment, alteration, service or maintenance can
cause property damage, personal injury or loss of life. Installation and
service must be performed by a licensed professional HVAC installer or
equivalent, service agency, or the gas supplier.
CAUTION:
As with any mechanical equipment, contact with sharp sheet metal edges can
result in personal injury. Take care while handling this equipment and wear
gloves and protective clothing.
Shipping and Packing List
Check parts for shipping damage; if any damage is found, immediately contact
the last shipping carrier.
Package 1 of 1 contains:
- 2 – Check valve assemblies (for dual circuit coils)
- 1 – Installation instruction
- Catalog # 16G33
- Model # A2CVLV11N-1
- Part # 603163-03
- Affected Units ELA240 EL240XA
General
This instruction is intended as a general guide and does not supersede
local codes in any way. Consult authorities who have jurisdiction before
installation.
Installation
WARNING:
Polyol ester (POE) oils used with HFC-410A refrigerant absorb moisture very
quickly. It is very important that the refrigerant system be kept closed as
much as possible. DO NOT remove line set caps or service valve stub caps until
you are ready to make connections.
WARNING:
Danger of fire. Bleeding the refrigerant charge from only the high side may
result in pressurization of the low side shell and suction tubing. Application
of a brazing torch to a pressurized system may result in ignition of the
refrigerant and oil mixture. Check the high and low pressures before applying
heat.
WARNING:
Danger of explosion!
Can cause equipment damage, injury, or death.
When using a high pressure gas such as dry nitrogen to pressurize a
refrigeration or air conditioning system, use a regulator that can control the
pressure down to 1 or 2 psig (6.9 to 13.8 kPa).
CAUTION:
- Brazing alloys and flux contain materials which are hazardous to your health.
- Avoid breathing vapors or fumes from brazing operations. Perform operations only in well ventilated areas.
- Wear gloves and protective goggles or face shield to protect against burns.
- Wash hands with soap and water after handling brazing alloys and flux.
- Loosen screw on clamp and remove sensing bulb from vapor line as illustrated in figure 2.
- Cut liquid line and extension tube between TXV and distributor as illustrated in figure 2.
- Debraze equalizer line from manifold of coil.
- Braze check valve assembly to coil as illustrated in 1 – Loosen screw on clamp and remove sensing bulb from vapor line as illustrated in Figure 3. Wrap both ends of TXV with a wet rag to protect the TXV internal components. Leave wet rags on TXV until the brazed connections have had time to cool down
- Install new TXV sensing bulb in same location as the one removed in step 1. Secure with existing clamp and screw.
- Repeat above procedure for second stage.
- Flush, leak test and evacuate the system before adding refrigerant.
FIGURE 2. Remove TXVs
FIGURE 3. Installed Check Valve Kit
Documents / Resources
|
LENNOX EL240XA Heat Pump Check Valve
Kit
[pdf] Instruction Manual
ELA240, EL240XA, Heat Pump Check Valve Kit, EL240XA Heat Pump Check Valve Kit,
Pump Check Valve Kit, Check Valve Kit, Valve Kit
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