COLEMAN / EVCON IND. Controls And HVAC Accessories Manual L0612103
User Manual: COLEMAN COLEMAN / EVCON IND. Controls and HVAC Accessories Manual COLEMAN / EVCON IND. Controls and HVAC Accessories Owner's Manual, COLEMAN / EVCON IND. Controls and HVAC Accessories installation guides
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6"
700 t
& ,2,455,-,, 00g
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DIVlPORTANT NOTICE
These instructions are intended for the use of qualified individuals specially trained and experienced in installation of
this type of equipment and related system components,
Installation and service personnel
states to be licensed.
are required by some
Persons not qualified shall not install this equipment or
interpret these instructions.
NOTE
The words "Shall" or "Must" indicate a requirement which is
essential to satisfactory and safe product performance.
The words "Should" or "May" indicate a recommendation
or advice which is not essential and not required but which
may be useful or helpful.
WARNINGJ
1. IMPROPER INSTALLATION OR SERVICE MAY DAMAGE EQUIPMENT, CAN CREATE A HAZARD AND
WILL VOID THE WARRANT_.
2. WHEN WORKING WITH HIGH PRESSURE GASES
AND REFRIGERANTS USE PROTECTIVE GOGGLES
- OR FACE SHIELD - TO AVOID INJURY AND/OR
COUPLING
& PLUG
HALF
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" --
)
'
J-
POSSIBLE LOSS OF VISION. LIQUID REFRIGER_
ANTS CAN CAUSE SERIOUS INJURIES BY FREEZING AFFECTED AREAS,
iMPORTANT
These one shot adapter fittings shall be connected
ONLY to the type o| one, shot valve as used on:
Indoor Coils: 2400, 3800, 6200, MBC, MBH Series
Outdoor Units: 2400, 3800, 6200, BRCQ & BRHQ Series
2442-7001 Adapter Kit
Tubing size is 3/4" and 3/8".
2455- 7001 Adapter K_
Tubing size is 7/8" and 3/8".
The following essential tools are needed for a satisfactory installation:
1. Bottle of dry nitrogen and correct regulator.
2. Oxyacetylene welding unit.
3. Two-stage vacuum pump capable of pulling a deep
vacuum of 500 microns or below.
4. Micron gauge.
5. Service charging and testing manifold gauges.
6. Bottleof HCFC-22.
7. Hand tools.
COUPLING HALF
& PLUG
u
OUTDOOR UNIT ADAPTERS
FIG.2
(
FIELD FABRICATED
"_..
Unstallation
Procedure
The following steps are very important when installings refrigerant cooling/heating system, and next to be followed
precisely to insure a strong, leak tight and trouble free system free of dirt and moisture. A sweat fit refrigerantline systern must be installed by a qualified air conditioning service
person. Only persons experienced in sweat fit refrigeration
line installation and familiar with silver brazing techniques
should make this installation.
1. Set outdoor unit and indoor coil in place.
2. Apply a small amount of refrigerant oil to the threads
on the sweat fit adapters. Adapters with schraeder fittings should be installed at the outdoor unit. Install
these adapters hand tight on the outdoor unit.
CAUTION:
Do not overtighten the fittings as this may
pierce the fitting diaphragm which would cause a loss
of refrigerant.
J
J
SEE FIG, 2
9. Clean the socket of the fittings and pipe ends to be
joined with a fine grit sanding cloth or tubing brush,
•1O,Do not wipe or handle surfaces after cleaning. All surfaces to be joined must be free of oil, grease, dust, and
oxides.
11 ,Remove the plug from the refrigerant line end before
joining,
12,Assemble all adapters, pipes, and fittings to be
brazed.
13,Remove the cores from the schraeder valves on the
adapter fittings.
14,Wrap the adapter fittings with a heat sink, e,g. wet rag
to protect the "0" ring when brazing.
15.Attach the hose from the nitrogen drum regulator to
the schraeder valve on the adapter fitting to be brazed.
3. If sweat fit fittings are installed on indoor coil, indoor
coil fittings must be tightened all the way, piercing the
fittings, thereby releasing the coil charge. This step will
allow nitrogen to flow through the system while brazing.
4. Use only a good refrigerant grade copper tubing
which is seamless and has been kept sealed until
ready to use.
5. Determine the route the refrigerant lines will follow,
sloping the lines toward the outdoor unit,
6. Cut the refrigerant lines to length using a tubing cutter.
(Never use a hacksaw to cut refrigerant lines. This will
create an abundant supply of metal particles to contaminate the system, The metal "dust" cannot be easily removed.)
7. Remove all burrs from the lines using a reamer or deburring tool.
8. Seal the refrigerant lines until ready to braze to keep
from contaminating them.
Evcon Industries,
16.Using a 15% silver bearing alloy braze all fittings except one end of the vapor line.
17. Pull this fitting joint apart and plug the line so it will not
become contaminated with insulation.
18. Next, install vapor line insulation, then push back from
final connection and braze this joint.
19.Remove the nitrogen connections and heat sinks.
20.Reinstall the schraeder valve cores of the adapter fittings.
21 .Pressurize the line and indoor coil with full drum pressure of HCFC-22,
22.Leak check all joints and repair any leaks.
23.Connect vacuum pump to both lines and triple evacuate to 500 microns or below.
24.Add correct amount of refrigerant to the refrigerant
lines and indoor coil. See data sheet of outdoor unit
model installed for correct charge information.
25.Tighten both fittings at the outdoor unit.
26. Leak check all adapter fittings and repair any leaks.
27.The refrigerant portion of the system should now be
ready to operate.
Inc.
3! 10 North Mead
1972 --747
Rev.3
(10/94)
RI.
RO, Box 19014
Wichita, KS 67204-9014
LITHO iN U.S.A,
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