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5604542-UIM-B-0419

Johnson Controls Ducted Systems

5

7.

Pack fiberglass insulation and a sealing material such as perma-
gum around refrigerant lines where they penetrate a wall to reduce
vibration and to retain some flexibility.

8.

For systems with total line length exceeding 75 feet (22.86 m), see
Piping Application Guide (P/N 247077) for vapor and liquid line siz-
ing, calibration of liquid line pressure loss or gain, determination of
vapor line velocity, elevation limitations, TXV connections, system
charging, traps, etc.

PRECAUTIONS DURING BRAZING OF LINES

All outdoor unit and evaporator coil connections are copper-to-copper
and should be brazed with a phosphorous-copper alloy material such
as Silfos-5 or equivalent. DO NOT use soft solder. The outdoor units
have reusable service valves on both the liquid and vapor connections.
The total system refrigerant charge is retained within the outdoor unit
during shipping and installation. The reusable service valves are pro-
vided to evacuate and charge per this instruction.

Serious service problems can be avoided by taking adequate precau-
tions to assure an internally clean and dry system.

PRECAUTIONS DURING BRAZING SERVICE VALVE

Precautions should be taken to prevent heat damage to service valve
by wrapping a wet rag around it as shown in Figure 5. Also, protect all
painted surfaces, insulation, and plastic base during brazing. After braz-
ing, cool joint with wet rag.

Valve can be opened by removing the service valve cap and fully insert-
ing a hex wrench into the stem and backing out counter-clockwise until
valve stem just touches the chamfered retaining wall.

Connect the refrigerant lines using the following procedure:

1.

Remove the cap and Schrader core from both the liquid and vapor
service valve service ports at the outdoor unit. Connect low pres-
sure nitrogen to the liquid line service port.

2.

Braze the liquid line to the liquid valve at the outdoor unit. Be sure
to wrap the valve body with a wet rag. Allow the nitrogen to con-
tinue flowing.

3.

Carefully remove the plugs from the liquid and vapor connections at
the indoor coil.

4.

Braze the liquid line to the indoor coil liquid connection. Nitrogen
should be flowing through the indoor coil.

5.

Slide the grommet away from the vapor connection at the indoor
coil. Braze the vapor line to the vapor connection. After the connec-
tion has cooled, slide the grommet back into original position.

6.

Protect the vapor valve with a wet rag and braze the vapor line con-
nection to the outdoor unit. The nitrogen flow should be exiting the
system from the vapor service port connection. After this connec-
tion has cooled, remove the nitrogen source from the liquid fitting
service port.

7.

Replace the Schrader core in the liquid and vapor valves.

8.

Go to SECTION IV for TXV installation.

9.

Leak test all refrigerant piping connections including the service
port flare caps to be sure they are leak tight. DO NOT OVER-
TIGHTEN (between 40 and 60 inch - lbs. maximum).

10. Evacuate the vapor line, indoor coil, and liquid line to 500 microns

or less. See Section V.

11. Replace cap on service ports. Do not remove the flare caps from

the service ports except when necessary for servicing the system.

 FIGURE 4:  

Underground Installation

 CAUTION

Dry nitrogen should always be supplied through the tubing while it is
being brazed, because the temperature required is high enough to
cause oxidation of the copper unless an inert atmosphere is provided.
The flow of dry nitrogen should continue until the joint has cooled.
Always use a pressure regulator and safety valve to insure that only
low pressure dry nitrogen is introduced into the tubing. Only a small
flow is necessary to displace air and prevent oxidation.

 WARNING

This is not a backseating valve. The service access port has a valve
core. Opening or closing valve does not close service access port.
If the valve stem is backed out past the chamfered retaining wall, the
O-ring can be damaged causing leakage or system pressure could
force the valve stem out of the valve body possibly causing personal
injury.

TO INDOOR COIL

TO OUTDOOR UNIT

LIQUID LINE

CAP

PVC
CONDUIT

INSULATED

VAPOR LINE

A0152-001

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 FIGURE 5:  

Heat Protection

 CAUTION

Do not install any coil in a furnace which is to be operated during the
heating season without attaching the refrigerant lines to the coil. The
coil is under pressure which must be released to prevent excessive
pressure build-up and possible coil damage.

NOTICE

Line set and indoor coil can be pressurized to 250 psig with dry nitro-
gen and leak tested with a bubble type leak detector. Then release
the nitrogen charge.
Do not use the system refrigerant in the outdoor unit to purge or leak
test.

 CAUTION

Do not connect manifold gauges unless trouble is suspected. Approx-
imately 3/4 ounce of refrigerant will be lost each time a standard man-
ifold gauge is connected.

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Содержание TH4 Series

Страница 1: ...2 B 32 42 s Gen2 21 LIST OF TABLES Maximum Minimum Operating Limit Conditions 2 R 410A Saturation Properties 8 YHE18 Heat Charging Charts 8 YHE24 Heat Charging Charts 8 YHE30 Heat Charging Charts 9 YH...

Страница 2: ...on the UPGNET web site Provide adequate structural support for the unit ADD ON REPLACEMENT RETROFIT When this unit is being used as a replacement for an R 410A unit it is required that the outdoor uni...

Страница 3: ...HU EUDFH XQGHU FHQWHU RI FRPSUHVVRU 127 QVXUH DGHTXDWH ZDOO VXSSRUW 87 21 6SHFLDO FDUH PXVW EH WDNHQ WR DYRLG UHFLUFXODWLRQ RI GLVFKDUJH DLU WKURXJK RXWGRRU FRLO FIGURE 2 Alternative Installation Clea...

Страница 4: ...taken not to damage the couplings or kink the tubing Use clean hard drawn copper tubing where no appreciable amount of bending around obstruction is necessary If soft copper must be used care must be...

Страница 5: ...ide the grommet back into original position 6 Protect the vapor valve with a wet rag and braze the vapor line con nection to the outdoor unit The nitrogen flow should be exiting the system from the va...

Страница 6: ...place on TXV and install liq uid line to the top of the thermal expansion valve Adjust assembly so liquid line aligns with hole in access panel Hand tighten the liq uid line and apply an additional 1...

Страница 7: ...e for the indoor unit s static pressure vs CFM or to a curve chart CHARGING THE UNIT The factory charge in the outdoor unit includes enough charge for the unit 15 ft 4 6 m of refrigerant piping and th...

Страница 8: ...80 60 70 80 60 70 80 60 70 80 60 70 80 450 Liquid Pressure PSIG 381 427 472 351 394 436 336 384 432 318 363 409 274 324 375 276 318 361 600 Liquid Pressure PSIG 345 389 434 319 355 404 308 354 400 294...

Страница 9: ...58 303 348 1400 Liquid Pressure PSIG 309 351 393 292 336 381 285 332 379 272 315 357 255 299 342 246 290 335 Suction Pressure PSIG 136 109 96 80 60 52 YHE TH4 RHP14L35 CF CM CU42 AE42 AVC42 RFCX42CE C...

Страница 10: ...oor Temperature F 60 70 80 60 70 80 60 70 80 60 70 80 60 70 80 60 70 80 1400 Liquid Pressure PSIG 336 384 433 312 359 406 293 344 395 279 321 364 230 290 349 248 282 316 1600 Liquid Pressure PSIG 320...

Страница 11: ...cess panel FIELD CONNECTIONS POWER WIRING 1 Install the proper size weatherproof disconnect switch outdoors and within sight of the unit 2 Remove the screws at the top and sides of the corner cover Sl...

Страница 12: ...ton be supplied at all times To see connection diagrams of all UPG equipment the Low Voltage System Wiring document is available online at www upgnet com in the Product Catalog Section INDOOR CUBIC F...

Страница 13: ...ing table summarizes the behavior of the control when the two TEST pins are connected More detailed descriptions of the various functions are included in other sec tions of this document TABLE 11 TEST...

Страница 14: ...rrangement of the refrigeration circuit within the coil The control may initiate a defrost cycle even when the coil is not completely cov ered with frost This is normal operation The control regulates...

Страница 15: ...ur regardless of the liq uid line coil temperature reading The coil does not have to be cold for the unit to be forced into defrost Once the defrost cycle begins the con trol shall follow the normal d...

Страница 16: ...te flash code The control will reset the soft lockout condition when any of the follow ing occur after removal of the fault condition 1 Power is cycled to the R or Y inputs of the control This will ca...

Страница 17: ...OPEN REMOTE DISCONNECT SO ELECTRICAL SUPPLY TO HEAT PUMP IS SHUT OFF COMPONENTS SHOWN IN DASH LINES ARE OPTIONAL DUAL CAPACITOR SHOWN SEPARATE CAPACITORS MAY BE USED ON ACTUAL UNIT WIRING MUST CONFOR...

Страница 18: ...RAL 1 2 3 4 5 LEGEND AS AMBIENT SENSOR CAP CAPACITOR CC CONTACTOR COIL CCH CRANKCASE HEATER HPS HIGH PRESS SWITCH HS HEATER SWITCH CS COIL SENSOR LPS LOW PRESS SWITCH RV REVERSING VALVE SC START CAPAC...

Страница 19: ...LE PERSONAL INJURY TO PREVENT ELECTRICAL SHOCK OPEN REMOTE DISCONNECT SO ELECTRICAL SUPPLY TO HEAT PUMP IS SHUT OFF COMPONENTS SHOWN IN DASH LINES ARE OPTIONAL WIRING MUST CONFORM TO NATIONAL AND LOCA...

Страница 20: ...RICAL SHOCK OPEN REMOTE DISCONNECT SO ELECTRICAL SUPPLY TO HEAT PUMP IS SHUT OFF COMPONENTS SHOWN IN DASH LINES ARE OPTIONAL WIRING MUST CONFORM TO NATIONAL AND LOCAL CODES IF ANY OF THE ORIGINAL WIRE...

Страница 21: ...TOR CONNECT L2 OF CONTACTOR TO NEUTRAL 1 2 3 4 5 LEGEND AS AMBIENT SENSOR CAP CAPACITOR CC CONTACTOR COIL CCH CRANKCASE HEATER HPS HIGH PRESS SWITCH HS HEATER SWITCH CS COIL SENSOR LPS LOW PRESS SWITC...

Страница 22: ...5604542 UIM B 0419 22 Johnson Controls Ducted Systems NOTES...

Страница 23: ...ta Venting if applicable Electrical Line Voltage Outdoor Unit Model Outdoor Unit Serial Filter Thermostat Accessories Filter Location s Connections Per Installation Instructions and Local Codes Gas pi...

Страница 24: ...ON OFF or the appropriate Value for the fields that apply to the defrost control board installed Run Time Time and Temperature board only 30 60 or 90 minutes Bonnet Sensor Present HEAT Refrigerant Ch...

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