heating check charts SERVICE AND SUBMITTAL Cancels: SP02-2 SP INDEX DIAGRAM (ON UNIT)

Transcription

1 SERVICE AND SUBMITTAL heating check charts Cancels: SP02-2 SP INDEX MODEL 661AJX AJX AJX AJX AJX AJX AJX MJX MJX MJX MJX MJX BEX036-D 661BJX018-D 661BJX024-A, D 661BJX030-A, D 661BJX036-A, E 661BPX036-D 661NJX024-D 661NJX030-D 661NJX036-D 810AJX AJX AJX AJX AJX AJX AJX BEX036-E 661BEX BEX BEX BJX018-E 661BJX024-E 661BJX030-E 661BJX036-D, F 661BJX BJX BJX BPX036-E 661BPX BPX BPX NJX024-E 661NJX030-E 661NJX036-E 661NJX NJX048 HERTZ DIAGRAM (ON UNIT) FIG. NO /663AJX /663AJX /663AJX /663AJX /663AJX /663AJX ANX ANX ANX ANX ANX ANX CNX CNX CNX CNX CNX CNX CNX CNX CNX CNX CNX CNX CNX BNX BNX BNX BNX BNX BNX BNX CNX CNX CNX CNX CNX CNX HNX HNX HNX HNX HNX

2 FIELD OPERATING PRESSURE CHARGING HIGH COMPRESSOR SPEED (HIGH VAPOR VALVE, LOW LIQUID VALVE, SUCTION SUCTION SERVICE PORT) HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH HIGH SUCT HIGH HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT To check system operation during heating cycle, use this table. Table indicates whether a correct relationship exists between system operating pressure and air temperature entering indoor and outdoor units. If pressure and temperature do not match on chart, system refrigerant charge may not be correct or other system abnormalities may exist. Do not use table to adjust refrigerant charge. When charging is necessary during heating season, weigh in total charge as indicated on unit rating plate. Rating plate charge is correct system charge for systems which have 15 ft of tubing. Adjust charge.6 oz of refrigerant per foot of tubing. Remove any refrigerant remaining in system before recharging. If the system has lost complete charge, evacuate and recharge by weight REV. B Fig A

3 FIELD OPERATING PRESSURE CHARGING HIGH COMPRESSOR SPEED (HIGH VAPOR VALVE, LOW LIQUID VALVE, SUCTION SUCTION SERVICE PORT) HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH HIGH SUCT HIGH HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT REV. B Fig A

4 HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH HIGH SUCT HIGH HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT REV. B Fig A

5 HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT REV. B Fig A

6 HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT REV. B Fig A

7 HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT REV. A Fig A

8 HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT REV. A Fig A

9 HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT HIGH SUCT REV. B Fig A

10 REQUIRED SUBCOOLING COOLING MODE HEATING MODE MODEL OUTDOOR REQ D OUTDOOR REQ D SIZE TEMP F S.C. F TEMP F S.C. F REQUIRED LIQUID LINE TEMPERATURE (PSIG) Liquid Pressure at Service Valve Required Subcooling Temperature ( F) WARNING Service valve gage port may not be equipped with Schrader valve (valve core). To prevent personal injury, make sure valve stem is back-seated (counterclockwise) before removing cap. Wear safety glasses and gloves when handling refrigerant. This unit is factory charged with R-22. The amount is shown on the rating plate. The charge is adequate for most systems using a matched indoor coil and a line set not exceeding 15 feet in length. See installation instructions for the use of a line set length exceeding 15 feet. The subcooling chart on the left may be used in the field for checking refrigerant charge at off ARI conditions. For an accurate charge, use the weigh in method. FIELD CHARGING PROCEDURE (In cooling mode for indoor units equipped with a TXV) 1. Operate unit a minimum of (10) minutes before checking charge. 2. Refer to "Required Subcooling" table to find the required subcooling temperature. 3. Measure pressure at the liquid line service valve gage port by using an accurate gage. 4. Measure temperature of liquid line near outdoor coil, using an accurate thermometer, either electronic or thermister type. 5. Using Required Liquid Line Temperature table find point where required subcooling temperature intersects the measured liquid service valve pressure to obtain the proper liquid line temperature. 6. To obtain the required liquid line temperature at the measured liquid line pressure, add refrigerant if the liquid line temperature is higher than indicated or remove if lower. Allow a tolerance of ± 3 F. FOR HEATING ONLY 1. Defrost unit before checking charge. Outdoor coil must be free of frost and/or ice. 2. Accumulator may momentarily hold refrigerant after defrost cycle, therefore, allow 15 min of normal operation following defrost cycle before checking charge. 3. This outdoor unit is equipped with a thermal expansion device, therefore, the subcooling chart on the left may be used for checking purposes only REV. A Fig A BDP Co. P.O. Box 70 Indianapolis, IN Printed in U.S.A b Catalog No. BDP