background image

1053681-UIM-B-0514

2

Johnson Controls Unitary Products

SAFETY REQUIREMENTS

1. This air handler should be installed in accordance with all national

and local building/safety codes and requirements, local plumbing or
wastewater codes, and other applicable codes. 

2. Read and follow all instructions in this manual. Failure to do so can

result in air handler malfunction, death, personal injury and/or prop-
erty damage.

3. Install this air handler only in a location and position as specified in

the “Unit Installation” section of these instructions. 

4. The air handler is not to be used for temporary heating of buildings

or structures under construction. 

5. Always install the air handler to operate within the air handler’s

intended maximum outlet air temperature. 

6. Provide clearances from combustible materials as listed in the

“Clearances” section of this manual. 

7. Provide clearances for servicing ensuring that service access is

allowed for electric heaters and blower. 

8. Check the unit's rating plate and power supply to be sure that the

electrical characteristics match. 

9. Air handler shall be installed so the electrical components are pro-

tected from water. 

10. Installing and servicing heating/cooling equipment can be hazard-

ous due to the electrical components. Only trained and qualified
personnel should install, repair, or service heating/cooling equip-
ment. Untrained service personnel can perform basic maintenance
functions such as cleaning and replacing the air filters. When work-
ing on heating/cooling equipment, observe the precautions in the
manuals and on the labels attached to the unit and other safety pre-
cautions that may apply. 

11. These instructions cover minimum requirements and conform to

existing national standards and safety codes. In some instances
these instructions exceed certain local codes and ordinances,
especially those who have not kept up with changing residential
and non-HUD modular home construction practices. These instruc-
tions are required as a minimum for a safe installation.

INSPECTION

As soon as a unit is received, it should be inspected for possible dam-
age during transit. If damage is evident, the extent of the damage
should be noted on the carrier’s freight bill. A separate request for
inspection by the carrier’s agent should be made in writing. Also, before
installation the unit should be checked for screws or bolts, which may
have loosened in transit. There are no shipping or spacer brackets
which need to be removed.
Also check to be sure all accessories such as heater kits, suspension
kits, and coils are available. Installation of these accessories or field
conversion of the unit should be accomplished before setting the unit in
place or connecting any wiring, electric heat, ducts or piping.

These air handlers should be transported & handled in an upright,
upflow position. Failure to do so may result in unit damage and per-
sonal injury. Configuration conversions should be done at site of
installation.

 FIGURE 1:  

Return Duct Attachment & Component Location

FRONT VIEW

SIDE VIEW

BLOWER
COMPARTMENT

VERTICAL
DRAIN PAN

REFRIGERANT LINE
CONNECTIONS

PRIMARY DRAIN
UPFLOW 3/4”
THREADED

DUCT WORK MAY
BE FASTENED
CAUTIOUSLY WITH
SCREWS TO THE
SIDES AND REAR OF UNIT

SECONDARY DRAIN
UPFLOW 3/4” THREADED

COIL COMPARTMENT
(Access panel removed)

HORIZONTAL
DRAIN PAN

HORIZONTAL
SECONDARY DRAIN

HORIZONTAL
PRIMARY DRAIN

ALTERNATE
DRAIN CONNECTIONS
UPFLOW/DOWNFLOW

FILTER DOOR

RETURN AIR

DUCT

WHEN ATTACHING DUCT WORK WITH
SCREWS - KEEP SCREWS WITHIN 5/8”
OF SIDES AND BACK OF AIR HANDLER

Содержание AHR18B3XH21

Страница 1: ...els may be used for cooling or heat pump operation with or without electric heat Top and side power wiring and control wiring accessible screw termi nals for control wiring easy to install drain connections and electric heaters all combine to make the installation easy and minimize installa tion cost Electric heat kits are available as field installed accessories Single phase and 3 phase kits are ...

Страница 2: ...ons cover minimum requirements and conform to existing national standards and safety codes In some instances these instructions exceed certain local codes and ordinances especially those who have not kept up with changing residential and non HUD modular home construction practices These instruc tions are required as a minimum for a safe installation INSPECTION As soon as a unit is received it shou...

Страница 3: ...m 36 from front of unit recommended for blower motor coil replacement 3 Condensate drain lines routed to clear filter and panel access 4 Filter removal minimum 36 recommended 5 The ductwork and plenum connected to this unit are designed for zero clearance to combustible materials 6 A combustible floor base accessory is available for downflow appli cations of this unit if required by local code FIG...

Страница 4: ... vertical A coil drain pan If installing the unit in the upflow or downflow position no modifica tion is necessary For units to be installed in the horizontal position the condensate deflector needs to be removed from the vertical drain pan and placed on the horizontal drain pan Remove the condensate deflector and the S clips that attach it to the vertical drain pan Relocate the deflector and S cl...

Страница 5: ...ound may be a problem sound absorbing glass fiber should be used inside the duct Insulation of duct work is a must where it runs through an unheated space during the heating season or through an uncooled space during the cooling season The use of a vapor barrier is recommended to pre vent absorption of moisture from the surrounding air into the insulation Duct work should be fabricated and install...

Страница 6: ...ay be used A 1 filter access rack has been built into the unit Remove filter access cover shown Install proper size filter Standard 1 size permanent or throw away filter may be used or permanent washable filters are avail able using model numbers 1PF0601 602 or 603BK See Table 2 for fil ter size TXV OR ORIFICE METERING DEVICES All air handlers are shipped with flex coils meaning that the evaporato...

Страница 7: ...t to any pressure it is not necessary to use Schedule 40 pipe for drain lines FIGURE 10 TXV FIGURE 11 Proper Bulb Location COIL UNDER PRESSURE Relieve pressure by depressing schrader core The coil should be open to the air for no more than 2 minutes to keep moisture and contaminates from entering the system If the coil can not be brazed into the refrigeration system in that time the ends should be...

Страница 8: ...ing to air handlers is not approved If aluminum conductors are present all applicable local and national codes must be followed when converting from aluminum to copper con ductors prior to connection to the air handler If wire other than uncoated non plated 75 C ambient copper wire is used consult applicable tables of the National Electric Code ANSI NFPA 70 The chosen conductor and connections all...

Страница 9: ...cle of a heat pump Standard wiring will only bring on the first stage of electric heat during defrost See Table 5 for additional information on heat during defrost cycle NOTICE NOTICE FIGURE 14 Blower Speed Connections FACTORY WIRED TO TRANSFORMER FACTORY WIRED TO FAN MOTOR RELAY TERMINAL ON CONTROL BOARD R U P R U P HIGH MED LOW GND 230 VOLT BLOWER MOTOR PSC STANDARD MOTOR CAP N R B BLK TABLE 2 P...

Страница 10: ...ABLE 5 ELECTRIC HEAT PERFORMANCE DATA 208 230 1 60 208 230 3 60 Heater Models1 2 1 0 1 0 no circuit breaker OR 1 with circuit breaker 2 1 2 1 with circuit breaker no breaker jumper bar OR 2 with circuit breaker breaker jumper bar Nominal kW 240V Total Heat kW Staging kW MBH W1 Only W1 W2 208V 230V 208V 230V 208V 230V 208V 230V 1PH 6HK 0 1 6500206 2 4 1 8 2 2 6 2 7 5 1 8 2 2 1 8 2 2 6HK 0 1 6500506...

Страница 11: ...500806 32 0 36 4 41 8 40 45 8 8 6HK 0 1 6501006 40 0 45 1 51 8 50 60 8 6 6HK 1 2 6501306 52 0 58 1 66 8 60 70 6 4 6HK 1 2 6501506 60 0 66 8 76 8 70 80 4 4 AHR29C AHR34C 6HK 0 1 6500206 10 0 13 8 15 4 15 20 12 12 6HK 0 1 6500506 20 0 24 6 27 9 25 30 10 10 6HK 0 1 6500806 32 0 37 6 42 9 40 45 8 8 6HK 0 1 6501006 40 0 46 3 52 9 50 60 6 6 6HK 1 2 6501306 52 0 59 3 67 9 60 70 6 4 6HK 1 2 6501506 60 0 6...

Страница 12: ...25 60 50 25 6 6 10 6 8 10 1 MOP Maximum Overcurrent Protection device must be HACR type circuit breaker or time delay fuse 2 Stated sizes are for 75 C copper wire only If wire other than non plated 75 C ambient copper wire is used consult applicable tables of the NEC and local codes 3 1st Circuit includes the blower motor amps TABLE 8 ELECTRICAL DATA FOR SINGLE SOURCE POWER SUPPLY 208 230 3 60 Air...

Страница 13: ...214 1177 1136 1071 1019 951 828 Medium 705 684 661 592 548 404 266 Low 534 512 460 394 261 167 125 AHR24B High 995 970 935 900 925 795 645 Medium 820 810 780 745 695 545 485 Low 715 695 640 405 370 375 220 AHR29C High 1605 1548 1486 1420 1356 1159 913 Medium 981 960 921 815 756 697 614 Low 769 717 654 561 510 451 389 AHR30B High 1380 1315 1245 1160 1075 990 885 Medium 1060 1040 1005 955 890 860 82...

Страница 14: ... 1068 998 909 813 735 Low 887 861 792 695 649 576 486 AHR30B High 1450 1380 1300 1215 1130 1030 910 Medium 1330 1280 1205 1135 1050 975 780 Low 1160 1120 1065 1005 930 825 635 AHR34C High 1579 1511 1399 1273 1145 1068 978 Medium 1108 1057 987 924 849 770 703 Low 849 802 756 712 630 527 170 AHR36B High 1470 1390 1325 1245 1155 1045 880 Medium 1325 1265 1205 1125 1025 965 840 Low 1115 1075 1025 950 ...

Страница 15: ...1053681 UIM B 0514 Johnson Controls Unitary Products 15 SECTION XI WIRING DIAGRAM FIGURE 15 Wiring Diagram PSC Single Phase Heat Kits ...

Страница 16: ...ENT CODES GND EQUIPMENT GROUND FL FUSIBLE LINK HE HEATING ELEMENT LS LIMIT SWITCH REL RELAY FIELD POWER WIRING 208 230V FACTORY WIRING 208 230V FACTORY WIRING LOW VOLTAGE L1 L2 L3 L1 L2 L3 GND GND GND GND L1 L2 L3 L1 L2 L3 REL1 REL2 REL3 REL4 REL5 REL6 HE1 HE6 HE5 HE4 HE3 HE2 FL FL FL FL FL FL REL1 REL2 REL3 HE1 HE3 HE2 FL FL FL REL1 REL2 REL3 REL4 REL5 REL6 HE1 HE6 HE5 HE4 HE3 HE2 FL FL FL FL FL ...

Страница 17: ...1053681 UIM B 0514 Johnson Controls Unitary Products 17 SECTION XII TYPICAL THERMOSTAT CONNECTIONS FIGURE 17 Typical Wiring Diagram PSC ...

Страница 18: ...1053681 UIM B 0514 18 Johnson Controls Unitary Products NOTES ...

Страница 19: ...r dry bulb temperature Return air dry bulb temperature Temperature drop 1 2 3 4 5 Low Medium Low Medium Medium High High A B C D Outside air dry bulb temperature Return air wet bulb temperature Supply air wet bulb temperature Return static inches of water column Electrical Connections Inspection Complete all that apply Continued on next Page ECM X 13 PSC A B C D Low voltage value between R and C a...

Страница 20: ... noting and correcting any problems Operate the unit through cooling cycles from the thermostat noting and correcting any problems Operate the unit through mechanical heating cycles from the thermostat noting and correcting any problems Operate the unit through emergency heating cycles from the thermostat noting and correcting any problems Job site has been cleaned indoor and outdoor debris remove...

Отзывы: