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278410-UIM-K-1010

Johnson Controls Unitary Products

9

External Relay Outputs

The control includes three outputs to drive external relays having 24
VAC coils. The outputs have a maximum rating of 1.0 Amp pilot duty at
24 VAC.

HUM OUT

The HUM OUT output can be used to drive an external relay or solenoid
(24 VAC coil) to control a humidifier. The output is energized when the
HUM input is energized, the HUM STAT is in the YES position, and the
control has a thermostat call for heating (heat pump or electric heat).

EAC

The EAC output can be used to drive an external relay (24 VAC coil) to
control an electronic air cleaner. The output is energized whenever the
blower relay on the control is energized. Models having a high effi-
ciency non-variable speed motor use the EAC output as an input to the
motor. The EAC output can also be used to drive an electronic air
cleaner relay as long as the load of the EAC relay does not exceed 1.0
Amp. An additional connection to the EAC terminals must be made
using a piggyback terminal or similar device.

LOW FAN

The LOW FAN output can be used to drive an external relay (24 VAC
coil) that switches the power input to the motor to a lower speed tap. An
accessory kit for use with PSC motors is available for this application;
Kit S1-4SF06700124.

See Figure 13 for configuring the 5 Ton (X-13 Motor) to 2 speed (low
fan) application. An accessory kit is available (S1-02541173000).

The LOW FAN output is energized when the control has the following
inputs.

Blower Delays

The control includes the following blower delays:

Heat Output and Limit Connections

The control is connected to the heater relays and limit switch using the
6-pin connector. The relay outputs and the limit switch signal are 24
VDC.

The control energizes the heat relays and senses the limit switch input
as shown in Table 6 when the HEAT ENABLE jumper is in the HEAT
position.

The control energizes the first stage of electric heat immediately, the
second stage 10 seconds after the call for second stage heat, and the
third stage 20 seconds after the call for third stage heat.

Depending on the heat kit installed in the air handler, the control pro-
vides the flexibility to configure the amount of heat delivered with the
first stage heating call. As an example, when the control’s W1 input is
connected to the room thermostat’s first stage heat signal, a call for first
stage heat will energize one heating element (HT1). If the control’s W2
input is connected to the room thermostat’s first stage heat signal, a call
for first stage heat will energize two heating elements (HT1 and HT2).
With either configuration, the control will energize three heating ele-
ments (HT1, HT2, and HT3) when it receives a first and second stage
heat input from the thermostat.

Limit Switch and Lockout Operation

Limit Switch Operation

If the HEAT ENABLE jumper is in the HEAT position and the limit switch
opens (fault code 1), the control will immediately de-energize all electric
heat relay outputs and energize the blower (if it wasn’t already ener-
gized). When the limit switch closes, the control will re-energize electric
heat according to the thermostat inputs using normal timings.

Fan On Lock Condition

If the limit switch opens multiple times during a single call for electric
heat (fault code 3) or if the limit switch opens for a long duration (fault
code 4), the control will energize the blower until power is removed from
the control. The control will cycle the heat outputs on and off as the limit
re-closes and opens. The constant fan operation will signal the home-
owner that a problem has occurred and a service call is required.

Soft Lockout

If the limit switch opens for a second long duration period during a sin-
gle call for heat (fault code 5), the control will keep the blower locked on
and lock out the heat outputs for one hour. The control will only reset
this one hour lockout when the power is removed from the control. After
the one hour period has passed, the control will re-energize electric
heat according to the thermostat inputs using normal timings. The
blower will remain locked on from the first long duration limit opening.

TABLE 3: 

Fault Codes

Fault or Status Condition

LED1 (RED)

Flash Code

Status

No power to control

OFF

Normal operation

2s ON / 2s OFF

Control in test mode

Rapid Flash

Control failure

ON

Limit Faults

Limit switch currently open (not in lockout)

1

Multiple limit openings with no call for heat

2

Multiple limit openings during one call for heat

3

Single long duration limit opening

4

Multiple long duration limit openings

5

Fan failure

6

Wiring Related Faults

Simultaneous call for heating and cooling

7

Internal Control Faults

Control recovered from internal event

9

TABLE 4: 

Low Fan Control Inputs

Input

Operational Mode

G

Continuous Fan operation

Y1 or Y1 and O

First stage compressor operation

Y/Y2 and HUM de-energized with 

HUM STAT jumper in YES position

Dehumidification during cooling

TABLE 5: 

Blower Delays

Condition

Blower Delay

Following call for cooling

60 seconds

Following call for heat pump heating

30 seconds

Following call for electric heat heating

10 seconds

TABLE 6: 

Heat Relays

Input

Heat Relay Output

W1

HT1

W2

HT1 and HT2

W1 and W2

HT1 and HT2 and HT3

Summary of Contents for 18B

Page 1: ...ion in any upflow downflow or horizontal application These versatile models may be used for cooling or heat pump operation with or without electric heat A BRAND LABEL available from Distribution may be applied to the center of the blower access panel The unit can be positioned for bottom return air in the upflow position top return air in the downflow position and right or left return in the hor i...

Page 2: ...uest 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...

Page 3: ...ssary based on air handler orienta tion 11 Re position and replace access panels In severe high humidity high temperature indoor unit environments an accessory insulation blanket is available to supplement the stan dard cabinet insulation Insulate with UPG Kit 1VJ0117 for B cabi nets 1VJ0121 for C cabinets or 1VJ0124 on 57 height or 1VJ0224 on 52 height D cabinets or seal completely with adequate ...

Page 4: ...erant Connections Drain Connections for Upflow and Downflow Applications 7 11 32 B A K C 1 1 2 Top Outlet Dimensions Filter Access 18 9 32 TABLE 1 Dimensions Models Dimensions Wiring Knockouts1 Refrigerant Connections Line Size A B C D E F J K Height Width Depth Power Control Liquid Vapor 18B 46 14 1 2 21 1 2 12 3 8 13 29 32 14 19 32 7 8 1 2 1 3 8 1 1 23 32 1 1 4 7 8 1 2 3 8 3 4 24B 46 17 1 2 12 3...

Page 5: ...nce inside the plenum box This turbulence can change the air flow patterns across the heat kit limit switch If the factory sug gested transition can not be fabricated it is recommended a block off plate approximately 8 in height and running the full width of the ple num be attached to the supply opening Please refer to Figure 7 as a visual aid The use of this block off plate will keep better air c...

Page 6: ...R HORIZONTAL APPLICATIONS 2 1 1 2 MIN 1 1 2 x 1 1 2 Angle Recommended length 26 minimum with 2 clearance on both sides of Air Handler MIN 3 8 THREADED ROD VAPOR LINE THERMAL EXPANSION VALVE BULB Required insulation not shown for clarity THERMAL EXPANSION VALVE DISTRIBUTOR BODY LIQUID LINE TXV EQUALIZER LINE NOTICE FIGURE 10 Proper Bulb Location COIL UNDER PRESSURE Relieve pressure by depressing sc...

Page 7: ...e the drains are not subject to any pressure it is not necessary to use Schedule 40 pipe for drain lines DO NOT use teflon tape pipe dope or other sealants The use of a sealant may cause damage and premature failure of the drain pan SECTION IV ELECTRIC HEATER INSTALLATION If the air handler requires electric heat install the electric heat kit according to the installation instructions included wit...

Page 8: ... will not energize the heat relay outputs or sense the limit switch input If the jumper is not present the control will operate as if the jumper is in the HEAT position If the jumper is not present and a heat kit is not pres ent the control will sense an open limit condition and the blower will run continuously Hum Stat Jumper The HUM STAT jumper configures the control to monitor the humidity swit...

Page 9: ...at signal a call for first stage heat will energize two heating elements HT1 and HT2 With either configuration the control will energize three heating ele ments HT1 HT2 and HT3 when it receives a first and second stage heat input from the thermostat Limit Switch and Lockout Operation Limit Switch Operation If the HEAT ENABLE jumper is in the HEAT position and the limit switch opens fault code 1 th...

Page 10: ...ction 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 must meet or exceed the amperage rating of the overcurrent protector circuit breaker or fuse in the circuit Additionally existing aluminum wire within the structure must be sized correctly for ...

Page 11: ... x 20 x 1 Permanent Type Kit 1PF0601BK 1PF0601BK 1PF0601BK 1PF0602BK Shipping Operating Weight lbs H Models 131 125 135 129 142 136 165 159 Models 42C 48D 60D Blower Diameter x Width 10 x 10 10 x 10 11 x 10 Motor HP 3 4 HP 3 4 HP 1 HP Nominal RPM 1075 1075 1050 Voltage 230 Amps Full Load 230 3 8 3 8 7 6 Filter1 Type DISPOSABLE OR PERMANENT Size 20 x 20 x 1 22 x 20 x 1 22 x 20 x 1 Permanent Type Ki...

Page 12: ...4 4HK16501806 0 5 Hi 13 2 17 6 45 1 60 1 3 3 4 4 6 6 8 8 13 2 17 6 42C 4HK 6500506 0 5 Lo 3 6 4 8 12 3 16 4 3 6 4 8 3 6 4 8 3 6 4 8 4HK 6500806 0 5 Med 5 6 7 5 19 2 25 6 2 8 3 75 2 8 7 5 5 6 7 5 4HK 6501006 0 5 Med 7 2 9 6 24 6 32 8 3 6 4 8 7 2 9 6 7 2 9 6 4HK16501306 0 5 Med 9 8 13 33 3 44 4 3 3 4 3 6 5 8 7 9 8 13 0 4HK16501506 0 5 Med 10 8 14 4 36 9 49 1 3 6 4 8 7 2 9 6 10 8 14 4 4HK16501806 0 5...

Page 13: ...45 8 8 4HK 6501006 40 0 47 5 54 5 50 60 8 6 4HK16501306 54 2 63 1 72 2 70 80 4 2 4HK16501506 60 0 69 1 79 5 70 90 4 3 4HK16501806 73 3 83 6 96 1 90 100 3 3 42C 4HK 6500506 20 0 25 9 29 8 30 30 8 8 4HK 6500806 31 3 38 1 43 9 40 45 8 8 4HK 6501006 40 0 47 6 54 8 50 60 6 6 4HK16501306 54 2 63 3 72 5 70 80 4 2 4HK16501506 60 0 69 3 79 8 70 90 4 3 4HK16501806 73 3 83 7 96 4 90 100 3 3 4HK16502006 80 0 ...

Page 14: ...13 Electrical Data 208 230 3 60 Models Heat Kit Three Phase Max Static Min Speed Tap Total Heat1 KW Staging KW MBH W1 Only W2 Only W1 W2 208V 230V 208V 230V 208V 230V 208V 230V 208V 230V 24B 4HK06501025 0 5 Hi 7 2 9 6 24 6 32 8 7 2 9 6 7 2 9 6 7 2 9 6 30B 4HK06501025 0 5 Hi 7 2 9 6 24 6 32 8 7 2 9 6 7 2 9 6 7 2 9 6 4HK065N1525 0 5 Hi 10 8 14 4 36 9 49 1 10 8 14 4 10 8 14 4 10 8 14 4 36C 4HK0650102...

Page 15: ... 485 387 323 221 23 8 22 9 21 7 19 6 17 3 15 6 13 7 11 0 9 1 6 3 Low 654 614 548 483 420 349 302 218 179 130 18 5 17 4 15 5 13 7 11 9 9 9 8 6 6 2 5 1 3 7 30B High 1244 1184 1138 1079 1004 903 841 674 580 457 35 2 33 5 32 2 30 6 28 4 25 6 23 8 19 1 16 4 12 9 Med 956 913 868 815 748 663 574 487 384 N A 27 1 25 9 24 6 23 1 21 2 18 8 16 3 13 8 10 9 N A Low 941 904 862 806 731 643 566 480 361 226 26 6 ...

Page 16: ... 1681 1607 1538 1456 1360 1322 1260 966 770 49 8 47 6 45 5 43 6 41 2 38 5 37 4 35 7 27 4 21 8 Med 1320 1284 1255 1207 1146 1075 988 846 729 572 37 4 36 4 35 5 34 2 32 5 30 4 28 0 24 0 20 6 16 2 Low 1146 1119 1090 1038 992 972 841 725 617 496 32 5 31 7 30 9 29 4 28 1 27 5 23 8 20 5 17 5 14 0 42C High 1883 1764 1657 1543 1435 1327 1210 912 714 527 53 3 50 0 46 9 43 7 40 6 37 6 34 3 25 5 20 2 14 9 Me...

Page 17: ... CLEANING If the coil needs to be cleaned or replaced it should be washed with Calgon CalClean mix one part CalClean to seven parts water Allow solution to remain on coil for 30 minutes before rinsing with clean water Solution should not be permitted to come in contact with painted sur faces LUBRICATION The bearings of the blower motor are permanently lubricated CONDENSATE DRAINS During the coolin...

Page 18: ...278410 UIM K 1010 18 Johnson Controls Unitary Products SECTION XI WIRING DIAGRAM FIGURE 16 Wiring Diagram AHP18 48 ...

Page 19: ...278410 UIM K 1010 Johnson Controls Unitary Products 19 FIGURE 17 Wiring Diagram AHP60 ...

Page 20: ... change without notice Published in U S A 278410 UIM K 1010 Copyright 2010 by Johnson Controls Inc All rights reserved Supersedes 278410 UIM J 0810 Johnson Controls Unitary Products 5005 York Drive Norman OK 73069 ...

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