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HAZARDOUS VOLTAGE - DISCONNECT POWER BEFORE SERVICING

WARNING:

ALL phases of this installation must comply with NATIONAL, STATE AND LOCAL CODES
IMPORTANT — 

This Document is 

customer property

 and is to remain with this unit.  Please return to service infor-

mation pack upon completion of work.

Installer’s Guide

COOLING ONLY AIR CONDITIONER

HEAT PUMP

Low Ambient Control Kit

BAYLOAM103

HDPC-IN-18C 

18-HE46D1-3B-EN

LOW AMBIENT KIT CONTENTS:

1 - Controller Module

1 - Liquid Line Temperature Sensor

1 - Outdoor Air Temperature Sensor

1 - B Y O Low Voltage Wiring Harness

1 - Sensor Clamp

1 - Thermal Grease

1 - Insulation Tape

1 - Information Label

3 - Screws, Wire Nuts, Wire Ties

1 - Installer’s Guide.

INSPECTION:

Check carefully for any shipping damage. This must be 

re    ported to and claims made against the transportation 

 company immediately. Any missing parts should be re-

ported to your supplier at once and replaced with autho-

rized parts only.

INSTALLATION:

NOTE:  

As the head pressure control is applied to units op-

erating in low ambient conditions, it is required that 

the units have compressor crankcase heaters and 

non-bleed txv’s.Refer to the Low Ambient Applica-

tion documentation.

ATTACH INFORMATION LABEL

Attach the Information Label to the control box cover. This 

­label,­identifies­fan­motor­cycling­during­low­ambient­op

-

eration.

MOUNTING CONTROL MODULE

  1. Be certain power to unit is DISCONNECTED.
  2. Remove cover panel on control box compartment.
  3. Install control module into the control box.
 

a. If installing into an air conditioner only unit (non 

heat pump), use the three (3) screws provided 

and attach to the control box as illustrated in Fig-

ure 1.

 

b. If installing into a heat pump unit, remove the 

three (3) screws holding the defrost board, place 

low ambient kit assembly behind the defrost 

board and reattach the defrost board and low am-

bient control with the three (3) screws provided in 

the original defrost board mounting location. See 

Figure 1.

MOUNTING CONTROL BOARD

Summary of Contents for BAYLOAM103

Page 1: ...nce and replaced with autho rized parts only INSTALLATION NOTE As the head pressure control is applied to units op erating in low ambient conditions it is required that the units have compressor crank...

Page 2: ...he insulation tape b If installing on a heat pump unit attach the liquid line sensor to the liquid line running vertically directly behind the control box Apply thermal grease supplied to the liquid l...

Page 3: ...motor lead to the black wire from the solid state relay on the control module This wire has a sleeved 1 4 male tab for attaching to the fan motor wire terminal Connect the other black wire from the so...

Page 4: ...the N C terminal on the defrost board relay from where the fan motor was disconnected Low voltage wires Connect the 3 pin wire assembly to J5 on the con trol board 3 pin male connector NOTE To ease t...

Page 5: ...sconnected Low voltage wires Connect the 3 pin wire assembly to J5 on the con trol board 3 pin male connector NOTE To ease the insertion of the connector housing onto the J5 header place the connector...

Page 6: ...termin ing the liquid temperature set point the same as in Manual Mode If the controller has acquired an ap proach temperature then the liquid temperature set point is determined as follows Liquid Tem...

Page 7: ...off accordingly SYSTEM CHECK OUT COOLING UNITS ONLY Verify that the control module is installed and wired per the instructions contained within this installer s guide J5 Blue connected to B J5 Yellow...

Page 8: ...Switch S1 may be used to verify the Control Module has con trol over the fan Momentarily depress the TEST Switch S1 on the Control board The fan should then cycle 3 seconds on then 3 seconds off for...

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