Carrier 38AN,BK specifications Installation, Start-Upan, For Use in High Wall Applications, Page

38AN,BK with 40QN009,012 Cooling Only/Heat Pump Systems

Installation, Start-Up an

Service Instructions

(For Use in High Wall Applications)

			CONTENTS
					Page
SAFETY CONSIDERATIONS					1
GENERAL			..................................		1,2
INSTALLATION					2-13
Step 1 - Complete Pre-lnstallation Checks					.... 2
•	UNPACK UNIT
•	INSPECT SHIPMENT
Step 2		-	Select Location	.....................	2
Step 3		-	Mount Mounting	Bracket on Wall .... 3
Step 4		-	Mount Outdoor	Section	9
Step 5		-	Connect Refrigerant Piping		I0

•RIGHT REAR AND BOTTOM PIPING CONNECTIONS

•RIGHT SIDE PIPING CONNECTIONS

•LEFT SIDE PIPING CONNECTIONS

•ALL TYPES PIPING CONNECTIONS

Step 6	-	Make Piping Connections	10
Step 7	-	Connect Condensate Drain Line ....	ll
Step 8	-	Make Electrical Connections	11

•INDOOR SECTION WIRING

•OUTDOOR SECTION WIRING

Step 9 - Install Fan Coil Unit Onto
Mounting Bracket	13
START-UP	14-17
40QN Control System	14
Wireless Remote Controllers	14
After Extended Shutdowns	14

	Page
System Safeties and Interlocks	20

•INDOOR FAN FAILURE

•COMPRESSOR SHORT-CYCLING PROTECTION

•INDOOR COIL FREEZE PROTECTION

•INDOOR COIL HIGH-TEMPERATURE PROTECTION

TROUBLESHOOTING	20-27
START-UP CHECKLIST	CL-I, CL-2

SAFETY CONSIDERATIONS

Installing and servicing air-conditioning equipment can be hazardous due to system pressure and electrical compo- nents. Only trained and qualified service personnel should

install or service air-conditioning equipment.

Untrained personnel can perform basic maintenance func- tions such as cleaning coils and filters and replacing filters. All other operations should be performed by trained service personnel.

When working on air conditioning equipment, observe pre- cautions in the literature and on tags and labels attached to unit. Follow all safety codes. Wear safety glasses and work gloves. Use quenching cloth for brazing operations. Have fire extinguisher available. Before installation, read these in- structiens thoroughly. Consult local building codes and Na-

tional Electrical Code (NEC) for special installation requirements.

Seasonal Changeovers		14
To Turn the Unit On and Off		14
Adjusting	Airflow	14
Operating Mode Memory		14
Automatic	Operation (Auto) Mode	14
Operating	Fault Diagnosis	15
Microprocessor Control Operation		15
CLEANING AND MAINTENANCE		18-19
Lubrication		18
To Install or Replace Remote Controller
Batteries		18
To Set the Current Time		18

To Remove and Clean or Replace Air Filters .. 18

•TO REMOVE AIR FILTERS

•TO CLEAN OR REPLACE FILTERS

To Clean Indoor Unit Front Panel			19
To Clean	Indoor Coil		19
To Clean Outdoor Coil (Outdoor Unit)			19
To Clean Condensate Drains			19
SERVICE	...................................		20
Diagnostic	Codes		20
System Tests			20
• THERMISTOR		TESTS
• COMPRESSOR		FAILURE

• REVERSING VALVE FAILURE (38BK Only)

Electrical shock can cause personal injury or death. Be- fore installing or servicing system, be sure to turn off main power to system. There may be more than one dis- connect switch. Turn off indoor fan coil power as applicable.

GENERAL

The Carrier 40QNHOI 2 heat pump high wall fan coil unh (Fig. 1) comes with supplemental electric heat (40QNE009 heat pump fan coil unit does not have electric heat). If your

application requires heating, heat pump units must be used both outdoors and indoors. See Table 1 for recommended

system combinations.

The matched cooling and heat pump systems consist of an outdoor section (condensing unit or heat pump) and an in- door section (fan coil). The outdoor section (38AN or 38BK) is installed alongside the building structure. It can also be installed on a flat roof, deck, or on an apartment building balcony. The indoor section (40QNB009,012 or 40QNE009, 40QNH012) is mounted high on an interior wall that is con- venient for piping connection to the outdoor section. Two sizes are available: 9,000 and 12,000 Btuh cooling capaci- ties. See Fig. 1 for system components, Table 1 for system

ManuPacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

Book 1 4 PC 111 Catalog NO. 535-848 Printed in U.S.A. Form 38A,BI40Q-1SI Pg 1 5-99 Replaces: 53AN,BK-1SI