Carrier Understanding TXV Sensing Bulb Location and Installation Details for Air Conditioners

Page 16

LEGEND

TXV — Thermostatic Expansion Valve

NOTE: The 8 o’clock position is shown above.

Fig. 9 — TXV Sensing Bulb Location

DISCONNECT

PER NEC

ELECTRIC

HEATER

ACCESSORY

24 V CONTROL WIRE

	UNIT	QUANTITY REQUIRED	FIGURE REFERENCE
	38ARQ008,012	1	B
	38AQS016	2	A
	38ARQ012 (2)	2	A
	38ARQ012,	2	A
	AQS016	2	A
	AQS016

LEGEND

TXV — Thermostatic Expansion Valve

Fig. 11 — Filter Drier Quantity and Location

FUSED

DISCONNECT

SWITCH*

40RMQ024

UNITRETURN AIR

SUBBASE

ACCESSORY

15 DIAMS MIN

LEGEND

BULB CAPILLARY

TUBES

8 DIAMS MIN

		SIGHT
		GLASS*
		FILTER
		DRIER*
	10 DIAMS
	MIN
	CONDENSATE	FUSED
	CONDENSATE	DISCONNECT
	DRAIN	DISCONNECT
	DRAIN	SWITCH*
		SWITCH*

CONDENSING

UNIT B

INSULATED

VAPOR LINE

LIQUID LINE

CONDENSING

NEC — National Electrical Code

TXV — Thermostatic Expansion Valve

Piping

*Field supplied.

NOTES:

1.All piping must follow standard refrigerant piping techniques. Refer to Carrier System Design Manual for details.

2.All wiring must comply with the applicable local and national codes.

3.Wiring and piping shown are general points-of-connection guides only and are not intended for, or to include all details for, a specific installation.

4.Filter driers must be bi-flow type suited for heat pump duty.

5.Condensing unit A should be the first on and last off and be connected to the lower half of the coil.

6.Internal factory-supplied TXVs not shown.

INSULATED

VAPOR LINE

LIQUID

LINE

UNIT A

Fig. 10 — Typical Installation — 40RMQ024,028

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Contents Installation, Start-Up Service Instructions Installation 40RM Physical Data, English Cooling Units 40RMQ Physical Data, English Heat Pump Units Unit 40RMQ008 012 016 024 028 Nominal Capacity Tons No. of Splits No. of Circuits per Split40RMS Physical Data, English Chilled Water Units Unit 40RMS40RM Physical Data, SI Cooling Units Unit 40RM40RMQ Physical Data, SI Heat Pump Units 40RMS Physical Data, SI Chilled Water Units Unit Unit Weight 40RM014 40RM01640RM024 40RMQ01640RM028 40RM03440RMQ028 40RMS02840RM 016 - B 5 0 1 GC Unit007 008 010 012 014 016 024 028 034 40RM 40RMQ 40RMSTypical Unit Positioning Preferred Suspension Technique Refrigerant and Chilled Water Piping Access Holes TXV Sensing Bulb Location Factory-Installed Nozzle and Distributor Data Fitting Requirements014-024 Typical 40RMS Chilled Water Piping Condensate Drains Wiring and Service Access Side Panel Removed Cover Removed TypicalElectrical Data, Standard Motors MocpElectrical Data, Alternate Motors MocpEquip GNDHTR IFCLubricant Data Manufacturer LubricantFan Shaft Bearing Fan Pulley Alignment Align as follows Filter Removal/Replacement Fan Motor Data, Alternate Motor English Fan Motor Data, Standard Motor English40RMS 40RMQ Fan Motor Data, Standard Motor SI Fan Motor Data, Alternate Motor SIStandard Drive Data, 60 Hz English Medium-Static Drive Data, 60 Hz EnglishHigh-Static Drive Data, 60 Hz English Standard Drive Data, 60 Hz SIHigh-Static Drive Data, 60 Hz SI Medium-Static Drive Data, 60 Hz SI008 012 016 024 028 Standard Drive Data, 50 Hz English Medium-Static Drive Data, 50 Hz English40RMQ Unit Unit 40RMQ 40RMSStandard Drive Data, 50 Hz SI High-Static Drive Data, 50 Hz English014 034 008 012 016 024 Medium-Static Drive Data, 50 Hz SI High-Static Drive Data, 50 Hz SIUnit Airflow RMQExternal Static Pressure in. wg 40RM Cfm Rpm Bhp 800007 400 008 000External Static Pressure kPa 100 150 200 250 300850 990350 400 450 500 550 600 008 600 016 300921 975 1026 External Static Pressure kPa 100 150 200 250 300 008 1420016 2830 024 3300External Static Pressure kPa 350 400 450 500 550 600 Unit Airflow Pressure Drop Copyright 2004 Carrier Corporation Preliminary Information Check Voltage Imbalance Comp A1 Comp B1