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SERVICE
The
HP23
is
a
split-system heat pump. Extra large outdoor coil,
coil circuiting and high outdoor coil air volume
result in a high SEER rating (minimum of 10.0).
HP23-141 through HP23-510 units are designed for
use with an expansion valve or RFCIII system in the
indoor unit. HP23-651/653 units are designed for use
with an expansion valve only in the indoor unit.
All
compressors
are
trouble-free
operation
Compressor components are spring mounted within
the sealed housing. The compressor is installed in the
unit on resilient rubber mounts to assure quiet,
vibration-free operation. A built-in limit protects the
compressor from excessive current and temperatures.
A high pressure safety limit is furnished as standard.
HP23–211 through HP23–650 models are furnished with
crankcase heaters as standard equipment. The heater
prevents liquid from accumulating in the compressor.
The heater is temperature-actuated and operates only
when required. A crankcase heater for HP23-141 units is
optional, but suction accumulator is factory installed.
Several models are available in sizes ranging from 1
through 5 tons.
Model No.
N t f
Net face area (sq. ft.)
(
Condenser
Coil
Tube diameter (in.) & no. of rows
Fins per inch
Diameter (in.) & no. of blades
Motor hp
Condenser
Cfm
Fan
Rpm
Watts
*Refrigerant — 22 charge furnished
Liquid line (o.d. in.) connection (sweat)
Suction line (o.d. in.) connection (sweat)
*Refrigerant charge sufficient for 20 ft. length of refrigerant lines.
**3/8" x 1/4" reducer furnished to adapt to 1/4 field fabricated line set.
***3 /8" x 5/16" reducer furnished to adapt unit to 5/16" line set.
INFORMATION
Corp. 9428–L10
Replaces Corp. 9330-L4
HP23 SERIES UNITS
high-efficiency
residential
hermetically
sealed
and
long
service
SPECIFICATIONS
HP23-141
Outer coil
ft )
Inner coil
3/8 — 1
20 — 3
5 lbs. 3 oz.
UNIT
This manual is divided into sections which discuss major
components refrigerant system, charging procedures,
maintenance, and operation sequence.
Canadian specifications are marked (CAN).
All specifications in this manual are subject to change.
for
life.
HP23-211
12.60
12.60
- - - -
- - - -
3/8 — 1
20
20
20 — 3
1/6
1/6
2630
2630
840
840
210
210
5 lbs. 6 oz.
**3/8
***3/8
1/2
5/8
Page 1
HP23
Litho U.S.A.
HP23-261
HP23-311
12.60
14.70
- - - -
- - - -
3/8 — 1
3/8 — 1
20
20
20 — 3
20 — 3
1/6
1/6
2630
2665
840
850
210
210
6 lbs. 2 oz.
7 lbs. 3 oz.
***3/8
3/8
5/8
3/4
1993 Lennox Industries Inc.
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Table of Contents
Related Manuals for Lennox HP23 Series
Summary of Contents for Lennox HP23 Series
- Page 1 UNIT HP23 SERVICE INFORMATION Corp. 9428–L10 Replaces Corp. 9330-L4 Litho U.S.A. HP23 SERIES UNITS HP23 high-efficiency residential This manual is divided into sections which discuss major split-system heat pump. Extra large outdoor coil, components refrigerant system, charging procedures, maintenance, and operation sequence.
-
Page 2: Specifications (Contd.)
SPECIFICATIONS (contd.) Model No. HP23-411/HP23-413 HP23-461/HP23-463 HP23-511/HP23-513 HP23-651/HP23-653 Outer coil 14.70 20.00 20.00 Net face area (sq ft ) Net face area (sq. ft.) Inner coil - - - - Condenser Coil Tube diameter (in.) & no. of rows 3/8 — 1.3 3/8 —... -
Page 3: I - Unit Information
HP23 UNIT CONTROL BOX SINGLE PHASE UNITS and 5 ton capacities. START CAPACITOR (C7) All major components (indoor blower/coil) must be matched according to Lennox recommendations for DUAL CAPACITOR the compressor to be covered under warranty. Refer to (C12) DEFROST... - Page 4 1 – Compressor Contactor K1 4 – Start Capacitor C7 All single phase units use a start capacitor (C7). C7 is The compressor is energized by a contactor located in located inside the unit control box (see figure 3). C7 is the control box.
- Page 5 Refer to figure 7. HP23 SERIES UNITS TYPICAL DEFROST TIMINGS É É Note – Control begins timing at 0 when defrost thermostat closes. Defrost is terminated when defrost relay is de–energized.
- Page 6 Defrost Control Components 4– “HLD” Terminal Terminal “HLD” holds the internal timer in place 1– Timing Pins 30, 60, 90 between thermostat demands and allows the unit Each of these pins provides a different timed to continue timing upon resumption of thermostat interval between defrosts.
- Page 7 B – Compressor ROTARY COMPRESSOR INTERNALS ROTOR All units except for the -141 units utilize a conventional SHAFT reciprocating compressor. Table shows specifications of compressors used in HP23 series units. TABLE 5 HP23 COMPRESSOR SPECIFICATIONS Unit Voltage Phase Oil fl.oz. ECCENTRIC HP23–141 208/230 26.3...
- Page 8 3 – Compressor Cover (Figure 13) compressor cover OUTDOOR FAN MOTOR AND COMPRESSOR COMPRESSOR COVER ACCESS “MOTOR UP” UNITS (3 TONS AND UNDER) constructed of vinyl-faced COVER SLIT FOR MOTOR Remove six fiberglass is used on all SUCTION FAN GUARD screws LINE HP23-261 through -650 units.
-
Page 9: Refrigerant System
III – REFRIGERANT SYSTEM HP23 SERIES REVERSING VALVE ACCESS (CONTROL BOX REMOVAL) Refer to figures 17, 18 and 19 for refrigerant flow in the NOTE-UNIT ELECTRICAL COMPONENTS heating and cooling modes. The reversing valve is AND PLUMBING HAVE BEEN DELETED energized during cooling demand and during defrost. -
Page 10: Liquid Line Service Valve
A full service non-backseating vapor line service valve is FIGURE 20 used on all HP23 series units. Different manufacturers of The valve is equipped with a service port. There is no schrader valve installed in the liquid line service port. A valves may be used. - Page 11 SCHRADER VALVE Field refrigerant piping consists of liquid and vapor SERVICE PORT lines from the outdoor unit (sweat connections). Use Lennox L10 series line sets as shown in table 7 or field OUTLET SERVICE PORT (TO COMPRESSOR) fabricated refrigerant lines.
- Page 12 HP23-141 REFRIGERATION COMPONENTS SUCTION MUFFLER SUCTION LINE DISTRIBUTOR LIQUID LINE ACCUMULATOR SERVICE PORT DEFROST SENSING SWITCH S6 BULB DISCHARGE LINE SERVICE PORT HIGH PRESSURE FILTER/DRIER SWITCH PORT W/INTERNAL CHECK VALVE EXPANSION VALVE STRAINER MUFFLER HIGH PRESSURE LIQUID LINE FROM INDOOR COIL ROTARY COMPRESSOR SERVICE LIMIT S4...
- Page 13 B – Evacuating the System CAUTION IMPORTANT When using dry nitrogen, a pressure reducing regulator must be used to prevent excessive The compressor should never be used to evacuate pressure in gauge manifold, connecting hoses, and a refrigeration or air conditioning system. within the system.
- Page 14 5 – Place thermometer in well and read liquid line 3 – Make sure thermometer well is filled with temperature. Liquid line temperature should be mineral before checking liquid line a few degrees warmer than the outdoor air temperature. temperature. Table 9 shows how many degrees 4 –...
-
Page 15: Maintenance
65_F 75_F 85_F 95_F 105_F 115_F drop over coil should be checked to determine HP23–141 CB/CBH19–21 HP23–211 CB/CBH19–21 correct blower CFM. Refer Lennox HP23–261 CB/CBH19–26 Engineering Handbook. HP23–311 CB/CBH19–31 HP23–410 CB/CBH19–41 3 – Belt Drive Blowers - Check condition and HP23–410 (CAN) CB/CBH19–41 HP23–460... - Page 16 HP23 SINGLE PHASE OPERATING SEQUENCE Page 16...
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Page 17: Defrost Mode
HP23 SINGLE PHASE OPERATING SEQUENCE A–HP23 P Voltage Operation Sequence 12 – 24VAC energizes compressor contactor K1. This is the sequence of operation for HP23 “P” voltage 13 – K1-1 N.O. closes energizing compressor and units. The sequence is outlined by numbered steps outdoor fan motor. - Page 18 HP23 THREE PHASE OPERATING SEQUENCE Page 18...
- Page 19 HP23 THREE PHASE OPERATING SEQUENCE A–HP23 P Voltage Operation Sequence 13 – Compressor (B1) and outdoor fan motor (B4) begin immediate operation. This is the sequence of operation for HP23 “Y”, “G”, and “J” voltage units. The sequence is outlined by END OF FIRST STAGE HEAT: numbered steps which correspond to circled num- 14 –...