Liebert PFH027A-H, PFH014A-L, PFH020A-L, PFH027A-L, PFH037A-L User Manual

Liebert® Prop Fan Condensing Unit

User Manual–50 & 60Hz

™

Figure i Model number nomenclature

Prop Fan Condensing
Unit with Hot-Gas
Bypass

0 = Standard Noise Level
Z =Quiet-Line

Nominal Capacity
1000 BTU/Hr

P = 208/230-1ph-60Hz
Y = 208/230-3ph-60Hz
A = 460-3ph-60Hz
B = 575-3ph-60Hz
S = 220-1ph-50Hz
M = 380/415-3ph-50Hz

R-407C Refrigerant

— = Standard Coil
C = Coated Coil

PFH 0 37 — P L 7

A = Air Cooled

A

L = 95°F (35°C) Ambient

Liebert Lee-Temp

H = 105°F (41°C) Ambient

Liebert Lee-Temp

Not all options and/or voltage combinations are available.

Example: PFH037A-PL7

TABLE OF CONTENTS

1.0 PRODUCT DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

1.1 Prop Fan Condensing Units. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.1.1 Base System 95°F (35°C) Ambient Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.1.2 105°F (41°C) Ambient Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.1.3 Liebert Quiet-Line

1.2 Optional Equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.2.1 Coated Coil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.2.2 Refrigerant Line Sweat Adapter Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.2.3 277V Step-Down Transformer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

2.0 INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

2.1 Equipment Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

2.2 Location Considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

2.3 Dimensional Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2.4 Piping and Electrical Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.5 Piping Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

2.5.1 Piping for Elevation Differences between PFH and Evaporator . . . . . . . . . . . . . . . . . . . . . . . 14

2.5.2 Pre-Charged Line Sets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

2.5.3 Field-Fabricated Line Sets. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

2.5.4 Installation of Piping to Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

2.5.5 R-407C PFH Installed as a Replacement Condensing Unit in an R-22 System . . . . . . . . . . . 18

2.5.6 General System Charge Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

2.6 Electrical Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

2.6.1 Low-Voltage Control Wire Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

2.6.2 Low-Voltage Control Wire Sizing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

2.7 Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

2.8 Checklist for Completed Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

™

Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

3.0 OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

3.1 Compressor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

3.2 High Head Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

3.3 Liebert

®

Lee-Temp™ Flood Back Head Pressure Control . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

3.4 Hot Gas Bypass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

3.4.1 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

3.4.2 Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

4.0 MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

4.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

4.2 Compressor Failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

4.2.1 Electrical Failure—Burnout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

4.2.2 Mechanical Failure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

4.3 Compressor Replacement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

4.4 Field Charge Verification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

5.0 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

i

FIGURES

Figure i Model number nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Inside Front Cover

Figure 1 Dimensions, horizontal air discharge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Figure 2 Dimensions, top air discharge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Figure 3 Dimensional data, 277V step-down transformer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Figure 4 Piping and electrical connections, horizontal discharge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Figure 5 Piping and electrical connections, top air discharge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Figure 6 General piping arrangement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Figure 7 Electrical field connections, 1- to 5-ton units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Figure 8 Electrical field connections, 8-ton units. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Figure 9 Single-phase, 1-3 ton model schematic, typical. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Figure 10 Three-phase, 3-5 ton model schematic, typical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Figure 11 Three-phase, 8 ton model schematic, typical. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Figure 12 Refrigerant piping diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

TABLES

Table 1 Cabinet and floor planning data, horizontal air discharge. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Table 2 Electrical and piping connections, top air discharge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Table 3 Electrical and piping connections, horizontal air discharge. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Table 4 Piping and electrical connections, top air discharge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Table 5 Pipe length and condenser elevation relative to evaporator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Table 6 Equivalent lengths for various pipe fittings, ft (m). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Table 7 Refrigerant charge in Liebert pre-charged R-407C line sets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Table 8 Liebert

Table 9 Recommended line sizes, OD Cu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Table 10 Piping connection sizes and torque . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Table 11 Line charges - refrigerant per 100 ft. (30m) of Type L copper tube . . . . . . . . . . . . . . . . . . . . . . . . 18

Table 12 Evaporator Charge Levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Table 13 Design refrigerant pressures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Table 14 Application limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Table 15 Recommended minimum wire size. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Table 16 Electrical data—Standard sound and ambient models (95°F/35°C) 60Hz . . . . . . . . . . . . . . . . . . 22

Table 17 Electrical data—High ambient models (105°F/41°C) 60Hz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Table 18 Electrical data—Quiet-Line models (95°F/35°C) 60Hz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Table 19 Electrical data—Standard sound and ambient models (95°F/35°C) 50Hz . . . . . . . . . . . . . . . . . . 23

Table 20 Electrical data—High ambient models (105°F/41°C) 50Hz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Table 21 Electrical data—Quiet-Line models (95°F/35°C) 50Hz. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Table 22 Field verification charge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Table 23 Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

®

PFH unit charge levels and coupling size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

ii

1.0 PRODUCT DESCRIPTION

1.1 Prop Fan Condensing Units

Liebert® propeller fan condensing units are available in a range of sizes and configurations to offer
flexibility in designing a precision environmental control system. The appropriate propeller fan
condensing unit paired with a corresponding Liebert fan coil evaporator model such as Liebert
DataMate
environmental control application requirements.

Split system condensing units are connected to the evaporator unit by two refrigerant lines (four in
8-ton systems) and a low-voltage control cable. The condensing unit requires a separate power source
and power disconnect switch.

1.1.1 Base System 95°F (35°C) Ambient Models

The heart of the refrigeration system is a quiet, high efficiency scroll compressor with internal
vibration isolation mountings, pressure safety controls and built-in overload protection. Standard
features include crankcase heater, high-pressure switch, condenser coil, sight glass, filter drier, hot
gas bypass system with liquid quenching valve, direct drive propeller fan and motor, and Liebert
Lee-Temp
the appropriate evaporator section up to 95°F (35°C) outside ambient temperature.

1.1.2 105°F (41°C) Ambient Models

These models contain similar components to the base models except the coils and fans are sized to
provide catalog capacity of the appropriate evaporator section up to 105°F (41°C) outside ambient
temperature.

™

, Liebert Mini-Mate2™ or Liebert Challenger 3000™ is an effective solution for your

™

flood-back head pressure control. These models are designed to provide catalog capacity of

Product Description

1.1.3 Liebert Quiet-Line™ Models

These models contain similar components to the base models except the coils and fans are sized to
provide catalog capacity of the appropriate evaporator section up to 95°F (35°C) outside ambient
temperature with a noise level of less than 58 dBA.

1.2 Optional Equipment

1.2.1 Coated Coil

This option provides a phenolic coating for the condenser coil (extended lead time is required for this
option; consult factory).

Pre-Charged Refrigeration Line Sets

For efficient condenser/evaporator connection, factory pre-charged line sets with quick connect
fittings are available in 15-ft. and 30-ft. (4.5m and 9m) lengths. Each set includes an insulated copper
suction line and copper liquid line, both charged with R-407C refrigerant and sealed. Line sets are
only available for 1 to 3.5 Ton Units.

1.2.2 Refrigerant Line Sweat Adapter Kit

This kit includes the compatible fittings required (two for the insulated suction line and two for the
liquid line) when using field-supplied interconnecting refrigerant lines instead of the pre-charged line
sets.

1.2.3 277V Step-Down Transformer

A 37.5A, 277V step-down transformer is available for 1-to 3-Ton 60Hz condensing units needing
277/1/60 input power. Apply this transformer to a 208/230/1/60 condensing unit. The transformer is
coated with epoxy and contained in an enclosed, non-ventilated electrical box with adaptable
mounting brackets.

1

2.0 INSTALLATION

Read this entire installation section before starting installation. This section details dimensional,
electrical and piping information and specifications that affect the placement of the PFH unit in
relation the connected evaporator unit, other outside units, barriers and walls.

Be particularly mindful of service and airflow clearances and maximum equivalent piping distances
and in elevation differences between PFH and connected evaporator unit. Consult and confirm
applications with your Emerson Network Power representative when applications exceed any of these
specifications.

2.1 Equipment Inspection

When the unit arrives, inspect all items for any visible or concealed damage. Report any damage to
the carrier immediately and file a damage claim; send a copy of the claim to Emerson Network Power
or your local Emerson sales representative.

If possible, maintain equipment and packaging until it is at the installation location.

2.2 Location Considerations

To ensure an adequate air supply, locate all condensing units in a clean-air area, away from loose dirt
and debris that can clog the coil. Avoid ground-level sites with public access or areas that are exposed
to heavy snow accumulation. Locate unit to allow maximum security and maintenance accessibility.

Installation

Do not locate condensing units near steam, hot air or fume exhausts. Do locate units at least 18 in.
(457mm) from walls, obstructions or adjacent units. For multiple unit installations, space unit so that
the hot condenser exhaust air is not directed toward the condenser air inlet of an adjacent unit.

Install a solid base at least 2 in. (51mm) higher than the surrounding grade and 2 in. (51mm) larger
than condensing unit base dimensions and capable of supporting the condenser’s weight.

2

2.3 Dimensional Data

Figure 1 Dimensions, horizontal air discharge

Installation

Fan Rotation
CCW
(left side)

Left Air Intake

Shaded area
indicates a minimum
clearance of 18" (457mm)
for proper air flow

Table 1 Cabinet and floor planning data, horizontal air discharge

60Hz 50Hz A B C

PFH014A-L —

PFH027A-L —

PFH027A-H —

PFHZ27A-L —

PFH037A-L PFH036A-L

PFH042A-L PFH041A-L

PFH037A-H PFH036A-H

PFHZ37A-L PFHZ36A-L

PFH042A-H PFH041A-H

PFHZ42A-L PFHZ41A-L

PFH067A-L PFH066A-L

Source: DPN000130, Rev. 1

Removable (right) panel
for access to

A

refrigeration component

B

C

C

Removable panel for access
to high-voltage and low-voltage
connections and refrigeration
components

Model Numbers Dimensional Data, in. (mm)

40 (1016) 23-1/2 (597) 18 (457) 200 (91)PFH020A-L —

48 (1219) 31 (787) 18 (457) 241 (109)

53 (1343) 36-1/4 (918) 18 (457) 351 (159)

Right Air Discharge

Shaded area
indicates a minimum
clearance of 18" (457mm)
for proper air flow.

Shaded area
indicates a recommended
clearance of 24" (610mm)
for component access and
removal.

DPN000130
Rev. 1

Net Weight

lb. (kg)

3

Figure 2 Dimensions, top air discharge

Guard Height

Fan Rotation

CW

Shaded area
indicates a minimum
clearance of 18" (457mm)
for proper air flow.

Shaded area
indicates a minimum
clearance of 18" (457mm)
for proper air flow

Shaded area
indicates a recommended
clearance of 24" (610mm)
for component access and
removal.

DPN000131
Rev. 0

Removable panel for access
to high-voltage and low-voltage
connections and refrigeration
components

To p A ir
Discharge

Right Air Intake

Left Air
Intake

4-23/32"

(120mm)

36-1/8"

(918mm)

25-3/32"

(637mm)

46-7/32"

(1174mm)

2"

(51mm)

2"

(51mm) typ.

2"

(51mm)

2"

(51mm)

53-3/16"

(1351mm)

4"

(102mm) typ.

32-1/8"

(816mm)

FOOTPRINT DIMENSIONS

1/2" Bolt-Down Holes
(6 places)

Installation

Table 2 Electrical and piping connections, top air discharge

Model Numbers Dimensional Data in. (mm)

PFH067A-H PFH066A-H

PFHZ67A-L PFHZ66A-L

PFH096A-L PFH095A-L 570 (259)

Source: DPN000131, Rev. 0

53 (1343) 36-1/4 (918) 38-1/2 (978) 5-1/2 (140)

4

Module Net

Weight, lb. (kg)60Hz 50Hz A B C D

488 (222)

Figure 3 Dimensional data, 277V step-down transformer

DPN000647
REV. 0

Notes:

1. 1D18214P1 = Acme catalog no. T-1-37921 for all small systems except 3-ton Liebert DataMate
with integral condenser.

2. 1D18214P2 = Acme catalog no. T-1-37922 for 3-ton Liebert DataMate with integral condenser.

3. Epoxy coated. Suitable for indoor/outdoor service. Horizontal- or vertical-mount.
Totally enclosed, non-ventilated.

4. Both brackets are shipped loose with transformer.

WIRING FOR TRANSFORMER

WALL MOUNTING

RIGID MOUNTING

4.92"

(125mm)

5.5"

(140mm)

.281" (7mm) Dia.
For wall mounting

1D18214P1

10.3" (262mm)
1D18214P2

11.68" (297mm)

Remove screws &
attach bracket

Access to electrical
connections from
bottom

.31" (8mm) Dia.
For rigid mounting
and shipping

1/4-20 (2 screws &
lock washers) for
rigid mounting and
shipping

277V line voltage

Jumpers

H4

H3

H2

H1

X4

X3 X1X2

230V to unit

Notes:

1. Jumper as shown.

2. Connect 277V line to H4 and X1

3. Connect 230V load to H1 and H4

Installation

5

2.4 Piping and Electrical Connections

B

C

A

F

G

D

E

DPN000132
Rev. 1

Liquid Line
Quick Connect
(Male Coupling)

Suction Line
Quick Connect
(Male Coupling)

Electrical Entrance for
High-Voltage Connection

Electrical Entrance for
Low-Voltage Connection

Figure 4 Piping and electrical connections, horizontal discharge

Installation

Table 3 Electrical and piping connections, horizontal air discharge

Model Numbers Electrical Connections, in (mm) Piping Connections, in. (mm)

60Hz 50Hz A B C D E F G

PFH014A-L —

PFH027A-L —

PFH027A-H —

PFHZ27A-L —

PFH037A-L PFH036A-L

PFH042A-L PFH041A-L

PFH037A-H PFH036A-H

PFHZ37A-L PFHZ36A-L

PFH042A-H PFH041A-H

PFHZ42A-L PFHZ41A-L

PFH067A-L PFH066A-L

Source: DPN000132, Rev. 1

2-1/4 (57) 5-1/4 (133) 7-3/4 (197) 8-3/4 (222) — 5 (127) 7-1/4 (184)PFH020A-L —

2 (51) 5-3/4 (146) 8-1/2 (216) 4-3/4 (121) 6-3/4 (171) — 8-1/2 (216)

2 (51) 6 (152) 8-1/2 (216) 4-3/4 (121) 7-3/4 (197) — 8-1/2 (216)

6

Figure 5 Piping and electrical connections, top air discharge

* Sy stem 1 and System 2 on 8 Ton only

Electrical Entrance for
High-Voltage Connection

Electrical Entrance for
Low-Voltage Connection

Liquid Line
Quick Connect
(Male C oupling)

Suction Line
Quick Connect
(Male Coupling)

* System 2 (5 Ton)

DPN000133
Rev. 0

* Sy stem 1 (3 Ton)

Installation

Table 4 Piping and electrical connections, top air discharge

Electrical Connections

Model Numbers

60Hz 50Hz A B C D E F G

PFH067A- H PFH066A-H

PFHZ67A- L PFHZ66A-L —

PFH096A- L PFH095A-L 11-1/2 (292)

Source: DPN000133, Rev. 0

2

(51)

in. (mm)

6

(152)

8-1/2
(216)

4-3/4
(121)

Piping Connections

in. (mm)

7-3/4
(197)

8-1/2
(216)

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7