Bard SH261, SH311 Installation Instructions Manual

INSTALLATION INSTRUCTIONS

WALL MOUNTED

PACKAGE HEAT PUMPS

Models

SH261
SH311

Bard Manufacturing Company, Inc.
Bryan, Ohio 43506

Since 1914...Moving ahead just as planned.

Manual : 2100-409C
Supersedes: 2100-409B
File: Volume III Tab 17
Date: 07-20-06

© Copyright 2003

Manual 2100-409C
Page 1 of 25

CONTENTS

Getting Other Informations and Publications 3

Wall Mount General Information

Heat Pump Wall Mount Model Nomenclature.......... 4

Shipping Damage .................................................... 7

General ................................................................ 7

Duct Work ................................................................ 7

Filters ................................................................ 7

Fresh Air Intake ....................................................... 8

Condensate Drain .................................................... 8

Installation Instructions

Wall Mounting Information ....................................... 9

Mounting the Unit .................................................... 9

Wiring – Main Power ............................................. 14

Wiring – Low Voltage Wiring ................................. 14

Optional Outdoor Thermostat Applications ............ 15

Thermostat Indicators ............................................ 17

Low Voltage Connections ...................................... 17

Start Up

Important Installer Note ......................................... 18

High Pressure Switch ............................................ 18

Three Phase Scroll Compressor Start Up.............. 18

Phase Monitor ....................................................... 18

Service Hints ......................................................... 18

Sequence of Operation .................................. 18 & 19

Pressure Service Ports .......................................... 19

Defrost Cycle ......................................................... 19

Troubleshooting

Solid State Heat Pump Control

Troubleshooting Procedure ................................... 21

Checking Temperature Sensor Outside

Unit Circuit ............................................................. 22

Fan Blade Setting Dimensions .............................. 23

Removal of Fan Shroud ......................................... 23

Refrigerant Charge ................................................ 23

Pressure Tables ..................................................... 24

Optional Accessories ............................................. 25

Figures

Figure 1 Unit Dimensions ...................................... 5

Figure 2 Fresh Air Damper Assembly ................... 8

Figure 3 Mounting Instructions ............................ 10

Figure 4 Electric Heat Clearance ......................... 11

Figure 5 Wall Mounting Instructions.................... 12

Figure 6 Wall Mounting Instructions.................... 12

Figure 7 Common Wall Mounting Installations.... 13

Figure 8 Unit 24V Terminal Board ....................... 14

Figure 9 Compressor Cutoff and Outdoor

Thermostat Wiring ................................ 15

Figure 10 Compressor Cutoff and Outdoor

Thermostat Wiring ................................ 15

Figure 11 Electric Heat Hold-Off Wiring ................ 16

Figure 12 Electric Heat Hold-Off Wiring ................ 16

Figure 13 Defrost Control Board ........................... 20

Figure 14 Fan Blade Setting ................................. 23

Manual 2100-409C
Page 2 of 25

Tables

Table 1 Electrical Specifications .......................... 6

Table 2 Thermostat Wire Size ........................... 14

Table 3 Wall Thermostat .................................... 17

Table 4 Troubleshooting .................................... 21

Table 5 Fan Blade Dimensions .......................... 23

Table 6 Refrigerant Charge ............................... 23

Table 7 Indoor Blower Performance .................. 23

Table 8 Recommended Operating Ranges ....... 23

Table 9 Pressure Table – Cooling ...................... 24

Table 10 Pressure Table – Heating...................... 24

Table 11 Optional Accessories ............................ 25

Getting Other Information and Publications

These publications can help you install the air
conditioner or heat pump. You can usually find these at
your local library or purchase them directly from the
publisher. Be sure to consult current edition of each
standard.

National Electrical Code ...................... ANSI/NFPA 70

Standard for the Installation .............. ANSI/NFPA 90A

of Air Conditioning and Ventilating Systems

Standard for Warm Air ...................... ANSI/NFPA 90B

Heating and Air Conditioning Systems

Load Calculation for ....................... ACCA Manual J or

Winter and Summer Air Conditioning Manual N

Low Pressure, Low Velocity Duct . ACCA Manual D or
System Design for Winter and Manual Q
Summer Air Conditioning

For more information, contact these
publishers:

ACCA Air Conditioning Contractors of America

1712 New Hampshire Avenue
Washington, DC 20009
Telephone: [phone]
Fax: [phone]

ANSI American National Standards Institute

11 West Street, 13th Floor
New York, NY 10036
Telephone: [phone]
Fax: [phone]

ASHRAE

American Society of Heating Refrigerating,
and Air Conditioning Engineers, Inc.

1791 Tullie Circle, N.E.
Atlanta, GA 30329-2305
Telephone: [phone]
Fax: [phone]

NFPA National Fire Protection Association

Batterymarch Park
P.O. Box 9101
Quincy, MA 02269-9901
Telephone: [phone]
Fax: [phone]

Manual 2100-409C
Page 3 of 25

WALL MOUNT GENERAL INFORMATION

HEAT PUMP WALL MOUNT MODEL NOMENCLATURE

SH 26 1 – A 08 X X X X X B

MODEL NUMBER

CAPACITY

26 – 2 Ton
31 – 2

½

To n

VENTILATION OPTIONS

X – Barometric Fresh Air Damper (Standard)
B – Blank-off Plate
M – Motorized Fresh Air Damper
V – Commercial Room Ventilator - Motorized with Exhaust
E – Economizer (Internal) - Fully Modulating with Exhaust
R – Energy Recovery Ventilator - Motorized with Exhaust
P – Commercial Room Ventilator - w/Exhaust Power Open & Close

NOTE: For 0KW and circuit breakers (230/208 V) or pull disconnects (460 V) applications, insert 0Z in the KW field of model number.

REVISIONS

VOLTS & PHASE

A – 230/208/60-1
B – 230/208/60-3
C – 460/60-3

KW

COLOR OPTIONS

X – Beige (Standard)
1 – White
2 – Mesa Tan
4 – Buckeye Gray
5 – Desert Brown
8 – Dark Bronze

OUTLET OPTIONS

X – Front (Standard)

FILTER OPTIONS

X – 1-Inch Throwaway (Standard)
W – 1-Inch Washable
P – 2-Inch Pleated

COIL OPTIONS

X – Standard
1 – Phenolic Coated Evaporator
2 – Phenolic Coated Condenser
3 – Phenolic Coated Evaporator

CONTROL
MODULES

and Condenser

Manual 2100-409C
Page 4 of 25

FIGURE 1

UNIT DIMENSIONS

Manual 2100-409C
Page 5 of 25

TABLE 1

2

2

1

3

2

2

eriWdnuorG

eziS

rewoPdleiF

eziSeriW

rekaerB.tkC

lanretxE

roesuF

mumixaM

yticapmA

muminiM

tiucriC

AtkCBtkCAtkCBtkCAtkCBtkCAtkCBtkC

dnuorG

eziS

eriW

rewoP

dleiF

eziS

eriW

lanretxE

rekaerB

roesuF

mumixaM

TIUCRICELGNIS TIUCRICLAUD

1

tiucriC

ELECTRICAL SPECIFICATIONS

yticapmA

muminiM

tiucriC

3

rewoP

.stkC

.oN

dleiF

esahP&

detaR

stloV

Z0A-162HS1-802/03212253801A/NA/NA/NA/NA/NA/NA/NA/N

ledoM

Z0B-162HS3-802/032171520101A/NA/NA/NA/NA/NA/NA/NA/N

01514141A/NA/NA/NA/NA/NA/NA/NA/N

Z0C-162HS3-0641

Z0A-113HS1-802/032162040101A/NA/NA/NA/NA/NA/NA/NA/N

11514141A/NA/NA/NA/NA/NA/NA/NA/N

Z0C-113HS3-0641

Z0B-113HS3-802/032102520101A/NA/NA/NA/NA/NA/NA/NA/N

1 Maximum size of the time delay fuse or HACR type circuit breaker for protection of field wiring conductors.

2 Based on 75° C copper wire. All wiring must conform to the National Electrical Code and all local codes.

3 These “Minimum Circuit Ampacity” values are to be used for sizing the field power conductors. Refer to the National Electric Code (latest

attention to Note 8 of Table 310 regarding Ampacity Adjustment Factors when more than three conductors are in a raceway.

revision), article 310 for power conductor sizing.

CAUTION: When more than one field power conductor circuit is run through one conduit, the conductors must be derated. Pay special

Manual 2100-409C
Page 6 of 25

SHIPPING DAMAGE

Upon receipt of equipment, the carton should be
checked for external signs of shipping damage. If
damage is found, the receiving party must contact the
last carrier immediately, preferably in writing,
requesting inspection by the carrier’s agent.

GENERAL

The equipment covered in this manual is to be installed
by trained, experienced service and installation
technicians.

The refrigerant system is completely assembled and
charged. All internal wiring is complete.

The unit is designed for use with or without duct work.
Flanges are provided for attaching the supply and return
ducts.

These instructions explain the recommended method to
install the air cooled self-contained unit and the
electrical wiring connections to the unit.

These instructions and any instructions packaged with
any separate equipment required to make up the entire
heat pump system should be carefully read before
beginning the installation. Note particularly “Starting
Procedure” and any tags and/or labels attached to the
equipment.

While these instructions are intended as a general
recommended guide, they do not supersede any national
and/or local codes in any way. Authorities having
jurisdiction should be consulted before the installation is
made. See Page 3 for information on codes and
standards.

Size of unit for a proposed installation should be based
on heat loss calculation made according to methods of
Air Conditioning Contractors of America (ACCA). The
air duct should be installed in accordance with the
Standards of the National Fire Protection Association
for the Installation of Air Conditioning and Ventilating
Systems of Other Than Residence Type, NFPA No.
90A, and Residence Type Warm Air Heating and Air
Conditioning Systems, NFPA No. 90B. Where local
regulations are at a variance with instructions, installer
should adhere to local codes.

DUCT WORK

Any heat pump is more critical of proper operating
charge and an adequate duct system than a straight air
conditioning unit. All duct work, supply and return,
must be properly sized for the design airflow
requirement of the equipment. Air Conditioning
Contractors of America (ACCA) is an excellent guide to
proper sizing. All duct work or portions thereof not in
the conditioned space should be properly insulated in
order to both conserve energy and prevent condensation
or moisture damage.

Refer to Table 7 for maximum static pressure available
for duct design.

Design the duct work according to methods given by
the Air Conditioning Contractors of America (ACCA).
When duct runs through unheated spaces, it should be
insulated with a minimum of one inch of insulation.
Use insulation with a vapor barrier on the outside of the
insulation. Flexible joints should be used to connect the
duct work to the equipment in order to keep the noise
transmission to a minimum.

A 1/4 inch clearance to combustible material for the
first three feet (3') of duct attached to the outlet air
frame is required. See Wall Mounting Instructions and
Figures 3, 5 and 6 for further details.

Ducts through the walls must be insulated and all joints
taped or sealed to prevent air or moisture entering the
wall cavity.

CAUTION

Some installations may not require any return
air duct. A metallic return air grille is required
with installations not requiring a return air
duct. The spacing between louvers on the
grille shall not be larger than 5/8 inches.

Any grille that meets the 5/8 inch louver criteria, may be
used. It is recommended that Bard Return Air Grille Kit
RG-2 through RG-5 or RFG-2 through RFG-5 be
installed when no return duct is used. Contact
distributor or factory for ordering information. If using
a return air filter grille, filters must be of sufficient size
to allow a maximum velocity of 400 fpm.

NOTE: If no return air duct is used, applicable

installation codes may limit this cabinet to
installation only in a single story structure.

FILTERS

A 1-inch throwaway filter is supplied with each unit.
The filter slides into position making it easy to service.
This filter can be serviced from the outside by removing
the service door. A 1-inch washable filter and 2-inch
pleated filter are also available as optional accessories.
The internal filter brackets are adjustable to
accommodate the 2-inch filter by bending down the tabs
to allow spacing for the 2-inch filters.

Manual 2100-409C
Page 7 of 25

FRESH AIR INTAKE

All units are built with fresh air inlet slots punched in
the service panel.

The blank-off plate is available upon request from the
factory and is installed in place of the fresh air damper
shipped with each unit.

If the unit is equipped with the fresh air damper
assembly, the assembly is shipped already attached to
the unit. The damper blade is locked in the closed
position. To allow the damper to operate, the maximum
and minium blade position stops must be installed. See
Figure 2.

All capacity, efficiency and cost of operation
information as required for Department of Energy
“Energyguide” Fact Sheets is based upon the fresh air
blank-off plate in place and is recommended for
maximum energy efficiency.

BLOWER DAMPER ASSEMBLY

CONDENSATE DRAIN

A plastic drain hose extends from the drain pan at the
top of the unit down to the unit base. There are openings
in the unit base for the drain hose to pass through. In the
event the drain hose is connected to a drain system of
some type, it must be an open or vented type system to
assure proper drainage.

FIGURE 2

Manual 2100-409C
Page 8 of 25