Bard WG3S1 Manual
Form No.
S3396-1112
Supersedes
S3396-212
Page
1 of 12
The Bard Wall-Mount Electric Air Conditioner with gas fired heating is a self contained energy efficient system
which is designed to offer maximum indoor comfort at a minimal cost without using valuable indoor floor space
or outside ground space. This unit is the ideal product for versatile applications such as: new construction,
modular offices, school modernization, portable structures, correctional facilities, retail stores or other
commercial applications. Factory or field installed accessories are available to meet specific job requirements.
THE WALL-MOUNT™ STEP CAPACITY GAS/ELECTRIC - WG*S SERIES
Integrated Part Load Value (IPLV) Efficiency Up to 15.5 BTU/WATT
WG3S1, WG4S1, WG5S1
60H
Z
23,000 to 56,500 BTUH Cooling Capacity
36,000 to 99,000 BTUH Heating Capacity
•
High Efficiency
•
Low Sound Level
Multi-Capacity Two-Stage:
Simple thermostatic control seamlessly
stages the compressor and indoor airflow
rate between high and low capacity
operations without cycling the compressor.
This helps to maximize comfort, humidity
control, energy efficiency and overall
reduction in compressor cycling for
improved system life.
Step Capacity Compressor:
Copeland step-capacity (2-stage) scroll
compressors are designed for increased
efficiency, quieter operation and improved
reliability for longer life.
R-410A Refrigerant:
Designed with R-410A (HFC) non-ozone
depleting refrigerant in compliance with
the Montreal protocol and 2010 EPA
requirements.
Thermal Expansion Valves:
All models use TXV.
Liquid Line Filter Drier:
Protects system against moisture.
Aluminum Finned Copper Coils:
Grooved tubing and enhanced louvered
fin for maximum heat transfer and energy
efficiency.
High & Low Pressure Switches are
Auto-Reset
Built-in lockout circuit resets from the
room thermostat. Provides commercial
quality protection to the compressor.
Compressor Control Module:
Standard on all units. Built-in off-delay
timer adjustable from 30 seconds to 5
minutes. 2-minute on-delay if power
interrupt. 120-second bypass for low
pressure control, and both soft and
manual lockouts for high and low pressure
controls. Alarm output for alarm relay.
Crankcase Heaters:
Factory installed crankcase heaters are
standard on all models. This helps to
insure ease of start at low temperatures
and improves compressor life.
Phase Rotation Monitor:
Standard on all 3 phase scroll
compressors. Protects against reverse
rotation if power supply is not properly
connected.
Twin Blowers:
Move air quietly. All models feature
variable speed blower motors providing
automatic airflow adjustment for high
static or free blow (non-ducted) operation
at a very low sound level. Motor overload
protection is standard on all models.
ECM Indoor Blower Motor:
Features a variable speed motor
providing super-high efficiency, low
sound levels and soft-start capabilities.
The motor is self-adjusting to provide the
proper airflow rate for the staged
capacity, and for higher static pressure in
ducted installations without user
adjustment or wiring changes.
Ventilation Controller:
Automatically adjusts damper position to
maintain the desired ventilation airflow rate
up to 480 cfm of fresh air during any
operation mode. Fully closes during
unoccupied modes. Factory set for 480
cfm. Also, CO
2
sensor ready - just add
CO
2
sensor for demand ventilation based
on CO
2
level in the space.
Electrical Components:
Are easily accessible for routine inspection
and maintenance through a right side,
service panel opening. Features a
lockable, hinged access cover to the circuit
breaker or rotary disconnect switch.
PTCR Start Assist:
Standard on 1-phase models.
Heat Exchanger:
Heavy duty 18-gauge stainless steel
tubular heat exchanger. Mechanically
joined construction. Ten-year warranty.
In-Shot Burners:
Advanced burner design, quiet operation.
Low NOx models available. Low NOx
models can be converted to LP gas. High
altitude kits available.
Integrated DSI Control:
Direct spark ignition control and
remote sensor delivers smooth,
proven ignition sequence.
Timed blower control and
diagnostics are also features of
integrated control.
Gas Controls:
Honeywell gas valve and
burner orifices are factory
standard for natural gas. Field
convertible to LP gas with
certified conversion kit.
Hinged Service Door:
Hinged door with compression latches (one lockable) for filter
service access, heat exchanger inspection, and indoor blower/
motor service.
Pre-Painted 20 Gauge Zinc Coated Steel Cabinet:
Cleaned, rinsed, sealed and dried before the polyurethane
primer is applied. The cabinet is handsomely finished with a
baked on textured enamel, which allows it to withstand 1000
hours of salt spray tests per ASTM B117-03.
16 Gauge Zinc Coated Unit Base
Two-Inch, Pleated Disposable Air Filters:
Are standard equipment.
Condenser Fan and Motor
Shroud Assembly:
Slides out for easy access.
Circuit Breakers/Rotary Disconnect:
Standard on all versions of single (230/208 volt) and three
phase (230/208 volt) equipment. Rotary disconnects are
standard on all versions of three phase (460 volt) equipment.
Slope Top:
Standard feature for water run-off.
Full Length Mounting Brackets:
Built into cabinet for improved appearance and easy installation.
Top Rain Flashing:
Standard feature on all models.
Ventilation Options:
Several patented ventilation options are available and can be
factory or field installed.
G
REEN
R
EFRIGERANT
R-410A
Engineered Features
• Complies with efficiency requirements of ANSI/ASHRAE/IESNA 90.1-2007.
• Certified to ANSI/ARI Standard 390-2003 for SPVU (Single Package Vertical Units).
• Intertek ETL Listed to Standard for Safety Heating and Cooling Equipment ANSI/UL
1995/CSA 22.2 No. 236-05, Third Edition.
• Intertek ETL Listed to Standard for Gas-Fired Central Furnaces ANSI Z21.47-2006, CSA
2.3-2006 Fifth Edition, Addenda A dated 10-01-2007, Addenda B dated 06-01-2008.
• Commercial Product - Not intended for Residential application.
MEA # (Heating): 73-03-E
MEA # (Cooling): 179-03-E