321 Studiosr QW2S User Manual

BARD MANUFACTURING COMPANY, INC.  
QW2S-QW5S Water-to-Air H/P  
Engineering Specification Guide  
1.0 GENERAL  
Furnish and install a self-contained, vertical, floor standing, heat pump to  
be manufactured by Bard Manufacturing Company, Inc. The unit shall be  
approved and Listed by Intertek ETL Listed (ETL US/C). Unit shall be  
factory assembled, pre-charged, pre-wired, tested and ready to operate.  
Unit performance shall be AHRI Certified in accordance with ISO Standard  
13256-1:1998 “Water to Air and Brine to Air Heat Pumps”, which includes  
watt allowance for water pumping. Unit shall include 5 year parts warranty  
covering compressor, parts, and heat exchange coils, subject to terms and  
conditions of Bard Limited Warranty Agreement.  
Unit efficiency shall be specified in terms of EER and COP.  
Manufacturers: Capacities shall be as indicated on drawings and units  
shall be manufactured by Bard Manufacturing Company, Inc. or prior  
approved equal.  
2.0 CONSTRUCTION FEATURES  
2.1 CABINET  
Constructed of 20 gauge pre-painted or vinyl laminated galvanized  
steel. Choices available are either two-tone (vinyl) finish with “slate”  
front panels and “platinum” cabinet for designer appearance, (gray)  
or (beige) painted steel (select one). Vinyl finish is very resistant to  
scratching and marring and is easy to clean. Tamper resistant  
fasteners are provided for access panels. Unit includes built-in  
rollers for each installation into wall sleeve and removal for service,  
if necessary. Front panel is hinged and lockable for filter service and  
access to primary functional electrical controls.  
2.2 INSULATION  
Cabinet is fully insulated with foil covered, high-density fiberglass  
insulation with sealed edge treatment and special sound deadening  
insulation material in the compressor section. All insulation is  
designed to resist mold and mildew growth and facilitate ease of  
cleaning.  
F1915 (2012 04)  
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standard. One shall be used for fresh water applications, the other  
for protected (antifreeze) closed systems. The factory wired switch is  
for fresh water.  
Phase rotation protection and phase failure protection shall be  
standard factory installed features on all equipment with three-phase  
power. If unit is wired incorrectly phase monitor will lock out  
compressor operation and red warning light shall energize. Once  
power wiring is corrected at field power wiring location, a green light  
will energize on phase monitor. If a phase of power is lost, the phase  
monitor will also lock out.  
2.9 SERVICE FEATURES  
The unit shall include a diagnostic light to indicate when service is  
required. System Service shall detect high or low-pressure control  
operation.  
3.0 LOOP MODULE PUMPING SYSTEM  
All models shall be designed with mounting and wiring provisions  
for field installed pump module option, when unit is applied with  
ground loop system.  
4.0 VENTILATION OPTIONS (Select One)  
Q-Tec models are designed to provide optional ventilation packages to  
meet all of your ventilation and indoor air quality requirements. All  
ventilation packages are factory installed.  
4.1 BAROMETRIC FRESH AIR DAMPER  
STANDARD  
The barometric fresh air damper is a standard feature on all models.  
It allows outside ventilation air, up to 25% of the total airflow rating  
of the unit, to be introduced through the air inlet openings and to be  
mixed with the conditioned air. The damper opens during blower  
operation and closes when the blower is off. Adjustable blade stops  
allow different amounts of outside air to be introduced into the  
building and can be easily locked closed if required.  
4.2 BLANK OFF PLATE  
OPTIONAL  
A blank off plate covers the air inlet openings, which restrict any  
outside air from entering the unit. The blank off plate should be  
utilized in applications where outside air is not required to be mixed  
with the conditioned air.  
4.3 COMMERCIAL ROOM VENTILATOR  
OPTIONAL  
F1915 (2012 04)  
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The built-in commercial room ventilator (CRV) is internally mounted  
and allows outside ventilation air, up to 50% of the total air flow  
rating of the unit, to be introduced through the air inlet openings. The  
CRV shall be modular and easily added or removed from the unit  
cabinet. It includes a built-in exhaust air damper. The damper can  
be easily adjusted to control the amount of fresh air supplied into the  
building. The CRV can be controlled by indoor blower operation or  
field controlled based on room occupancy. Unit complies with  
ANSI/ASHRAE Standard 62.1 Ventilation for Acceptable Air Quality.  
Two Models Available: Spring Return on Power Loss or  
Deactivation - Vent Option V  
Power Return (will not close on power loss)  
– Vent Option P  
4.4 ENERGY RECOVERY VENTILATOR  
OPTIONAL  
The Energy Recovery Ventilator (ERV) shall consist of 1 or 2 rotary  
wheels in an insulated cassette frame with seals, drive motor and  
belt. The ERV assembly shall also include intake and exhaust  
blowers. The entire assembly shall easily slide in or out of the unit  
cabinet, allowing for maintenance or replacement. The total energy  
wheel shall be coated with silica gel desiccant, permanently bonded  
without the use of binders or adhesives. The coated segments shall  
be washable with detergent or alkaline coil cleaner and water.  
Desiccant shall not dissolve or deliquesce in the presence of water  
or high humidity. All diameter and perimeter seals shall be provided  
as part of the cassette assembly and shall be factory set. Drive belts  
shall not require external tensioners or adjustment. Cassette wheels  
shall include rims to prevent belts from slipping off wheels. Intake  
and exhaust blowers shall have selections of high, medium or low  
speed and selected independently, to allow for positive  
pressurization if desired. The ERV cassette including parts and  
media shall include 5year warranty subject to terms and conditions  
of Bard’s warranty.  
The ERV thermal performance shall be certified by the manufacturer  
in accordance with ASHRAE Standard 84, Method of Testing Air-to  
Air Heat Exchangers and ARI Standard 1060, Rating for Air-to-Air  
Energy Recovery Ventilation Equipment Cassettes, and shall be  
listed in the ARI Certified Products. Unit complies with  
ANSI/ASHRAE Standard 62.1 Ventilation for Acceptable Air Quality.  
.
5.0 FILTER OPTIONS - (Select One)  
F1915 (2012 04)  
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5.1 2” Fiberglass – Pleated – MERV 8  
6.0 HOT GAS REHEAT- (Factory installed option)  
6.1 The dehumidification circuit incorporates an independent heat  
exchanger coil in the supply air stream in addition to the standard  
evaporator coil. This coil reheats the supply air after it passes over  
the cooling coil, and is sized to nominally match the sensible cooling  
capacity of the evaporator coil.  
Extended run times in  
dehumidification mode can be achieved using waste heat from the  
refrigeration cycle to achieve the reheat process, while at the same  
time large amounts of moisture can be extracted from the passing air  
stream.  
7.0 CABINET COLOR – (Select One)  
7.1 Washable Vinyl- Two-Tone Finish with Slate front and platinum sides  
7.2 Slate Gray  
7.3 Beige  
9.0 CONTROLS – (Select one of the following factory mounted  
control options)  
9.1 None  
9.2 Electronic non-programmable, manual changeover  
9.3 Electronic programmable, auto changeover  
9.4 Electronic programmable, auto changeover, with dehumidistat  
9.5 Electronic non-programmable, auto changeover, with humidistat  
10.0 ACCESSORIES  
10.1 WALL SLEEVE  
Wall sleeve shall be factory supplied and must be constructed of 16  
gauge-galvanized steel, coated with an epoxy primer and baked-on  
polyester enamel paint. It shall be designed to withstand a minimum  
of 1000 hours of salt spray protection when tested per ASTM B117-03  
standard. One sleeve size fits all models. Sleeve only required when  
a ventilation option is selected.  
10.2 Exterior Louver  
Furnish factory louver designed for condenser air and outside air  
F1915 (2012 04)  
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intake and exhaust. Louver shall have a powder coat finish.  
See our color chart for color selections. Louver required with sleeve  
with the use of any ventilation option.  
10.4 AIR DISTRIBUTION – (Select 1)  
10.3.1  
10.3.2  
The Q-Tec shall have a discharge air plenum with  
double deflection register mounted on front.  
The Q-Tec shall have a discharge air plenum with  
double deflection supply register on the front and both  
sides.  
10.3.3  
The Q-Tec shall be ducted with a cabinet extension to  
cover ductwork  
11.0 WARRANTY  
11.1 The Bard product specified shall be free from defects in materials  
and workmanship for a period of 5 years for compressor, and for a  
period of 5 years for all parts. Warranty period shall start from date  
of installation as stated on warranty card; or from date of shipment if  
no warranty card is returned to Bard Manufacturing. Equipment  
must be used under normal conditions and warranty is subject to  
Bard Manufacturing’s standard limited warranty statement.  
12.0 INSTALLATION  
12.1 Installation shall be done in strict adherence to Bard’s Installation  
Instructions.  
F1915 (2012 04)  
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