Qw General Information Qw Model Nomenclature - Bard QW Series Installation Instructions Manual

QW SERIES GEOTHERMAL R-410A STAGED CAPACITY GENERAL INFORMATION
QW 3
MODEL NUMBER |
Q-TEC™ Model
CAPACITY |
2 – 2 Ton
3 – 3 Ton
STEP CAPACITY |
4 – 4 Ton
5 – 5 Ton
REVISION |
SPECIALTY
PRODUCTS 
(Non-Standard) |
VENTILATION OPTIONS |
B - Blank-off Plate
V - Commercial Ventilator - Motorized w/Exhaust Spring Return
R - Energy Recovery Ventilator w/Independent Intake & Exhaust Control
S - Energy Recovery Ventilator w/Intelligent Frost Control Option
NOTES
 Insert "D" for dehumidification with hot gas reheat.
Reference 7960-612 for complete details.
 If "X" control option is selected, then thermostat and humidistat, if
applicable, or DDC control system must be field supplied.
l CS9B-THO and -THOC are BACnet w/shielded twisted pair wiring.
m CS9BE-THO and -THOC are BACnet w/shielded twisted pair wiring
and Ethernet port.
 Not available for dehumidification models.
MODEL
QW2S2-A0Z
QW2S2-B0Z
QW2S2-C0Z
QW3S2-A0Z
QW3S2-B0Z
QW3S2-C0Z
QW4S2-A0Z
QW4S2-B0Z
QW4S2-C0Z
QW5S2-A0Z
QW5S2-B0Z
QW5S2-C0Z
 Maximum size of the time delay fuse or circuit breaker for protection of field wiring conductors.
 These "Minimum Circuit Ampacity" values are to be used for sizing the field power conductors. Refer to the National
Electric Code (latest 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 attention to Note 8 of Table 310 regarding Ampacity Adjustment Factors when more
than three conductors are in a raceway.
S 2 A
KW
0Z – OKW
VOLTS & PHASE
A – 230/208/60/1
B – 230/208/60/3
C – 460/60/3
X – None; all pump and water connections field installed, requires field piping to the coaxial
water coil using double o-ring fittings, which must be ordered separately.
P – Threaded water connections
1 – DORFC-1 double o-ring flow center, single Grundfos UP26-99F pump piped to water coil
with 150 PSI reinforced hose
2 – DORFC-2 double o-ring flow center, double Grundfos UP26-99F pump piped to water coil
with 150 PSI reinforced hose
3 – Single Grundfos UPS15-42F pump, isolation valves both ends, piped with copper to double
o-ring fittings back corners of unit
4 – Single Grundfos UP26-64F pump, isolation valves both ends, piped with copper to double
o-ring fittings back corners of unit
5 – Single Grundfos UPS26-99-FC pump, isolation valves both ends, piped with copper to
double o-ring fittings back corners of unit
Electrical Specifications
RATED
VOLTS, Hz
& PHASE
230/208-60-1
230/208-60-3
460-60-3
230/208-60-1
230/208-60-3
460-60-3
230/208-60-1
230/208-60-3
460-60-3
230/208-60-1
230/208-60-3
460-60-3
0Z B X
FILTER OPTIONS
X – 2-Inch Pleated
(MERV8)
COLOR
4 – Buckeye Gray paint
X – Beige paint
V – Platinum w/Slate
Front (Vinyl)
CLIMATE CONTROL OPTIONS (Factory Mounted)
X – 24V Terminal Block Only
D – 8403-060 Electronic/Programmable Thermostat w/Humidity Control
H – 8403-060 Prog. Thermostat w/Humidity Control + 8403-067 CO2 Controller
K – 24V Terminal Block + 8403-067 CO2 Controller Only
1 – CompleteStat CS9B-THO (Temp, Humidity & Occupancy)
2 – CompleteStat CS9B-THOC (THO + CO2)
3 – CompleteStat CS9BE-THO (THO w/Ethernet)
4 – CompleteStat CS9BE-THOC (THO + CO2 w/Ethernet)
5 – 8403-069 Viconics VT7652H5000B w/BACnet
6 – 8403-069 Viconics + 8403-067 CO2 Controller
FACTORY-INSTALLED PUMP & PIPING OPTIONS
TABLE 1
SINGLE CIRCUIT
NO. FIELD MINIMUM
POWER CIRCUIT
CIRCUITS AMPACITY
1 19
1 12
1 7.5
1 25
1 20
1 11
1 33
1 24
1 13
1 41
1 28
1 13
V X C
COIL OPTIONS
C – Copper water
N – Cupronickel

l
l
m
m


 
MAXIMUM EXTERNAL
FUSE OR CIRCUIT
BREAKER
30
20
15
40
30
15
50
35
20
60
40
20
Manual 2100-577C
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