Roth AHTR Series Specifications

ROTH TerraStar Heat Pumps V-Series
WATER-TO-AIR
Two-Stage, R-410a
Packaged Vertical
Unit Specification Catalog
P/N 2300100903
Call 888-266-7684 US or 800-969-7684 CAN or visit our website at www.roth-america.com
...Your environment is our business...
Table of Contents:
Product Introduction & Unit Features................................................................................................................. 2
Performance Data: AHRI - Single Compressor.................................................................................................... 3
Unit Nomenclature: Vertical Cabinets................................................................................................................. 4
Glossary................................................................................................................................................................. 4
Calculations, Water Flow Selection, & Performance Data Notes....................................................................... 5
Performance Data: RXT036 - Part Load Heating and Cooling........................................................................... 6
Performance Data: RXT036 - Full Load Heating and Cooling............................................................................ 7
Performance Data: RXT048 - Part Load Heating and Cooling........................................................................... 8
Performance Data: RXT048 - Full Load Heating and Cooling............................................................................ 9
Performance Data: RXT060 - Part Load Heating and Cooling.........................................................................10
Performance Data: RXT060 - Full Load Heating and Cooling..........................................................................11
Performance Data: RXT072 - Part Load Heating and Cooling.........................................................................12
Performance Data: RXT072 - Full Load Heating and Cooling..........................................................................13
Correction Factors...............................................................................................................................................14
Physical Data.......................................................................................................................................................15
Dimensional Data...............................................................................................................................................16
Electrical Data.....................................................................................................................................................17
Auxiliary Electric Heater Data............................................................................................................................18
Controls......................................................................................................................................................... 19-26
Blower Data.........................................................................................................................................................24
Wiring Diagrams.................................................................................................................................................25
Engineering Specifications.................................................................................................................................26
Accessories..........................................................................................................................................................27
Warranty..............................................................................................................................................................28
Revision Table.....................................................................................................................................................30
RXT Series Catalog - August 2010
1
Roth
Product Introduction & Unit Features
Unit Features at a Glance
• Non-Ozone Depleting R-410A Refrigerant
• Rugged Multi-Position Powder Coated Steel
Cabinet Construction with Two-Tone Accent Panels
• All Panels Removable for Easy Service
• Coated Air Coils For Extended Life
• Bidirectional Expansion Valve
• ECM Blower Motor
• Corrosion-Proof, Stainless Steel Drain Pan
• ETL Certified to UL & CSA Standards
• AHRI Certified to ISO Standards
• Copper Coaxial Water Heat Exchanger
• Flow Switch Protected
• Fault Retry To Eliminate Nuisance Service Calls
• High Efficiency Copeland UltraTech
Scroll Compressor
• 10 Year Limited Residential Warranty
Roth is turning the geothermal heat pump
industry in a new direction! Roth’s® RXT Series is
the first ever multi-position packaged geothermal
heat pump, providing the ultimate in flexibility for
distributors and dealers. The appliance style, quiet
operation, and ultra high efficiencies will certainly
please homeowners, too. The RXT series was
designed with the dealer and distributor in mind,
but the homeowner will benefit as a result. Some
of the industry-leading features and benefits are
listed below.
• Appliance grade cabinet looks like no other
geothermal heat pump on the market. The twotoned access panels with rounded corners will be
a hit with consumers, but are also near airtight,
increasing indoor air quality.
• Quadruple compressor isolation (high density
steel/foam layer, rubber grommets, and
two layers of insulation) provides the best
combination of sound/vibration absorption
available, making RXT the quietest geothermal
heat pump available.
• Patent-pending design provides a foamed-in
water-to-refrigerant coaxial heat exchanger that
not only prevents condensation, potentially
leading to premature failure, but also includes
a sleeved opening for downflow configuration.
This feature means higher reliability and
less SKUs.
• Rail mounted blower assembly makes
conversion from upflow to downflow a breeze,
and increases serviceability.
• Remote-mount control box provides eye level
access for easier wiring and service, and also
allows the unit to be installed as left hand or
right hand return.
• Stainless steel drain pan and e-coated air coil
increase unit life expectancy.
• Copeland® UltraTech® two-stage compressor
and variable speed ECM fan motor adjust to
heating and cooling requirements, contributing
to unmatched comfort.
• The best available warranty in the industry
insures peace of mind. The ten-year standard
warranty coupled with a lifetime cabinet, coaxial
heat exchanger, and compressor warranty (to
the original owner) is head and shoulders above
any geothermal product on the market today.
• Heat exchanger design and component selection
combine to create extremely high cooling EER
and some of the highest heating capacities and
COPs on the market today.
Roth
Optional features
• Hot Water Generator (Desuperheater)
• Field Installed Internal Electric Heat
• CuproNickel Heat Exchanger
2
RXT Series Catalog - August 2010
Unit Performance:
AHRI Data - Single Compressor Units
Ground Loop Heat Pump
Model
RXT024
RXT036
RXT048
RXT060
RXT072
Capacity
Heating
Btu/hr
Full Load
Cooling
COP
Btu/hr
EER
Future Model
Part Load
Full Load
28,500
4.1
38,900
18.2
Part Load
22,000
4.8
29,000
28.4
Full Load
42,500
4.0
53,500
17.7
Part Load
33,500
4.7
42,400
25.2
Full Load
50,000
3.8
65,500
17.6
Part Load
39,500
4.3
48,600
23.5
Full Load
60,000
3.9
70,000
15.6
Part Load
50,000
4.3
56,500
20.3
Note:
Rated in accordance with ISO Standard 13256-1 which includes Pump Penalties.
Heating capacities based on 68.0°F DB, 59.0°F WB entering air temperature.
Cooling capacities based on 80.6°F DB, 66.2°F WB entering air temperature.
Entering water temperatures Full Load: 32°F heating / 77°F cooling.
Entering water temperatures Part Load: 41°F heating / 68°F cooling.
Ground Water Heat Pump
Model
RXT024
RXT036
RXT048
RXT060
RXT072
Capacity
Heating
Btu/hr
Full Load
Cooling
COP
Btu/hr
EER
Future Models
Part Load
Full Load
34,300
4.5
39,800
22.0
Part Load
23,800
5.1
29,000
32.2
Full Load
53,300
4.6
56,500
21.7
Part Load
37,600
5.1
43,100
28.7
Full Load
61,200
4.5
67,200
20.9
Part Load
43,900
4.8
50,700
27.3
Full Load
73,600
4.4
72,300
18.3
Part Load
54,300
4.6
57,900
23.1
Note:
Rated in accordance with ISO Standard 13256-1 which includes Pump Penalties.
Heating capacities based on 68.0°F DB, 59.0°F WB entering air temperature.
Cooling capacities based on 80.6°F DB, 66.2°F WB entering air temperature.
Entering water temperatures: 50°F heating / 59°F cooling.
RXT Series Catalog - August 2010
3
Roth
Roth Geothermal Heat Pumps
2010 Models - Water-to-Air 2-stage Vertical
Unit Nomenclature:
Rev. 08JUL2010
1
2
3
456
7
8
9
10
11 12 13 14 15
R X T 048 A 1 1 M M 1 C SS
Brand
R = Roth
Other Options
SS = Standard
Type
X = Multi-position Vertical
Heat Exchanger Options
C = Copper coax (with e-coated air coil)
N = CuNi coax (with e-coated air coil)
Stages
T = Two-stage
Blower Options
1 = ECM
Unit Capacity
Nominal MBTUH
024,036,048,060,072
Discharge Air Configuration
M = Multi-position
Series
A = Current Revision
Return Options
M = Multi-position
Voltage
1 = 208/230 Volts, 60 Hz, 1ph RESIDENTIAL
Hot Water Options
0 = No Desuperheater
1 = With Desuperheater & int. pump
Glossary
Glossary of Terms
CFM = Airflow, Cubic Feet/Minute
HR = Total Heat Of Rejection, Btu/hr
COP = Coefficient of Performance = BTU Output / BTU Input
KW = Total Power Unit Input, Kilowatts
DH = Desuperheater Capacity, Btu/hr
LAT = Leaving Air Temperature, Fahrenheit
EAT = Entering Air Temperature, Fahrenheit (Dry Bulb/Wet Bulb)
LC = Latent Cooling Capacity, Btu/hr
EER = Energy Efficiency Ratio = BTU output/Watts input
SC = Sensible Cooling Capacity, Btu/hr
EWT = Entering Source Water Temperature, Fahrenheit
LWT = Leaving Source Water Temperature, Fahrenheit
ELT = Entering Load Water Temperature, Fahrenheit
LLT = Leaving Load Water Temperature, Fahrenheit
GPM = Water Flow, Gallons Per Minute
TC = Total Cooling Capacity, Btu/hr
HC = Total Heating Capacity, Btu/hr
WPD = Water Pressure Drop, PSI & Feet of Water
HE = Total Heat Of Extraction, Btu/hr
Roth
4
RXT Series Catalog - August 2010
Calculations, Water Flow Selection, & Performance Data Notes
Heating & Cooling Calculations
Heating
Cooling
LAT = EAT +
HC
CFM x 1.08
LAT (DB) = EAT (DB) SC
CFM x 1.08
LWT = EWT HE
GPM x 500
LWT = EWT +
HR
GPM x 500
LC = TC - SC
Water Flow Selection
Proper flow rate is crucial for reliable operation of geothermal heat
pumps. The performance data shows three flow rates for each entering
water temperature (EWT column). The general “rule of thumb” when
selecting flow rates is the following:
Calculate the temperature difference (TD) based upon the HE and GPM
of the model (step 4).
TD = HE / (GPM x 500).
Calculate the LWT (step 6).
LWT = EWT - TD.
Top flow rate: Open loop systems (1.5 to 2.0 gpm per ton)
Middle flow rate: Minimum closed loop system flow rate
(2.25 to 2.50 gpm/ton)
Bottom flow rate: Nominal (optimum) closed loop system flow rate
(3.0 gpm/ton)
If the LWT is below 35-38°F, there is potential for freezing conditions if
the flow rate or water temperature is less than ideal conditions, and the
flow rate must be increased.
Example 1:
EWT = 50°F.
Model RXT048, high capacity. Flow rate = 6 GPM.
Air Flow = 1500 CFM. HE = 36,700 Btuh.
TD = 36,700 / (6 x 500) = 12.2°F
LWT = 50 - 12.2 = 37.8°F
Since the water flow is leaving at approximately 38°F, the flow rate
is acceptable.
Although the “rule of thumb” is adequate in most areas of North
America, it is important to consider the application type before applying
this “rule of thumb.” Antifreeze is generally required for all closed loop
(geothermal) applications. Extreme Southern U.S. locations are the
only exception. Open loop (well water) systems cannot use antifreeze,
and must have enough flow rate in order to avoid freezing conditions at
the Leaving Source Water Temperature (LWT) connection.
Calculations must be made for all systems without antifreeze to determine if the top flow rate is adequate to prevent LWT at or near freezing
conditions. The following steps should taken in making this calculation:
Example 2:
EWT = 40°F.
Model RXT048, high capacity. Flow rate = 6 GPM.
Air Flow = 1500 CFM. HE = 36,700 Btuh.
TD = 36,700 / (6 x 500) = 12.2°F
LWT = 40 - 12.2 = 27.8°F
Water flow rate must be increased to avoid freezing.
Determine minimum EWT based upon your geographical area.
Go to the performance data table for the heat pump model selected and
look up the the Heat of Extraction (HE) at the “rule of thumb” water flow
rate (GPM) and at the design Entering Air Temperature (EAT).
Performance Data Notes
1. Capacity data includes water pumping watts and is based upon 15% (by volume) propylene glycol antifreeze solution.
2. Desuperheater capacity is based upon 0.4 GPM Flow per nominal ton at 90°F entering hot water temperature.
3. Interpolation between above categories is permissible; extrapolation is not.
4. See Flow Rate Selection above for proper application.
RXT Series Catalog - August 2010
5
Roth
RXT036 Performance Data: Part Load
3.0 Ton, 1050 CFM Heating / 1050 CFM Cooling
Heating
WPD
PSI
FT
EWT
°F
Flow
GPM
25
9.0
4.4
10.2
4.5
1.0
2.3
7.0
2.5
5.8
9.0
4.2
9.7
4.5
1.0
2.3
7.0
2.3
5.3
9.0
3.9
9.0
4.5
0.9
2.1
7.0
2.2
5.1
9.0
3.6
8.3
4.5
0.8
1.8
7.0
2.0
4.6
9.0
3.3
7.6
4.5
0.8
1.8
7.0
1.9
4.4
9.0
3.1
7.2
4.5
0.7
1.6
7.0
1.8
4.2
9.0
2.9
6.7
4.5
0.7
1.6
7.0
1.7
3.9
9.0
2.8
6.5
4.5
0.6
1.4
7.0
1.6
3.7
9.0
2.6
6.0
4.5
0.6
1.4
7.0
1.5
3.5
9.0
2.4
5.5
30
40
50
60
70
80
90
100
Airow
CFM
850
1050
850
1050
850
1050
850
1050
850
1050
850
1050
850
1050
850
1050
850
1050
850
1050
850
1050
850
1050
850
1050
850
1050
850
1050
850
1050
850
1050
850
1050
850
1050
850
1050
850
1050
850
1050
HC
HE
MBtuh MBtuh
17.3
17.5
17.9
18.2
18.6
18.9
18.7
19.0
20.7
21.0
21.5
21.8
21.6
21.9
23.5
23.9
24.4
24.8
24.5
24.9
26.3
26.7
27.3
27.7
27.4
27.8
29.0
29.4
30.0
30.5
30.2
30.6
31.5
32.0
32.7
33.2
32.8
33.3
33.9
34.4
35.1
35.7
35.3
35.8
12.0
12.3
12.6
13.0
13.3
13.7
13.4
13.8
15.3
15.8
16.1
16.6
16.2
16.7
18.1
18.6
18.9
19.5
19.0
19.6
20.8
21.4
21.8
22.3
21.9
22.5
23.4
24.0
24.4
25.1
24.6
25.2
25.9
26.5
27.1
27.7
27.2
27.8
28.2
28.9
29.4
30.2
29.6
30.3
LAT
°F
88.8
85.4
89.5
86.0
90.3
86.7
90.4
86.8
92.5
88.5
93.4
89.2
93.5
89.3
95.6
91.1
96.6
91.9
96.7
92.0
98.6
93.5
99.7
94.4
99.8
94.5
101.6
95.9
102.7
96.9
102.9
97.0
104.3
98.2
105.6
99.3
105.7
99.4
106.9
100.3
108.2
101.5
108.5
101.6
kW
1.55
1.51
1.56
1.52
1.56
1.52
1.56
1.52
1.57
1.53
1.58
1.53
1.57
1.53
1.59
1.54
1.60
1.56
1.60
1.56
1.61
1.56
1.61
1.57
1.61
1.56
1.63
1.58
1.63
1.59
1.63
1.58
1.64
1.60
1.65
1.60
1.64
1.60
1.66
1.61
1.66
1.62
1.66
1.61
COP
W/W
DH
MBtuh
3.27
3.40
3.36
3.51
3.49
3.64
3.51
3.66
3.86
4.02
3.99
4.17
4.03
4.19
4.33
4.55
4.47
4.66
4.49
4.68
4.79
5.01
4.97
5.17
4.99
5.22
5.21
5.45
5.39
5.62
5.43
5.67
5.63
5.86
5.81
6.08
5.86
6.10
5.98
6.26
6.20
6.46
6.23
6.52
2.3
2.3
2.4
2.4
2.5
2.5
2.5
2.5
2.7
2.8
2.9
2.9
2.9
3.0
3.0
3.1
3.2
3.3
3.2
3.3
3.5
3.6
3.6
3.6
3.6
3.8
3.8
3.9
3.9
4.0
3.9
4.0
4.2
4.2
4.3
4.3
4.4
4.5
4.4
4.5
4.6
4.7
4.7
4.8
Operation Not Recommended
110
Airow
CFM
TC
SC
MBtuh MBtuh
Cooling
HR
MBtuh
S/T
kW
EER
DH
Btuh/W MBtuh
Operation Not Recommended
850
1050
850
1050
850
1050
850
1050
850
1050
850
1050
850
1050
850
1050
850
1050
850
1050
850
1050
850
1050
850
1050
850
1050
850
1050
850
1050
850
1050
850
1050
850
1050
850
1050
850
1050
29.4
30.3
29.9
30.7
30.0
30.9
28.2
29.1
28.7
29.5
28.8
29.6
26.9
27.7
27.3
28.2
27.5
28.3
25.6
26.3
25.9
26.7
26.1
26.8
24.1
24.8
24.4
25.1
24.5
25.3
22.5
23.1
22.8
23.5
22.9
23.6
20.8
21.4
21.1
21.7
21.2
21.8
20.6
22.0
20.8
22.1
20.6
22.0
19.9
21.2
20.1
21.4
19.9
21.2
19.3
20.6
19.5
20.7
19.3
20.6
18.7
19.9
18.9
20.1
18.7
19.9
18.1
19.3
18.2
19.4
18.1
19.3
17.4
18.6
17.6
18.7
17.4
18.6
16.7
17.7
16.8
17.9
16.6
17.7
0.70
0.73
0.70
0.72
0.69
0.71
0.71
0.73
0.70
0.73
0.69
0.72
0.72
0.74
0.71
0.73
0.70
0.73
0.73
0.76
0.73
0.75
0.72
0.74
0.75
0.78
0.75
0.77
0.74
0.76
0.77
0.81
0.77
0.80
0.76
0.79
0.80
0.83
0.80
0.82
0.78
0.81
32.8
33.9
33.1
34.1
33.2
34.2
32.1
33.2
32.4
33.3
32.4
33.4
31.3
32.3
31.4
32.5
31.6
32.6
30.6
31.5
30.6
31.6
30.7
31.6
29.8
30.8
29.8
30.7
29.8
30.8
29.0
29.9
28.9
29.9
28.9
29.9
28.1
29.1
28.0
29.0
28.0
29.0
1.01
1.06
0.95
1.00
0.93
0.98
1.13
1.19
1.07
1.12
1.05
1.10
1.28
1.35
1.21
1.27
1.19
1.25
1.46
1.53
1.38
1.45
1.35
1.42
1.66
1.75
1.57
1.65
1.54
1.62
1.89
1.99
1.79
1.88
1.75
1.84
2.15
2.26
2.03
2.14
1.99
2.10
29.1
28.6
31.5
30.7
32.3
31.5
25.0
24.5
26.8
26.3
27.4
26.9
21.0
20.5
22.6
22.2
23.1
22.6
17.5
17.2
18.8
18.4
19.3
18.9
14.5
14.2
15.5
15.2
15.9
15.6
11.9
11.6
12.7
12.5
13.1
12.8
9.7
9.5
10.4
10.1
10.7
10.4
2.4
2.6
2.3
2.4
2.2
2.3
3.0
3.2
2.7
2.9
2.6
2.8
3.5
3.7
3.2
3.4
3.1
3.3
3.9
4.2
3.7
3.9
3.6
3.8
4.4
4.7
4.1
4.4
3.9
4.2
4.9
5.2
4.6
4.9
4.4
4.7
5.4
5.7
5.1
5.4
4.9
5.2
Heating data based on 70F EAT; Cooling data based on 80/67F EAT. See Correction Factors on page 14 for different conditions.
Roth
6
RXT Series Catalog - August 2010
RXT036 Performance Data: Full Load
3.0 Ton, 1300 CFM Heating / 1300 CFM Cooling
Heating
WPD
PSI
FT
EWT
°F
Flow
GPM
25
9.0
4.4
10.2
4.5
1.0
2.3
7.0
2.5
5.8
9.0
4.2
9.7
4.5
1.0
2.3
7.0
2.3
5.3
9.0
3.9
9.0
4.5
0.9
2.1
7.0
2.2
5.1
9.0
3.6
8.3
4.5
0.8
1.8
7.0
2.0
4.6
9.0
3.3
7.6
4.5
0.8
1.8
7.0
1.9
4.4
9.0
3.1
7.2
4.5
0.7
1.6
7.0
1.8
4.2
9.0
2.9
6.7
4.5
0.7
1.6
7.0
1.7
3.9
9.0
2.8
6.5
4.5
0.6
1.4
7.0
1.6
3.7
9.0
2.6
6.0
4.5
0.6
1.4
7.0
1.5
3.5
9.0
2.4
5.5
30
40
50
60
70
80
90
100
Airow
CFM
1050
1300
1050
1300
1050
1300
1050
1300
1050
1300
1050
1300
1050
1300
1050
1300
1050
1300
1050
1300
1050
1300
1050
1300
1050
1300
1050
1300
1050
1300
1050
1300
1050
1300
1050
1300
1050
1300
1050
1300
1050
1300
1050
1300
HC
HE
MBtuh MBtuh
25.6
18.3
27.1
19.6
24.5
17.4
26.0
18.6
27.0
19.6
28.6
21.0
27.5
20.0
29.1
21.4
27.8
20.4
29.5
21.8
30.7
22.9
32.5
24.5
31.3
23.6
33.2
25.2
31.2
23.5
33.1
25.1
34.3
26.3
36.4
28.1
35.0
26.8
37.1
28.7
34.5
26.4
36.6
28.2
38.0
29.5
40.3
31.6
38.8
30.2
41.1
32.3
37.8
29.3
40.1
31.3
41.7
32.8
44.2
35.1
42.5
33.5
45.0
35.8
41.2
32.2
43.7
34.5
45.4
36.0
48.1
38.5
46.2
36.7
49.0
39.3
44.6
35.1
47.3
37.6
49.2
39.3
52.1
42.0
50.1
40.2
53.1
43.0
LAT
°F
92.5
89.3
91.6
88.5
93.8
90.4
94.2
90.7
94.5
91.0
97.0
93.1
97.6
93.6
97.5
93.6
100.3
95.9
100.9
96.4
100.4
96.1
103.5
98.7
104.2
99.3
103.4
98.6
106.8
101.5
107.4
102.1
106.4
101.1
110.0
104.3
110.8
104.9
109.3
103.7
113.3
107.1
114.2
107.8
kW
2.25
2.21
2.20
2.16
2.28
2.23
2.29
2.25
2.29
2.25
2.37
2.33
2.39
2.35
2.40
2.35
2.48
2.43
2.50
2.45
2.51
2.46
2.59
2.54
2.61
2.57
2.63
2.58
2.72
2.67
2.74
2.69
2.76
2.71
2.85
2.80
2.88
2.83
2.91
2.85
3.00
2.95
3.03
2.97
COP
W/W
3.33
3.59
3.27
3.53
3.47
3.76
3.51
3.79
3.56
3.84
3.79
4.09
3.84
4.14
3.81
4.13
4.06
4.39
4.10
4.44
4.03
4.36
4.30
4.65
4.35
4.69
4.21
4.55
4.49
4.85
4.54
4.90
4.38
4.72
4.67
5.03
4.70
5.07
4.49
4.86
4.80
5.17
4.84
5.24
Operation Not Recommended
110
DH
MBtuh
3.6
3.6
3.5
3.5
3.8
3.8
3.8
3.8
4.0
4.1
4.3
4.3
4.4
4.5
4.4
4.4
4.8
4.8
4.9
4.9
4.9
5.1
5.3
5.4
5.4
5.4
5.3
5.3
5.8
5.8
5.9
5.9
5.8
6.0
6.4
6.4
6.5
6.4
6.2
6.2
6.9
6.9
7.0
7.0
Airow
CFM
TC
SC
MBtuh MBtuh
Cooling
HR
S/T
MBtuh
kW
EER
DH
Btuh/W MBtuh
Operation Not Recommended
1050
1300
1050
1300
1050
1300
1050
1300
1050
1300
1050
1300
1050
1300
1050
1300
1050
1300
1050
1300
1050
1300
1050
1300
1050
1300
1050
1300
1050
1300
1050
1300
1050
1300
1050
1300
1050
1300
1050
1300
1050
1300
40.7
41.7
41.4
42.4
41.6
42.6
39.3
40.3
40.0
41.0
40.2
41.2
37.8
38.8
38.5
39.4
38.7
39.6
36.2
37.1
36.8
37.7
36.9
37.9
34.2
35.0
34.7
35.6
34.9
35.8
31.8
32.6
32.3
33.1
32.5
33.3
28.9
29.7
29.4
30.2
29.6
30.3
26.7
29.2
26.7
29.2
26.8
29.3
26.2
28.6
26.2
28.6
26.2
28.7
25.7
28.1
25.7
28.1
25.8
28.2
25.1
27.4
25.1
27.5
25.2
27.5
24.4
26.6
24.4
26.6
24.4
26.7
23.3
25.4
23.3
25.4
23.4
25.5
21.7
23.8
21.8
23.8
21.8
23.8
0.66
0.70
0.64
0.69
0.64
0.69
0.67
0.71
0.66
0.70
0.65
0.70
0.68
0.72
0.67
0.71
0.67
0.71
0.69
0.74
0.68
0.73
0.68
0.73
0.71
0.76
0.70
0.75
0.70
0.75
0.73
0.78
0.72
0.77
0.72
0.77
0.75
0.80
0.74
0.79
0.74
0.79
47.2
48.6
47.6
49.1
47.6
49.0
46.3
47.8
46.8
48.2
46.8
48.2
45.4
47.0
45.9
47.3
45.8
47.2
44.6
46.0
44.9
46.3
44.7
46.2
43.4
44.8
43.6
45.1
43.5
44.9
42.0
43.5
42.1
43.6
42.0
43.4
40.3
41.8
40.4
41.9
40.2
41.6
1.89
2.02
1.82
1.95
1.76
1.88
2.06
2.20
1.99
2.12
1.92
2.05
2.24
2.39
2.16
2.31
2.09
2.23
2.45
2.62
2.36
2.52
2.28
2.44
2.69
2.88
2.60
2.77
2.51
2.68
2.98
3.19
2.88
3.07
2.78
2.97
3.33
3.55
3.21
3.43
3.10
3.31
21.5
20.6
22.7
21.7
23.6
22.7
19.1
18.3
20.1
19.3
20.9
20.1
16.9
16.2
17.8
17.1
18.5
17.8
14.8
14.2
15.6
15.0
16.2
15.5
12.7
12.2
13.3
12.9
13.9
13.4
10.7
10.2
11.2
10.8
11.7
11.2
8.7
8.4
9.2
8.8
9.5
9.2
3.2
3.5
3.0
3.3
2.8
3.1
3.9
4.3
3.7
4.0
3.5
3.8
4.6
5.0
4.3
4.7
4.1
4.5
5.2
5.7
4.9
5.4
4.8
5.2
5.9
6.4
5.5
6.0
5.4
5.9
6.4
7.0
6.1
6.7
5.9
6.4
6.9
7.6
6.7
7.3
6.3
6.9
Heating data based on 70F EAT; Cooling data based on 80/67F EAT. See Correction Factors on page 14 for different conditions.
RXT Series Catalog - August 2010
7
Roth
RXT048 Performance Data: Part Load
4.0 Ton, 1400 CFM Heating / 1400 CFM Cooling
WPD
PSI
FT
EWT
°F
Flow
GPM
25
9.0
4.8
11.1
4.5
1.1
2.5
7.0
2.8
6.5
9.0
4.6
10.6
4.5
1.1
2.5
7.0
2.6
6.0
9.0
4.2
9.7
4.5
1.0
2.3
7.0
2.4
5.5
9.0
4.0
9.2
4.5
0.9
2.1
7.0
2.3
5.3
9.0
3.7
8.5
4.5
0.9
2.1
7.0
2.1
4.9
9.0
3.5
8.1
4.5
0.8
1.8
7.0
2.0
4.6
9.0
3.4
7.9
4.5
0.8
1.8
7.0
2.0
4.6
9.0
3.3
7.6
4.5
0.8
1.8
7.0
1.9
4.4
9.0
3.2
7.4
4.5
0.8
1.8
7.0
1.9
4.4
9.0
3.1
7.2
30
40
50
60
70
80
90
100
Airow
CFM
HC
HE
MBtuh MBtuh
Heating
LAT
°F
1150
1400
1150
1400
1150
1400
1150
1400
1150
1400
1150
1400
1150
1400
23.1
26.1
23.5
26.5
24.9
28.0
25.5
28.7
27.7
31.2
29.3
33.0
30.0
33.8
16.0
18.8
16.3
19.2
17.7
20.6
18.3
21.3
20.4
23.7
21.9
25.4
22.6
26.2
88.6
87.3
88.9
87.5
90.0
88.5
90.5
89.0
92.3
90.6
93.6
91.8
94.2
92.4
kW
2.09
2.14
2.10
2.15
2.12
2.17
2.12
2.17
2.15
2.20
2.17
2.22
2.18
2.22
1150
1400
1150
1400
1150
1400
1150
1400
1150
1400
1150
1400
1150
1400
1150
1400
1150
1400
1150
1400
1150
1400
1150
1400
1150
1400
1150
1400
1150
1400
31.7
35.7
33.5
37.8
34.3
38.7
35.6
40.1
37.6
42.4
38.5
43.4
39.4
44.4
41.7
47.0
42.7
48.1
43.2
48.7
45.7
51.5
46.8
52.8
47.0
53.1
49.8
56.1
51.0
57.5
24.3
28.1
26.0
30.1
26.7
30.9
28.0
32.3
29.9
34.5
30.8
35.5
31.6
36.4
33.9
39.0
34.9
40.1
35.3
40.6
37.7
43.3
38.8
44.6
38.9
44.8
41.6
47.7
42.8
49.1
95.5
93.6
97.0
95.0
97.6
95.6
98.7
96.5
100.3
98.0
101.0
98.7
101.7
99.4
103.6
101.1
104.4
101.8
104.8
102.2
106.8
104.1
107.7
104.9
107.8
105.1
110.1
107.1
111.1
108.0
2.17
2.22
2.21
2.26
2.23
2.28
2.24
2.29
2.26
2.31
2.26
2.31
2.28
2.33
2.30
2.35
2.30
2.35
2.32
2.37
2.34
2.39
2.35
2.40
2.37
2.43
2.39
2.45
2.40
2.45
COP
W/W
DH
MBtuh
3.24
3.57
3.28
3.61
3.44
3.78
3.52
3.88
3.77
4.16
3.96
4.36
4.03
4.46
3.0
3.4
3.1
3.5
3.3
3.7
3.4
3.8
3.9
4.0
4.1
4.2
4.2
4.5
4.28
4.71
4.44
4.90
4.51
4.97
4.66
5.13
4.87
5.38
4.99
5.50
5.06
5.58
5.31
5.86
5.44
6.00
5.46
6.02
5.72
6.31
5.84
6.45
5.81
6.40
6.11
6.71
6.23
6.88
4.2
4.7
4.4
5.0
4.5
5.1
5.0
5.2
5.3
5.4
5.4
5.7
5.2
5.9
5.5
6.2
5.7
6.4
6.1
6.3
6.4
6.6
6.6
6.9
6.2
7.0
6.6
7.4
6.7
7.6
Operation Not Recommended
110
Airow
CFM
TC
SC
MBtuh MBtuh
Cooling
HR
MBtuh
S/T
kW
EER
DH
Btuh/W MBtuh
Operation Not Recommended
1150
1400
1150
1400
1150
1400
1150
1400
1150
1400
1150
1400
1150
1400
1150
1400
1150
1400
1150
1400
1150
1400
1150
1400
1150
1400
1150
1400
1150
1400
39.9
40.4
40.5
41.0
40.4
40.8
39.6
40.1
40.2
40.7
40.1
40.6
38.5
38.9
39.0
39.5
38.9
39.4
36.7
37.1
37.2
37.6
37.1
37.5
34.5
34.9
35.0
35.4
34.9
35.3
28.1
30.8
28.4
31.1
28.3
31.0
27.9
30.6
28.2
30.9
28.1
30.8
27.3
29.9
27.6
30.2
27.5
30.1
26.5
29.0
26.8
29.3
26.7
29.2
25.5
27.9
25.8
28.2
25.7
28.1
0.70
0.76
0.70
0.76
0.70
0.76
0.70
0.76
0.70
0.76
0.70
0.76
0.71
0.77
0.71
0.76
0.71
0.76
0.72
0.78
0.72
0.78
0.72
0.78
0.74
0.80
0.74
0.80
0.74
0.80
45.2
45.9
45.4
46.1
45.2
45.8
45.5
46.2
45.7
46.4
45.5
46.2
45.1
45.8
45.1
45.9
44.9
45.6
44.1
44.8
44.1
44.8
43.9
44.5
42.9
43.6
42.8
43.5
42.5
43.2
1.54
1.60
1.44
1.49
1.41
1.46
1.73
1.79
1.61
1.67
1.58
1.64
1.94
2.01
1.80
1.87
1.77
1.83
2.17
2.26
2.02
2.10
1.99
2.06
2.45
2.54
2.28
2.36
2.24
2.32
25.9
25.3
28.1
27.5
28.7
27.9
22.9
22.4
25.0
24.4
25.4
24.8
19.8
19.4
21.7
21.1
22.0
21.5
16.9
16.4
18.4
17.9
18.6
18.2
14.1
13.7
15.4
15.0
15.6
15.2
3.3
3.6
3.2
3.5
3.0
3.3
4.1
4.5
3.9
4.3
3.7
4.1
4.8
5.3
4.6
5.0
4.4
4.8
5.6
6.1
5.2
5.7
5.0
5.5
6.2
6.8
5.9
6.4
5.7
6.2
1150
1400
1150
1400
1150
1400
1150
1400
1150
1400
1150
1400
32.2
32.6
32.6
33.0
32.6
32.9
30.0
30.3
30.4
30.8
30.3
30.7
24.4
26.7
24.7
27.0
24.6
26.9
23.3
25.5
23.5
25.8
23.5
25.7
0.76
0.82
0.76
0.82
0.75
0.82
0.78
0.84
0.77
0.84
0.78
0.84
41.7
42.4
41.4
42.1
41.3
41.9
40.8
41.5
40.4
41.2
40.1
40.9
2.78
2.88
2.58
2.68
2.54
2.63
3.16
3.27
2.93
3.04
2.88
2.99
11.6
11.3
12.6
12.3
12.8
12.5
9.5
9.3
10.4
10.1
10.5
10.3
6.9
7.5
6.6
7.2
6.3
6.9
7.4
8.1
7.2
7.9
6.9
7.5
Heating data based on 70F EAT; Cooling data based on 80/67F EAT. See Correction Factors on page 14 for different conditions.
Roth
8
RXT Series Catalog - August 2010
RXT048 Performance Data: Full Load
4.0 Ton, 1650 CFM Heating / 1700 CFM Cooling
WPD
EWT
Flow
°F
GPM
PSI
FT
25
12.0
8.5
19.6
6.0
2.0
4.6
9.0
4.6
10.6
12.0
8.2
18.9
6.0
1.9
4.4
9.0
4.2
9.7
12.0
7.6
17.6
6.0
1.8
4.2
9.0
4.0
9.2
12.0
7.0
16.2
6.0
1.7
3.9
9.0
3.7
8.5
12.0
6.6
15.2
6.0
1.6
3.7
9.0
3.5
8.1
12.0
6.3
14.6
6.0
1.5
3.5
9.0
3.4
7.9
12.0
6.0
13.9
6.0
1.4
3.2
9.0
3.3
7.6
12.0
5.8
13.4
6.0
1.4
3.2
9.0
3.2
7.4
12.0
5.6
12.9
6.0
1.4
3.2
9.0
3.1
7.2
12.0
5.5
12.7
30
40
50
60
70
80
90
100
Airow
CFM
1500
1650
1500
1650
1500
1650
1500
1650
1500
1650
1500
1650
1500
1650
1500
1650
1500
1650
1500
1650
1500
1650
1500
1650
1500
1650
1500
1650
1500
1650
1500
1650
1500
1650
1500
1650
1500
1650
1500
1650
1500
1650
1500
1650
HC
HE
MBtuh MBtuh
35.2
25.2
35.9
25.8
35.1
25.2
35.9
25.9
36.6
26.6
37.4
27.3
38.5
28.3
39.4
29.1
41.4
31.1
42.3
31.9
43.2
32.7
44.1
33.5
45.5
34.8
46.4
35.5
47.6
36.7
48.7
37.7
49.7
38.6
50.8
39.6
52.3
41.0
53.4
42.0
53.5
42.0
54.6
43.0
55.8
44.1
57.0
45.2
58.7
46.8
59.9
47.9
58.5
46.4
59.8
47.6
61.1
48.8
62.4
50.0
64.2
51.7
65.6
52.9
62.5
49.7
63.8
50.9
65.2
52.2
66.6
53.5
68.6
55.4
70.0
56.6
65.0
51.5
66.3
52.6
67.8
54.0
69.2
55.3
71.3
57.3
72.8
58.6
Heating
LAT
°F
91.7
90.1
91.7
90.1
92.6
91.0
93.8
92.1
95.6
93.7
96.7
94.7
98.1
96.0
99.4
97.3
100.7
98.5
102.3
100.0
103.0
100.6
104.4
102.0
106.2
103.6
106.1
103.6
107.7
105.0
109.6
106.8
108.6
105.8
110.2
107.4
112.3
109.3
110.1
107.2
111.9
108.8
114.0
110.9
kW
2.93
2.96
2.89
2.92
2.94
2.97
2.99
3.03
3.03
3.06
3.08
3.12
3.14
3.18
3.19
3.22
3.24
3.28
3.30
3.34
3.36
3.40
3.42
3.45
3.48
3.52
3.54
3.58
3.61
3.64
3.67
3.71
3.74
3.78
3.81
3.85
3.88
3.92
3.96
4.00
4.03
4.07
4.10
4.15
COP
DH
Airow
W/W
3.52
3.55
3.56
3.60
3.65
3.69
3.77
3.81
4.00
4.05
4.11
4.14
4.25
4.28
4.37
4.43
4.49
4.54
4.64
4.68
4.67
4.71
4.78
4.84
4.94
4.99
4.84
4.89
4.96
5.02
5.13
5.18
4.90
4.95
5.01
5.07
5.18
5.23
4.81
4.86
4.93
4.98
5.10
5.14
MBtuh
4.6
4.7
4.6
4.7
4.9
5.0
5.0
5.1
5.5
5.7
5.8
5.9
6.1
6.3
6.3
6.4
6.6
6.7
7.0
7.1
7.1
7.3
7.4
7.6
7.8
7.9
7.7
7.9
8.0
8.2
8.4
8.6
8.3
8.4
8.6
8.8
9.0
9.0
8.6
8.8
9.0
9.2
9.4
9.6
CFM
Operation Not Recommended
110
TC
SC
MBtuh MBtuh
Cooling
HR
S/T
MBtuh
EER
kW
DH
Btuh/W MBtuh
Operation Not Recommended
1550
1700
1550
1700
1550
1700
1550
1700
1550
1700
1550
1700
1550
1700
1550
1700
1550
1700
1550
1700
1550
1700
1550
1700
1550
1700
1550
1700
1550
1700
1550
1700
1550
1700
1550
1700
1550
1700
1550
1700
1550
1700
54.8
55.5
55.4
56.0
55.9
56.6
52.9
53.5
53.4
54.1
53.9
54.6
50.7
51.3
51.2
51.8
51.7
52.3
48.3
48.9
48.8
49.4
49.2
49.8
45.6
46.2
46.1
46.7
46.5
47.1
42.8
43.3
43.2
43.8
43.6
44.2
39.7
40.2
40.1
40.6
40.5
41.0
38.3
40.1
38.3
40.1
38.5
40.3
37.5
39.2
37.4
39.2
37.7
39.4
36.4
38.1
36.4
38.1
36.6
38.3
35.2
36.8
35.2
36.8
35.4
37.0
33.8
35.3
33.7
35.3
33.9
35.5
32.2
33.7
32.1
33.6
32.3
33.8
30.4
31.8
30.4
31.8
30.6
32.0
0.70
0.72
0.69
0.72
0.69
0.71
0.71
0.73
0.70
0.72
0.70
0.72
0.72
0.74
0.71
0.74
0.71
0.73
0.73
0.75
0.72
0.74
0.72
0.74
0.74
0.76
0.73
0.76
0.73
0.75
0.75
0.78
0.74
0.77
0.74
0.76
0.77
0.79
0.76
0.78
0.76
0.78
63.6
64.6
63.9
64.7
64.1
65.1
62.5
63.4
62.5
63.5
62.7
63.7
61.0
61.9
61.0
61.9
61.2
62.2
59.4
60.4
59.4
60.4
59.5
60.4
57.7
58.7
57.7
58.6
57.7
58.7
56.1
57.0
55.9
56.9
55.9
56.9
54.4
55.4
54.2
55.1
54.2
55.1
2.59
2.68
2.48
2.56
2.40
2.48
2.80
2.89
2.67
2.76
2.59
2.68
3.01
3.11
2.88
2.97
2.79
2.89
3.26
3.37
3.11
3.21
3.02
3.12
3.55
3.67
3.39
3.50
3.29
3.40
3.89
4.02
3.72
3.84
3.61
3.73
4.31
4.45
4.12
4.25
4.00
4.13
21.2
20.7
22.3
21.9
23.3
22.8
18.9
18.5
20.0
19.6
20.8
20.4
16.8
16.5
17.8
17.4
18.5
18.1
14.8
14.5
15.7
15.4
16.3
16.0
12.8
12.6
13.6
13.3
14.1
13.9
11.0
10.8
11.6
11.4
12.1
11.8
9.2
9.0
9.7
9.6
10.1
9.9
4.3
4.5
4.3
4.5
4.1
4.3
5.4
5.6
5.2
5.5
5.0
5.2
6.4
6.7
6.1
6.4
5.8
6.1
7.3
7.6
6.9
7.2
6.7
7.0
8.1
8.5
7.6
8.0
7.4
7.8
8.9
9.3
8.4
8.8
8.3
8.7
9.7
10.1
9.2
9.6
9.2
9.6
Heating data based on 70F EAT; Cooling data based on 80/67F EAT. See Correction Factors on page 14 for different conditions.
RXT Series Catalog - August 2010
9
Roth
RXT060 Performance Data: Part Load
5.0 Ton, 1500 CFM Heating / 1550 CFM Cooling
EWT
°F
Flow
GPM
WPD
PSI
FT
25
12.0
5.6
12.9
6.0
1.3
3.0
10.0
3.7
8.5
12.0
5.4
12.5
6.0
1.2
2.8
10.0
3.4
7.9
12.0
4.9
11.3
6.0
1.1
2.5
10.0
3.2
7.4
12.0
4.6
10.6
6.0
1.1
2.5
10.0
3.0
6.9
12.0
4.3
9.9
6.0
1.0
2.3
10.0
2.8
6.5
12.0
4.1
9.5
6.0
1.0
2.3
10.0
2.7
6.2
12.0
3.9
9.0
6.0
0.9
2.1
10.0
2.6
6.0
12.0
3.8
8.8
6.0
0.9
2.1
10.0
2.5
5.8
12.0
3.7
8.5
6.0
0.9
2.1
10.0
2.5
5.8
12.0
3.6
8.3
30
40
50
60
70
80
90
100
Airow
CFM
HC
HE
MBtuh MBtuh
Heating
LAT
°F
1350
1500
1350
1500
1350
1500
1350
1500
1350
1500
1350
1500
1350
1500
30.7
31.0
31.4
31.7
32.7
33.1
33.0
33.4
35.9
36.4
37.5
37.9
37.9
38.3
21.2
21.4
21.8
22.1
23.1
23.4
23.4
23.8
26.2
26.7
27.8
28.1
28.2
28.5
91.1
89.1
91.5
89.6
92.4
90.4
92.6
90.6
94.6
92.5
95.7
93.4
96.0
93.6
kW
2.79
2.80
2.80
2.82
2.81
2.83
2.81
2.82
2.84
2.85
2.85
2.86
2.85
2.86
1350
1500
1350
1500
1350
1500
1350
1500
1350
1500
1350
1500
1350
1500
1350
1500
1350
1500
1350
1500
1350
1500
1350
1500
1350
1500
1350
1500
1350
1500
40.6
41.1
42.4
42.9
42.8
43.3
45.2
45.8
47.2
47.7
47.6
48.2
49.7
50.3
51.9
52.5
52.4
53.0
54.0
54.7
56.3
57.0
56.9
57.6
58.0
58.7
60.5
61.2
61.1
61.8
30.8
31.3
32.5
33.0
33.0
33.4
35.3
35.9
37.3
37.7
37.7
38.3
39.7
40.3
41.9
42.5
42.4
43.0
44.0
44.6
46.3
46.9
46.9
47.5
47.9
48.6
50.4
51.0
51.0
51.7
97.8
95.4
99.1
96.5
99.4
96.7
101.0
98.3
102.4
99.4
102.6
99.8
104.1
101.0
105.6
102.4
105.9
102.7
107.0
103.8
108.6
105.2
109.0
105.6
109.8
106.2
111.5
107.8
111.9
108.1
2.86
2.88
2.89
2.90
2.88
2.89
2.90
2.91
2.91
2.92
2.90
2.91
2.92
2.93
2.93
2.94
2.92
2.93
2.93
2.95
2.94
2.96
2.94
2.95
2.95
2.97
2.96
2.98
2.96
2.97
COP
W/W
DH
MBtuh
3.22
3.24
3.29
3.29
3.41
3.43
3.44
3.47
3.70
3.74
3.86
3.88
3.90
3.92
4.1
4.1
4.2
4.2
4.3
4.4
4.3
4.4
4.8
4.9
5.0
5.0
5.0
5.3
4.16
4.18
4.30
4.33
4.35
4.39
4.57
4.61
4.75
4.79
4.81
4.85
4.99
5.03
5.19
5.23
5.26
5.30
5.40
5.43
5.61
5.64
5.67
5.72
5.76
5.79
5.99
6.02
6.05
6.10
5.3
5.4
5.6
5.7
5.6
5.7
6.0
6.1
6.3
6.3
6.4
6.6
6.5
6.6
6.9
7.0
7.0
7.1
7.2
7.4
7.5
7.6
7.6
7.7
7.7
7.8
8.0
8.1
8.1
8.2
Operation Not Recommended
110
Airow
CFM
TC
SC
MBtuh MBtuh
Cooling
HR
MBtuh
S/T
kW
EER
DH
Btuh/W MBtuh
Operation Not Recommended
1400
1550
1400
1550
1400
1550
1400
1550
1400
1550
1400
1550
1400
1550
1400
1550
1400
1550
1400
1550
1400
1550
1400
1550
1400
1550
1400
1550
1400
1550
49.9
50.7
51.1
52.0
51.5
52.4
48.6
49.4
49.8
50.7
50.2
51.1
46.6
47.4
47.8
48.6
48.1
49.0
44.1
44.8
45.2
46.0
45.5
46.3
41.2
41.9
42.3
43.0
42.6
43.3
34.0
35.8
34.4
36.3
34.5
36.4
33.5
35.3
34.0
35.8
34.1
35.9
32.8
34.6
33.3
35.1
33.4
35.2
31.9
33.6
32.3
34.1
32.4
34.2
30.7
32.4
31.2
32.8
31.3
32.9
0.68
0.71
0.67
0.70
0.67
0.69
0.69
0.71
0.68
0.71
0.68
0.70
0.70
0.73
0.70
0.72
0.69
0.72
0.72
0.75
0.71
0.74
0.71
0.74
0.75
0.77
0.74
0.76
0.73
0.76
56.5
57.6
57.2
58.4
57.6
58.7
56.1
57.1
56.7
57.9
57.0
58.2
55.0
56.1
55.6
56.7
55.8
57.0
53.7
54.7
54.1
55.2
54.3
55.4
52.1
53.2
52.4
53.5
52.6
53.6
1.94
2.01
1.80
1.87
1.78
1.84
2.19
2.27
2.03
2.11
2.00
2.08
2.47
2.56
2.30
2.38
2.27
2.35
2.81
2.91
2.61
2.70
2.57
2.66
3.18
3.30
2.96
3.07
2.92
3.02
25.7
25.2
28.4
27.8
28.9
28.5
22.2
21.8
24.5
24.0
25.1
24.6
18.9
18.5
20.8
20.4
21.2
20.9
15.7
15.4
17.3
17.0
17.7
17.4
13.0
12.7
14.3
14.0
14.6
14.3
4.0
4.2
3.8
4.0
3.6
3.8
4.9
5.2
4.7
5.0
4.5
4.7
5.8
6.1
5.6
5.9
5.3
5.6
6.6
7.0
6.3
6.7
6.2
6.5
7.4
7.8
7.0
7.4
6.9
7.3
1400
1550
1400
1550
1400
1550
1400
1550
1400
1550
1400
1550
38.2
38.9
39.2
39.8
39.5
40.1
35.2
35.8
36.1
36.8
36.4
37.0
29.5
31.0
29.9
31.5
30.0
31.6
28.1
29.6
28.5
30.0
28.6
30.1
0.77
0.80
0.76
0.79
0.76
0.79
0.80
0.83
0.79
0.82
0.79
0.81
50.5
51.7
50.6
51.6
50.8
51.8
49.1
50.2
49.0
50.2
49.1
50.2
3.61
3.74
3.35
3.47
3.30
3.42
4.08
4.23
3.79
3.93
3.73
3.87
10.6
10.4
11.7
11.5
12.0
11.7
8.6
8.5
9.5
9.4
9.8
9.6
8.2
8.6
7.9
8.3
7.7
8.1
8.9
9.4
8.6
9.1
8.4
8.8
Heating data based on 70F EAT; Cooling data based on 80/67F EAT. See Correction Factors on page 14 for different conditions.
Roth
10
RXT Series Catalog - August 2010
RXT060 Performance Data: Full Load
5.0 Ton, 1750 CFM Heating / 1850 CFM Cooling
EWT
°F
Flow
GPM
WPD
PSI
FT
25
15.0
8.8
20.3
7.5
2.1
4.9
11.5
4.9
11.3
15.0
8.4
19.4
7.5
1.9
4.4
11.5
4.5
10.4
15.0
7.7
17.8
7.5
1.8
4.2
11.5
4.2
9.7
15.0
7.2
16.6
7.5
1.7
3.9
11.5
3.9
9.0
15.0
6.7
15.5
7.5
1.6
3.7
11.5
3.7
8.5
15.0
6.4
14.8
7.5
1.5
3.5
11.5
3.6
8.3
15.0
6.1
14.1
7.5
1.5
3.5
11.5
3.4
7.9
15.0
5.9
13.6
7.5
1.4
3.2
11.5
3.4
7.9
15.0
5.7
13.2
7.5
1.4
3.2
11.5
3.3
7.6
15.0
5.6
12.9
30
40
50
60
70
80
90
100
Airow
CFM
HC
HE
MBtuh MBtuh
Heating
LAT
°F
1750
2150
1750
2150
1750
2150
1750
2150
1750
2150
1750
2150
1750
2150
44.1
45.7
44.2
45.8
46.2
47.8
47.0
48.7
50.0
51.8
52.1
54.0
53.1
55.0
30.9
32.2
31.1
32.3
32.9
34.2
33.7
35.0
36.5
37.9
38.4
39.9
39.3
40.8
93.3
89.7
93.4
89.7
94.4
90.6
94.9
91.0
96.5
92.3
97.6
93.3
98.1
93.7
kW
3.86
3.97
3.84
3.95
3.89
3.99
3.91
4.02
3.96
4.07
4.01
4.13
4.04
4.15
1750
2150
1750
2150
1750
2150
1750
2150
1750
2150
1750
2150
1750
2150
1750
2150
1750
2150
1750
2150
1750
2150
1750
2150
1750
2150
1750
2150
1750
2150
55.9
57.9
58.3
60.4
59.4
61.5
61.8
64.1
64.5
66.9
65.7
68.1
67.7
70.1
70.7
73.2
72.0
74.6
73.3
76.0
76.6
79.4
78.0
80.8
78.7
81.5
82.1
85.1
83.6
86.7
41.8
43.5
44.1
45.8
45.1
46.8
47.2
49.1
49.7
51.7
50.8
52.8
52.5
54.5
55.3
57.4
56.5
58.7
57.5
59.8
60.6
63.0
61.9
64.3
62.4
64.8
65.6
68.1
67.0
69.6
99.6
94.9
100.8
96.0
101.4
96.5
102.7
97.6
104.1
98.8
104.8
99.3
105.8
100.2
107.4
101.5
108.1
102.1
108.8
102.7
110.5
104.2
111.3
104.8
111.6
105.1
113.4
106.6
114.2
107.3
4.12
4.23
4.17
4.28
4.19
4.31
4.29
4.40
4.34
4.46
4.37
4.49
4.46
4.58
4.51
4.64
4.54
4.67
4.62
4.75
4.68
4.81
4.71
4.84
4.77
4.90
4.83
4.97
4.86
5.00
COP
W/W
DH
MBtuh
3.35
3.37
3.37
3.40
3.48
3.51
3.52
3.55
3.70
3.73
3.81
3.83
3.85
3.88
5.8
6.0
5.8
6.0
6.1
6.3
6.2
6.4
6.7
6.9
7.0
7.1
7.1
7.4
3.98
4.01
4.10
4.13
4.15
4.18
4.22
4.27
4.35
4.39
4.41
4.44
4.45
4.48
4.59
4.62
4.65
4.68
4.65
4.69
4.80
4.84
4.85
4.89
4.83
4.87
4.98
5.02
5.04
5.08
7.4
7.7
7.7
8.0
7.8
8.1
8.3
8.5
8.7
8.8
8.9
9.1
8.9
9.2
9.4
9.7
9.6
9.9
9.8
10.1
10.3
10.4
10.5
10.7
10.3
10.7
10.8
11.2
11.1
11.5
Operation Not Recommended
110
Airow
CFM
TC
SC
MBtuh MBtuh
Cooling
HR
MBtuh
S/T
kW
EER
DH
Btuh/W MBtuh
Operation Not Recommended
1850
2100
1850
2100
1850
2100
1850
2100
1850
2100
1850
2100
1850
2100
1850
2100
1850
2100
1850
2100
1850
2100
1850
2100
1850
2100
1850
2100
1850
2100
68.6
72.8
69.6
73.8
70.4
74.6
65.9
69.8
66.8
70.8
67.6
71.6
62.9
66.7
63.8
67.6
64.5
68.4
59.7
63.3
60.6
64.2
61.3
65.0
56.4
59.8
57.2
60.6
57.8
61.3
46.0
51.7
46.6
52.4
46.8
52.5
44.9
50.4
45.5
51.1
45.6
51.2
43.6
49.0
44.2
49.7
44.4
49.8
42.3
47.5
42.9
48.2
43.0
48.3
40.9
46.0
41.5
46.6
41.6
46.7
0.67
0.71
0.67
0.71
0.66
0.70
0.68
0.72
0.68
0.72
0.67
0.72
0.69
0.73
0.69
0.74
0.69
0.73
0.71
0.75
0.71
0.75
0.70
0.74
0.73
0.77
0.73
0.77
0.72
0.76
80.2
85.4
80.7
85.8
81.3
86.3
78.5
83.4
78.8
83.7
79.3
84.3
76.4
81.3
76.7
81.6
77.2
82.1
74.4
79.1
74.6
79.3
75.0
79.8
72.4
77.0
72.4
77.1
72.7
77.4
3.41
3.68
3.25
3.51
3.19
3.44
3.68
3.98
3.51
3.79
3.44
3.72
3.97
4.29
3.79
4.09
3.71
4.01
4.30
4.64
4.10
4.42
4.02
4.34
4.68
5.05
4.46
4.82
4.37
4.72
20.1
19.8
21.4
21.0
22.1
21.7
17.9
17.5
19.0
18.7
19.7
19.2
15.8
15.5
16.8
16.5
17.4
17.1
13.9
13.6
14.8
14.5
15.2
15.0
12.1
11.8
12.8
12.6
13.2
13.0
5.5
6.2
5.2
5.9
4.9
5.5
6.6
7.4
6.3
7.1
6.0
6.7
7.7
8.6
7.4
8.3
7.0
7.9
8.7
9.8
8.5
9.5
8.1
9.1
9.8
11.0
9.4
10.6
9.1
10.2
1850
2100
1850
2100
1850
2100
1850
2100
1850
2100
1850
2100
52.8
55.9
53.5
56.7
54.1
57.4
48.9
51.9
49.6
52.6
50.2
53.2
39.4
44.3
40.0
44.9
40.1
45.0
37.9
42.5
38.4
43.1
38.5
43.2
0.75
0.79
0.75
0.79
0.74
0.78
0.78
0.82
0.77
0.82
0.77
0.81
70.3
74.8
70.2
74.8
70.5
75.1
68.4
72.9
68.2
72.6
68.4
72.8
5.14
5.55
4.90
5.29
4.80
5.19
5.70
6.15
5.44
5.87
5.33
5.75
10.3
10.1
10.9
10.7
11.3
11.1
8.6
8.4
9.1
9.0
9.4
9.3
10.9
12.2
10.6
11.9
10.2
11.4
11.9
13.4
11.7
13.1
11.2
12.6
Heating data based on 70F EAT; Cooling data based on 80/67F EAT. See Correction Factors on page 14 for different conditions.
RXT Series Catalog - August 2010
11
Roth
RXT072 Performance Data: Part Load
6.0 Ton, 1800 CFM Heating / 1750 CFM Cooling
EWT
¡F
Flow
GPM
WPD
PSI
FT
25
14.0
5.2
12.0
8.0
1.6
3.7
10.0
2.6
6.0
14.0
5.0
11.6
8.0
1.6
3.7
10.0
2.5
5.8
14.0
4.8
11.1
8.0
1.5
3.5
10.0
2.4
5.5
14.0
4.7
10.9
8.0
1.5
3.5
10.0
2.3
5.3
14.0
4.5
10.4
8.0
1.4
3.2
10.0
2.3
5.3
14.0
4.4
10.2
8.0
1.4
3.2
10.0
2.2
5.1
14.0
4.3
9.9
8.0
1.4
3.2
10.0
2.1
4.9
14.0
4.2
9.7
8.0
1.3
3.0
10.0
2.0
4.6
14.0
4.0
9.2
8.0
1.2
2.8
10.0
1.9
4.4
14.0
3.7
8.5
30
40
50
60
70
80
90
100
110
Air ow
CFM
1475
1800
1475
1800
1475
1800
1475
1800
1475
1800
1475
1800
1475
1800
147
1800
1475
180
1475
1800
1475
1800
1475
1800
1475
1800
1475
1800
1475
1800
1475
1800
1475
1800
1475
1800
1475
1800
1475
1800
1475
1800
1475
1800
HC
HE
MBtuh MBtuh
37.8
38.8
38.6
39.6
39.0
40.1
41.0
42.2
44.8
46.0
45.3
46.6
47.6
48.9
51.0
52.4
51.6
53.0
54.3
55.7
57.2
58.7
57.9
59.5
60.8
62.5
63.2
64.9
64.0
65.8
67.3
69.1
69.1
71.0
70.0
71.9
73.5
75.5
74.7
76.8
75.7
77.7
79.5
81.7
25.9
26.8
26.8
27.6
27.1
28.1
29.0
30.0
32.6
33.7
33.1
34.2
35.2
36.4
38.7
39.9
39.2
40.4
41.6
42.8
44.4
45.7
45.1
46.5
47.8
49.3
50.1
51.7
50.9
52.5
54.0
55.6
55.8
57.5
56.6
58.3
60.0
61.7
61.1
63.0
62.1
63.8
65.7
67.7
Heating
LAT
¡F
93.7
90.0
94.2
90.4
94.5
90.6
95.7
91.7
98.1
93.7
98.4
94.0
99.9
95.2
102.0
97.0
102.4
97.3
104.1
98.7
105.9
100.2
106.3
100.6
108.2
102.2
109.7
103.4
110.2
103.8
112.2
105.5
113.4
106.5
113.9
107.0
116.1
108.8
116.9
109.5
117.5
110.0
119.9
112.0
kW
3.48
3.53
3.47
3.52
3.48
3.53
3.52
3.58
3.56
3.61
3.57
3.63
3.62
3.67
3.59
3.65
3.62
3.68
3.71
3.77
3.74
3.80
3.75
3.81
3.80
3.86
3.83
3.88
3.84
3.90
3.89
3.95
3.91
3.96
3.92
3.98
3.97
4.03
3.98
4.04
3.99
4.06
4.04
4.10
COP
W/W
3.18
3.22
3.26
3.30
3.28
3.33
3.41
3.45
3.69
3.73
3.72
3.76
3.85
3.90
4.16
4.21
4.18
4.22
4.29
4.33
4.48
4.53
4.52
4.58
4.69
4.74
4.83
4.90
4.88
4.94
5.07
5.13
5.18
5.25
5.23
5.29
5.42
5.49
5.50
5.57
5.56
5.61
5.77
5.84
Operation Not Recommended
DH
MBtuh
5.0
5.1
5.1
5.2
5.2
5.3
5.4
5.6
6.0
6.1
6.1
6.2
6.4
6.7
6.7
6.9
6.8
7.0
7.1
7.3
7.6
7.7
7.8
7.9
8.1
8.4
8.3
8.5
8.5
8.7
8.9
9.1
9.2
9.4
9.4
9.6
9.8
10.0
9.9
10.2
10.0
10.3
10.5
10.8
Air ow
CFM
TC
SC
MBtuh MBtuh
Cooling
HR
MBtuh
S/T
kW
EER
DH
Btuh/W MBtuh
Operation Not Recommended
1425
1750
1425
1750
1425
1750
1425
1750
1425
1750
1425
1750
1425
1750
1425
1750
1425
1750
1425
1750
1425
1750
1425
1750
1425
1750
1425
1750
1425
1750
1425
1750
1425
1750
1425
1750
1425
1750
1425
1750
1425
1750
57.9
58.5
58.4
58.9
58.5
59.0
56.4
56.9
56.8
57.3
57.0
57.5
53.6
54.0
54.0
54.4
54.1
54.6
50.5
51.0
50.9
51.4
51.0
51.5
48.4
48.9
48.8
49.2
48.9
49.4
48.4
48.8
48.7
49.2
48.9
49.3
51.4
51.9
51.8
52.3
52.0
52.4
36.4
41.5
36.4
41.5
36.4
41.6
35.2
40.2
35.3
40.2
35.3
40.2
34.3
39.1
34.3
39.1
34.3
39.2
33.4
38.1
33.5
38.2
33.5
38.2
32.5
37.1
32.5
37.1
32.6
37.1
31.3
35.7
31.4
35.8
31.4
35.8
29.8
33.9
29.8
34.0
29.8
34.0
0.63
0.71
0.62
0.70
0.62
0.71
0.62
0.71
0.62
0.70
0.62
0.70
0.64
0.72
0.64
0.72
0.63
0.72
0.66
0.75
0.66
0.74
0.66
0.74
0.67
0.76
0.67
0.75
0.67
0.75
0.65
0.73
0.64
0.73
0.64
0.73
0.58
0.65
0.58
0.65
0.57
0.65
66.2
67.5
66.5
67.6
66.3
67.4
65.6
66.9
65.8
67.0
65.7
66.9
63.8
65.0
63.9
65.1
63.7
64.9
61.7
63.1
61.8
63.1
61.5
62.8
60.8
62.3
60.8
62.2
60.5
62.0
62.3
63.7
62.1
63.7
61.9
63.3
67.0
68.8
67.0
68.7
66.6
68.2
2.44
2.64
2.37
2.56
2.29
2.47
2.71
2.93
2.63
2.85
2.54
2.75
2.98
3.22
2.90
3.13
2.80
3.02
3.28
3.54
3.19
3.44
3.08
3.32
3.63
3.92
3.52
3.81
3.40
3.68
4.06
4.38
3.94
4.25
3.80
4.11
4.58
4.95
4.45
4.81
4.29
4.64
23.7
22.2
24.6
23.0
25.5
23.9
20.8
19.4
21.6
20.1
22.4
20.9
18.0
16.8
18.6
17.4
19.3
18.1
15.4
14.4
16.0
14.9
16.6
15.5
13.3
12.5
13.9
12.9
14.4
13.4
11.9
11.1
12.4
11.6
12.9
12.0
11.2
10.5
11.6
10.9
12.1
11.3
4.3
4.9
4.1
4.7
3.9
4.4
5.2
5.9
5.0
5.7
4.7
5.3
6.1
6.9
5.8
6.6
5.4
6.2
6.9
7.9
6.7
7.6
6.3
7.2
7.8
8.9
7.4
8.5
7.1
8.1
8.6
9.8
8.3
9.5
7.9
9.0
9.4
10.7
9.1
10.4
8.7
9.9
Heating data based on 70F EAT; Cooling data based on 80/67F EAT. See Correction Factors on page 14 for different conditions.
Roth
12
RXT Series Catalog - August 2010
RXT072 Performance Data: Full Load
6.0 Ton, 2150 CFM Heating / 2100 CFM Cooling
EWT
°F
Flow
GPM
WPD
PSI
FT
25
16.0
6.8
15.7
9.0
2.1
4.9
14.0
5.0
11.6
16.0
6.6
15.2
9.0
2.0
4.6
14.0
4.8
11.1
16.0
6.3
14.6
9.0
1.9
4.4
14.0
4.7
10.9
16.0
6.1
14.1
9.0
1.9
4.4
14.0
4.5
10.4
16.0
5.9
13.6
9.0
1.8
4.2
14.0
4.4
10.2
16.0
5.8
13.4
9.0
1.8
4.2
14.0
4.3
9.9
16.0
5.6
12.9
9.0
1.7
3.9
14.0
4.2
9.7
16.0
5.4
12.5
9.0
1.6
3.7
14.0
4.0
9.2
16.0
5.2
12.0
9.0
1.5
3.5
14.0
3.7
8.5
16.0
4.9
11.3
30
40
50
60
70
80
90
100
Airow
CFM
HC
HE
MBtuh MBtuh
Heating
LAT
°F
1750
2150
1750
2150
1750
2150
1750
2150
1750
2150
1750
2150
1750
2150
52.7
54.6
52.5
54.3
55.9
58.0
56.4
58.5
59.4
61.6
63.4
65.6
63.9
66.2
37.4
39.1
37.1
38.7
40.1
42.0
40.6
42.5
43.1
45.1
46.7
48.7
47.1
49.3
97.9
93.5
97.8
93.4
99.6
95.0
99.8
95.2
101.4
96.5
103.5
98.3
103.8
98.5
kW
4.49
4.54
4.52
4.57
4.63
4.68
4.64
4.70
4.77
4.83
4.89
4.95
4.91
4.96
1750
2150
1750
2150
1750
2150
1750
2150
1750
2150
1750
2150
1750
2150
1750
2150
1750
2150
1750
2150
1750
2150
1750
2150
1750
2150
1750
2150
1750
2150
66.5
68.8
70.9
73.4
71.5
74.1
73.7
76.4
78.6
81.5
79.3
82.2
81.4
84.3
86.8
89.9
87.6
90.7
89.6
92.8
95.5
98.9
96.3
99.8
98.4
101.9
104.9
108.7
105.9
109.7
49.4
51.5
53.4
55.7
54.0
56.4
55.9
58.3
60.3
63.0
60.9
63.6
62.7
65.4
67.6
70.4
68.3
71.2
69.8
72.8
75.2
78.4
75.9
79.2
77.2
80.5
83.2
86.7
84.1
87.7
105.2
99.6
107.5
101.6
107.8
101.9
109.0
102.9
111.6
105.1
112.0
105.4
113.1
106.3
115.9
108.7
116.3
109.1
117.4
110.0
120.5
112.6
121.0
113.0
122.1
113.9
125.5
116.8
126.0
117.2
5.00
5.06
5.13
5.19
5.14
5.20
5.23
5.29
5.37
5.43
5.38
5.44
5.49
5.55
5.63
5.70
5.65
5.71
5.81
5.87
5.96
6.02
5.97
6.04
6.21
6.28
6.37
6.44
6.38
6.46
COP
W/W
DH
MBtuh
3.44
3.52
3.40
3.48
3.54
3.63
3.56
3.65
3.65
3.74
3.80
3.88
3.81
3.91
6.9
7.1
6.9
7.1
7.4
7.7
7.5
7.8
8.0
8.3
8.6
8.6
8.7
8.9
3.90
3.98
4.05
4.14
4.08
4.18
4.13
4.23
4.29
4.40
4.32
4.43
4.34
4.45
4.52
4.62
4.54
4.65
4.52
4.63
4.69
4.81
4.73
4.84
4.64
4.75
4.83
4.95
4.86
4.98
8.8
9.1
9.4
9.7
9.5
9.8
10.0
10.3
10.6
10.7
10.7
11.0
10.8
11.2
11.5
11.9
11.5
11.9
12.1
12.5
12.9
12.9
13.0
13.3
13.0
13.5
13.8
14.3
14.0
14.5
Operation Not Recommended
110
Airow
CFM
TC
SC
MBtuh MBtuh
Cooling
HR
MBtuh
S/T
kW
EER
DH
Btuh/W MBtuh
Operation Not Recommended
1700
2100
1700
2100
1700
2100
1700
2100
1700
2100
1700
2100
1700
2100
1700
2100
1700
2100
1700
2100
1700
2100
1700
2100
1700
2100
1700
2100
1700
2100
70.1
70.8
72.6
73.3
73.7
74.5
67.0
67.7
69.4
70.1
70.4
71.2
64.1
64.8
66.3
67.1
67.4
68.1
61.2
61.8
63.3
64.0
64.3
65.0
58.1
58.7
60.1
60.8
61.1
61.7
46.1
49.1
46.7
49.8
47.0
50.1
44.5
47.4
45.2
48.1
45.4
48.4
43.2
46.1
43.8
46.8
44.1
47.0
41.9
44.7
42.5
45.4
42.8
45.6
40.5
43.2
41.1
43.9
41.4
44.1
0.66
0.69
0.64
0.68
0.64
0.67
0.66
0.70
0.65
0.69
0.64
0.68
0.67
0.71
0.66
0.70
0.65
0.69
0.68
0.72
0.67
0.71
0.67
0.70
0.70
0.74
0.68
0.72
0.68
0.71
82.5
85.2
84.4
87.0
85.4
88.1
80.0
82.8
81.8
84.5
82.7
85.5
78.1
81.0
79.6
82.5
80.6
83.4
76.1
79.1
77.5
80.5
78.4
81.3
74.6
77.8
75.7
79.0
76.6
79.7
3.63
4.22
3.46
4.01
3.43
3.98
3.82
4.43
3.63
4.21
3.60
4.18
4.09
4.74
3.89
4.51
3.86
4.48
4.36
5.06
4.15
4.82
4.12
4.78
4.82
5.59
4.58
5.32
4.55
5.28
19.3
16.8
21.0
18.3
21.5
18.7
17.5
15.3
19.1
16.7
19.6
17.0
15.7
13.7
17.0
14.9
17.5
15.2
14.0
12.2
15.3
13.3
15.6
13.6
12.1
10.5
13.1
11.4
13.4
11.7
5.4
5.8
5.2
5.5
5.0
5.3
6.6
7.0
6.3
6.7
6.0
6.4
7.6
8.1
7.3
7.8
7.0
7.5
8.6
9.2
8.3
8.9
8.1
8.6
9.7
10.3
9.3
9.9
9.0
9.6
1700
2100
1700
2100
1700
2100
1700
2100
1700
2100
1700
2100
54.4
55.0
56.3
56.9
57.2
57.8
50.0
50.5
51.8
52.3
52.6
53.1
39.0
41.6
39.6
42.2
39.8
42.4
37.1
39.5
37.6
40.1
37.8
40.3
0.72
0.76
0.70
0.74
0.70
0.73
0.74
0.78
0.73
0.77
0.72
0.76
72.1
75.5
73.1
76.4
73.9
77.2
69.5
73.2
70.4
73.9
71.1
74.5
5.18
6.01
4.93
5.72
4.89
5.68
5.72
6.64
5.45
6.32
5.41
6.27
10.5
9.2
11.4
9.9
11.7
10.2
8.7
7.6
9.5
8.3
9.7
8.5
10.7
11.4
10.3
11.0
10.0
10.6
11.6
12.4
11.3
12.1
10.9
11.6
Heating data based on 70F EAT; Cooling data based on 80/67F EAT. See Correction Factors on page 14 for different conditions.
RXT Series Catalog - August 2010
13
Roth
Correction Factors
Heating Correction Factors
EAT °F
HC
HE
kW
50
1.0465
1.1188
0.8024
55
1.0351
1.0918
0.8436
60
1.0253
1.0645
0.8928
65
1.0108
1.0300
0.9454
70
1.0000
1.0000
1.0000
75
0.9895
0.9701
1.0553
80
0.9742
0.9489
1.0518
Cooling Correction Factors
Sensible Cooling Correction Factors
EAT
(WB) °F
TC
HR
kW
EAT
(WB) °F
55
0.8215
0.8293
0.8635
70
75
60
0.8955
0.9001
0.9205
55
1.201
1.289
63
0.9404
0.9431
0.9547
60
0.943
1.067
1.192
65
0.9701
0.9715
0.9774
63
0.855
0.998
1.140
67
1.0000
1.0000
1.0000
65
0.797
0.952
1.106
1.261
70
1.0446
1.0425
1.0335
67
0.624
0.812
1.000
1.188
1.343
75
1.1179
1.1124
1.0878
0.697
0.820
0.944
1.067
0.637
0.817
0.983
Roth
70
75
14
EAT (DB) °F
80
85
90
RXT Series Catalog - August 2010
Physical Data
Dual Capacity Vertical
Model Number
024
036
048
060
072
10 x 11
10 x 11
10 x 11
10 x 11
.5
1
1
1
72
85
96
118
Face Area (Sq.Ft.)
5.56
6.25
6.25
6.25
Dimensions (in.)
32 x 28.5
x 2.1
36 x 28.5
x 2.2
36 x 28.5
x 2.8
36 x 28.5
x 2.8
3
3
4
4
Fan Wheel (in.)
Fan Motor
ECM (HP)
Future
Models
Refrigerant Charge (oz.)
Air Coil
Number Of Rows
Future
Models
Filter 1” Thick
Unit Weight (nominal) - lbs
RXT Series Catalog - August 2010
28 x 30
x1
420
28 x 34 x 1
510
15
510
510
Roth
Dimensional Data:
Vertical Upflow Configuration
B
C
27.63
.97
Power Supply 1/2”
5.50
.89
1.13
CAP
High Voltage Supply 1”
E
BSP
Air Coil
D
D
A2
A1
Condensate
3/4” FPT
Condensate
3/4” FPT
CSP
ASP
ASP
Left View
Front & Back View
Control Panel
Plug Plate
30.33
28.01
Low Votage 1/2”
16.00
CAP
Plenum
Flanges
P
SA
Access
Panels
AIR COIL
SIDE
Filter
Rack
16.00
32.20
30.33
28.01
BS P
5.31
Control Box
32.20
Top View
14.00
Top Discharge
SA
CS P
P
LEGEND:
10.73
SAP = Service Access Panel
BSP = Blower Service Panel
CSP = Compressor Service Panel
CAP= Control Access Panel
ASP = Access Service Panel
FPT = Female Pipe Thread
Model
13.00
AIR COIL
SIDE
8.12
Dimensional Data
without Control Box
Bottom View
Bottom Discharge
Dimensional Data
with Control Box
Supply Air
(Top Discharge)
Supply Air
(Bottom Discharge)
Return Air
Height
(A1)
Width
(B)
Depth
(C)
Height
(A2)
Width
Depth
Width
Depth
Width
(E)
Height
(D)
024 036
56.1
30.3
32.2
62.5
16.0
16.0
13.0
14.0
26.0
28.0
048 072
60.1
30.3
32.2
66.5
16.0
16.0
16.0
16.0
26.0
32.0
Notes:
All Desuperheater connections are 3/4” FPT.
All measurements are in inches.
Ground loop connections are 1” FPT
Roth
16
RXT Series Catalog - August 2010
Electrical Data
Two-Stage Packaged Units
60Hz Power
Model
Voltage
Code
Compressor
Volts
Phase
LRA
RLA
ECM
Fan
Motor
FLA
82.0
16.7
4.3
0.5
4.0
25.5
29.7
45
10
024
HWG
Pump
FLA
Ext
Loop
Pump
FLA*
Total
Unit
FLA
Min
Circuit
AMPS
Max
Fuse
HACR
Min
AWG
Max
Ft
65
Future Model
036
1
208-230
1
048
1
208-230
1
96.0
21.2
7.0
0.5
5.5
34.2
39.5
60
8
74
060
1
208-230
1
118.0
25.6
7.0
0.5
5.5
38.6
45.0
70
6
105
072
1
208-230
1
150.0
27.2
7.0
0.5
5.5
40.2
47.0
70
6
101
Notes:
1. All line and low voltage wiring must adhere to the National Electrical Code and local codes, whichever is the most stringent.
2. Wire length based on a one way measurement with a 2% voltage drop.
3. Wire size based on 60°C copper conductor and minimum circuit ampacity.
3. All fuses class RK-5.
4. Min/Max Voltage: 208-230/60/1 = 197/243.
* The external loop pump FLA is based on a maximum of three UP26-116F-230V pumps (1/2hp) for 048 - 072 and two pumps for
024 - 036.
RXT Series Catalog - August 2010
17
Roth
Electrical Data:
Auxiliary Heater Electrical Data
TECHNICAL DATA (AHTR Electric Heaters only) Single Phase w/ Circuit Breaker
Heater Model
AHTR101B
Ground
Wire
Heat
kW
Supply
Circuit
Number
Heater
kW Per
Circuit
FLA
Total
AMPS
240
10
Single
5
41.7
52.1
208
7.5
Single
3.75
36.1
45.1
2
6
115
1
10
Mult. 1
5
20.8
26.0
30
2
10
118
1
10
Mult. 2
10
41.7
52.1
60
2
6
101
1
10
Mult. 1
3.75
18.0
22.5
30
2
10
118
1
10
Mult. 2
7.5
36.1
45.1
60
2
6
101
1
10
Mult. 1
10
41.6
52.0
60
2
6
101
1
10
240
208
208
240
AHTR201B**
Recommended
Supply Wire
75°C. Copper
Supply
Voltage
240
AHTR151B*
Maximum
OverCurrent
Protective
Device
(AMPS.)
MCA
Min
Circuit
Ampacity
240
208
208
15
11.25
20
15
60
# of
Wires
Wire
Size
Max
Length
(Ft)
# of
wires
Min
Size
2
6
101
1
10
Mult. 2
10
41.6
52.0
60
2
6
101
1
10
Mult. 1
7.5
48.1
60.0
60
2
6
101
1
10
Mult. 2
7.5
48.1
60.0
60
2
6
101
1
10
* Not recommended for size 024.
** Not recommended for sizes 024-036.
Roth
18
RXT Series Catalog - August 2010
Controls
Microprocessor Features and Operation
Roth’s geothermal heat pump controls provide
a unique modular approach for controlling
heat pump operation. The control system
uses one, two, or three printed circuit boards,
depending upon the features of a particular
unit. This approach simplifies installation and
troubleshooting, and also eliminates features that
are not applicable for some units.
A microprocessor-based printed circuit board
controls the inputs to the unit as well as outputs
for status mode, faults, and diagnostics. A
status LED and an LED for each fault is provided
for diagnostics. An ECM control module
provides field selectable options for airflow and
dehumidification mode, plus an LED to indicate
CFM (100 CFM per flash). If the combination
unit is desired (combination water-to-air and
water-to-water heat pump), a third board
controls the hydronic portion of the unit,
allowing field selectable hot water/forced air
priority and other options.
Removable low voltage terminal strips provide all
necessary terminals for field connections. Not only
are the thermostat inputs included, but there are
also two additional removable terminal strips for
all of the accessory and electric heat wiring for
ease of installation and troubleshooting.
Startup/Random Start
The unit will not operate until all the inputs
and safety controls are checked for normal
conditions. At first power-up, the compressor is
energized after a five minute delay. In addition,
a zero to sixty second random start delay is
added at first power-up to avoid multiple units
from being energized at the same time.
RXT Series Catalog - August 2010
Water Solenoid Valve Connections
Two accessory relay outputs at the terminal
strip provide a field connection for two types
of water solenoid valves, a standard 24VAC
solenoid valve, or a 24VAC solenoid valve
with an end switch. Additional field wiring is no
longer required for operation of the end switch.
Humidifier/Dehumidification Connections
Connections for a humidistat are provided,
which automatically engages the fan when
the humidistat contact closes. In addition, a
field connection is provided at the terminal
strip for external control of the On Demand
Dehumidification (ODD) feature for the variable
speed ECM motor (when equipped), which
automatically lowers the fan speed when the
space humidity is higher than set point. Either
connection may be used with a thermostat that
includes humidifier/dehumidification outputs.
Not applicable for splits/water-to-water.
Airflow Monitor (Units with ECM Motor)
An LED on the ECM control module flashes
one time per 100 CFM when the unit’s fan is
operating to indicate airflow.
Resistance Heat Control
The electric heat control module contains the
appropriate high-voltage control relays. Low
voltage control signals from the compressor
section energize the relays in the electric heat
module to engage backup electric heat
when necessary.
Short Cycle Protection
A built-in five minute anti-short cycle timer
provides short cycle protection of the compressor.
Component Sequencing Delays
Components are sequenced and delayed for
optimum space conditioning performance and
to make any startup noise less noticeable.
Test Mode
The microprocessor control allows the
technician to shorten most timing delays for
faster diagnostics by changing the position of a
jumper located on the lockout board.
Electronic Condensate Overflow Protection
The control board utilizes an impedance
sensing liquid sensor at the top of the drain pan.
Since the drain pan is grounded, when water
touches the sensor for 30 continuous seconds,
the sensor sends a ground signal to the lockout
board, indicating that a condensate overflow
fault has occurred.
19
Roth
Controls
CFM
ECM Board Layout
COM
W1
COM2
24VAC XFMR
SEC
ECM
Board
O/B Y1 G W1 R ODD W2 Y2 C
Loop Pump Circuit Breakers
(Single Compressor Units)
The loop pump(s) and desuperheater pump
are protected by control box mounted circuit
breakers for easy wiring of pumps during
installation. Circuit breakers eliminate the need
to replace fuses.
Safety Controls
The control receives separate signals for
high pressure, low pressure, low water flow,
and condensate overflow faults. Upon a
continuous 30-second measurement of the
fault (immediate for high pressure), compressor
operation is suspended (see Fault Retry below),
and the appropriate LED flashes. Once the unit
is locked out (see Fault Retry below), an output
(terminal “L”) is made available to a fault LED
at the thermostat (water-to-water unit has fault
LED on the corner post).
Low Pressure: If the low pressure switch is open
for 30 continuous seconds, the compressor
operation will be interrupted, and the control
will go into fault retry mode. At startup, the low
pressure switch is not monitored for 90 seconds
to avoid nuisance faults.
High Pressure: If the high pressure switch
opens, the compressor operation will be
interrupted, and the control will go into fault
retry mode. There is no delay from the time the
switch opens and the board goes into fault
retry mode. There is also no delay of switch
monitoring at startup.
Flow Switch: If the flow switch is open for 30
continuous seconds, the compressor operation
Roth
will be interrupted, and the control will go into
fault retry mode. At startup, the flow switch
is not monitored for 30 seconds to avoid
nuisance faults.
Condensate Overflow: If water touches the
condensate overflow sensor for 30 continuous
seconds, the compressor operation will be
interrupted, and the control will go into
fault retry mode. There is no delay of switch
monitoring at startup.
Fault Retry
All faults are retried twice before finally locking
the unit out. The fault retry feature is designed to
prevent nuisance service calls. There is an antishort cycle period between fault retries. On the
third fault, the board will go into lockout mode.
Over/Under Voltage Shutdown
The lockout board protects the compressor
from operating when an over/under voltage
condition exists. The control monitors secondary
voltage (24VAC) to determine if an over/
under voltage condition is occurring on the
primary side of the transformer. For example, if
the secondary voltage is 19 VAC, the primary
voltage for a 240V unit would be approximately
190V, which is below the minimum voltage
(197V) recommended by the compressor
manufacturer. This feature is self-resetting. If
the voltage comes back within range, normal
operation is restored. Therefore, over/under
voltage is not a lockout.
Under voltage (18 VAC) causes the compressor
to disengage and restart when the voltage
returns to 20 VAC. Over voltage (31 VAC)
causes the compressor to disengage and
restart when the voltage returns to 29 VAC.
During an over or under voltage condition,
all five fault LEDs will blink (HP + LP + FS + CO
+ Status). When voltage returns to normal
operation, the four fault LED’s will stop blinking,
but the status LED will continue to flash. While
the board LEDs are flashing, the thermostat
fault light will be illuminated.
20
RXT Series Catalog - August 2010
Controls
Intelligent Reset
If the thermostat is powered off and back
on (soft reset), the board will reset, but the
last fault will be stored in memory for ease of
troubleshooting. If power is interrupted to the
board, the fault memory will be cleared.
Diagnostics
The lockout board includes five LEDs (status,
high pressure, low pressure, low water flow,
condensate overflow) for fast and simple
control board diagnosis. Below is a table
showing LED function.
Lockout with Emergency Heat
While in lockout mode, if the thermostat is
calling for backup heat, emergency heat
mode will occur.
LED Identification
LED Color
Location1
Function
Normal Operation
Fault Retry2
Lockout2
Green
Top
High Pressure
OFF
3
Flashing
ON3
Orange
2nd
Low Pressure
OFF
Flashing3
ON3
Red
3rd
Water Flow
OFF
Flashing3
ON3
Yellow
4th
Condensate
Overflow
OFF
Flashing3
ON3
Green
Bottom
Status
Flashing4
Flashing5
Flashing4
Notes:
1. Looking at the board when the LEDs are on the right hand side
2. If all five lights are flashing, the fault is over/under voltage
3. Only the light associated with the particular fault/lockout will be on or flashing.
For example, if a high pressure lockout has occurred, the top green light will be on.
The orange, red, and yellow lights will be off
4. Status lights will be off when tin test mode
5. Flashes alternately with the fault LED
Hot Water Pump Control
Controls for high water temperature and low
compressor discharge line temperature prevent
the hot water (desuperheater) pump from
operating when the leaving water temperature
is above 130°F, or when the compressor
discharge line is too cool to provide adequate
water heating.
Lockout Board Jumper Selection
The lockout board includes three jumpers for
field selection of various board features.
Water Solenoid Valve Delay (WSD): When
the WSD jumper is installed, the “A” terminal is
energized when the compressor is energized.
When the jumper is removed, the “A” terminal
is energized 10 seconds after the compressor.
RXT Series Catalog - August 2010
If using the Taco water solenoid valve (or a
valve with an end switch), the unit terminal strip
includes a means for connecting a valve of this
type. The WSD jumper should be installed. If
using a slow opening valve that does not have
an end switch, the jumper should be removed.
Test Mode (TEST): When the TEST jumper is
installed, the board operates in the normal
mode. When the jumper is removed, the board
operates in test mode, which speeds up all
delays for easier troubleshooting. When service
is complete, the jumper must be re-installed in
order to make sure that the unit operates with
normal sequencing delays.
Over/Under Voltage Disable (O/V): When the
O/V jumper is installed, the over/under voltage
feature is active. When the jumper is removed,
21
Roth
Controls
the over/under voltage feature is disabled.
On rare occasions, variations in voltage will be
outside the range of the over/under voltage
feature, which may require removal of the
jumper. However, removal of the jumper could
cause the unit to run under adverse conditions,
and therefore should not be removed without
contacting technical services. An over/under
voltage condition could cause premature
component failure or damage to the unit
controls. Any condition that would cause
this fault must be thoroughly investigated
before taking any action regarding the jumper
removal. Likely causes of an over/under
voltage condition include power company
transformer selection, insufficient entrance
wire sizing, defective breaker panel, incorrect
transformer tap (unit control box), or other
power-related issues.
Heat, 3rd Stage (Y1,Y2,W,G) Two-Stage Units
The ECM fan remains at 100% of 2nd stage CFM
level, and the electric backup heat is energized.
Emergency Heat (W,G)
The fan is started immediately at 110% of 2nd
stage CFM level, and the electric backup heat
is energized.
Lockout Board Layout
CCG
CC
Lockout
Board
A
C
R
Y
L
O
Sequence of Operation:
Water-to-Air Units, Single Compressor, ECM Fan
Heating, 1st Stage (Y1,G) Single Speed Units
The fan motor is started immediately at
75% CFM level, the compressor and loop/
desuperheater pump(s) are energized 10
seconds after the “Y1” input is received, and
the ECM fan adjusts to 100% CFM level 30
seconds after the “Y1” input.
Heating, 2nd Stage (Y1,W,G) Single Speed Units
The ECM fan remains at 100% of 1st stage CFM
level, and the electric backup heat is energized.
Heating, 1st Stage (Y1,G) Two-Stage Units
The ECM fan is started immediately at 75%
(of 1st stage operation) CFM level, first stage
compressor and the loop/desuperheater
pump(s) are energized 10 seconds after the
“Y1” input is received, and the ECM fan adjusts
to 100% (of 1st stage operation) CFM level 30
seconds after the “Y1” input.
Heating, 2nd Stage (Y1,Y2,G) Two-Stage Units
The ECM fan adjusts to 2nd stage CFM level,
and the compressor full load solenoid valve
is energized.
Roth
R2 R1 C2 C1
WSD
TEST
O/V
HP
HP
LP
LP
FS
FS
CO
CO
Status
Cooling Operation
The reversing valve is energized for cooling
operation. Terminal “O” from the thermostat is
connected to the reversing valve solenoid.
Cooling (Y1,0,G) Single Speed Units
The fan motor is started immediately at
75% CFM level, the compressor and loop/
desuperheater pump(s) are energized 10
seconds after the “Y1” input is received, and
the ECM fan adjusts to 100% CFM level 30
seconds after the “Y1” input.
Cooling, 1st stage (Y1,0,G) Two-Stage Units
The ECM fan is started immediately at 75%
(of 1st stage operation) CFM level, first stage
compressor and the loop/desuperheater
pump(s) are energized 10 seconds after the
“Y1” input is received, and the ECM fan adjusts
to 100% (of 1st stage operation) CFM level 30
seconds after the “Y1” input.
22
RXT Series Catalog - August 2010
Controls
Sequence of Operation:
Water-to-Air Units, Single Compressor, PSC Fan
Cooling, 2nd Stage (Y1,Y2,O,G) Two-Stage Units
The ECM fan adjusts to 2nd stage CFM level,
and the compressor full load solenoid valve
is energized.
Cooling, Dehumidification Mode
The ECM control module includes two
types of dehumidification modes, Forced
Dehumidification mode, and On Demand
Dehumidification (ODD). If the ECM control
module is set to Forced Dehumidification mode,
the ECM fan runs at normal CFM in all heating
stages, but all cooling operation will be 85% of
the current stage CFM level, which lowers the
CFM through the evaporator coil, improving
latent capacity. In ODD mode, a humidistat
or a thermostat with a dehumidification output
(output must be reverse logic -- i.e. it must
operate like a humidistat) is connected to the
ODD terminal. When the module receives a
call for dehumidification, the fan runs at 85%
of the current stage CFM in the cooling mode.
Otherwise, the airflow is at the normal CFM
level. The signal is ignored in the heating mode.
Fan Only
When the ECM control module receives a “G”
call without a call for heating or cooling, the
fan operates at 50% of the full load CFM level.
Heating, 1st Stage (Y1,G)
The fan motor is started immediately, the
compressor and loop/desuperheater pump(s)
are energized 10 seconds after the “Y1” input
is received.
Heating, 2nd Stage (Y1,W,G)
The compressor continues to operate, and the
electric backup heat is energized when a “W”
input is received.
Emergency Heat (W,G)
The fan and electric backup heat are
energized immediately when a “W” input
is received.
Cooling Operation
The reversing valve is energized for cooling
operation. Terminal “O” from the thermostat is
connected to the reversing valve solenoid.
Cooling (Y1,0,G)
The fan motor is started immediately, the
compressor and loop/desuperheater pump(s)
are energized 10 seconds after the “Y1” input
is received.
Fan Only
When the control receives a “G” call without a
call for heating or cooling, the fan operates at
the heating/cooling CFM level.
RXT Series Catalog - August 2010
23
Roth
Controls
ECM Fan Performance - Two-Stage Compressor Units
Model
1
Heating Modes
Cooling Modes
Dehumidification
Mode6
1st
Stage
2nd
Stage
1st
Stage
2nd
Stage
1st
Stage
2nd
Stage
A
-
-
-
-
-
-
Program
2
024
036
048
060
072
DIP Switch Settings4
Only
Fan
S1
S2
S3
S4
S5
S6
S7
S8
-
-
-
-
-
-
-
-
-
Future Model
B
1050
1300
1050
1300
893
1105
650
OFF
OFF
ON
OFF
OFF
OFF
OFF
OFF
C
900
1200
900
1200
765
1020
550
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
D
850
1050
850
1050
500
OFF
OFF
OFF
ON
OFF
OFF
OFF
OFF
A
1500
1750
1550
1850
1318
1573
925
ON
OFF
ON
OFF
ON
OFF
OFF
OFF
1190
1445
B
1400
1650
1400
1700
850
OFF
ON
ON
OFF
OFF
ON
OFF
OFF
C
1275
1500
1275
1550
775
OFF
ON
OFF
OFF
OFF
ON
OFF
OFF
D
1150
1350
1150
1400
700
OFF
ON
OFF
ON
OFF
ON
OFF
OFF
A
1800
2150
1750
2100
1488
1785
1050
OFF
OFF
ON
OFF
OFF
OFF
OFF
OFF
B
1500
1750
1550
1850
1318
1573
925
ON
OFF
ON
OFF
ON
OFF
OFF
OFF
C
1350
1600
1400
1675
825
ON
OFF
OFF
OFF
ON
OFF
OFF
OFF
D
1225
1425
1250
1500
750
ON
OFF
OFF
ON
ON
OFF
OFF
OFF
A
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
B
1800
2150
1750
2100
1488
1785
1050
OFF
OFF
ON
OFF
OFF
OFF
OFF
OFF
C
1625
1950
1600
1900
1360
1615
950
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
D
1475
1750
1425
1700
850
OFF
OFF
OFF
ON
OFF
OFF
OFF
OFF
Notes:
1. Program B (Bold type) is factory settings and rated CFM. CFM is controlled within 5% up to the max. ESP.
Max. ESP includes allowance for wet coil and standard filter.
2. Power must be off to the unit for at least 3 seconds before the ECM motor will recognize a speed change.
Dehumidification Mode Options
DIP Switch
S9
S10
ON
OFF
Mode
Operation
Normal
Dehumidification mode disabled (normal Htg/Clg CFM) - factory setting
OFF
ON
ODD
On Demand dehumidification mode (humidistat input at terminal ODD) Humidistat required
OFF
OFF
Constant Dehum
Constant dehumidification mode (always uses dehum CFM for cooling and
normal CFM for heating) - No humidistat required
ON
ON
Not Used
Not an applicable selection
Notes:
1. ODD uses reverse logic, which allows a humidistat to be used for this feature instead of a dehumidistat.
To enter dehumidification mode, ODD input should be 0 VAC; for normal cooling CFM, ODD input should be 24VAC.
2. Heating CFM is not affected by dehumidification mode. When in dehumidification mode, cooling CFM is 85% of normal
cooling CFM (when not in dehumidification mode).
Roth
24
RXT Series Catalog - August 2010
Controls
RXT Series Catalog - August 2010
25
Roth
Engineering Specifications
General
The Geothermal Heat Pump system and the earth loop shall be
one system and include all interconnecting piping and controls
to provide an efficient, harmoniously balanced package. All
units shall be tested and rated by ETL in accordance with UL
and CSA test laboratory safety and performance standards.
Each unit shall be computer run-tested at the factory. Capacities
and efficiencies shall be certified by AHRI and meet CSA
standards. Each unit shall be mounted on a pallet and shipped
in a corrugated box. Units shall be designed to operate with
entering liquid temperature between 25°F and 110°F.
Refrigerant Circuit
Compressor shall be hermetically sealed high efficient twostage scroll, quadruple-isolated. The air heat exchanger
(coated) coil shall use high-density technology, low-face velocity
and incorporate enhanced aluminum fins bonded to copper
tubing not less than three rows deep, and be e-coated for
corrosion protection. The coaxial water heat exchanger shall
be designed for low water pressure drop and constructed of
a an optional cupro-nickel or standard copper inner tube and
a steel outer tube with enhanced heat exchanger surface.
Water heat exchanger shall be encapsulated in an air-tight
foamed enclosure to prevent condensation at low temperature
operation. An optional domestic water desuperheater coil
of vented double wall copper construction for potable water
with high limit control shall be employed. The thermostatic
expansion device shall be bi-directional, mechanical controlled
and shall provide proper superheat over the entire liquid
temperature range with minimal hunting. The reversing valve
shall be of copper construction with a 24V AC solenoid valve
with fail-to-heating position.
Fan Motor & Assembly
The fan shall be a direct driven type. The motor shall be a
variable-speed ECM motor with direct drive blower that can be
easily removed from the heat pump without duct disconnection.
The ECM fan motor shall be soft starting and maintain constant
CFM over its operating static pressure range. The fan motor
shall be isolated from the housing by rubber grommets. The
ECM motors shall be long life ball bearing type.
Piping & Connections
Loop water connections (supply/return) shall be 1-inch FPT
fittings, which provide a union for easy connection. All water
piping shall be insulated to prevent condensation at low water
temperatures. The condensation connection shall be ¾“ female
threaded connection.
Note: Copper is the only acceptable material for piping
the desuperheater.
Secondary Drain Pan
A secondary drain pan should be field furnished and installed
under the unit, on horizontal unit or any other unit that is
mounted overhead in an attic or second floor, or where required
by local code.
Cabinet
The cabinet shall be of heavy gauge steel with powder coat
finish (front access panels shall be brushed stainless steel).
It shall incorporate a stainless steel condensate pan and be
installed with high-density insulation, with smoke and flame
spread of class 1 type and acoustic value of NRC 45. It shall be
oriented to allow complete component service access from all
sides. Electrical box shall be of heavy gauge steel located on
the top of the cabinet for eye-level access. A duct collar shall be
provided for the supply air opening (field-installed) and a return
air filter, rack & duct collar shall be provided on the return air
opening. Standard size 1-inch filters shall be provided with each.
Controls and Blower Motor
Units shall incorporate a microprocessor based control board.
All equipment shall incorporate both high and low pressure
switches and freeze protection (via flow switch) with total
refrigerant circuit lockout with manual reset. The board shall
provide a terminal block, LED status, fault indicators, fault
memory and accessory output. All units shall have knockouts
for entrance of line & low voltage wiring.
Roth
26
RXT Series Catalog - August 2010
Options, Accessories, & Warranty
Desuperheater
Optional desuperheater package of vented double wall copper
constructed heat exchanger coil suitable for potable water shall
be provided. The heat exchanger and hot water circulating
pump shall be factory installed inside the cabinet.
Field Installed Hydronic Pump Module (Flow Center)
Pump module shall be self contained and provide all liquid
flow, liquid fill and connection required for earth loop system.
The pumps shall be wired to the pump terminal strip inside unit
electric box.
Field Installed Thermostat
A multiple-stage manual or autochangeover electronic/digital
thermostat shall be provided with the unit. The thermostat shall
provide two or three stage heating and one or two stage cooling
with comfort temperature control. An AUTO-OFF fan switch, an
EMERG-HEAT OFF- COOL-AUTO system switch, and indicting
LEDs. The thermostat shall provide display in °F or °C. An
option remote outdoor sensor shall be available.
Field Installed Electric Auxiliary Heater
An Electric resistance heater shall provide emergency and/or
supplemental heating. Vertical unit shall have the control console
and element (coils) assembly mounted internally. The heater
shall provide operation control based upon signals from the
thermostat or compressor section controls. A Low Voltage wiring
harness shall be provided with electric heat package. (Vertical
Units Only)
Zone Control System
Call your Factory representative for information on Zoning.
RXT Series Catalog - August 2010
27
Roth
STANDARD RESIDENTIAL WARRANTY
Roth Industries, Inc. for brand: “TerraStar” Residential Single Family
10 YEAR LIMITED WARRANTY (10/5/5)
Roth Industries, Inc. warrants the refrigerant system components, to include the compressor, air coil, coaxial heat exchanger(s),
expansion valve and reversing valve, to be free from defects in material and workmanship for a period of ten (10) years from the
date of delivery to the original purchaser-user, transferable to new owner.
Roth Industries, Inc. warrants it’s geothermal unit against defect in materials and workmanship for five (5) years from the date of
delivery to the original purchaser-user, excluding damage due to rough handling, abuse, accident or casualty loss, exposure to
outdoor elements/outdoor installation, including but not limited to: salt air exposure, damage caused by exposure to the following
(whether indoors or outdoors): chlorine, airborne contaminants, other corrosive elements in the atmosphere, swimming pools, or hot
tubs, transferable to new owner. NOTE: Accessories included in the original installation (thermostat, flow center, auxiliary heater)
are covered by this five (5) year warranty but are not included in owner transfer.
Roth Industries, Inc. warrants the service labor allowances for five (5) years (second through the fifth years with the dealer/installer
warranting the first year) from date of delivery to the original purchaser/user, transferable to new owner, for the servicing, removing
or reinstalling parts for the refrigerant system, or for any defect in materials and workmanship inside the unit as set forth above.
NOTE: Labor allowances may not cover the full amount of labor charged, depending on the servicing contractor.
CONDITIONS AND EXCLUSIONS:
The Limited Warranty only applies if the following conditions are met.
A) This Limited Warranty will not apply and shall be null and void if the Roth Industries, Inc. serial number has been altered, defaced
or removed.
B) This Limited Warranty shall be null and void if the Roth Industries, Inc. unit has been disconnected or removed from the location
of original installation, or if the dealer/installer has not been paid in full.
C) This Limited Warranty shall not apply to unit failure or defunct caused by improper installation, field modification, improper supply
voltage, improper maintenance or misuse including operation during building construction, corrosion caused by airborne
contaminants, chlorine or salt air exposure, corrosive liquids or water, abuse, neglect, Act of God, outdoor installation or storage
prior to installation, damage from abuse, accident, fire, flood, and the like, or to defects or damage caused by the use of any
attachment, accessory or component not authorized by Roth Industries, Inc.
D) Replacement or repaired parts and components are warranted only for the remainder of the original warranty period, as stated
above.
E) This Limited Warranty applies only to Roth Industries, Inc. units installed by a factory trained, independent , Dealer of Roth
Industries, Inc. in the United States or Canada, and subjected to normal usage as described and rated on the applicable
specification sheet for each unit. This warranty shall not be valid if equipment is not installed in accordance with methods
prescribed on our technical data and manuals and in compliance with local codes. Dealer must complete the warranty registration
card supplied with the Roth Industries, Inc. unit which must then be endorsed by the original purchaser-user and mailed within ten
(10) days after initial installation. If warranty registration card is not returned, warranty shall commence at date unit was shipped
from Roth Industries, Inc. manufacturing facility.
F) The obligation for Roth Industries, Inc. under this Limited Warranty is expressly limited to replacement of any parts or
components as specified and found within the cabinet. Roth Industries, Inc. reserves the right to replace defective components
under warranty with new or reconditioned parts. Except as set forth above, this warranty does not cover any labor expenses for
service, nor for removing or reinstalling parts. Accessory, peripheral and ancillary parts and equipment are not covered by this
warranty.
G) Roth Industries, Inc. does not warrant equipment which has been custom built or modified to purchaser-user specifications.
Likewise, any field modification of any equipment shall also void this, and any and all warranties.
Notice: Outdoor or unconditioned space installation or storage prior to installation of any equipment shall cause this and all
warranties to be deemed void.
SHIPPING COSTS: The purchaser-user will be responsible for the cost of shipping warranty replacement parts from the Roth
Industries, Inc. manufacturing location to the distributor of the parts. Purchaser-user is also responsible for any shipping cost of
returning the failed part to the distributor.
THE FOREGOING LIMITIED WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES (AND IMPIED CONDITIONS IN CANADA),
EXPRESSED, IMPLIED, AND STATUTORY, INCLUDING WITHOUT LIMITATAION, THE IMPLIED WARRANTIES OF
MERCHANTABILITY, AND FITNESS FOR A PARTICULAR PURPOSE, AND ALL SUCH WARRANTIES EXPRESSED OR
IMPLIED, ARE EXCLUDED AND SHALL NOT APPLY TO THE GOODS SOLD. IN NO EVENT SHALL WARRANTOR BE LIABLE
FOR DIRECT, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES RESULTING FROM ANY DEFECT IN THE GOODS
EXCEPT TO THE EXTENT SET FORTH HEREIN.
(Some states do not allow exclusion or limitation of implied warranties or liability for incidental or consequential damage). For
additional information or assistance, contact the WARRANTOR, which is: Roth Industries, Inc., 268 Bellew Ave. S., Watertown, NY
13601
Roth
28
RXT Series Catalog - August 2010
RXT Series Catalog - August 2010
29
Roth
Revision Table
Date:
By:
Page:
Description:
August 2010
KT
All
First Published
Roth
30
RXT Series Catalog - August 2010
Roth Industries, Inc.
P.O. Box 245
Syracuse, NY 13211
888-266-7684 US
800-969-7684 CAN
866-462-2914 FAX
www.roth-america.com
info@roth-usa.com
*
**
***
* AHRI certification is shown as the Roth brand under the Enertech Manufacturing certification reference number
**Roth Industries geothermal heat pumps are shown as a multiple listing of Enertech Manufacturing’s ETL certification
*** Roth geothermal heat pumps are listed as a brand under Enertech Manufacturing’s Energy Star ratings