7
TABLE 5
HYDRA - Technical Specifications
TABLE 3
Power vs Outside Temperature (with modulation)
TABLE 4
Element De-Activation Sequence (with modulation)
RATING AND PERFORMANCE
Power (Kw) 9 15 18 20 24
Net capacity (BTU/h) 30 708 51 180 61 416 68 240 81 888
ELECTRICAL SYSTEM
Volts - Hertz - Phase
Electrical element #1 (Kw) 35554
Electrical element #2 (Kw) 35554
Electrical element #3 (Kw) 35554
Electrical element #4 (Kw) N/A N/A 3 5 4
Electrical element #5 (Kw) N/A N/A N/A N/A 4
Electrical element #6 (Kw) N/A N/A N/A N/A 4
Consumption (Amp) 38 62 75 83 100
Circuit Amperage
(wire sizing)
48 78 94 104 125
Maximum recommended circuit breaker (Amp) 50 80 100 125 125
Recommended fuses (Amp)
1
50 80 100 110 125
GENERAL INFORMATION
Supply - Return
Minimum water flow USG/min (L/min.) 3.25 (12.3) 5.15 (19.5) 6.44 (24.4) 6.84 (25.9) 8.2 (31.0)
24 VAC output ("C-24 VAC" terminals)
Overall dimensions (width x depth x height)
Shipping weight
1" NPT male - 1" NPT female
120 / 240 - 60 - 1
25.5" x 14" x 16"
50 kg / 110 lbs
1) Alw ays refer to applicable local and national codes.
20 VA
HYDRA09 HYDRA15 HYDRA18 HYDRA20 HYDRA24
0°C (32°F ) or less 9 15182024
0°C (32°F) or more 6 10 13 15 20
5°C (41°F) or more 6 10 10 10 16
10°C (50°F) or more 6 10101012
Power (Kw)
Temperature
1
st
2
nd
3
rd
0°C (32°F) to 5°C (41°F) #3
5°C (41°F) to 10°C (50°F) #3 #4
10°C (50°F) to 15°C (59°F) #3 #4 #5
Outside Temperature
Element De-Activated
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