22
Enertech Global
IOM, WD Models
Section 9: Equipment Start-Up Procedures
Performance Check
Heat of Extraction(HE)/Rejection(HR)
Record information on the Unit Start-up Form
Equipment should be in operation for a minimum of 10
minutes in either mode – WITH THE HOT WATER GENERATOR
TURNED OFF.
1. Determine flow rate in gallons per minute
a. Check entering water temperature
b. Check entering water pressure
c. Check leaving water pressure
Pressure Drop Table
Once this information is recorded, find corresponding entering
water temperature column in Specification Manual for unit.
Find pressure differential in PSI column in Spec Manual. Then
read the GPM column in Spec Manual to determine flow in
GPM.
2. Check leaving water temperature of unit.
FORMULA: GPM x water temp diff, x 485 (antifreeze) or 500
(fresh water) = HE or HR in BTU/HR
A 10% variance from Spec Manual is allowed. Always use the
same pressure gauge & temperature measuring device.
Water flow must be in range of Specification Manual. If system
has too much water flow, performance problems should be
expected.
COP = Coefficient of Performance = BTU Output / BTU Input
HR = Total Heat Of Rejection, Btu/hr
DH = Desuperheater Capacity, Btu/hr
KW = Total Power Unit Input, Kilowatts
EER = Energy Efficiency Ratio = BTU output/Watts input
LWT = Leaving Source Water Temperature, Fahrenheit
EST = Entering Source Water Temperature, Fahrenheit
LLT = Leaving Load Water Temperature, Fahrenheit
ELT = Entering Load Water Temperature, Fahrenheit
TC = Total Cooling Capacity, Btu/hr
GPM = Water Flow, Gallons Per Minute
HC = Heating Capacity, Btu/hr
HE = Total Heat Of Extraction, Btu/hr
WPD = Water Pressure Drop, PSI & Feet of Water
Glossary
Specification Glossary, Calculations
110 °F 90 °F 70 °F 50
°F
110 °F 90 °F 70 °F 50 °F 25 °F 110 °F 90 °F 70 °F 50 °F 25 °F 110 °F 90 °F 70 °F 50 °F 25 °F
PSI
PSI
PSI
PSI
PSI
PSI
PSI
PSI
PSI
PSI
PSI
PSI
PSI
PSI
PSI
PSI
PSI
PSI
PSI
30
0.7
0.7
0.8
0.8
0.7
0.8
0.8
0.8
1.0
0.7
0.8
0.9
1.0
1.1
0.9
0.9
1.0
1.1
1.5
37.5
1.1
1.1
1.1
1.2
1.1
1.1
1.2
1.3
1.5
1.0
1.2
1.3
1.4
1.7
1.3
1.4
1.5
1.7
2.0
45
1.5
1.5
1.6
1.7
1.5
1.6
1.7
1.8
2.1
1.5
1.6
1.8
2.0
2.3
1.8
1.9
2.1
2.3
2.7
52.5
2.1
2.1
2.1
2.2
2.0
2.1
2.2
2.4
2.7
2.0
2.1
2.3
2.6
3.0
2.3
2.5
2.7
3.0
3.5
60
2.7
2.7
2.7
2.8
2.7
2.7
2.8
3.0
3.4
2.6
2.7
3.0
3.3
3.8
2.9
3.2
3.4
3.8
4.4
65
3.1
3.2
3.2
3.2
3.1
3.1
3.2
3.5
4.0
3.1
3.1
3.4
3.8
4.4
3.4
3.6
4.0
4.4
5.1
70
3.6
3.7
3.7
3.7
3.6
3.6
3.7
4.0
4.5
3.5
3.6
3.9
4.3
5.0
3.9
4.2
4.5
5.0
5.8
30
0.8
0.8
0.9
1.0
0.9
0.9
1.0
1.0
1.2
0.8
0.9
1.0
1.1
1.3
1.0
1.1
1.2
1.3
1.7
37.5
1.3
1.3
1.3
1.4
1.3
1.3
1.4
1.6
1.8
1.2
1.4
1.5
1.7
2.0
1.5
1.6
1.8
2.0
2.4
45
1.8
1.8
1.9
2.0
1.8
1.9
2.0
2.1
2.4
1.8
1.9
2.1
2.3
2.7
2.1
2.2
2.4
2.7
3.2
52.5
2.5
2.5
2.5
2.6
2.4
2.5
2.6
2.8
3.2
2.4
2.5
2.7
3.0
3.5
2.7
2.9
3.2
3.5
4.2
60
3.2
3.2
3.3
3.3
3.2
3.2
3.3
3.6
4.0
3.1
3.2
3.5
3.8
4.5
3.4
3.7
4.0
4.5
5.3
65
3.7
3.8
3.8
3.9
3.7
3.7
3.8
4.1
4.7
3.6
3.7
4.0
4.4
5.2
4.0
4.3
4.7
5.2
6.0
70
4.3
4.4
4.4
4.5
4.3
4.3
4.4
4.7
5.3
4.2
4.3
4.6
5.0
5.9
4.6
4.9
5.3
5.9
6.9
45
1.0
1.0
1.0
1.1
1.0
1.0
1.1
1.2
1.3
0.9
1.0
1.1
1.2
1.4
1.1
1.2
1.3
1.4
1.7
54
1.4
1.4
1.4
1.5
1.4
1.4
1.5
1.6
1.8
1.3
1.4
1.6
1.7
1.9
1.6
1.7
1.8
2.0
2.3
70
2.3
2.3
2.3
2.4
2.2
2.3
2.4
2.6
2.8
2.2
2.3
2.5
2.7
3.1
2.5
2.7
2.9
3.1
3.6
78
2.8
2.8
2.9
3.0
2.8
2.8
2.9
3.1
3.5
2.7
2.8
3.1
3.3
3.8
3.1
3.3
3.5
3.8
4.3
90
3.7
3.8
3.8
3.9
3.7
3.7
3.8
4.1
4.5
3.6
3.7
4.0
4.3
4.9
4.0
4.2
4.5
4.9
5.6
95
4.2
4.2
4.2
4.3
4.1
4.1
4.2
4.5
5.0
4.1
4.1
4.4
4.8
5.4
4.4
4.7
5.0
5.4
6.2
100
4.6
4.7
4.7
4.7
4.5
4.6
4.7
4.9
5.4
4.5
4.6
4.9
5.2
5.9
4.9
5.1
5.5
6.0
6.8
45
1.0
1.1
1.1
1.2
1.1
1.1
1.2
1.3
1.4
1.0
1.1
1.2
1.3
1.5
1.2
1.3
1.4
1.6
1.9
54
1.5
1.5
1.6
1.6
1.5
1.6
1.6
1.8
2.0
1.5
1.6
1.7
1.9
2.1
1.7
1.8
2.0
2.2
2.6
70
2.5
2.5
2.5
2.6
2.5
2.5
2.6
2.8
3.1
2.4
2.5
2.8
3.0
3.4
2.7
2.9
3.1
3.4
3.9
78
3.1
3.1
3.1
3.2
3.0
3.1
3.2
3.4
3.8
3.0
3.1
3.4
3.6
4.1
3.3
3.6
3.8
4.2
4.8
90
4.1
4.1
4.2
4.2
4.0
4.1
4.2
4.4
4.9
4.0
4.1
4.4
4.7
5.4
4.3
4.6
5.0
5.4
6.2
95
4.6
4.6
4.6
4.7
4.5
4.5
4.6
4.9
5.4
4.4
4.5
4.8
5.2
5.9
4.8
5.1
5.5
6.0
6.8
100
5.1
5.1
5.1
5.2
5.0
5.0
5.1
5.4
5.9
4.9
5.0
5.3
5.7
6.5
5.3
5.6
6.0
6.5
7.5
Model
BPHE
GPM
Pressure Drop, Compressor Off
Water
20% (by volume)
Methanol Water Solution
20% (by volume)
Ethanol Water Solution
30% (by volume) Propylene
Glycol Water Solution
WD240
Source
Pressure
Drop
Load
Pressure
Drop
WD360
Source
Pressure
Drop
Load
Pressure
Drop
1. Pressure drop data are BPHE prpessure drop data, with compressor off.
2. Pressure drop data accurate within ±25%.
3. Interpolation of unit pressure drop data is permissible; extrapolation is not.
4. Pressure drop data is a result of lab testing and is not related to warranty.
5. Due to variations in installation, actual unit WPD may vary from the tabulated data.