- COMBOMAX Electricboiler withintegratedinstantaneouswaterheater

COMBOMAX
MC
Electric boiler Set-up, use and care guide (revised January 2006), Page 2.
Section 1 : Technical specifications
Table 1: Boiler specifications 240 Vac (single phase) :
Power Nominal load in amps
Model
Kw BTU/h
Heating
elements
Including
the
circulator
Number of
elements
Stages \
Thermostats \
pilots
Wire
Cu
Fuse
Amps
COMBOMAX XX-8 8 27 296 33.3 34.3
1 X 3KW
1 X 5KW
2 8 50
COMBOMAX XX-10 10 34 120 41.6 42.6 2 X 5KW 2 6 60
COMBOMAX XX-15 15 51 180 62.5 63.5
2 X 3KW
2 X 4.5KW
4 3 100
COMBOMAX XX-18 18 61 416 75.0 76.0 4 X 4.5KW 4 3 100
COMBOMAX XX-20 20 68 240 83.4 84.4 4 X 5KW 4 2 125
COMBOMAX XX-24 24 81 888 100.0 101.0 4 X 6KW 4 1 125
Table 2 : Boiler and connection dimensions
Model Capacity Utility
connection
Boiler
connection
Height Diam. Ship.
weight
Combomax 23 30 Gal US 3/4 ’’ Sweat F 1’’ NPT F 49’’ 18’’ 265 lbs
Combomax 34 40 Gal US 3/4 ’’ Sweat F 1’’ NPT F 65’’ 18’’ 315 lbs
Combomax 44 52 Gal US 3/4 ’’ Sweat F 1’’ NPT F 55’’ 22’’ 345 lbs
Combomax 64 76 Gal US 3/4 ’’ Sweat F 1’’ NPT F 67’’ 24’’ 425 lbs
Table 3 : Domestic hot water production capacity in US gallons
1st hour Continuous Model
110F 140F 180F 110F 140F 180F
COMBOMAX 23-8 75 44 28 47 33 24
COMBOMAX 23-10 87 52 33 59 41 29
COMBOMAX 23-15 116 73 48 88 62 44
COMBOMAX 23-18 134 85 57 106 74 53
COMBOMAX 23-20 145 93 63 117 82 59
COMBOMAX 23-24 169 110 75 141 99 71
1st hour Continuous
Model
110F 140F 180F 110F 140F 180F
COMBOMAX 34-8 85 48 29 47 33 24
COMBOMAX 34-10 97 56 34 59 41 29
COMBOMAX 34-15 126 77 49 88 62 44
COMBOMAX 34-18 144 89 58 106 74 53
COMBOMAX 34-20 155 97 64 117 82 59
COMBOMAX 34-24 179 114
76
141 99 71
1st hour Continuous
Model
110F 140F 180F 110F 140F 180F
COMBOMAX 44-8 97 53 31 47 33 24
COMBOMAX 44-10 109 61 36 59 41 29
COMBOMAX 44-15 138 82 51 88 62 44
COMBOMAX 44-18 156 94 60 106 74 53
COMBOMAX 44-20 167 102 66 117 82 59
COMBOMAX 44-24 191 119 78 141 99 71
1st hour Continuous
Model
110F 140F 180F 110F 140F 180F
COMBOMAX 64-8 121 63 34 47 33 24
COMBOMAX 64-10 133 71 39 59 41 29
COMBOMAX 64-15 162 92 54 88 62 44
COMBOMAX 64-18 180 104 63 106 74 53
COMBOMAX 64-20 191 112 69 117 82 59
COMBOMAX 64-24 215 129 81 141 99 71
With domestic cold water at 40°F and heating water at 180°F
Operating temperature : from 50°F to 190°F; Maximum operating pressure: 30 psi