COMBOMAX
MC
Electric boiler Set-up, use and care guide
(revised Oct 2015)
, Page
2.
Section 1 : Technical specifications
Table 1: Boiler specifications 240* Vac/1ph (3 wires L1/L2/N):
Modèle
Kw
À
240
V*
BTU/h
Amp.
Heating
elements
Heating
elements
Stage
Cable
(cu)**
Fuse **
COMBOMAX XX-8
8
27 296
33.3
1 X 3KW
1 X 5KW
2
8
50
COMBOMAX XX-10
10
34 120
41.6
2 X 5KW
2
6
60
COMBOMAX XX-15
15
51 180
62.5
2 X 3KW
2 X 4.5KW
4
6
80
COMBOMAX XX-18
18
61 416
75.0
4 X 4.5KW
4
4
100
COMBOMAX XX-20
20
68 240
83.4
4 X 5KW
4
3
110
COMBOMAX XX-24
24
81 888
100.0
4 X 6KW
4
3
125
*Can be also connected on an electrical supply at 208V/1ph giving 75% of the nominal capacity at 240V.
**Add amperage of the pump when required (8amp./1/3hp max). Local Electrical codes may require
different cable gauge according to the type of installation.
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
