BTH Electric Boilers USE & CARE MANUAL
(Revision Jun 2014)
, Page
2.
Ratings & Specifications at 240** Vac / 1ph (3 wires L1-N-L2) :
MINI BTH
Cable**!
90C/240V
Breaker!
**
Model
Capacity*
KW/BTU/H
at 240V
Amps!*
at 240V
Electric
Element(s)
240V
Stage(
s)
Cu
Al
Amp. at
240V
MINI BTH 3
3 / 10,235
12.5
1 x 3 KW
1
12
10
20
MINI BTH 4.5
4.5 / 15,350
18.7
1 x 4.5 KW
1
12
10
25
MINI BTH 6
6 / 20,470
25
1 x 6 KW
1
8
6
40
MINI BTH 7.5
7.5 / 25,590
31
1X4.5+1X3KW
2
8
6
40
MINI BTH 9
9 / 30,710
37.5
2 x 4.5 KW
2
8
6
50
MINI BTH 12
12 / 40,940
50
2 x 6 KW
2
6
6
70
-Electric supply 120/240V or 120/208V 1 phase (L1-N-L2) with three conductors anc a ground
-Copper or Aluminum conductors can be used.
! Add the amperage (Max. 5amp) of the circulating pump if it is connected directly to the boiler
* On applications working at 208V/1ph, multiply the capacity by .75 and the amperage by .87
** A higher capacity cable could be required. In all cases the local Electrical Code has priority.
Dimensions
Connections
Overall dimensions
Inlet/heating return
3/4 “ NPT Fem.
Height
21-1/2 in.
Outlet/ heating supply
3/4 “ NPT Fem.
Width
9in.
Pressure relief valve
3/4 “ NPT Fem.
Depth
9 in.
Drain valve
3/4 “ NPT Fem.
Shipment weight
40 lbs.
Operating temp. range: 50°F to 190°F. Maximum pressure : 30 psi
Boilers requiring to be built in conformity to ASME standards may be required in some
provinces or state. If such models are required, model with an “H” suffix shall be used.
Figure 1.
