Thermo BTH Ultra User Manual

BTH ULTRA Electric Boilers Installation & Operation manual (Revision: May 2015) 2 .
Section 1: Technical specifications
Table 1: Technical data on boilers operating at 240 Vac /1ph
1
:
Suggested size at 240V/1ph.
3
Cable
Capacity
(KW)
Amps
2
BTH
ULTRA
208V 240V 208V 240V
Heating
Elements (240 V)
Stages
Cu Al
Breaker
(Amp.)
12 9,0 12 43.5 50 4 x 3 KW 4 6 4 70
15 11.2 15 54.3 62.5
2 x 3 KW +
2 x 4.5 KW
4 6 4 80
18 13.5 18 65.2 75 4 x 4.5 KW 4 4 2 100
20 15 20 72.5 83.3 4 x 5 KW 4 3 2 110
24 18 24 87 100 4 x 6 KW 4 2 0 125
27 20.2 27 97.9 112.5
6 x 4.5 KW 6
1 x 1
or
2 x 6
4
1 x 00
or
2 x 4
4
2 x 80
or
150
29 21.7 29 104 120
4 x 5 KW +
2 x 4.5 KW
6
1 x 1
or
2 x 6
4
1 x 00
or
2 x 4
4
2 x 80
or
175
33 25 33 119.6
137.5
3 x 5 KW +
3 x 6 KW
6 2 x 4
5
2 x 2
5
2 x 100
36 27 36 130.5
150 6 x 6 KW 6 2 x 4
5
2 x 2
5
2 x 100
1
Electrical supply 120/240V or 120/208V – 1ph (L1-N-L2) with three conductors and a ground or a supply
with two conductors 240V or 208V – 1ph (L1-L2) with a ground if the application does not require a 120V
electrical supply for external accessories such as a pump, etc
2
Add the amperage of the circulating pump and other external accessories if they are connected to the
boiler (max. 5A).
3
A higher cable size could be required. In all cases the local electrical code has priority. The electrician has
the responsibility to select the appropriate size.
4
Two main terminal blocks that could be converted to one on the job site.
5
Two double pole breakers
1 kW = 3412 Btu

Thermo BTH Ultra Specifications

General

Brand	Thermo
Model	BTH Ultra
Category	Boiler
Language	English