C. Using the required wire gage as per table 3 that meets all applicable electrical codes for the size of the
required breakers, run a ground wire and two pair of wires per breaker from the main breaker panel to the
tankless water heater unit. Refer to the corresponding wire connections to breakers chart above.
E. Double check the electrical connections to make sure they are correct and all the wire connections are tight
and secure, and the unit has been connected to a ground in accordance with applicable codes.
D. The ground wire must be connected to "ground" at the circuit breaker panel.
Model
MS150C2TMU
MS180C2TMU
MS210C2TMU
MS240C2TMU
MS270C2TMU
Phase
1
1
1
1
1
Voltage
V
240 V
240V
240 V
240 V
240 V
Wattage
kW
15kw
18kw
21kw
24kw
27kw
Max.
amp.
load
A
63
75
88
100
113
Min. required circuit breaker
A
2 X 40
2 X 50
3X 40
3X 40
3X 50
Min. wire size
AWG cooper
2 X 8
2 X 8
3 X 8
3 X 8
3 X 8
Min. water flow to activate
GPM / L/min.
0.84/ 3.2
0.84/ 3.2
0.84/ 3.2
0.84/ 3.2
0.84/ 3.2
Working pressure
PSI/bar
Max.150/10
Weight
lb
17.6
Product Dimensions
in
16.1 x 11 x 3.5
Water connections
NPT
3/4”
3/4”
3/4”
3/4”
3/4”
17.6
17.6
17.6
17.6
16.1 x 11 x 3.5
16.1 x 11 x 3.5
16.1 x 11 x 3.5
16.1 x 11 x 3.5
Check your local electrical code requirements for different voltage application
Model
MS120C2T_U
MS150C2T_U
MS180C2T_U
MS210C2T_U
MS240C2T_U
MS270C2T_U
Phase
1
1
1
1
1
1
Voltage
V
240
240
240
240
240
240
Wattage
kW
12
15
18
21
24
27
Max. Amp. Load @ 240V
A
50
63
75
88
100
113
No. of circuits
n
1
2
2
3
3
3
Min. required double pole
circuit breaker
A
60
2 x
40
2
x
50
3 x
40
3 x
40
3 x 50
Min. wire size
AWG cooper
8
2 x 8
2 x 8
3 x 8
3 x 8
3 x 8
Min. water flow to activate
GPM
/
L/min.
0.84 / 3.2
0.84 / 3.2
0.84 / 3.2
0.84 / 3.2
0.84 / 3.2
0.84 / 3.2
Working pressure
PSI/bar
Max.150/10
Weight
kg
lb
3.6
7.9
5.3
11.7
5.3
11.7
5.5
12.1
5.5
12.1
5.5
12.1
Product Dimensions
mm
in.
385x260x93
15.1x10.2x3.7
385x260x93
15.1x10.2x3.7
385x260x93
15.1x10.2x3.7
385x260x93
15.1x10.2x3.7
385x260x93
15.1x10.2x3.7
385x260x93
15.1x10.2x3.7
Water connections
NPT
1/2”
3/4”
3/4”
3/4”
3/4”
3/4”
No. of circuits
2
2
3
3
3
15
@ 240V
Table 4
Table 5
Injected Mold Model
Stainless Steel Model