27
15.
Dimensions
16.
Multi-System
A. Installation without a recirculation system
• Insulate or apply heating materials to both the cold water supply piping and the hot water piping to
prevent freezing during cold weather and to prevent heat loss through the piping.
G
(1 1/4"-2")
(1 1/4"-2")
Unit No.6
Unit No.2
Unit
No.1
System Controller
System Select Connector
Hot Water Pipe
* Do not connect to
the connector.
* Disconnect this
connector
on units 2-6 also
Gas pipe
Cold Water Supply Pipe
Remote Controller
Disconnect this Connector
Disconnect for system controller
Install one system controller
(SC-201-6M) for every six units.
NC250-SV-ASME
44mm [1.7"]
55mm [2.2"]
GAS INLET
56mm [2.2"]
468mm [18.4"]
448mm [17.6"]
619mm [24.4"]
LED
AIR INLET
450mm [17.7"]
GAS INLET
95mm [3.7"]
40mm [1.6"]
10mm [0.4"]
240mm [9.4"]
29mm [1.1"]
586mm [23.1"]
69mm [2.7"]
AIR INLET
(mm [inch] )
36mm [1.4"]
70mm [2.8"]
100mm [3.9"]
140mm [5.5"]
170mm [6.7"]
665mm [26.2"]
36mm [1.4"]
70mm [2.8"]
100mm [3.9"]
140mm [5.5"]
170mm [6.7"]
73mm [2.9"]
155mm [6.1"]
100mm [3.9"]
159mm [6.3"]
136mm [5.4"]
175mm [6.9"]
70mm [2.8"]
135mm [5.3"]
65mm [2.6"]
GAS INLET (3/4")
HEIGHT OF EACH FITTING
FROM BOTTOM OF CASE
HOT WATER OUTLET
COLD WATER INLET
4- 13mm [ 0.5"]
6-6 x 10mm [0.24 x 0.4"] OBLONG HOLE
10mm [0.4"]
4- 13mm [ 0.5"]
6-6 x 10mm [0.24 x 0.4"] OBLONG HOLE
FLUE COLLAR
100mm [ 4"]
WIRING THROUGHWAYS
WATER DRAIN VALVE
(WATER FILTER)
HOT WATER OUTLET
WATER DRAIN VALVE
COLD WATER INLET
WIRING THROUGHWAY
(120VAC)
(VIEW FROM TOP)
366mm [14.4"]
279mm [11"]
195mm [7.7"]
(120VAC)
WIRING THOROUGHWAY
COLD WATER INLET (3/4")
WIRING THOROUGHWAYS
HOT WATER OUTLET (3/4")
