59
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
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.
Install one system controller
(SC-201-6M) for every six units.
(120VAC)
WIRING THOROUGHWAYS
WIRING THOROUGHWAYS
GAS INLET (3/4")
COLD WATER INLET (3/4")
HOT WATER OUTLET (3/4")
366mm [14.4"]
279mm [11"]
65mm [2.6"]
135mm [5.3"]
70mm [2.8"]
136mm [5.4"]
159mm [6.3"]
175mm [6.9"]
155mm [6.1"]
100mm [3.9"]
195mm [7.7"]
73mm [2.9"]
170mm [6.7"]
140mm [5.5"]
100mm [3.9"]
70mm [2.8"]
36mm [1.4"]
665mm [26.2"]
170mm [6.7"]
140mm [5.5"]
100mm [3.9"]
70mm [2.8"]
36mm [1.4"]
40mm [1.6"]
FROM BOTTOM OF CASE
HEIGHT OF EACH FITTING
(WATER FILTER)
95mm [3.7"]
77mm [3"]
586mm [23.1"]
10mm [0.4"]
29mm [1.1"]
240mm [9.4"]
10mm [0.4"]
(120VAC)
WIRING THROUGHWAYS
(WATER FILTER)
WATER DRAIN VALVE
HOT WATER OUTLET
WATER DRAIN VALVE
COLD WATER INLET
GAS INLET
WIRING THROUGHWAY
450mm [17.7"]
LED
FLUE COLLAR
AIR INLET
619mm [24.4"]
234mm [9.2"]
150mm [5.9"]
448mm [17.6"]
468mm [18.4"]
56mm [2.2"]
GAS INLET
55mm [2.2"]
COLD WATER INLET
44mm [1.7"]
HOT WAER OUTLET
NC250-DV-ASME
< mm [inch] >
(VIEW FROM TOP)
4- 13mm [ 0.5"]
6-6 x 10mm [0.24 x 0.4"] OBLONG HOLE
100mm [ 4"]
100mm [ 4"]
4- 13mm [ 0.5"]
6-6 x 10mm [0.24 x 0.4"] OBLONG HOLE
