Installation Manual

Demand Duo™ R-Series Installation and Operation Manual 34
A Hot Water Outlet *
B Hot Water Outlet Valve *
C Temperature-Pressure Relief
Valve
D Cold and Hot Unions *
E Cold Water Supply Valve *
F Cold Water Supply *
G Thermal Expansion Tank *
H 6 in. B-Vent *
I Operation Unit / Temperature
Control
J Drain Pan *
K Pressure Relief Valve Dis-
charge Pipe (do not cap,
plug, or reduce)
L Drip Leg (Sediment Trap)
M Gas Union
N Gas Valve *
O Thermostatic Mixing Valve *
P Non-Tempered Return Line *
Q Non-Tempered Supply Line *
* Field Supplied
Mixing Valve Installation
A
B
H
D
C
I
K
J
E
N
M
L
Cold Water
Supply
Q
O
P
D
F
G
Hot Water Supply
Figure 30
Figure 31