NTI TRX085 - Page 26

26
420012001500 - 03182024 - Rev. 04
I
L
A
B
E
C
20
0
250
100 15 0
50 200
20
0
80
60
40
psi
I
L
A
B
D
E
C
20
0
250
100 150
50 200
20
0
80
60
40
psi
I
L
A
B
D
E
C
20
0
250
100 150
50 200
20
0
80
60
40
psi
I
L
A
E
C
20
0
250
100 150
50 200
20
0
80
60
40
psi
Connect the 3/4” DHW inlet and outlet pipes. A shut-off valve between the city water supply and DHW inlet is recommended for ease of service.
Connect the 1” CH return and supply pipes. Isolation valves are recommended for ease of service.
TRX150CTRX085 or TRX120 with Indirect Water Heater
TRX085 or TRX120 only Heating TRX110C
Figure 14 - Water / Gas Connections
Part 4 - Water Piping
Model TRX085 TRX120 Model TRX110C TRX150C
A - Central Heating Supply 1” A - Central Heating Supply 1”
B - Return from Indirect Water Heater 3/4” B - Domestic Hot Water Outlet 3/4”
C - Gas Inlet 3/4” C - Gas Inlet 3/4”
D - Not Used D - Domestic Hot Water Inlet 3/4”
E - Central Heating Return 1” E - Central Heating Return 1”
I - Condensate Discharge I - Condensate Discharge
L - Drain Valve L - Drain Valve