NTI INSTALLATION MANUALS

Part 3 - Prepare the Boiler for Installation

3 4 "

3 4 "

3 4 "

3 8 "

7

5 8 "

3

9

6

3

7 8 "

1

F

3 4 "

19

1

8 "

1

4 "

34

38

A B C D E

3 8 " 1 2 "

2

1 4 "

3 4 "

5 8 "

2

2

2

3"

6

5 8 "

5 8 "

1 4 "

3

2

8

3"

1 2 "

18

Figure 7 - Boiler Dimensions - NOTE: All Dimensions Are Approximate

Model

TRX150 and TRX199

Model

TRX199C

1 1/4” NPT

1 1/4” NPT

A - Central Heating Supply

A - Central Heating Supply

3/4” NPT

3/4” NPT

B - Supply to Indirect Water Heater

B - Domestic Hot Water Outlet

3/4” NPT

3/4” NPT

C - Gas Inlet

C - Gas Inlet

N/A

3/4” NPT

D

D - Domestic Hot Water Inlet

1 1/4” NPT

1 1/4” NPT

E - Central Heating Return

E - Central Heating Return

3/4” NPT

3/4” NPT

F - Pressure Relief Valve

F - Pressure Relief Valve

Table 9 - Boiler Connection Sizes

18