NTI Trinity Tft285 - Page 45

Tft Series Installation and Operation Instructions │Trinity
45
Table 10-4 Circulator and Pipe Size Requirements
Model
Temp.
Rise (ºF)
Boiler Flow
Rate (GPM)
Boiler Head
Loss (ft)
Minimum
Pipe Size
Minimum Primary Loop Pump Size
(1)
B&G
Grundfos
Taco
Armstrong
Tft60
20
6
2.7
1”
NRF-22
UPS15-58
0015-MS
Astro 30
25
4
1.6
¾”
NRF-22
UPS15-58
0015-MS
Astro 30
35
3
1.0
¾”
NRF-9
UPS15-58
0015-MS
Astro 30
Tft85
20
8
3.4
1”
NRF-22
UPS15-58
0015-MS
Astro 30
25
6
2.7
1”
NRF-22
UPS15-58
0015-MS
Astro 30
35
4
1.6
¾”
NRF-22
UPS15-58
0015-MS
Astro 30
Tft110
20
10
3.9
1”
2
NRF-22
2
UPS15-58
0015-MS
Astro 30
2
25
8
3.4
1”
NRF-22
UPS15-58
0015-MS
Astro 30
35
6
2.7
1”
NRF-22
UPS15-58
0015-MS
Astro 30
Tft154
20
14
5.3
1-1/4”
NRF-25
UPS26-99
0015-MS
E7
25
11
3.9
1-1/4”
NRF-22
UPS15-58
0015-MS
Astro 30
35
8
3.1
1”
NRF-22
UPS15-58
0015-MS
Astro 30
Tft201
20
18
7.5
1-1/2”
NRF-36
UPS26-99
0013-MS
E7
25
15
5.8
1-1/4”
NRF-36
UPS26-99
0013-MS
E7
35
11
3.9
1-1/4”
NRF-22
UPS15-58
0015-MS
Astro 30
Tft285
20
26
14
1-1/2”
NRF-36
UPS26-99
0013-MS
E8
25
21
9.8
1-1/2”
NRF-36
UPS26-99
0013-MS
E7
35
15
5.7
1-1/4”
NRF-25
UPS26-99
0015-MS
E7
Tft340
20
32
7.9
2”
NRF-36
UPS26-99
0012-MS
E8
25
25
8.2
1-1/2”
NRF-36
UPS26-99
0013-MS
E7
35
18
5.7
1-1/2”
NRF-36
UPS26-99
0013-MS
E7
Tft399
20
37
8.2
2”
PL55
UPS26-150
2400-60
E11
25
29
5.7
2”
NRF-36
UPS26-99
0012-MS
E8
35
21
3.9
1-1/2”
NRF-36
UPS26-99
0013-MS
E7
Notes:
1
Pump sizing based on Primary/Secondary plumbing configuration with specified minimum pipe diameter with up to 50’
equivalent length.
2
Upsize piping to 1-1/4” if using Armstrong Astro 30 or B&G NRF-22; alternatively upsize circulator to Astro 50 or NRF-
25.