Submittal Sheet

Quick Sizing Chart
Boiler Output Finned Tube Convectors Cast Iron Cast Iron
Net BTU/H Baseboard or Unit Heaters Radiators Baseboard
Suggested Selection
20,000 ETX-15 ETX-15 ETX-15 ETX-15
30,000 ETX-15 ETX-15 ETX-15 ETX-15
40,000 ETX-15 ETX-30 ETX-30 ETX-30
50,000 ETX-15 ETX-30 ETX-30 ETX-30
60,000 ETX-30 ETX-30 ETX-60 ETX-60
70,000 ETX-30 ETX-30 ETX-60 ETX-60
80,000 ETX-30 ETX-30 ETX-60 ETX-60
90,000 ETX-30 ETX-30 ETX-60 ETX-60
100,000 ETX-30 ETX-60 ETX-60 ETX-60
125,000 ETX-30 ETX-60 ETX-60 ETX-90
150,000 ETX-30 ETX-60 ETX-90 ETX-90
175,000 ETX-60 ETX-60 ETX-90 ETX-90
200,000 ETX-60 ETX-60 ETX-90 ETX-90
250,000 ETSX-30 ETSX-30 ETSX-40 ETSX-30
300,000 ETSX-30 ETSX-40 ETSX-40 ETSX-30
350,000 ETSX-30 ETSX-40 ETSX-60 ETSX-30
400,000 ETSX-30 ETSX-60 ETSX-90 ETSX-40
500,000 ETSX-40 ETSX-60 ETSX-90 ETSX-40
600,000 ETSX-40 ETSX-90 ETSX-90 ETSX-60
700,000 ETSX-60 ETSX-90 ETSX-90 ETSX-60
800,000 ETSX-60 ETSX-110 ETSX-110 ETSX-90
900,000 ETSX-60 ETSX-110 ETSX-110 ETSX-90
1,000,000 ETSX-90 ETSX-110 ETSX-110 ETSX-90
1,200,000 ETSX-90 ETSX-110 ETSX-160 ETSX-90
1,400,000 ETSX-110 ETSX-160 ETSX-160 ETSX-110
1,500,000 ETSX-110 ETSX-160 ETSX-110 (2) ETSX-110
Note:
These recommendations are based on the average water volume of typical closed systems.
Fill pressure 12psi (83 kPa), relief valve set pressure of 30psi (207 kPa) and system temperature of 200˚F (93ºC)
Dimensions – Weights
MODEL TANK VOL. ACCEPT. CONNECTION DIAMETER HEIGHT WEIGHT
VOL.
gal. @12 psi in mm. in mm. lbs. kgs.
ETX-15 2.1 1.0
1
/2" MNPT 8 203 12
1
/2 318 5.0 2.3
ETX-30 4.5 2.5
1
/2" MNPT 11 279 14 356 10.0 4.54
ETX-60 6.0 3.0
1
/2" MNPT 11
3
/8 290 17
3
/16 437 11.5 5.22
ETX-90 15.0 6.0
3
/4" MNPT 16 406 20
13
/16 528 28.0 12.70
ETSX-30 15.0 6.0 1" FNPT 16 406 21
11
/16 551 32.0 14.51
ETSX-40 20.0 8.0 1" FNPT 16 406 28
13
/16 732 39.0 17.69
ETSX-60 33.0 13.3 1" FNPT 16 406 42
13
/16 1087 57.0 28.85
ETSX-90 44.0 17.7 1
1
/4" FNPT 21 533 36
3
/16 919 72.0 32.66
ETSX-110 62.0 24.9 1
1
/4" FNPT 21 533 47
7
/8 1217 112.0 50.80
ETSX-160 81.0 32.6 1
1
/4" FNPT 21 533 62 1575 123.0 55.79
ETX
ETSX
Height
Height
Diameter
Diameter
ES-ETX/ETSX 0836 © Watts, 2008
USA: 815 Chestnut St., No. Andover, MA 01845-6098; www.watts.com
Canada: 5435 North Service Rd., Burlington, ONT. L7L 5H7; www.wattscanada.ca
Water Safety & Flow Control Products