Manual
ES-210-5 0531 © Watts Regulator Company, 2005
USA: 815 Chestnut St., No. Andover, MA 01845-6098; www.wattsreg.com
Canada: 5435 North Service Rd., Burlington, ONT. L7L 5H7; www.wattscanada.ca
A
D
B
C
Dimensions — Weights
“Alternate” Only When The Tappings Are Not Provided
“Alternate” Only When The Tappings Are Not Provided
Fig. 2
Fig. 3
Typical Installations
Installation: The gas shutoff valve must be installed so that the ther-
mostat is immersed in the water within the upper 6" of the tank DO
NOT INSTALL IN COLD WATER LINE.
Note: The installation of a separate pressure relief valve is necessary for
installations using gas shutoffs.
Pressure Relief
Valve Alternate
Installation
Gas From
Supply
Cold
Drain Tube
Hot
Drain Tube
Series
210-5
Gas To
Burner
Pressure Relief
Valve Alternate
Installation
Gas From
Supply
Cold
Drain Tube
Pressure Relief Valve
Hot
Drain Tube
Series
210-5
Gas To Burner
To Bottom Supply
Pressure Relief Valve
Pressure Relief Valve
Pressure Relief Valve
Alternate Installation
Direct side Tapping
Fig. 1
Gas From
Supply
Cold
Drain Tube
Hot
Drain Tube
Series 210-5
Gas To Burner
MODEL DIMENSIONS WEIGHT
AB C D
in. mm in. mm in. mm in mm lbs kgs.
210-5 M2 2
1
⁄2 64 1
1
⁄8 29 8 203
7
/8 22 1.0 0.45
L210-5 M2 2
1
⁄2 64 1
1
⁄8 29 7
13
/16 198 1
7
/8 48 1.0 0.45
LL210-5 M2 2
1
⁄2 64 1
1
⁄8 29 8
5
/16 211 2
3
/8 60 1.0 0.45
LLL210-5 M2 2
1
⁄2 64 1
1
⁄8 29 8
13
/16 224 2
7
/8 73 1.0 0.45
Models BTU/HR Ratings
Connections Natural L.P. M.F.G. and L.P.
Tank Gas Gas Gas Gas Air Mixtures Mixed Gases
210-5 M2, L210-5 M2, LL210-5 M2, LLL210-5 M2
3
⁄4" male
1
⁄2" female 150,000 243,000 77,400 125,750
Gas Capacity
C.S.A. listed ratings of this valve are:
For use with natural gas 150,000 BTU/hr.
For use with liquified petroleum gas 243,000 BTU/hr.
NOTE: See C.S.A. directory for adjustment factors when used
with manufactured, mixed and L.P. gas-air mixtures.