Dimensions/weights, Direct side tapping, Direct top tapping – Watts 100XL User Manual
Page 2: Alternate

MODEL
SIZE
DIMENSIONS
CSA
Ordering
(DN)
A
B
D
T
Weight
Temp. Steam
Code*
in.
mm
in.
mm
in.
mm
in.
mm
in.
mm
oz.
gm.
Rating BTU/hr.
1L2 M7
0002268
1
⁄
2
15
1
3
⁄
4
43
3
1
⁄
2
89
7
⁄
8
22
2
50
10
284
15,000
1XL-4 M7
0004494
1
⁄
2
15
1
3
⁄
4
43
3
1
⁄
2
89
7
⁄
8
22
4
100
12
340
15,000
1XL-8 M7
0004497
1
⁄
2
15
1
3
⁄
4
43
3
1
⁄
2
89
7
⁄
8
22
8
203
16
454
15,000
10L-2 M7
0064014
3
⁄
4
20
1
3
⁄
4
43
3
1
⁄
2
89
1
1
⁄
8
29
2
50
10
284
80,000
100XL-4 M7
0066100
3
⁄
4
20
1
3
⁄
4
43
3
1
⁄
2
89
1
1
⁄
8
29
4
100
12
340
105,000
100XL-8 M7
0066110
3
⁄
4
20
1
3
⁄
4
43
3
1
⁄
2
89
1
1
⁄
8
29
8
203
14
397
105,000
A = overall width of the valve. B = overall height of the valve, with lever closed, not including thermostat element length. D = length of shank , from shoulder
under outlet orifice overhang to inlet orifice edge.
T = length of thermostat element, measured from inlet orifice edge to end of thermostat.
* 150psi set pressure
Dimensions/Weights
Series 1L, 1XL, 10L and 100XL
Direct Side Tapping
For External Flue Heaters
Use extra length extension thermo-
stat to extend into water storage
tank.
For Internal Flue Heaters
Use short or standard length ther-
mostat. Vertical discharge line must
be installed with its direction down-
ward.
T
B
A
D
WARNING: REINSPECTION OF T&P RELIEF VALVE: Temperature and Pressure Relief Valves should be reinspected AT LEAST ONCE EVERY THREE
YEARS by a licensed plumbing contractor or authorized inspection agency, to insure that the product has not been affected by corrosive water conditions
and to insure that the valve and discharge line have not been altered or tampered with illegally. Certain naturally occurring conditions may corrode the
valve or its components over time, rendering the valve inoperative. Such conditions are not detectable unless the valve and its components are physically
removed and inspected. Do not attempt to conduct this inspection on your own. Contact your plumbing contractor for a reinspection to assure continuing
safety. FAILURE TO REINSPECT THIS VALVE AS DIRECTED COULD RESULT IN UNSAFE TEMPERATURE OR PRESSURE BUILD-UP WHICH CAN RESULT
IN SERIOUS INJURY OR DEATH AND/OR SEVERE PROPERTY DAMAGE.
IMPORTANT: A relief valve functions in an emergency by discharging water. Therefore, it is essential that a discharge line be piped from the valve in order
to carry the overflow to a safe place of disposal. The discharge line must be the same size as the valve outlet and must pitch downward from the valve and
terminate at least 6"(152mm) above the floor drain where any discharge will be clearly visible. For 100DT discharge line consult your Watts agent.
Direct Top Tapping
For Heaters
Use standard or extra length
extension thermostat.
Alternate
Only when the tappings are
not provided
Use standard or extra length
extension thermostat.
ES-10L/100XL 0828
© Watts, 2008
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