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SPECIFICATIONS
UNIT RATED CAPACITY
Model
Natural Gas
Propane Gas
TR250
250,000 Btu/hr
250,000 Btu/hr
TR400
399,000 Btu/hr
399,000 Btu/hr
GAS PRESSURE
Fuel
Natural Gas
Propane Gas
Manifold
1.8” - 2.0” w.c.
6.8” - 7.0” w.c.
Inlet, Minimum
4.5” w.c.
9.0” w.c.
Inlet Maximum
10.5” w.c.
13.0” w.c.
ORIFICE SIZES
Models
Natural Gas
Propane Gas
TR250
#25
#43
TR400
#25
#43
WATER FLOW REQUIREMENTS
Model
Minimum
Maximum
TR250
25
125
TR400
30
125
© 2015 Hayward Industries, Inc. Printed in U.S.A.