1
CONTENTS
For Your Safety …………. 4
Operation …………. 5
• General …………. 5
• Temperature …………. 5
• Freeze Prevent Device …………. 6
• Winterizing …………. 6
Installation …………. 7
• General …………. 7
• Accessories …………. 8
• Optional Items …………. 8
• Outdoor Installation .………… 8
• Indoor Installation …………. 9
• Combustion Air Supply …………..9
• Venting Instructions …………..10
• Gas Supply …………. 12
• Water Connection …………. 13
• Pressure Relief Valve …………. 14
• Electrical Connection …………. 14
Starting Operation …………. 15
Operating Instruction …………..15
Wiring Diagram …………..17
For your Safety …………..18
Application …………..20
• Space Heating …………..20
• Dual-purpose heating …………..21
• Storage Tank …………..22
• Re-Circulation …………..22
Temperature Setting …………..23
Manifold Multi System …………..23
Maintenance and Service …………. 27
Error codes ……...28, 32
Trouble Shooting …………. 29
Component Diagram …………..33
Part List …………. 37
Output temperature Chart …………..39
SPECIFICATIONS
Natural Gas Input Min. 25,000 Btu
Max. 235,000 Btu
LPG Input Min. 25,000 Btu
Max. 225,000 Btu
Gas Connection ¾” NPT
Water Connection ¾” NPT
Water Pressure Min. 15 psi
Max. 150 psi
Natural Gas Pressure Inlet Min. 5” WC
Max. 10.5” WC
LP Gas Pressure Inlet Min. 11” WC
Max. 14” WC
Manifold Pressure Natural 2.2” WC
Propane 2.7” WC
Weight 70 lbs.
Dimensions 24.5”x16.5”x8.3”
Ignition Electronic Ignition
Electrical Supply AC 120 V
***
• Inlet gas pressure must not exceed the
above maximum values.
• For gas pressures lower than 5” WC for
natural gas and 11”WC for propane, call
the manufacturer.
• Before installing in areas over 4,500 feet
above sea level, contact the manufacturer
for high altitude adjustment instructions.
• Check the rating plate to insure this product
matches your specifications.
• Takagi - USA is constantly improving our
products; therefore specifications are
subject to change without prior notice.
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