ELU and EFTU
High Eciency Condensing
Wall-Hung Gas Boilers
Cascade System
Installation Instructions
The manufacturer reserves the right to make product changes or updates without notice and will not be held liable for typographical errors
in literature.
NOTE TO CONSUMER: PLEASE KEEP ALL INSTRUCTIONS FOR FUTURE REFERENCE.
272 Duchaine Blvd. New Bedford, MA 02745 www.htproducts.com
LP-743 Rev. 000 Rel. 000 Date 8.25.20
Improper installation, adjustment, alteration, service, or maintenance could void product warranty and cause property damage, severe
personal injury, or death.
California Proposition 65 Warning: This product contains chemicals known to the State of California to cause cancer, birth defects, or other
reproductive harm.
The surfaces of these products contacted by potable (consumable) water contain less than 0.25% lead by weight as required by the Safe
Drinking Water Act, Section 1417.
Heat Exchanger Bears the ASME “H” Stamp
This document is provided in addition to other documentation and DOES NOT REPLACE the installation manual. This document must only be used
by a qualied installer / service technician. Read all instructions in the installation manual before installing. Then, if installing a Cascade System, read
these instructions. Only then proceed with installation. Perform steps in the given order. Failure to do so could result in substantial property damage,
severe personal injury, or death.
Included with Kit - Part #9800P-002:
Item # Description Quantity
1 BUS Connectors (p/n 8200300015201) 8
2 SYS Connector (p/n 820300014600) 1
3 System Sensor (p/n 7250-324) 1
4 Instructions (p/n LP-743) 1
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