HTP EFT-110 Installation & Maintenance Manual Download

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LP-387 REV. 12.15.14

2. Freeze protection fluid must be replaced periodically due to degradation of inhibitors over time. Follow all fluid manufacturer
instructions.

NOTE: BOILER FAILURE DUE TO IMPROPER WATER CHEMISTRY IS NOT COVERED BY WARRANTY.

B. CHECK FOR GAS LEAKS

Before starting the boiler, and during initial operation, smell near the floor and around the boiler for gas odorant or any unusual odor.
Remove boiler front door and smell interior of boiler enclosure. Do not proceed with startup if there is any indication of a gas leak.
Repair any leaks at once.

PROPANE BOILERS ONLY

– Propane suppliers mix an odorant with the gas to make its presence detectable. In some instances, the

odorant can fade, and the gas may no longer have an odor. Before startup and periodically thereafter, have the propane supplier verify
the correct odorant level in the gas.

C. FREEZE PROTECTION (WHEN USED)

NEVER use automotive or standard glycol antifreeze. Do not use ethylene glycol made for hydronic systems. System water, including
additives, must be non-toxic, having a toxicity rating or Class of 1, as listed in Clinical Toxicology of Commercial Products. Use only
freeze-protection fluids certified by fluid manufacturer as suitable for use with stainless steel boilers, verified in the

fluid manufacturer’s

literature. Thoroughly clean and flush any system that has used glycol before installing the new boiler. Provide the boiler owner with a
material safety data sheet (MSDS) on the fluid used.

1. Determine the

freeze protection fluid quantity using total system water content following the fluid manufacturer’s instructions.

Remember to include expansion tank water content. DO NOT exceed a 50/50 ratio of antifreeze to water.

2.

NOTE:

Local codes may require back flow preventer or actual disconnect from city water supply.

3. When using freeze protection fluid with automatic fill, install a water meter to monitor water makeup. Freeze protection fluid may leak
before the water begins to leak, causing concentration to drop, reducing the freeze protection level.

D. FILL AND TEST WATER SYSTEM

Ensure the boiler is full of water before firing the burner. Failure to do so will damage the boiler. Such damage IS NOT covered by
warranty, and could result in property damage, severe personal injury, or death.

1. Fill the system only after ensuring water chemistry meets the requirements listed in this manual.

2. Close the manual and automatic air vents and boiler drain valve.

3. Fill to the correct system pressure. Correct pressure will vary with each application.

a. Typical cold water fill pressure for a residential system is 12 psi.
b. Pressure will rise when boiler is turned on and system water temperature increases. Operating pressure of the system
should never exceed 25 psi, and must never exceed the relief valve pressure setting.

4. At initial fill and during boiler startup and testing, check system thoroughly for leaks. Repair all leaks before proceeding further.

Eliminate all system leaks. Continual fresh make-up water will reduce boiler life. Minerals can build up in the heat exchanger, reducing
heat transfer, overheating the heat exchanger, causing heat exchanger failure and possibly resulting in property damage, severe
personal injury, or death.

5. The system may have residual substances that could affect water chemistry. After the system has been filled and leak tested, verify
that water pH and chlorine concentrations are acceptable by sample testing.

It is important to purge the system of air to avoid damage to the boiler.