LP-293 Rev. 9.24.15
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B. Check for Gas Leaks
Before starting the boiler, and during initial operation, smell
near the oor 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 – The propane supplier mixes an
odorant with the propane 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.
maintenance procedure to clean the heat exchanger in the
Maintenance Section of this manual.
Test/replacefreezeprotectionuid
1. For systems using freeze protection uids, follow uid
manufacturer’s instructions to verify inhibitor level and that
other uid characteristics are satisfactory.
2. Freeze protection uid must be replaced periodically
due to degradation of inhibitors over time. Follow all uid
manufacturer instructions.
NOTE: Boiler failure due to improper water chemistry is not
covered by warranty.
C. Freeze Protection (When Used)
1. Determine the freeze protection uid quantity using total
system water content following the uid manufacturer’s
instructions. Remember to include expansion tank water
content.
2. Local codes may require back ow preventer or actual
disconnect from city water supply.
3. When using freeze protection uid with automatic ll, install
a water meter to monitor water makeup. Freeze protection
uid may leak before the water begins to leak, causing
concentration to drop, reducing the freeze protection level.
NEVER use automotive or standard glycol antifreeze. Do
not use ethylene glycol made for hydronic systems. Use only
freeze-protection uids certied by uid manufacturer as
suitable for use with stainless steel boilers, veried in the uid
manufacturer’s literature. Thoroughly clean and ush any
system that has used glycol before installing the new boiler.
Provide the boiler owner with a material safety data sheet
(MSDS) on the uid used.
D. Fill and Test Water System
Ensure the boiler is full of water before ring 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 ll pressure for a residential system is 12
psi.
b. Pressure will rise when boiler is turned on and system water
temperature increases. Operating pressure must never exceed
the relief valve pressure setting.
4. At initial ll 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 and
causing heat exchanger failure.
5. The system may have residual substances that could aect
water chemistry. After the system has been lled 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.
E. Purge Air from Water System
Purge air from the system:
a. Connect a hose to the purge valve and route hose to an area
where water can drain and be seen.
b. Close the boiler or system isolation valve between the purge
valve and ll connection to the system.
c. Close zone isolation valves.
d. Open quick-ll valve on cold water make-up line.
e. Open purge valve.
f. Open the isolation valves one zone at a time. Allow water to
run through the zone, pushing out the air. Run water until no
noticeable air ow is present. Close the zone isolation valves
and proceed with the next zone. Follow this procedure until all
zones are purged.
g. Close the quick-ll water valve and purge valve and remove
the hose. Open all isolation valves. Watch the system pressure
rise to correct cold-ll pressure. It is recommended that you
put the pumps into manual operation to assist in purging the
circuits.
h. Disconnect the wires that are connected to the THERMOSTAT
terminals of the customer connection board. Apply power to
the boiler. The display will show the temperature of the water
in the boiler. Press the v and ENTER keys simultaneously and
hold for 1 second. The display will read:
The central heating pump will come on. If you then press the
^ key, the central heating pump will shut o. The display will
read:
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