Lochinvar 000 - 500 User Manual

11.  If ignition system fails to operate properly, re pair

work must be performed by a qualified
serviceman or installer.

The ignition module is not repairable.  Any mod i fi ca tion
or repairs will invalidate the warranty and may create
hazardous conditions that result in prop 

er 

ty damage,

personal injury, fire, explosion and/or toxic gases.  A
faulty ignition module must be re 

placed with a new

module.

F1 Standing Pilot Models (thermocouple supervised)
Pilot Flame Failure Response Time - 180 Seconds
Maximum 

F9/M9 Intermittent Spark Ignition Pilot Mod els
Pilot Trial for Ignition Period - 90 Seconds
(45,000 thru 399,999 Btu/hr models)

Pilot Trial for Ignition Period - 15 Seconds
(500,000 Btu/hr model)

Pilot Failure Response Time - 0.8 Seconds at less than
1.0 µA flame current

Pump Delay Timing (Standard on Water Heaters and
Optional on Boilers) - 30 Seconds after burner shut -
down 

1. 

For water heaters, and boilers with the pump delay
option, if either the inlet sensor or the optional
multi-purpose temperature sensor reads below
40°F, the pump relay will turn ON.  When the
temperature rises above 50°F the pump relay will
turn OFF.

2.

Location - Heating boilers and water heaters must
be located in a room having a temperature safely
above freezing [32°F(0°C)].

3.

Caution - A room where the appliance is installed
and operating under a negative pressure may
experience a downdraft in the flue of an appliance
which is not firing.  The cold outside air pulled
down the flue may freeze a heat exchanger.  This
condition must be cor rect ed to provide adequate
freeze protection.

4. 

Freeze protection for a heating boiler or hot water
supply boiler using an indirect coil can be provided
by using hydronic system antifreeze.  Follow the
manufacturers instructions.  DO NOT use
un di lut ed or automotive type antifreeze.

5. 

A snow screen should be installed to pre vent snow
and ice accumulation around the appliance vent ing
system in cold climates.

6.  Shut-down and Draining - If for any rea son, the

appliance is to be shut off, the following
precautionary measures must be taken:

(a)   Shut off gas supply.

(b)   Shut off water supply.

(c)   Shut off electrical supply.

(d)

Drain the unit completely.  Remove one
threaded plug or bulb well from the inlet
side of the front header and one from the
outlet side of the front header on the heat
exchanger.   Blow all wa ter out of the heat
exchanger.

(e)   Drain pump and piping.

1.

Use only properly diluted inhibited glycol an 

ti 

-

freeze designed for hydronic systems.  Inhibited
propylene glycol is recommended for systems
where incidental contact with drinking water is
possible.

2.

A solution of 50% propylene glycol will pro vide
maximum protection of approximately -30°F.

3. 

Follow the instructions from the glycol an ti freeze
manufacturer.  The quantity of glycol an ti freeze
required is based on total system volume including
ex pan sion  tank  volume.

4.

Glycol is more dense than water and chang es the
viscosity of the system.  The addition of glycol
will decrease heat transfer and in crease frictional
loss in the heating boiler and re lat ed piping.  A
larg er pump with more capacity may be required to
maintain desired flow rates in a glycol system.

 CAUTION