Install Instructions

DWG# 3576-1
LTA-2 Features:
Item Description
Status LED Bi-color LED status indicator. See "LED States"
table for details.
Service LED Amber LED indicator that service is needed on
LTA-2 or system.
Test Button Push button switch for testing safety shutdown
of boiler controls.
Status LED Service LED Contacts Meaning
Green Off Closed Normal
Green Amber Closed Safe water level, weak probe signal - Service soon.
Red Off Open Low water condition, (LW)
Red Amber Open Probe signal too weak, LW condition - Service now.
Blinking Red Open Control failure. Lockout in LW condition.
Off Off Open No power to LWCO.
LED States:
Installation:
1. Install the probe above the minimum safe water level, as determined from the boiler manufacturer's literature. (See Fig. 1)
NOTE: This may be in a tapping on the boiler or in the boiler supply or return piping.
2. Install the probe to extend into the boiler cavity or piping to make contact with the water.
3. Install the probe so that the exposed portion of the stainless steel is a minimum of 1/4" from any grounding surface inside the
boiler (to prevent the probe from shorting). (See Fig. 2)
4. Tighten probe securely with a wrench, using bushing ats provided. Use pipe thread sealant to seal the probe threads.
Status LED
Service LED
Test
Button
• Do not tighten by grasping the device enclosure. Use
wrenching ats on the probe bushing only. Failure to install
properly could damage the device and cause improper
operation resulting in damage to equipment and property.
• Do not use manual reset low water cutoffs with automatic
water feeders. Flooding, equipment damage, and
property damage can result. Only use automatic water
feeders with automatic reset low water cutoffs.
• Do not mount device with probe angled upward or
deposits can accumulate on the probe.
• Mount only with probe facing horizontally or vertically
downward and maintain 1/4" minimum clearance from
electrode and pipe wall.
• Failure to install probe as directed can cause improper
operation and damage to equipment and property.
PROBE SPACING REQUIREMENTS
FIG. 2
MINIMUM SAFE WATER LEVEL
FIG. 1