Specifications
6
G. BOILER SUPPLY CONNECTIONS
q WARNING: Boiler temperature must be controlled by the boiler high limit not to exceed 200°.
Failure to do so will create a hazardous installation and void the applicable limited warranties.
q All water supply ttings on this heater are brass – do not over tighten or strip threads.
q It is recommended to use a union as per Figures 1 and 2.
NOTE: Be sure to connect Boiler Supply Line (from the boiler) to the “HX in” tting and Boiler
Return Line (to the boiler) to the “HX Out” tting.
H. FILLING THE HEATER
q Check that the temperature-and-pressure relief valve has been properly installed (mandatory
requirement).
q Completely close the drain valve.
q Open the highest hot water faucet to allow air to escape from piping.
q Open the valve to the cold-water inlet and allow the heater and piping system to completely ll, as
indicated by a steady ow of water from the open faucet.
I. FLUSHING THE HEATER
q Upon installation, there is a possibility that the user may experience a ‘silky’ feel to the hot water.
This ‘silky’ water may be accompanied by a slight odor. This sensation is due to the cement lining
going through its normal wet curing process.
During the wet curing process, the pH level of the hot water may increase slightly. This temporary
increase in pH is not harmful to humans or domestic animals and typically lasts a few days, but could
last slightly longer in applications with low hot water usage. To reduce the likelihood that the user will
encounter these sensations, it is recommended that the water heater is properly ushed.
q Flush the water heater by opening the hot water faucet(s) and allow the water to run until it goes
cold (Note: It may take a minute or two for the hot water to reach the faucet). Repeat the process
until the ‘silky’ sensation and/or odor is no longer detected.
J. TPI THERMOSTAT INSTALLATION
q Attaching TPI Thermostat to tank:
Place hole in back of TPI thermostat over immersion well. TPI thermostat should t ush against the
tank without immersion well protruding beyond cover of TPI case. Use self-tapping screw provided
(Screw A) to attach TPI directly to the Alliance SL tank. (See TPI Diagram 2)
q Inserting the Temperature Sensor:
Slide temperature sensor all the way into the immersion well – until it contacts the end.
(See TPI Diagram 2)
q The sensor will measure temperature adequately by resting against the bottom of the immersion
well.
(Note: Sensor does NOT need to make intimate contact with entire well surface to work properly)
q CAUTION: Sensor is soldered directly to TPI. DO NOT BEND SHARPLY OR OVERWORK.
K. TPI WIRING CONTROLS
NOTE: THCONTROL ELECTRONICS MUST BE POWERED WITH 24VAC.
q Incoming 24VAC power must be connected to 24VAC connectors on the bottom right corner of TPI
Thermostat. (See TPI Diagram 3)
q The TPI 24VAC only requires 20mA, or about 0.5 Watts.
q Connect control wiring to PUMP/TT normally open relay connections (rated for both 24V and 110V
wiring) on the bottom left corner of TPI control. (See TPI Diagram 3)
q TPI Wiring will vary depending on the type of boiler and valve controls in the system. Consult
attached Wiring Diagrams for appropriate wiring conguration for your system.