INSTALLATION, OPERATING AND SERVICE INSTRUCTIONS FOR Alliance SL™ Indirect - Fired Water Heater Including Warranty Information For service or repairs to the water heater, call your heating contractor. When seeking information on the water heater, provide Model Number and Serial Number as shown on Rating Label. Model Number AL SL Heating Contractor Serial Number Installation Date Phone Number Address 104362-01 - 8/12 Price - $5.
GENERAL INFORMATION PLEASE READ INSTRUCTIONS CAREFULLY BEFORE INSTALLING WATER HEATER U.S Boiler Company, Inc. – (herein called the Company) intends that this Alliance SL™ Indirect-Fired Water Heater be used as a separate zone to a heating system boiler. This appliance is designed to heat water by circulating water from the boiler through the internal coil in the tank. We specifically do not warrant this tank for high temperature applications such as wood stoves or steam producing systems.
INDEX General Information ...................................................................................................................... 2 Specifications & Ratings ............................................................................................................... 2 Installation Guidelines .................................................................................................................. 4 Installation Checklist ..............................................................
INSTALLATION GUIDELINES A. INSPECTING AND PREPARING THE WATER HEATER q AL27SL thru AL70SL - Remove the cardboard box, which comes packaged with the heater. It should contain the following: TPI thermostat, T&P valve and a “Tee”, foamed lid and screws. q AL119SL - Remove the cardboard boxes, which come packaged with the heater. One box should contain the following: TPI thermostat, T&P valve and a “Tee”, foamed lid and screws. The other box should contain the heat exchanger. B.
working pressure of the water heater (150psi). Install the valve into the opening provided and marked for this purpose in the water heater, and orient it or provide the tubing so that any discharge from the valve will exit only within 6 inches above, or at any distance below the structural floor and cannot contact any live electrical parts. The discharge opening must not be blocked or reduced in size under any circumstances.
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 fittings 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.
q The Alliance SL water heater may operate as a separate heating zone using either the heating system circulator and an appropriate zone valve, or a separate circulator dedicated for water heating. (See Figure 1 & 2). q In both systems, the Alliance SL is controlled through the TPI thermostat on the heater. (See Figures 1 & 2).
F. WATER SUPPLY CONNECTIONS (See Figure 1 & 2). q Do not over tighten brass threads. q Mark the water shutoff for future reference. q Do not apply heat to cold inlet. q If there is a check valve (sometimes in water meter), backflow preventer or pressure-reducing valve, install an adequate size expansion tank. G. FILLING THE HEATER q Completely fill heater. q Water connections completed and free of leaks. q Check for proper installation of relief valve. q Close drain valve.
WATER TEMPERATURE CONTROLS A periodic inspection of the operating controls, heat exchanger and wiring should be made by qualified service personnel. Temperature of the water should be tested periodically at the faucet to be sure thermostat is working properly. TEMPERATURE ADJUSTMENT The TPI comes with a factory set temperature setting of 120°F and differential setting of 10°F. Any temperature adjustment of the thermostat must be made by qualified service personnel, as shown below.
TPI CONTROL - DIAGRAM 1 Indicating Light Temperature Adjust Differential Adjust TPI CONTROL - DIAGRAM 2 Screw A 10
TPI CONTROL - DIAGRAM 3 Outgoing 24V wires to relay or zone valve Incoming 24V power connection Outgoing 110V wires to circulator Incoming 24V power connections Chase Nipple Conduit NOTE: Use proper conduit and chase nipple 11
FIGURE 1 - Installation Using Zone Valves Installation Diagram Using Zone Valves FIGURE 2 - Installation Using Circulator Installation Diagram Using Separate Circulator 12
FIGURE 3 - Coil Detail & Tightening Sequence Bolt Small outside O-ring Large inside O-ring Steel Washer Coil Plate Plastic O-Ring Housing Tank Flange ‘L’ Nut Proper Tightening Sequence for Top Mount Coil 7 2 4 3 2 5 6 1 3 1 Incorrect 8 Correct Note: Same as car tire lugs CAUTION: Does not require excessive force to seal properly.
Circulator & Burner Control Wiring Diagrams Standard Wiring for Circulator with Boiler Maintaining a Temperature of 180° Wiring for Burner Control L8148E 14
Zone Valve Wiring Diagrams Wiring for 3 Wire Zone Valve Wiring for 4 Zone Valve 15
Switching relay Wiring Diagrams Switching Relay R8845U or SR 501 Switching Relay SR-502 or SR-503 16
Switching relay Wiring Diagrams (con’t) Switching Relay SR-504 with Priority Option 17
REPAIR PARTS Description Replacement Coil with O-Rings, Nuts, Washers & Bolts TPI Control Hardware Package Includes Nuts, Washers & Bolts O-Ring Kit T&P Relief Valve 18 AL27SL Part Number AL35SL AL50SL AL70SL 101484-01 AL119SL 101484-02 101484-03 101379-01 101538-01 101539-01 101540-01 101540-02
HOW TO OBTAIN SERVICE ASSISTANCE U.S. Boiler Company, Inc. does not have a service department or personnel to service your heater in the field. A qualified installer or service technician must do all service work. Therefore, if you have any questions about your new water heater concerning service adjustment, repair, routine maintenance, or replacement - first contact your installer, plumbing contractor or service agency.
10 – 2 – 1 Limited Warranty U.S. Boiler Company, Inc. (hereinafter called the “Company”) offers the following Limited Tank Replacement Warranty, Limited Tank Replacement Labor Allowance, and Limited Parts Warranty to the original purchaser/owner of this stone-lined Alliance SL™ indirect-fired water heater. These warranties are not transferable beyond the original purchaser/owner, and are not valid if the tank is removed from initial installation site.
