00307474_2000559957_Rev B Glass Lined Indirect Water Heater Installation & Operation Manual Models: GIT040 - GIT119 CAUTION: The heat transfer medium must be water or other nontoxic fluid having a toxicity rating or class of 1, as listed in Clinical Toxicology of Commercial Products, 5th edition. The pressure of the heat transfer medium must be limited to a maximum of 30 PSIG by an approved safety or relief valve.
Contents HAZARD DEFINITIONS .................................................... 2 PLEASE READ BEFORE PROCEEDING ........................ 3 1. GENERAL INFORMATION Operating Restrictions ........................................................ 4 Single-Wall Heat Exchanger .............................................. 4 2. PRE-INSTALLATION Locating the Tank............................................................... 5 Recommended Clearances ................................................ 5 3.
Glass Lined Indirect Water Heater Installation & Operation Manual Please read before proceeding WARNING Installer – Read all instructions before installing. Perform steps in the order given. Have this indirect water heater serviced/ inspected by a qualified service technician, at least annually. NOTICE Failure to comply with the above could result in severe personal injury, death or substantial property damage.
Glass Lined Indirect Water Heater Installation & Operation Manual 1 General information The Lochinvar series indirect water heater (FIG. 1-1) is designed to generate domestic hot water in conjunction with a hot water boiler using forced boiler water circulation. This indirect water heater consists of a tank in which a smooth coil is located (Table 1A). Boiler water is pumped through the coil and heats the water in the tank.
Glass Lined Indirect Water Heater Installation & Operation Manual 2 1. Pre-installation The installation must conform to the instructions in this manual and all applicable local, state, provincial, and national codes, laws, regulations, and ordinances. Installations in Canada must conform to B149.2 Installation Code. 2. Locating the tank 1. Choose a location for your water heater centralized to the piping system.
Glass Lined Indirect Water Heater Installation & Operation Manual 3 Boiler side piping Figures 3-1 thru 3-4 show typical boiler side piping for several common situations. Regardless of which system is used it is imperative that the flow rates called for in Table 3A are developed through the coil. This requires properly sized piping and a properly sized pump.
Glass Lined Indirect Water Heater Installation & Operation Manual 3 Boiler side piping (continued) Figure 3-1 Piping Diagram Zoned with Circulators ZONE #1 PRESSURE REDUCING VALVE PRESSURE GAUGE ZONE #2 ZONE #3 ZONE #4 BACKFLOW PREVENTER ZONE CIRCULATORS (TYPICAL) MAKE UP WATER SYSTEM SUPPLY SENSOR (WHEN USED) AIR SEPARATOR EXPANSION TANK HOT WATER OUT NOT TO EXCEED 4 PIPE DIA.
Glass Lined Indirect Water Heater Installation & Operation Manual 3 Boiler side piping Figure 3-2 Piping Diagram Zoned with Valves ZONE #1 PRESSURE REDUCING VALVE PRESSURE GAUGE ZONE #2 ZONE #3 ZONE #4 BACKFLOW PREVENTER ZONE VALVES (TYPICAL) SYSTEM SUPPLY SENSOR (WHEN USED) MAKE UP WATER AIR SEPARATOR DIFFERENTIAL PRESSURE BYPASS VALVE (IF USED) SYSTEM CIRCULATOR EXPANSION TANK NOT TO EXCEED 4 PIPE DIA.
Glass Lined Indirect Water Heater Installation & Operation Manual 3 Boiler side piping (continued) Figure 3-3 Knight Boiler Primary / Secondary Piping PRESSURE REDUCING VALVE BACKFLOW PREVENTER PRESSURE GAUGE MAKE UP WATER AIR SEPARATOR SYSTEM SUPPLY SENSOR TO SYSTEM BALL VALVE (TYPICAL) FROM SYSTEM SYSTEM CIRCULATOR Y-STRAINER (RECOMMENDED) EXPANSION TANK BOILER CIRCULATOR DOMESTIC HOT WATER CIRCULATOR DRAIN POINT (TYPICAL) ANTI-SCALD MIXING VALVE HOT WATER OUT COLD WATER IN TANK SENSOR/ A
Glass Lined Indirect Water Heater Installation & Operation Manual 3 Boiler side piping Figure 3-4 Multiple Tank Connections PRESSURE REDUCING VALVE BACKFLOW PREVENTER PRESSURE GAUGE MAKEUP WATER AIR SEPARATOR SYSTEM SUPPLY SENSOR TO SYSTEM NOT TO EXCEED 4 PIPE DIA.
Glass Lined Indirect Water Heater Installation & Operation Manual 4 Domestic side (tank) piping Basic domestic piping Domestic water piping for distant fixtures Figure 4-2 on page 14 shows typical domestic water piping for a tank. The function of the components shown are as follows: a. Shut-off valves (recommended) - Used to isolate the tank for servicing. In some cases the furthest fixture may be quite distant from the tank.
Glass Lined Indirect Water Heater Installation & Operation Manual 4 Domestic side (tank) piping Anti-scald valves (mixing valves) Anti-scald valves used with water heaters are also called tempering valves or mixing valves. An anti-scald valve mixes cold water in with the outgoing hot water to assure that hot water reaching a building fixture is at a temperature low enough to be safe. ASSE1017 and ASSE1070 certified valves are recommended.
Glass Lined Indirect Water Heater Installation & Operation Manual 4 Domestic side (tank) piping Table 4A Minimum Relief Valve (CSA Rating) Model Btu/hr GIT040 105,000 GIT050 105,000 GIT080 205,000 GIT119 205,000 (continued) T&P relief valve discharge piping MUST NOT be: - excessively long. Using more than two (2) elbows or 15 feet of piping can reduce discharge capacity. - directly connected to a drain. Refer to local codes. - subject to freezing.
Glass Lined Indirect Water Heater Installation & Operation Manual 5 Wiring Indirect water heater sensor setup (Knight boiler) CAUTION NOTICE Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. The sensor supplied contains an Auto Reset High Limit (194°F). Install tank sensor Connect tank sensor The tank sensor is a dual sensor which controls the temperature of the tank from the boiler(see FIG. 4-1).
Glass Lined Indirect Water Heater Installation & Operation Manual 5 Wiring (continued) Indirect water heater controlled using Aquastat and zone circulator / valve 1. Install Aquastat to tank. Aquastat control (100208546) can be ordered from your local Lochinvar distributor. 2. Connect Aquastat to the zone controller for the Indirect Water Heater Zone. 3. Adjust Aquastat to the desired temperature.
Glass Lined Indirect Water Heater Installation & Operation Manual 6 Start-up and check-out 1. Make sure the system is free of leaks and that air is purged from the system. CAUTION Fix any leaks found before proceeding further. Leakage from the boiler piping can result in severe damage to the boiler. 2. After completing all domestic water connections, flush the indirect water heater thoroughly before leaving the installation.
Glass Lined Indirect Water Heater Installation & Operation Manual 7 Maintenance The Lochinvar GIT series indirect water heater is an extremely simple device and as such requires very little maintenance. There are, however, several items which should be checked out on an annual or as needed basis to ensure a reliable supply of hot water: * Make sure that the rest of the boiler and domestic water piping is free of leaks. Homeowner monthly maintenance to include: 1.
Glass Lined Indirect Water Heater Installation & Operation Manual 8 Performance data Table 8A AHRI Chart Indirect Water Heater Indirect Water Heater Model Number Potable Water Volume Gal. GIT040 40 1.6 1 137 167 96,000 14 5.7 GIT050 50 1.9 1.3 182 227 132,000 14 5.8 GIT080 70 2.4 1.2 262 319 175,000 14 8.9 GIT119 115 2.8 0.5 294 389 197,000 14 11 Heat Source Standby Continuous Water Heat Loss Draw Rating Volume F/hr Gal/hr Gal.
Glass Lined Indirect Water Heater Installation & Operation Manual 8 Performance data (continued) How to properly Size Your Indirect Water Heater Use the First Hour Rating (FHR) to properly size your Indirect Water Heater. The First Hour Rating is the amount of hot water in gallons the heater can supply per hour (starting with a tank full of hot water), depending on tank capacity, source of heat, and the size of the burner.
Glass Lined Indirect Water Heater Installation & Operation Manual 8 Performance data (continued) Table 8B First Hour Rating - 180°F Boiler Loop Water (Universal Sizing) First Hour Rating - 180°F Boiler Loop Water (Universal Sizing - 45,000 - 260,000 Btu/hr) Model GIT040 Circulator Flow GPM Boiler Heating Capacity Domestic Outlet 5 GIT050 8 12 115 140 140 115 140 98 76 126 103 60,000 136 103 165 131 70,000 155 117 185 145 100,000 168 126 140 233 179 142 120,000 140,000
Glass Lined Indirect Water Heater Installation & Operation Manual 9 Replacement parts REPLACEMENT PARTS LIST PART NUMBER DESCRIPTION 100208545 Thermostat, Sensor, -20+105C 100208546 Aquastat, 40-180° 100306392 Anode 11.81 (GIT040, GIT050) 100306396 Anode 17.
Glass Lined Indirect Water Heater Installation & Operation Manual Notes 22
Glass Lined Indirect Water Heater Installation & Operation Manual Notes 23
Revision Notes: Revision A (PCP# 3000024508 / CN# 500015339) initial release. Revision B (PCP #3000026014 / CN #500015684) reflects an update to Table 3A on page 6, Table 8A on page 18, and Table 8B on page 20. MM #100307474_DIR #2000559957 Rev B 06/18 - Printed in U.S.A.
