GSW FlowThru I Introduction, Description, II SAFETY Relief Valve Requirements, Iii Installation

I) INTRODUCTION

Thank you for purchasing this FlowThru® storage tank. Properly installed and maintained, it will provide years of trouble free service.

The warranty on this storage tank is in effect only when the tank is installed and operated in accordance with these instructions. The manufacturer of this tank will not be liable for any injury or property damage resulting from failure to comply with these instructions.

IMPORTANT: Read and understand these instructions before installing and operating your storage tank.

Description

The FlowThru® series of storage tanks have been designed to supply hot water for domestic use when combined with a tankless coil boiler or instantaneous water heater (IWH). Each tank is equipped with an adjustable thermostat, pre- wired and ready for connection to a circulator pump (not supplied). These tanks are not constructed to ASME requirements and should not be used for such applications. The FlowThru® series of storage tanks has been optimized to maximize hot water flow rate capabilities of an instanta- neous water heater or tankless coil boiler. They provide a faster recovery than regular electric or gas-fired tank type water heaters of the same storage capacity. Always use a mixing valve on the hot water outlet (not provided).

II) SAFETY

Relief Valve Requirements

For protection against excessive temperatures and pres- sure, install temperature and pressure protective equipment required by local codes, but no less than a combination Temperature and Pressure (T&P) Relief Valve certified as meeting the requirements for “Standard For Relief Valves For Hot Water Supply Systems, ANSI Z21.22/CSA 4.4”. The valve shall be marked with a maximum set pressure not to exceed the maximum working pressure of the storage tank. The T&P valve shall be rated for the BTU INPUT of the entire system. This T&P valve may be in addition to any T&P valve that is required on the boiler or instantaneous water heater system. Install the valve into the opening pro- vided on the storage tank, or other approved system loca- tion. Provide tubing so that any discharge from the valve will exit within 152mm (6 in.) above, or any distance below the structural floor and cannot contact any live electrical part. The end of the relief pipe opening should terminate near the floor drain or other suitable location. Do not place a valve(s) or any other blockage or restrictions between the tank and the T&P valve.

III) INSTALLATION

WARNING

Excessive Weight Hazard

Use two or more people to move and install storage tank. Failure to do so can result in back or other injury.

Local Codes

The installation of this storage tank must be In accordance with these Instructions and all applicable local codes.

Location

Locate the storage tank in a clean dry area close to the water-heating source and preferably central to the piping system. Adequate clearance for accessibility to permit main- tenance and service must be provided. Water lines and the storage tank should be protected from freezing tempera- tures. Do not install the storage tank in outdoor unprotected areas. It is necessary to have a floor drain nearby to permit easy draining (see Figure 1).

IMPORTANT

This storage tank must be installed strictly in accordance with the instructions enclosed, and local electrical, fuel and building codes. It is possible that connections to the tank, or the tank itself, may develop leaks. IT IS THERE- FORE IMPERATIVE that the storage tank be installed so that any leakage of the tank or related water piping is directed to an adequate drain in such a manner that it can- not damage the building, furniture, floor covering, adja- cent areas, lower floors of the structure or other property subject to water damage. This is particularly important if the tank is installed in a multi-story building, on finished flooring or carpeted surfaces. GSW WILL NOT ASSUME ANY LIABILITY for damage caused by water leaking from the storage tank, pressure relief valve, or related fittings. Select a location as centralized within the piping system as possible. In any location selected, it is recommended that a suitable drain pan be installed under the storage tank. This pan must limit the water level to a MAXIMUM depth of 45mm (1 3/4 in.) and have a diameter that is a minimum of 50mm (2 in.) greater than the diameter of the storage tank. Suitable piping shall connect the drain pan to a properly operating floor drain.

Circulator Pump

A circulator pump is not supplied. Use only a bronze body model rated for 110/120 volts, 60Hz. Install in accordance with the pump manufacturer’s instructions using standard plumbing practices. Size the circulator pump taking into account the pressure loss through the tankless coil boiler or instantaneous water heater as well as pressure losses through the connecting pipes that are part of the circulating loop.

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