HTP SuperStor Ultra Indirect Fired Water Heaters - Manual (Page 11)

11
LP-83 Rev. 3.24.14
dissolved solids in excess of 2,000 ppm is a non-warrantable condition. Failure of a water heater due to lime scale build up IS NOT
covered by the warranty.
Hardness: 7 grains
Chloride levels: 100 ppm
pH levels: 6-8
TDS: 2000 ppm
Sodium: 20 mGL
PART 3 – HEATER PIPING
A. PLUMBING
It is mandatory that all plumbing be done in accordance with federal, local, and state plumbing codes and practices. Failure to properly
install the water heater WILL VOID the warranty. It is also necessary to use both thread tape and pipe dope on all mechanical plumbing
connections.
When filling the water heater, open a hot water tap to release air in the tank and piping. Failure to do so could lead to improper water
heater operation.
DO NOT pipe this water heater with black iron, galvanized steel, steel, or lead pipe. Doing so will result in premature product failure and
property damage, and WILL VOID the product warranty.
B. BOILER CONNECTIONS
Use two wrenches when tightening water piping at heater. Use one wrench to prevent the heater return or supply line from turning.
Failure to prevent piping connections from turning could cause damage to heater components.
Use a 1” nominal minimum pipe size when piping with zone valves or circulators.
On the water heater, the boiler supply connects to the outlet of the circulator. The circulator inlet is to be connected to the hot outlet side
of the boiler. Be sure that the arrow on the circulator is facing the correct flow direction. (See pressure drop sizing for circulator, this
manual.) On the tank, the boiler return is to be connected to the return side of the boiler. The return(s) from heating loop(s) should have
a flow check or swing check valve installed before the return pipe from the tank.
In a steam boiler, the tank supply must be connected to the boiler well below the minimum water level. A strainer and drain valve should
be installed at the boiler for periodic draining of scale and sludge. Banging and steam bound traps will occur if the boiler water supplied
to the heat exchanger has steam or is slightly above the low water cut off.
NOTE: It is possible to use live steam in the heat exchanger of the SuperStor Ultra 80 and 119 residential and commercial models
ONLY. Using any other Superstor Ultra model in live steam applications will result in product failure and VOID the warranty.
Never use dielectric fittings or galvanized steel fittings on any domestic water connections. Use only copper or brass fittings. Failure to
follow this caution will result in premature heater failure. Such failure is NOT covered by warranty.
C. DOMESTIC PIPING INLET
Use both thread tape and pipe dope to connect an NPT brass tee. On the run, install a brass drain valve. In the branch, install an NPT
male X ¾” (minimum) pipe adapter. A shut off valve between the city water supply and tank inlet is recommended for ease of service.
It may be recommended to use a back flow preventer
– check local codes. If a back flow preventer or a no return valve is used, a
thermal expansion tank must be installed on the cold water supply between the tank and valve. If the tank is replacing a tankless coil in
the boiler, disconnect coil plumbing and use the cold inlet pipe and hot water outlet pipes for the water heater.
D. TEMPERATURE AND PRESSURE RELIEF VALVE
On SSU-80 and SSU-119 residential and all commercial models, a ¾” temperature and pressure (T&P) port and relief valve are
provided. On all other models, an appropriate T&P valve must be supplied and installed as described in Figure 4.