Installation / Operation Instruction Manual

Plumbing Connections
1) This unit is supplied with compression fittings, USE THESE; DO NOT USE TAPERED THREAD PIPE
FITTINGS AND DO NOT SOLDER PIPE TO THE INLET OR OUTLET(SEE FIGURE 1).
2) Ensure that the pipes are correctly aligned with the inlet and outlet bosses in order to avoid excessive stress
on the heater body molding.
NOTE: When soldering pipe joints, remove the unit from the wall. Serious damage can occur if any soldering is
done while pipes are connected to the unit. Run water through the supply pipe to remove all debris from the
pipe before connecting the unit. Failure to do so could cause damage to the flow switch.
3) Install isolating valves (full flow ball valve type) in both the inlet and outlet lines. This allows the unit to be
isolated for maintenance (figure 2).
4) When all plumbing is complete, inspect the system for water leaks at all the plumbing connections. If a water
leak is present take corrective action. If a water leak is at the compression fitting, slowly tighten compression nut
until it the water leak ceases.. Fully open both inlet and outlet BALL VALVES.
Run all hot water outlets fed by this unit, one at a time until the water flow is continuous and free from “gulping”
and all visible air pockets.
COLD WATER
INLET
COMPRESSION
FITTING
DO NOT SOLDER
1 1/2”
Figure 1
NOTE:
ALL MOUNTING AND PLUMBING MUST BE COMPLETED BEFORE PROCEEDING
WITH THE ELECTRICAL HOOK-UP.
TEST THE INSTALLATION FOR LEAKS BEFORE CONNECTING THE ELECTRICAL
SUPPLY.
HOT WATER
OUTLET
COMPRESSION
FITTING
DO NOT SOLDER