-4-
4.
CH-41Z/CH-80Z PIPING INSTALLATION
DOMESTIC WATER PIPING
1. Connect the cold water supply to the pipe labeled COLD
WATER
Do not apply heat to this fitting when
making sweat connections to heater.
Sweat tubing to adapter before fitting adapter to cold water
inlet of heater. It is imperative that no heat be applied to the
cold water inlet, as it contains a nonmetallic dip tube.
2. Connect the HOT WATER piping to the domestic hot water
system.
3. When all domestic water piping is complete, open the cold
water supply and allow some water to enter the tank. Look
and listen for signs of leaks and repair as necessary before
continuing.
Note: If installing on a city supply, ensure a dedicated
Thermal Expansion tank (Therm-X-Trol
®
or equivalent) is
used.
Note: If a water heater is installed in a closed water supply
system, such as one having a back-flow preventer in the
cold water supply line, means shall be provided to control
thermal expansion. Contact the water supplier or local
plumbing inspector on how to control this situation.
4. Install a blowdown tube on the T&P relief valve outlet.
Plumb to within 6 inches above a floor drain or as directed
by plumbing code.
Note: No valve is to be placed between the T&P relief valve
and the tank.
Note: Valves for reducing point of use temperature by
mixing cold and hot water are available. Consult a licensed
plumber or the local plumbing authority.
BOILER PIPING
1. Plumb the circulator or zone valve onto the BOILER
SUPPLY fitting.
2. Pipe the BOILER RETURN connection to the boiler return
fitting.
Be sure the return line is NOT
plumbed to the suction side of any
heating circulators. This may require moving the
heating circulator off the boiler tapping on packaged
boilers. Failure to do so will result in overheating and
tank damage when the heating system is in
operation.
3. Install a weighted flow check on the boiler return line. This
is not necessary on systems utilizing a zone valve to control
the BoilerMate
®
temperature.
4. After completing the boiler piping, slowly open the boiler fill
valve and pressurize the BoilerMate
®
loop. Check for leaks
and repair as necessary. Proceed to the appropriate wiring
section in this manual.
If installing on city water supply a
properly sized THERM-X-TROL
®
is
required with the BoilerMate
®
and should be installed as set
forth in the THERM-X-TROL
®
product installation manual.
LEFT . . . . . . . . . . . . . . . . 1"
RIGHT. . . . . . . . . . . . . . . 1"
FRONT . . . . . . . . . . . . . 30"
HEAD ROOM . . . . . . . . 48"
REAR . . . . . . . . . . . . . . . 1"
Recommended Clearance For Servicing
WIRING BOX
CONTROL
(AQUASTAT)
PIPING CONNECTIONS
DRAIN VALVE
AQUASTAT
BOILER RETURN
BOILER SUPPLY
TEMPERATURE
SENSOR WELL
HOT WATER
OUTLET
COLD WATER
SUPPLY
FRONT VIEW
TOP VIEW
