15
Installation Manual
PART 3: SOLAR WATER HEATER INSTALLATION
(CONT’D)
BOILER BACK-UP HEAT EXCHANGER CONNECTION
(ULTRA SOLAR WATER HEATER WITH BOILER BACK UP ONLY – SB MODELS ONLY)
The Boiler Heat Exchanger Connections are located in the front of the Solar Water Heater. Use a 1”
nominal minimum tube size, wherever you are using zone valves or circulators.
The inlet of the circulator is to be connected to the hot outlet side of the boiler. Be sure the direction
of the arrow on the circulator is facing toward the flow direction from the boiler to the boiler heat
exchanger inlet of the water heater. On the water heater, the boiler return is to be connected to the
return side of the boiler. The return from heating loop should have a flow check or swing check valve
installed before the return pipe from the boiler heat exchanger.
BOILER TANK CONTROL
Insert the boiler tank
control into the con-
trol well provided in
the front of the water
heater. Wire the boil-
er tank control to the
boiler control or
r e l a y c e n t e r .
Additional equip-
ment may be need-
ed in order to wire
the control to the
e x i s t i n g s y s t e m .
Controls also have
the ability to monitor
and displaying solar
collector tempera-
ture and also upper
and lower tank tem-
p e r a t u r e . S e e
Control Installation
Detail (Fig. 3-4).
CIRCULATOR
SIZING
The circulator pump
must be sized for the
related piping and
pressure drop of the
heat exchanger. The
following graph rep-
resents the pressure
drop of the solar heat exchanger. You must consult the solar panel manufacturer for flow require-
ments to assist in pump selection.
REPLACE INSULATION AND PLASTIC COVER USING
THE (2) SCREWS PROVIDED
NOTE:
WHEN INSTALLATION OF SENSOR IS COMPLETE,
STUD LOCATION
1/4-20 NUT TO SECURE
SENSOR TO TANK STUD
SENSOR STUD LOCATION
COVER PROTECTING
BEHIND PLASTIC COVER
REMOVE INSULATION
REMOVE THE PLASTIC
SOLAR PANEL CONTROL
FOR SENSOR FROM
SOLAR PANEL CONTROL
SENSOR COMING FROM
REMOVE SCREWS
SECURING PLASTIC
COVER TO TANK
Fig. 3-4
LP-200-N
REV. 7/26/07
CONTENDER SOLAR
SOLAR PANEL SENSOR INSTALLATION
