8. STARTUP PROCEDURE FOR ALL MODELS
-13-
1. PURGE HEAT EXCHANGER:
The heat exchanger should
be free of large air pockets to allow the circulator to
operate properly. Using the diagram below as a guide,
isolate the boiler return line and flush the loop until large air
pockets are purged. After this, the air elimination
equipment will collect smaller air bubbles to maximize
efficiency.
2. FILL TANK:
Open the hot water fixture furthest from the
heater. Open the cold water supply and allow the water to
run until air stops emerging. Until all air is purged from the
hot water system, air pockets may appear at any hot water
fixture. This is considered normal and will clear as hot
water is used.
3. START HEATER:
Turn power on to the unit. The knob
should be rotated to the 120°F mark. The circulator and
boiler should start momentarily. If not, check wiring and
consult the troubleshooting section in this manual.
4. CHECK OPERATION:
The water heater will begin to heat.
Depending upon the size of the water heater, output of the
boiler and the space heating load, the unit should typically
reach set temperature within 15 to 60 minutes. If heating
does not occur, consult the troubleshooting section in this
manual. Note: Large heaters coupled with small boilers
may exceed this time period upon initial startup.
5. SET TEMPERATURE:
The water heater control should be
set to the minimum temperature consistent with the user’s
needs. This maximizes efficiency and reduces scald
potential.