Water Tank Refill - Bosch CE SPLIT series Installation And Maintenance Manual

Hr water Piping
5. Once drained the tank should be flushed with
cold water until the water leaving the drain hose
is clear and free of sediment.
6. Close all valves and remove the drain hose.
7. Install HR water piping.
Hr waTEr PIPInG:
All hot water piping should be a minimum of 3/8" O.D.
copper tube to a maximum distance of fifteen (15) feet.
For distances beyond fifteen feet but not exceeding sixty
(60) feet use 1/2" copper tube. Separately insulate all
exposed surface of both connecting water lines with
3/8" wall closed cell insulation. Install isolation valves on
supply and return to the heat recovery. (Figure #12)

waTEr TanK rEfIll:

1. Open the cold water supply to the tank.
2. Open a hot water faucet to vent air from the system
until water flows from the faucet, then close.
3. Depress the hot water tank pressure relief valve
handle to ensure there is no air remaining in the tank.
4. Carefully inspect all plumbing for water leaks.
Correct as required.
5. Purge all air from HR by depressing the schrader
valve on the HR Unit. Allow all air to bleed out
until water appears at the valve.
Revised 03-11
figure #12
Subject to change without prior notice
6. Before restoring the power or fuel supply to the water
heater, adjust the temperature setting on the tank
thermostat(s) to ensure maximum utilization of the
heat available from the refrigeration system and
conserve the most energy. On tanks with both upper
and lower elements and thermostats, the lower
element should be turned down to 100° F, while the
upper element should be adjusted to 120° F.
Depending upon the specific needs of the customer,
you may need to adjust the upper element differently.
On tanks with a single thermostat lower the
thermostat setting to 120° F or the "LOW" position.
7. After thermostat adjustments are completed,
replace access cover and restore electrical or
fuel supply to water heater.
InITIal STarT-uP:
1. Make sure all valves in heat recovery water
piping system are open. NEVER OPERATE HR
PUMP DRY.
2. Turn on the heat pump. The HR pump should not
run if the compressor is not running.
3. Turn HR switch to the "ON" position. The pump
will operate if entering water temperature to HR
is below 120° F.
4. The temperature difference between the water
entering and leaving the heat recovery should be
5° to 15° F.
6 720 220 049
CE Split Series 17