Rheem HPHD-135HNU-483 - Page 47

Commercial Air to Water Heat Pump Water Heater
47
COMMISSIONING
4. Change secondary heat pump 'Out air sensor', 'Stor-
age tank temp' sensor and 'Building flow temp' sensor
parameters to 'No'.
• Go to the Service menu (Service>Service Set-
tings- password 0022>Thermoregulation). Refer
to page 50 to see the chart for navigating Service
menu and page 53 for Thermoregulation section
or see the table below.
5. Turn OFF the Secondary heat pump.
• If there is only 1 secondary proceed directly to
step 6.
• If there are 2 or 3 Secondary heat pumps repeat
step 3 to step 5 for Secondary 2 and Secondary 3
respectively using the values for respective Sec-
ondary heat pumps.
6. Turn ON Primary heat pump and set the primary ad-
dress as stated in step 3.
7. After commissioning the Primary heat pump, go to
the Service menu (Service>Service Settings- pass-
word 0022>Thermoregulation>no. of compressor) on
the Primary heat pump and change the number of
compressors according to the number of heat pumps
interconnected together.
Refer to page 50 to see the chart for navigating Service
menu and page 53 for Thermoregulation section or see
the table below.
8. Turn on all the heat pumps.
9. Reset alarms on each heat pump. Skip this step if
there are no alarms.
10. Set time/tariff control on Primary heat pump if re-
quired. Refer to page 50 to see the chart for navigat-
ing the control panel display.
If the water heaters are full of cold water, the fan will ac-
tivate on each water heater and heating will commence
unless the ambient air temperature is below the ambient
sensor setpoint, in which case the auxiliary boost will op-
erate, if installed.
It is important to wait for five minutes after each heat
pump has activated to ensure it continues to operate and
is functioning correctly.
NOTE: The heat pump may not turn on immediately
when it is first switched on, if it is switched on within 20
minutes to 2 hours of it having been switched off at the
isolating switch, or the heat pump has just completed a
heating cycle. The heat pump will wait until the conditions
for start-up are favorable in order to protect the compres-
sor from damage. This may take up to 20 minutes to 2
hours. The auxiliary booster (if installed) will operate in-
stead of the heat pump if the ambient air temperature is
less than the ambient sensor setpoint.
Explain to a responsible officer the functions and opera-
tion of the heat pumps. Upon completion of the installation
and commissioning of the water heating system, leave
this guide with the responsible officer.
Parameter Sub Parameter Primary Secondary
Thermoregulation 05
Blackout delay 10s Screen N/A
No of compressors
Set as required
(default 1)
Screen N/A
Compressor staging Simultaneous Screen N/A
Controlling sensor Tank Screen N/A
I/O Cong 05
Out air sensor Yes No
Sensor type Carel NTC Carel NTC
Thermoregulation 06
(Enable unit On/Off)
By digital input No Screen N/A
By supervisor No Screen N/A
By ow switch Not avail Screen N/A
Dig input 6 is for: Comp O/Load Screen N/A
I/O Cong 06b
Storage tank temp Yes No
Sensor type Carel NTC Carel NTC
Building ow temp Yes No
Parameter Sub Parameter Primary
Thermoregulation 05
Blackout delay 10s
No of compressors (Number
of heat pumps)
Set as required (default 1)
Compressor staging Simultaneous
Controlling sensor Tank