RHEEM THERMAL AIR SOURCE HEAT PUMP INSTALLATION, MAINTENANCE & SERVICE MANUAL
RHEEM HOT WATER SYSTEM (ASEAN REGION)
8 |
P a g e
For systems comprised of multiple heat pump units, the thermostat sensor and well
may be provided as follows depending on client requirement:
Provided loose to allow installation of thermostat controller display in heat pump control
panel (located separately to the heat pumps) with probe installed in the hot water
storage tank.
Provided in the nominated lead-unit (i.e. the control heat pump) with relays fitted to the
slave units to allow control wiring to be run to these units.
The thermostat sensor is the controlling device in the heating system. This determines
whether the heat pump unit should run and is activated in response to the parameters
set for temperature control. That is, the heat pump will run when the entering water
temperature (EWT) or tank temperature is less than the desired set point (normally with
a 2°K split) and stop running when the EWT is a set point. The heat pump will likewise
not run without water flow so there is a very direct link between the heat pump, hot
water recirculating pump and thermostat controller.
The thermostat sensor can be located in the hot water tank with control wiring back to
the water recirculating pump. The operation of the recirculating pump will be controlled
by tank temperature, with water flow to the heat pump activating its operation. This
approach reduces recirculating pump and heat pump run-hours and duty. Contact
manufacturer at time of ordered to discuss wiring requirements.
•
Rheem IQ
TM
Intelligent controller is provided as an option. It is an advanced control
system to perform BMS monitoring, error/fault diagnostics, etc. There are two types of
installation of Rheem IQ
TM
, 1) mounted on the external panel of the heat pump, 2) wired
to a separate control panel (optional). Refer to the Owners Guide and Installation
Instructions supplied with the heat pump for information regarding system installation
and product application.
