Rheem Thermal Manual
water to water Hot water
4
04/02/2021
SECTION 1
INSTALLATION
For validity of the Rheem Thermal warranty, installation must be carried out by registered trade person.
Delivery
Reference should be made to the unit specifications to determine weight and lifting requirements.
Packaging materials should be removed upon delivery so to avoid any sweating of the electrical
compartment or potential staining to the case, particularly in tropical areas.
Site Location, Preparation & Unit Positioning
Locating the Heat Pump close to other system equipment like filter, pump, tank, etc will minimise
friction and heat losses in the water circuit
.
It is important that the Clearance Guidelines included in this Manual are read and understood. These
guidelines set out the minimum clearance requirements in respect of servicing.
Service access is required at both ends of the Heat Pump as per the Clearance Guidelines.
Where multiple units are to be installed, minimum clearance requirements increase.
The Heat Pump requires a firm base, say concrete slab. Rubber mounts should be installed
between the unit and slab. Do
NOT
level the unit when mounting. Keep the 25mm fall towards drain.
Plumbing
It is essential that the water recirculating pump and pipe sizes be engineered to suit the particular
application, giving correct water flow through the heat pump as per the specification requirements
of the unit. Inadequate or excessive water flow detracts from heating efficiency and can lead to
damage to the unit. Selection of the recirculating pump must be made in accordance with the design
flow rate and pressure as per the pump manufacturer’s specification. See page 10 for recommended
water flow rates.
If unsure, contact Rheem Thermal for recommendations on the optimum flow rate. Assistance will
be provided where possible in relation to plumbing design and pump selection.
Water connections on the unit are clearly marked as water inlet and water outlet.
The installation of breakable unions on both inlet and outlet pipes will facilitate maintenance and
water drainage of the system. If the unit is situated below the tank level or an open holding tank,
shut off valves should be fitted on the water side of both unions so that removal of the machine is
possible without draining the system.
Where multiple units are installed, the heaters must be installed in parallel to equalise pressure
drops and balance flow through the heaters. Systems of two or more Heat Pumps require a manifold.
All Plumbing should be carried out by qualified tradesman (plumber).
