Rinnai SUNMASTER Installation Manual download pdf (Page 12)

Rinnai Australia - 10 - Solar Split Systems Operating / Installation Manual

SPECIFICATIONS FOR SYSTEMS

GENERAL

Split solar hot water systems are specified according to the grade of storage cylinder material, cylinder

capacity, number of solar collectors and boost type and capacity. Boost capacity for gas boosted

system depends on the gas booster model selected. Boost capacity for electrically boosted systems

depends on the power rating of electric heating elements and whether one or two electric heating

elements are fitted.

SYSTEM SPECIFICATIONS AND DIMENSIONS

Specifications and principal dimensions for the various systems and components are shown below.



FLOW CONTROL VALVE

A flow control valve is fitted to the pump and controller assembly.

It’s purpose is to allow the water flow rate through the collector collectors and storage cylinder to be

controlled to optimise the performance of the system.



DIFFERENTIAL TEMPERATURE CONTROLLER

The primary task of the differential temperature controller is to control the operation of the pump to

optimize solar energy collection. This task is performed by measuring the temperature differential

between the hot sensor and the cold sensor. When the differential exceeds 9°C the pump is activated

and water passes through the collectors collecting solar energy. When the differential falls below 5°C

the pump is shut down.

A secondary task of the controller is to stop energy collection when the cylinder is full of hot water.

This is referred to as no load protection and the pump is shut down if the temperature of the water

going to the collectors exceeds 65°C. At such a temperature in the base of the cylinder, the

temperature of water in the top of the cylinder is expected to be about 85°C.

Table 2 - System Specifications

System Type

Rinnai ‘Sunmaster’

Systems

SG175, SG215,

SE160, SE200

Rinnai ‘Sunmaster’

Systems

SG270, SG340,

SE315

Rinnai ‘Prestige’

Systems

Connections:

Solar flow and return 1/2” 1/2” 1/2”

PTR Valve 1/2” 1/2” 3/4”

Cold Inlet 3/4” 3/4” 3/4”

Hot Outlet 3/4” 3/4” 3/4”

PTR Valve setting (kPa) 1000 850 850

Rating of PTR Valve supplied (kW) 10 10 10

Expansion Control Valve (ECV) setting

(kPa)

850 700 700

Max supply pressure with ECV (kPa) 680 550 560

Max supply pressure without ECV

(kPa)

800 680 700

Pressure limiting valve rating (kPa)

(supplied by installer if required)

500 500 500

1 2 ... 7 8 9 10 11 12 13 14 15 16 17 ... 63 64

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