Rheem Solar Controller Kit, 299121 Installation Instructions Manual

Installation Instructions

Solar Controller Kit

(Part Number 299121)

SOLAR CONTROLLER KIT

For installation with a solar storage tank with a raised solar hot water inlet

Your solar water heater is designed for the solar collectors to be roof
mounted and the solar storage tank to be installed at ground or floor level.
This solar controller kit is designed to be mounted on the side of the solar
storage tank incorporating a raised solar hot water inlet. The solar control unit
governs the operation of the solar water heater. For full details on the
installation of the solar storage tank, the cold water plumbing supply details
and electrical connections to the tank, refer to the Owners Guide and
Installation Instructions supplied with the solar storage tank. The Owners
Guide also contains consumer information on the operation of the solar water
heater system.

PATENTS

This water heater may be protected by one or more patents or registered designs.

This solar controller kit must be installed and serviced by an authorised person.

Please leave this guide with the householder.

INSTALLATION – SOLAR CONTROL UNIT

The solar control unit is designed to be mounted on the side of the solar
storage tank, with its location above and offset from the solar cold water outlet.
The solar control unit, supplied with a 1.8 metre power cord, requires a 240 V
50 Hz general purpose outlet (GPO) located within 1.2 metres of its installation.
The GPO must have a continuous power supply originating from a circuit other
than the water heater circuit. The GPO is required to be weatherproof if
installed outdoors (refer to

“Connections – Electrical” on page 8).

Part No Kit Components and Description - Controller Kit 299121

126554 Installation instructions solar controller kit 1

052104 Control unit solar pumped assembly 1

220342 Valve assembly air bleed and check

consisting of:
1 x 088058 fitting tee brass ½” screwed Rye 4203
1 x 088071 solar non return valve RMC ½” x ¾” SNR502
1 x 088069 fitting adaptor brass 1” F x ½” M
1 x 220340 air bleed ball valve
1 x 080123 washer 30 OD x 20 ID x 2 Salmson

1

088064 Sensor tee / nipple assembly solar pumped

consisting of:
1 x 088061 tee 3 way / cold sensor
1 x 088062 sensor nipple – solar pumped
1 x 087026 O ring 5/16” ID x 1/16” BS011 silicone

1

223603 Pipe preformed tube ½” x 240 mm long 1

080031 Screws No 8 x 13 mm 4

088063 Fitting union male ½” x ½” Rye 4910 3

088039 Fitting nipple brass ¾” x ½” 1

080079 Plug ½” BSP brass 1

Cable tie black 150 mm x 3 mm 3

Insulation pipe 12 mm ID x 280 mm long 1

Insulation pipe 35 mm ID x 150 mm long 1

Insulation pipe 35 mm ID x 50 mm long 1

Notes:

• Care must be taken when mounting the solar control unit to the side of the

solar storage tank. Damage to the cylinder as a result of mounting the solar
control unit to the jacket will void the warranty (refer to

“Saddling - Pipe

Work”

on page 7).

• Use thread sealing tape or an approved thread sealant on all fittings.

2

INSTALLATION – SOLAR CONTROL UNIT

3

SOLAR STORAGE TANK WITH RAISED SOLAR HOT INLET

Numbers in parentheses

refer to items on diagram on page 5.

To connect the solar cold pipe and mount the solar control unit on a solar
storage tank with a raised solar hot inlet (and raised heating unit):

• Assemble a ½” x ½” hex nipple (1) into the branch outlet of the 4 way tee (2)

(ensure the compression end of the nipple is exposed) and the ½” x ¾” hex
nipple (3) in the end of the 4 way tee, so that when the assembly is fitted to
the cold water inlet of the solar storage tank, the compression nipple (1) is
orientated vertically upwards and the cold sensor housing is orientated to
the rear of the solar storage tank.

• Fit the assembly to the solar cold water outlet of the solar storage tank.

• Fit the ½”plug (15) into the end of the 4 way tee.

• Connect the DN15 preformed pipe (4) to the branch tee connection, using

the compression nut (5) and olive (6) provided, ensuring the longer straight
end is orientated upwards.

• Insulate the preformed pipe (4) with the 280 mm long x 12 mm diam

insulation (12) provided, ensuring the insulation is pushed down the full
length of the pipe.

• Fit a ½” x ½” hex nipple (1) to the outlet of the circulator (7) mounted in the

solar control unit (8) (ensure the compression end of the nipple is exposed).

• Locate the solar control unit (8) by connecting the DN15 preformed pipe (4)

to the nipple on the inlet of the circulator (7) using the compression nut (5)
and olive (6) provided.

• Secure the solar control unit (8) to the solar storage tank using the four

screws (9) provided.

• Connect the solar cold pipe (to the collector) to the nipple (1) on the outlet

side of the circulator (7) using the compression nut (5) and olive (6)
provided.

• Insert the cold sensor probe (10) into the cold sensor housing on the 4 way

tee (2), ensuring the ‘O’ ring is in position on the probe. Lock it into position
with the locking washer and clip provided.

• Connect the hot sensor lead (from the solar collector installation) to the hot

sensor cable connector at the underside of the solar control unit (8).

INSTALLATION – SOLAR CONTROL UNIT

4

To connect the solar hot pipe to the solar storage tank:

• Insulate the solar non return valve of the air bleed valve and solar non

return valve assembly (11) with the 50 mm long x 35 mm diam
insulation (13) provided.

• Fit the air bleed valve and solar non return valve assembly (11) to the solar

hot water inlet of the solar storage tank. Ensure the bleed valve outlet is
pointing vertically downwards.

• Connect a DN15 copper drain line to the bleed valve to carry the discharge

clear of the water heater and solar control unit (refer to

“Bleed Valve Drain”

page

7), using the compression nut and olive provided.

• Fit a ½” x ½” hex nipple (1) to the exposed end (inlet) of the air bleed valve

and solar non return valve assembly (11) (ensure the compression end of
the nipple is exposed).

• Connect the solar hot pipe (from the collector) to the nipple (1) on the air

bleed valve and solar non return valve assembly (11) using the
compression nut (5) and olive (6) provided.

• Insulate the tee and bleed valve, from the solar hot pipe to the drain line of

the bleed valve, with the 150 mm long x 35 mm diam insulation (13) and
secure with the cable ties (14) provided.

• Insulate the drain line from the bleed valve with closed cell polymer

insulation or similar (minimum thickness 13 mm). The insulation must be
weatherproof and UV resistant if exposed.

to solar

collectors

from solar

collectors

refer to the

installation diagram

on page 5

for

assembly details of

solar cold and hot

pipe connections

Solar Storage Tank with Solar Control Unit