HTP SS-26-FP Installation, Start-Up, Maintenance, Parts, Warranty Download Page 13

lp-364 Rev. 000 Rel. 007 Date 2.12.18

13

Always consider the weight of the collector and the structural 

integrity of the wall before installation. HTP requires that 

installations be inspected and approved by authorized building 

inspectors and comply with local and state codes BEFORE 

commissioning the system. Failure to do so could result in 

property damage, severe personal injury, or death.

Part 6 - Plumbing Connections

A. Temperature Sensor Insertion

Temperature sensor wells are located on either side of the collector. 

Insert the sensor into the well below the hot out port. Ensure that 

the sensor and cable used on the collector are high temperature 

rated (up to 395

o

F). The sensor cable should not come in direct 

contact with the piping.

Ensure that any pipe insulation is watertight. Use silicone sealant to 

ensure a watertight seal against the collector.

LP-364-B
01/27/17

Figure 4 - Sensor Cable Detail

B. Header Connection

Never use dielectric unions or galvanized steel fittings when 

connecting to a stainless steel storage tank or heater. Use only 

copper or brass fittings. Teflon thread sealant must be used on 

all connections. Failure to follow this information could result in 

premature product failure and property damage. Such damages 

ARE NOT covered by product warranty.

Non-Galvanized Connections / Pipe Fitting

To ensure a sound seal, use plumbing thread glue or Teflon tape 

approved for use in glycol based systems. Tighten using two 

wrenches, taking care not to stress the copper pipe. Do not over 

tighten.

Brazing/Sweating/Soldering

 to the collector is acceptable, but not 

recommended, as doing so can damage the header grommet. Care 

must be taken to avoid exposing the silicone rubber seal to the torch 

flame. Ideally, place a wet cotton cloth against the rubber seal to 

prevent heat damage.

C. Air Purge

Once the inlet and outlet are connected to the plumbing system, 

the collector loop should be purged of air.

1. Open Loop

For a system without an auto-air vent, a drain valve on the supply 

line should be installed along with a ball valve or a metal coin vent 

on the tank side. With the ball valve closed, the drain valve can be 

opened to allow air to escape as water pressure forces through the 

line.

When opening the drain valve, released water may be hot. Steam 

may release as well. Failure to take caution when opening drain valve 

could result in serious personal injury or death.

Once the drain valve no longer releases air, close it. Then open the ball 

valve so normal operation may begin.

If an auto-air vent is installed on the outlet of the collector, air will 

automatically eliminate from the solar line. If using a manual air vent, 

open it until all air is eliminated.

2. Pressure Open Loop

Run the pump at the highest speed setting, forcing air out of the 

collector and back into the tank. If an auto-air vent is installed on the 

outlet of the collector, air will automatically eliminate from the solar 

line. If using a manual air vent, open it until all air is eliminated.

3. Closed Loop

The solar loop may be filled with potable water or a glycol / potable 

water mix, unpressurized (drain back system), or vented and 

pressurized. The exact process will depend on the design of the loop 

and components used.

NOTE:

 A drain back system does not need to be purged.

D. Plumbing Check

Water vapor may appear on the inside of the collector glass when 

initially installed. This is not a problem and will disappear after a few 

days of operation. Consult your dealer or factory representative if 

water vapor does not clear up after a week of sunny weather.

E. Glycol Freeze Protection

Only use food grade propylene glycol, FDA rated as GRAS (Generally 

Recognized As Safe), with additives that provide resistance to 

breakdown during high temperatures. Glycol pH should be checked 

periodically and replaced as specified by the manufacturer.

F. Insulation

Heavily insulate all piping running to and from the collector with high 

quality insulation of at least 0.6” thickness (thicker in cold climates). 

Heat loss from the piping can be significant. Particular attention should 

be taken to insulate any possible points of heat loss. Insulations should 

have a temperature rating of 250

o

F.

Ensure the insulation is tight against the collector casing, thus 

minimizing heat loss from the inlet and outlet. High quality silicone 

sealant should be used to prevent water from entering the temperature 

probe port and/or in between the piping and insulation foam.

Insulation foam exposed to direct sunlight should be protected against 

UV related degradation by wrapping/covering with UV protective 

material, such as adhesive back aluminum foil, PVC wrap, or similar.

For systems designed to allow stagnation, high temperature rated 

insulation such as glass wool or mineral wool should be used on 

piping close to the collector (6’). Glass wool insulation may come with 

an external foil wrap, but any cuts made during installation should be 

sealed with watertight, UV stabilized material, such as adhesive backed 

aluminum foil or PVC wrap.

Circulating pump volumes can be a source of significant heat loss and 

should be insulated. Some pumps come standard with a molded foam 

casing which has good insulation properties. If the pump does not 

have any insulation, the same foam insulation used on the pipe can 

be used to cover the pump. This insulation should be secured in place 

with good quality nylon cable ties or adhesive tape.

NOTE: 

Certain pumps are not designed to be insulated. Please contact 

the pump manufacturer if in doubt.

All internal and external piping should be insulated. This includes at 

least the 3” closest to the hot water outlet of the tank, as this copper 

pipe is a significant point of passive heat loss.

Summary of Contents for SS-26-FP

Page 1: ...g Perform steps in the given order Failure to do so could result in substantial property damage severe personal injury or death HTP reserves the right to make product changes or updates without notice and will not be held liable for typographical errors in literature The surfaces of these products contacted by potable consumable water contain less than 0 25 lead by weight as required by the Safe D...

Page 2: ...to codes and requirements where they differ from the furnished instructions Additional publications which should guide the installer include Solar Water Heating System Design and Installation Guidelines SRCC OG 300 available from Solar Rating Certification Corporation 400 High Table of Contents Introduction About Your Solar Collector 3 Part 1 General Safety Information 3 A When Servicing the Solar...

Page 3: ... warranty ALL PIPING AND PLUMBING CONNECTIONS SHOULD BE MADE WITH COPPER PIPE ONLY No less than I D copper tube of the type meeting local codes must be used for piping Pipe runs must be solidly attached with proper clamping methods Soldered connections should be secured with 95 5 lead free solder Use only pipe rated for 250oF minimum on both the collector return and supply piping Part 5 Roof Wall ...

Page 4: ...g or sealing compounds in a solar water heating system Gaskets and seals in the system may be damaged This can result in substantial property damage Do not use homemade cures or patent medicines Damage to the system substantial property damage and or serious personal injury may result I Freeze Protection NOTE Consider piping and installation when determining solar collector location Place the sola...

Page 5: ...ked periodically to prevent it from becoming acidic Please refer to guidelines provided by the glycol manufacturer regarding glycol maintenance ambient temperature drops below freezing the controller can be programmed to provide freeze protection by circulating warm water from the tank through the solar collectors For open loop systems the normal operating pressure should be less than 72 5 psi Thi...

Page 6: ... operating condition and not used for two weeks or more a quantity of highly flammable hydrogen may accumulate in the top of the water cylinder To dissipate hydrogen safely it is recommended to turn on a hot water tap for several minutes at a sink basin or bath but not a dishwasher clothes washer or other electrical or heat producing appliance During this process there must be no smoking open flam...

Page 7: ... suspicious on the bill of lading even if damage is not apparent If damage is sufficient to prevent the product s use it may be prudent to not accept all or part of the shipment and immediately alert your supplier NOTE HTP DOES NOT WARRANTTHE COLLECTOR AGAINST FAILURE AS A RESULT OF DAMAGE INCURRED DURING TRANSPORT OR INSTALLATION C Tools and Materials Make sure you have all necessary tools materi...

Page 8: ...at Roof D Ground Mount E Facade Figure 2 Suggested Solar Collector Mounting Designs 2 Collector Angle Tilt It is common for collectors to be installed at an angle that corresponds to the installation latitude While adhering to this guideline an angle of latitude 10o is acceptable and will not greatly reduce solar output The solar collector should be installed at an angle between 20 80o to ensure o...

Page 9: ... the collector any components used in the system must meet potable water requirements P Mounting Frame Four mounting choices are available for HTP solar collectors Tilt mounts or 2 3 mounts flush mounts or rack mounts see Part 4 Feet are supplied to fasten the panel securely to the roof It is important that frame attachment points and externally supplied fasteners are of suitable structural streng...

Page 10: ...ounts Fully loosen the tilt hinge set screws Slide the tilt hinges to desired location along the top side of the collector Leave a 1 space between the tilt hinges Tighten set screw with a 7 16 wrench to a maximum of 10 foot pounds to lock the flush mount into position Position the E1022 struts between the two tilt hinges on each side and align the hole in the strut with holes in the tilt hinge Ins...

Page 11: ...t Repeat for other strut Mount the triangle feet to the structure using appropriate fasteners and sealant Check for collector alignment and tighten all fasteners Side Mount Location for Selected Models Collector Model Side Mount Location From Bottom of Collector SS 26 FP 51 5 SS 32 FP 64 8 SS 40 FP 80 8 Table 5 Side Mount Location Flush Mounts Part 8600P 012 The flush mount package contains enough...

Page 12: ... B Wall Mounting Wall attachment methods depend largely on wall material For brick or concrete walls secure collector feet with stainless steel expansion bolts For wood or synthetic boarding stainless steel screws that can penetrate into the wall framework may be suitable for mounting If the strength of these screws is a concern use bolts that run directly through the wood with a large washer or m...

Page 13: ... setting forcing air out of the collector and back into the tank If an auto air vent is installed on the outlet of the collector air will automatically eliminate from the solar line If using a manual air vent open it until all air is eliminated 3 Closed Loop The solar loop may be filled with potable water or a glycol potable water mix unpressurized drain back system or vented and pressurized The e...

Page 14: ...vel in the drain back tank to the top of the solar panels vertical lift is the same as head loss Refer to the chart below for pressure drop figures with a 40 glycol solution When using potable water as HTF there is a further 20 reduction in pressure drop NOTE To convert psi to head feet multiply psi by 2 31 and divide total by specific gravity 1 for water 1 02 for 30 propylene glycol 1 04 for 50 p...

Page 15: ...e flow valves and meters for balanced flow The following configurations may not work in drain back systems These drawings can be applied to various system configurations but may not meet certain requirements C Pressure System Plumbing Panel Attachment See the following diagram for examples of panel plumbing attachments for pressure systems This diagram can be used for either vacuum tube or flat pl...

Page 16: ...fittings connections NOTE In good weather the water may be hot or have built up pressure so take care when opening the drain valve 3 Allow the manifold to sit in a vented state for 5 10 min to boil dry may take longer in poor weather 4 Always leave one drain valve or fitting open Otherwise the system may build up pressure when it heats For draining of other types of systems please refer to specifi...

Page 17: ...been given to customer and basic operation explained Functional checks for controller and pump have been completed Water quality has been checked Collector loop piping has been flushed and cleaned During normal daily hot water use if the temperature relief valve on the tank or collector is regularly dumping hot water more than just a dribble there may be a problem with the system POSSIBLE CAUSES 1...

Page 18: ... solar collector or any component part or connection thereto should leak the resulting flow of water will not cause damage to the area in which it is installed 5 Maintain the solar collector in accordance with the maintenance procedure listed in the manufacturer s provided instructions 6 Maintain all related system components in good operating condition 7 Use the solar collector in an open system ...

Page 19: ...t HTP within thirty 30 days of the date of our request to return the product After receipt of the returned product HTP may require as many as thirty 30 additional days for product testing NOTE Any components or heaters returned to HTP for warranty analysis will become the property of HTP and will not be returned even if credit is denied If you have questions about the coverage of this warranty ple...

Page 20: ...tive Distributor Dealer Please insert contact details Customer Installation Record Form The following form should be completed by the installer for you to keep as a record of the installation in case of a warranty claim After reading the important notes at the bottom of the page please also sign this document Customer s Name Date of Installation Installation Address Product Name Serial Number s Co...

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