Pump packs for run around coil heat recovery
Reclaim Plus Pump Packs are run around coil pump packs that circulate the closed loop of water or glycol between the extract and supply coils of a runaround heat recovery system. Each pack is pre-piped on one powder-coated steel skid, with an in-line circulating pump with inverter speed control, an off-line pressurisation set, a 24Â litre expansion vessel and full bore isolating valves. There are two models, Reclaim 2L and Reclaim 6L, identical apart from the circulating pump: the Reclaim 2L circulates a nominal 2Â litres/s and the Reclaim 6L a nominal 6Â litres/s.
Supplied by S & P Coil Products Limited (SPC), Reclaim Plus Pump Packs are matched to the runaround coils SPC makes in Leicester, so the coils and the pump pack for a heat recovery loop can come from one supplier. They are used in commercial, public and industrial buildings wherever supply and extract airstreams are kept apart.
Two models
Reclaim 2L and Reclaim 6L
One skid
Pre-piped pump, pressurisation and vessel
Inverter speed control
Flow set by pump speed
Glycol ready
Up to 30% glycol for frost protection
2 or 6 l/s
Nominal loop flow of the Reclaim 2L and Reclaim 6L. SPC selects the pack from the flow rate specified for the coils.
230 or 400 V
Reclaim 2L pump: 230Â V single phase, 0.75Â kW. Reclaim 6L pump: 400Â V three phase, 3.0Â kW. Pressurisation set: 230Â V single phase on both.
24 L vessel
Diaphragm expansion vessel preset to 1.5Â bar, with an off-line pressurisation set rated to 2.4Â bar, on both models.
90 or 115 kg
Approximate weight of the Reclaim 2L and Reclaim 6L, each on a single steel skid for the plant room floor.
What is a run around coil pump pack?
A run around coil pump pack is the pumping and pressurisation set for the closed loop that joins the coils of a runaround heat recovery system. The circulating pump carries the fluid from the extract coil, where it picks up heat from the air leaving the building, to the supply coil, where that heat warms the incoming fresh air. The pressurisation set and expansion vessel keep the loop at its working pressure as the fluid warms, cools and expands, and the isolating valves let the pump be serviced.
Reclaim Plus Pump Packs put all of these parts on one skid, so the M&E contractor connects the loop pipework and the electrical supplies rather than building a pump set on site. On a runaround system the pump discharge connects to the supply coil’s flow pipe, and the pump runs at the flow rate specified for the coils, set with its speed control rather than with valves.
A Reclaim Plus Pump Pack: the inverter-controlled circulating pump and the expansion vessel on the steel skid.
Reclaim Plus Pump Packs are designed to work with SPC Runaround Coils, which are made to order in Leicester for each project’s airflows. SPC also makes water coils, refrigerant coils, steam coils and electric heater batteries: see the full range on our Heating and Cooling Coils page.
Reclaim Plus Pump Pack specification
The Reclaim 2L and Reclaim 6L are the two Reclaim Plus Pump Pack models, identical apart from the circulating pump. The runaround coils they serve have no standard sizes: each coil is made to order for the project’s airflows. The table below is taken from the Reclaim Plus Pump Pack Leaflet; pump curves are in the leaflet and IOMÂ 39.
| Feature | Reclaim 2L | Reclaim 6L |
|---|---|---|
| Nominal flow | 2 litres/s | 6 litres/s |
| Circulating pump | In-line single stage centrifugal pump with inverter speed control | |
| Pump supply | 230 V, single phase, 50 Hz | 400 V, three phase, 50 Hz |
| Motor rating | 0.75 kW | 3.0 kW |
| Full load current | 4.2 A | 6.0 A |
| Rotational speed | 2,780 rpm | 2,900 rpm |
| Pump materials | Cast iron housing, stainless steel impeller, silicon carbide seal | |
| Sound pressure level | Below 70 dB(A) | 59 dB(A) |
| Expansion vessel | 24 litres, diaphragm type, preset to 1.5 bar | |
| Pressurisation set | Off-line, 230 V single phase, 25 W; piston pump, maximum 2.4 bar and 80 litres/hour; 4.5 litre break tank, fill valve, pressure switch (0.7 to 6.0 bar range), 50 mm pressure gauge (0 to 6 bar) and overflow connector | |
| Loop connections | 1 1/4″ BSPF | 2″ BSPF |
| Water inlet and overflow | 1/2″ BSPM water inlet; 3/4″ overflow | |
| Valves | Full bore shut-off valves on the pump suction and discharge | |
| Loop fluid | Water, or glycol solutions of up to 30% for frost protection | |
| Controls | Remote control device supplied as standard; terminals for remote enable and disable switching | |
| Base | Powder-coated steel skid, with all components mounted and pre-piped | |
| Approximate weight | 90 kg | 115 kg |
| Location | Indoor plant rooms; outdoor mounting needs a ventilated enclosure | |
| Supplied by | S & P Coil Products Limited (SPC), Leicester, UK | |
Reclaim Plus Pump Pack components, controls and installation
Every Reclaim Plus Pump Pack has the same parts, mounted and pre-piped on one powder-coated steel skid.
- Circulating pump: an in-line single stage centrifugal pump with inverter speed control. This is the only part that differs between the Reclaim 2L and Reclaim 6L.
- Pressurisation set: an off-line set with a piston pump, break tank, fill valve, pressure control switch, pressure gauge and overflow connector, on a 230Â V single phase supply for both models.
- Expansion vessel: a 24Â litre diaphragm vessel on the suction side of the pump.
- Isolating valves: full bore shut-off valves on the pump suction and discharge, so the pump can be isolated for servicing.
Reclaim Plus Pump Packs use the circulating pump’s own inverter speed control to set the loop flow.
- Speed control: the pump speed is set at the pump’s control panel. On a runaround system the pump runs at the flow rate specified for the coils, and the flow is adjusted with the pump speed rather than with valves.
- Operating modes: the pump can be set to normal, stop, minimum or maximum operation, and is set to normal at the factory.
- Remote control: a remote control device is supplied as standard for the circulating pump’s features.
- Remote enable and disable: terminals let the pack be switched on and off remotely, for example by a building management system (BMS) or the air handling unit’s controls.
Reclaim Plus Pump Packs are supplied by SPC for installation, filling and commissioning by your M&E contractor, following the Reclaim Plus Pump Pack IOMÂ 39.
- Location: the packs are for indoor installation, on a flat, level and solid surface in a dry, well ventilated plant room. Outdoor mounting needs a ventilated, weatherproof enclosure.
- Connections: on a runaround system the pump discharge connects to the supply coil’s flow pipe. The pump and the pressurisation set have separate electrical supplies.
- Filling: the system is flushed with a chemical cleaner, then filled through the fill valve, vented at the high points and dosed with inhibitor or glycol.
- Maintenance: the packs are largely maintenance free, with motor bearings sealed for life. Check the glycol concentration, keep the make-up water feed clear, vent the system regularly and run idle pumps briefly each week. Never run the pump dry or with its isolating valves closed.
Where are Reclaim Plus Pump Packs used?
Reclaim Plus Pump Packs circulate runaround heat recovery loops in commercial, public and industrial buildings, such as offices, schools, hospitals and factories. Typical uses include:
Run around coil heat recovery
Circulating the loop between an extract coil and a supply coil, so heat from the air leaving the building warms the incoming fresh air.
Separate supply and extract plant
Heat recovery between air handling units or duct runs that are not next to each other, linked only by the loop pipework.
Several coils on one loop
Loops that serve more than one extract or supply coil, for buildings with more than one air handling plant.
Frost protected loops
Loops filled with water, or with glycol solutions of up to 30% where the loop could otherwise freeze.
Summer pre-cooling
The same loop cools the supply air in summer whenever the outside air is significantly warmer than the extract air.
Plant rooms
Indoor plant rooms, with a ventilated enclosure where the pack has to be mounted outdoors.
Selection and design support for Reclaim Plus Pump Packs
Pump pack selection, matching runaround coils, training and technical support from SPC.
Get a pump pack selection
Send the coil and loop details, or the supply and extract airflows, and SPC's technical team will select the Reclaim 2L or 6L.
SPC runaround coils
The extract and supply coils for the loop, made to order in Leicester for each project's airflows and space.
Coil heat exchanger CPD
SPC's CIBSE approved CPD: An Introduction to Coil Heat Exchangers.
Technical support
Help with installation, filling and commissioning, with each step set out in IOM 39.
SPC’s coil CPD is listed on the CIBSE CPD directory.
Discuss your run around coil pump pack
Need a pump pack for a runaround heat recovery loop in a commercial, public or industrial building? Send us the coil and loop details, or the supply and extract airflows, and our technical team will select the right Reclaim Plus Pump Pack and runaround coils. Call 0116 249 0044 or email spc@spc-hvac.co.uk.
Frequently Asked Questions
The two Reclaim Plus Pump Packs are identical apart from the circulating pump. The Reclaim 2L circulates a nominal 2 litres/s with a 230 V single phase, 0.75 kW pump. The Reclaim 6L circulates a nominal 6 litres/s with a 400 V three phase, 3.0 kW pump. Both have the same pressurisation set, 24 litre expansion vessel, isolating valves and skid.
It depends on the flow rate the runaround coils need and the pressure drop of the coils and loop pipework. SPC’s technical team selects the coils and the pump pack together: send the supply and extract airflows, air temperatures and space available, or the details of the existing coils. The pump curves for both models are in the Reclaim Plus Pump Pack Leaflet.
Yes. Run around coil pump pack, runaround pump set and run-around pump skid all describe the pump, pressurisation and expansion equipment that circulates the loop between the coils of a runaround heat recovery system. SPC’s packs are called Reclaim Plus Pump Packs.
Yes. Both models are suitable for glycol solutions of up to 30% for frost protection. Some form of frost protection should always be considered on water systems, but glycol reduces coil performance and increases the fluid pressure drop, so tell SPC the glycol percentage when the coils are selected.
With the circulating pump’s inverter speed control. On a runaround system the pump runs at the flow rate specified for the coils, and the flow is adjusted with the pump speed rather than by closing valves. IOM 39 sets out the pump’s operating modes and settings.
The packs are designed for indoor installation in a dry, well ventilated plant room. Where a pack has to be mounted outdoors, it needs a ventilated, weatherproof enclosure to protect it.
Yes. Terminals on the pack allow remote enable and disable switching, so a building management system or the air handling unit’s controls can start and stop the pack. A remote control device for the circulating pump’s features is also supplied as standard.
Very little. The motor bearings are sealed for life. Check the glycol concentration, keep the make-up water feed clear, keep the motor’s cooling fins clean, vent the system regularly and, if the system stands idle, run the pump briefly each week. Never run the pump dry or with its isolating valves closed. Full details are in IOM 39.
SPC supplies the pump pack, and the runaround coils if needed, for installation, filling and commissioning by your M&E contractor, following the Reclaim Plus Pump Pack IOM 39. SPC’s technical team can answer questions along the way.
