Original: $3,427.09
-65%$3,427.09
$1,199.48The Story
The EHC 14.4kW SlimJim Electric Flow Boiler & 200L Pre-Plumbed Cylinder Package (EHCSJ15/200PPC) combines the compact SlimJim electric flow boiler with a factory pre-plumbed 200-litre Neptune Indirect Unvented Stainless Steel Cylinder. The cylinder ships with its controls, valves, and circulating pump already fitted and wired, cutting on-site installation time versus a standard indirect cylinder package.
Qualified Installation & Load Check Required
This boiler must be installed and electrically connected by a qualified electrician in accordance with BS7671. A load check must be carried out before installation, as the boiler draws 60.0A and the property's incoming supply may need upgrading. The supply must be protected at the meter position with a 30mA double-pole RCD (minimum 3mm contact separation) and a suitably rated MCB. A magnetic filter must be fitted to the return pipework before the circulation pump — failure to clean it annually may result in boiler or system failure and will affect warranty cover.
Pre-Plumbed for Faster Fit
The cylinder's automatic by-pass, wiring centre, combination valve, temperature and pressure relief valve, tundish, twin 2-port zone valves, filling loop, and high-efficiency circulating pump are pre-fitted and pre-wired at the factory. EHC estimate this can save up to 70% of installation time on the cylinder side compared with a standard indirect cylinder fitted with loose components.
"SJ15" Model Code vs Actual 14.4kW Output
This package is listed under EHC's model code prefix EHCSJ15, but the SlimJim boiler actually supplied and wired into this package is the manufacturer's confirmed 14.4kW model (EHCSJIM14.4KW on EHC's own technical documentation) — there is no 15kW tier in the SlimJim range. The "15" in the model code appears to be a rounded marketing designation rather than the literal rated output; all technical figures on this page reflect the genuine 14.4kW unit.
Compact Flow Boiler Footprint
At 912 x 203 x 172mm, the SlimJim is designed to maximise cupboard space compared with bulkier system boiler designs, while remaining fully controllable via its front panel.
Pre-Wired Cylinder Controls
The cylinder's wiring centre, zone valves, and pump are pre-connected at the factory, reducing the electrical terminations an installer needs to make on site.
Three-Stage Output Control
On-board dip switches allow the boiler's rated output to be staged down on site, giving some flexibility to match the installed heat load without needing a different chassis.
High-Current Safety Cut-Out
A dedicated WT3 safety thermal cut-out disconnects the boiler if the internal temperature reaches approximately 100°C, protecting the heat exchanger from failure.
Faster DHW Recovery Than Direct
As an indirect cylinder heated via the boiler's primary coil, recovery is markedly quicker than an equivalent-size Direct (immersion-only) cylinder.
No Flue, No Combustion Byproducts
As a fully electric flow boiler, the SlimJim requires no flue, no gas supply, and no annual gas safety check, simplifying installation versus a fossil-fuel system boiler.
| Boiler — 14.4kW SlimJim (General) | |
| Model / MPN | EHCSJ15/200PPC |
| Boiler chassis | SlimJim Electric Flow Boiler |
| Boiler dimensions (H x W x D) | 912 x 203 x 172mm |
| Boiler weight | ≈11kg |
| Boiler connections | 22mm compression (flow top, return bottom) |
| Safety class | IP22 |
| Outflow water temperature range | 30 – 80°C |
| Max. water temperature | 100°C |
| Overheat protection cut-out | 100°C |
| Max. system pressure | 3 bar |
| Min. system pressure | 0.5 bar |
| Boiler — 14.4kW SlimJim (Electrical) | |
| Electrical supply | 240V 1ph 50Hz |
| Load current | 60.0A |
| Minimum permitted cable diameter* | 16mm² |
| Recommended protection (MCB) | 80A |
| Max. allowed network impedance | 0.22Ω |
| Heat output | 49,135 BTU/h |
| ErP rating | D |
| Cylinder — 200L Pre-Plumbed Indirect | |
| Cylinder capacity | 200 litres |
| Cased height | 1120mm |
| Cased diameter | 710mm |
| Construction | Duplex stainless steel, TIG welded |
| Factory pressure test | 15 bar |
| Insulation | CFC- and HCFC-free polyurethane foam |
| Regulatory status | Controlled service – England & Wales Building Reg. G3 / Scotland Technical Standard P3 / N. Ireland Building Reg. Part F |
| Max. inlet mains water pressure | 12 bar |
| Operating pressure | 3.0 bar |
| Expansion vessel charge pressure | 3.0 bar |
| Expansion valve opening pressure | 6.0 bar |
| Max. operating pressure | 7.0 bar |
| T&P relief valve opening | 7.0 bar |
| Immersion element | 3kW, 240V, Incoloy |
| Pre-Plumbed Pack — Included Components | |
| Controls | Pre-wired wiring centre |
| Valves | Combination valve, twin 2-port zone valves |
| Safety | Temperature & pressure relief valve, tundish |
| Circulation | High-efficiency circulating pump |
| Fill/vent | Filling loop, automatic by-pass |
| Warranty | |
| Boiler warranty | 2 years parts & labour, subject to registration and annual servicing |
| Cylinder warranty | 2 years parts & labour from commissioning, subject to registration |
| Stainless steel inner vessel | 25-year guarantee (domestic installations) |
*Minimum permitted cable size; actual installation cable size must be calculated by a qualified electrician per BS7671, accounting for cable type and installation method.
Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Description
The EHC 14.4kW SlimJim Electric Flow Boiler & 200L Pre-Plumbed Cylinder Package (EHCSJ15/200PPC) combines the compact SlimJim electric flow boiler with a factory pre-plumbed 200-litre Neptune Indirect Unvented Stainless Steel Cylinder. The cylinder ships with its controls, valves, and circulating pump already fitted and wired, cutting on-site installation time versus a standard indirect cylinder package.
Qualified Installation & Load Check Required
This boiler must be installed and electrically connected by a qualified electrician in accordance with BS7671. A load check must be carried out before installation, as the boiler draws 60.0A and the property's incoming supply may need upgrading. The supply must be protected at the meter position with a 30mA double-pole RCD (minimum 3mm contact separation) and a suitably rated MCB. A magnetic filter must be fitted to the return pipework before the circulation pump — failure to clean it annually may result in boiler or system failure and will affect warranty cover.
Pre-Plumbed for Faster Fit
The cylinder's automatic by-pass, wiring centre, combination valve, temperature and pressure relief valve, tundish, twin 2-port zone valves, filling loop, and high-efficiency circulating pump are pre-fitted and pre-wired at the factory. EHC estimate this can save up to 70% of installation time on the cylinder side compared with a standard indirect cylinder fitted with loose components.
"SJ15" Model Code vs Actual 14.4kW Output
This package is listed under EHC's model code prefix EHCSJ15, but the SlimJim boiler actually supplied and wired into this package is the manufacturer's confirmed 14.4kW model (EHCSJIM14.4KW on EHC's own technical documentation) — there is no 15kW tier in the SlimJim range. The "15" in the model code appears to be a rounded marketing designation rather than the literal rated output; all technical figures on this page reflect the genuine 14.4kW unit.
Compact Flow Boiler Footprint
At 912 x 203 x 172mm, the SlimJim is designed to maximise cupboard space compared with bulkier system boiler designs, while remaining fully controllable via its front panel.
Pre-Wired Cylinder Controls
The cylinder's wiring centre, zone valves, and pump are pre-connected at the factory, reducing the electrical terminations an installer needs to make on site.
Three-Stage Output Control
On-board dip switches allow the boiler's rated output to be staged down on site, giving some flexibility to match the installed heat load without needing a different chassis.
High-Current Safety Cut-Out
A dedicated WT3 safety thermal cut-out disconnects the boiler if the internal temperature reaches approximately 100°C, protecting the heat exchanger from failure.
Faster DHW Recovery Than Direct
As an indirect cylinder heated via the boiler's primary coil, recovery is markedly quicker than an equivalent-size Direct (immersion-only) cylinder.
No Flue, No Combustion Byproducts
As a fully electric flow boiler, the SlimJim requires no flue, no gas supply, and no annual gas safety check, simplifying installation versus a fossil-fuel system boiler.
| Boiler — 14.4kW SlimJim (General) | |
| Model / MPN | EHCSJ15/200PPC |
| Boiler chassis | SlimJim Electric Flow Boiler |
| Boiler dimensions (H x W x D) | 912 x 203 x 172mm |
| Boiler weight | ≈11kg |
| Boiler connections | 22mm compression (flow top, return bottom) |
| Safety class | IP22 |
| Outflow water temperature range | 30 – 80°C |
| Max. water temperature | 100°C |
| Overheat protection cut-out | 100°C |
| Max. system pressure | 3 bar |
| Min. system pressure | 0.5 bar |
| Boiler — 14.4kW SlimJim (Electrical) | |
| Electrical supply | 240V 1ph 50Hz |
| Load current | 60.0A |
| Minimum permitted cable diameter* | 16mm² |
| Recommended protection (MCB) | 80A |
| Max. allowed network impedance | 0.22Ω |
| Heat output | 49,135 BTU/h |
| ErP rating | D |
| Cylinder — 200L Pre-Plumbed Indirect | |
| Cylinder capacity | 200 litres |
| Cased height | 1120mm |
| Cased diameter | 710mm |
| Construction | Duplex stainless steel, TIG welded |
| Factory pressure test | 15 bar |
| Insulation | CFC- and HCFC-free polyurethane foam |
| Regulatory status | Controlled service – England & Wales Building Reg. G3 / Scotland Technical Standard P3 / N. Ireland Building Reg. Part F |
| Max. inlet mains water pressure | 12 bar |
| Operating pressure | 3.0 bar |
| Expansion vessel charge pressure | 3.0 bar |
| Expansion valve opening pressure | 6.0 bar |
| Max. operating pressure | 7.0 bar |
| T&P relief valve opening | 7.0 bar |
| Immersion element | 3kW, 240V, Incoloy |
| Pre-Plumbed Pack — Included Components | |
| Controls | Pre-wired wiring centre |
| Valves | Combination valve, twin 2-port zone valves |
| Safety | Temperature & pressure relief valve, tundish |
| Circulation | High-efficiency circulating pump |
| Fill/vent | Filling loop, automatic by-pass |
| Warranty | |
| Boiler warranty | 2 years parts & labour, subject to registration and annual servicing |
| Cylinder warranty | 2 years parts & labour from commissioning, subject to registration |
| Stainless steel inner vessel | 25-year guarantee (domestic installations) |
*Minimum permitted cable size; actual installation cable size must be calculated by a qualified electrician per BS7671, accounting for cable type and installation method.
