Single Coil
500 litres
Twin Coil
500 litres
Single Coil
800-1500 litres
Twin Coil
800-1500 litres
Storage Vessel
500-1000 litres
Storage Vessel
1500-3000 litres

Juniper® PW

Commercial Hot Water Calorifier

The Juniper PW (Polywarm®) hot water calorifier is available as either a single coil or twin coil, and as a DHW storage vessel. The calorifier capacities range from 500-1500 litres, whilst the DHW storage vessel ranges from 500-3000 litres.

5

5 Year Tank
Warranty*

2

2 Year Parts
Warranty*

WRAS

WRAS Approved

ErP

ErP Part L
Compliant

Single Coil

Polywarm® single coil. Available in a range of 4 models from 500-1500 litres.

In Stock

Available in
5-7 working days.

Twin Coil

Polywarm® twin coil. Available in a range of 4 models from 500-1500 litres.

Made to Order

Available in 5-6 weeks.

Storage Vessel

Polywarm® storage vessel. Available in a range of 7 models from 500-3000 litres.

Made to Order

Available in 5-6 weeks.

  • Single/twin coil calorifiers range from 500-1500 litres

  • DHW storage vessels range from 500-3000 litres

  • 8 calorifier models / 7 storage vessel models

  • Electric immersion elements (optional)
    (1.5-3kW single phase)
    (6-12kW three phase)

  • WRAS approved Polywarm® coating

  • WRAS approved unvented kits

  • Cathode protection

  • Digital control

  • Energy class C

*Subject to Terms & Conditions
Downloads
Technical Data
200300500
Energy efficiency classBC
Total capacitylitres249351570
DHW capacitylitres193286462
Heating circuit capacitylitres5665108
Maximum temperature of DHW tank (secondary)°C90
Maximum working pressure of DHW tank (secondary)bar8
Maximum temperature in heating circuit°C110
Maximum pressure in heating circuitbar3
Heat exchange surface area in heating circuit1.62.43.1
Heating circuit flow ratelitres/hr160024002900
Temperature loss°C/hr0.280.250.19
Expansion vessel charge pressurebar3.5
Expansion valve settingbar6
T&P valve set opening pressurebar7
T&P valve set opening temperature°C90
Performance (when primary flow 80°C/return 60°C & cold inlet 10°C)
Heat transfer ratekW23.235.845.3
Primary circuit pressure dropkPa0.440.1370.85
10 minute peak output @ 50°C Δtlitres259387592
1st hour continuous output @ 50°C Δtlitres/hr5928941242
Continuous output @ 50°C Δtlitres/hr399608780
Heat up time @ 50°C Δtminutes292835
Optional immersion heater
ModelsVolume of water heated by the electric immersion heaterSINGLE PHASETHREE PHASE
1.5kW6kW
Heat up time from Δ 50°C with immersion heater
litreshours
2001935.8-
3002868.2-
50046213.34.7