Technical data

Page 5
BOILERMATE
A-CLASS
OV
1.2 TECHNICAL DATA
Notes:-
1. The BoilerMate 225 appliance is suitable for use in large properties because it produces the same ‘peak hour output’ as a typical 350-
400 litre unvented cylinder. For properties requiring the BMA 225 the incoming main should be a minimum of 32mm MDPE with
a pressure of not less than 2 bar dynamic and an adequate flow in line with the pipe sizing calculations. In many cases, properties
of this size will benefit from having 2 smaller sized appliances located adjacent to the areas of peak hot water use. This will allow
2 heating zones to be provided and remove the need to provide trace heating on the hot water system.
2. A plastic feed and expansion cistern will be supplied separately including ballvalve, float and overflow fitting.
3. The flow rates are based on a 35°C temperature rise and assume normal pressure and adequate flow to the appliance. The actual
flow rate from the appliance is automatically regulated to a maximum of 28 litres/min.
4. Unit is supplied on a 100mm high installation base.
5. The domestic hot water outlet temperature is automatically regulated to approximately 52°C at the bath flow rate of 18 litres/min
recommended by BS 6700. The temperature is not user adjustable.
1.0 DESIGN
Model BMA 125 OV BMA 145 OV BMA 185 OV BMA 210 OV BMA 225 OV
Weight (empty)
45 47 50 51 56
Weight (full)
177 187 197 215 244
DHW Pump
Grundfos UPR 15/50 Grundfos UPR 15/50 Grundfos UPR 15/50 Grundfos UPR 15/50 Grundfos UPR 15/50
Heating Pump
Grundfos UPS 15/50 Grundfos UPS 15/50 Grundfos UPS 15/50 Grundfos UPS 15/60 Grundfos UPS 15/60
Boiler Pump
Grundfos UPS 15/50 Grundfos UPS 15/50 Grundfos UPS 15/50 Grundfos UPS 15/60 Grundfos UPS 15/60
Primary/heating
pipe connections
22mm 22mm 22mm 28mm 28mm
MCW & DHW pipe
connections
22mm 22mm 22mm 22mm 22mm
Cold feed/expansion
connection
22mm 22mm 22mm 22mm 22mm
Safety open vent
connection
22mm 22mm 22mm 22mm 22mm
Primary return
(for summer use
bathroom towel rail)
15mm 15mm 15mm 15mm 15mm
Maximum summer
towel rail load
0.15kW 0.75kW 1.00kW 1.25 kW 1.5 kW
Drain connection
R ½” R ½” R ½” R ½” R ½”
Maximum Head 10 meters 10 meters 10 meters 10 meters 10 meters
Hot water flow rate
(l/m) up to
35 35 35 35 35
Max heating system
size
12 kW 17 kW 20 kW 25 kW 30 kW
‘Switch’
6 kW 6 kW 6 kW 6 kW 6 kW
Typical Dwelling Types
Bedrooms
1-3 2-3 2-4 3-5 4-6
Bathrooms
1 1 2 1 2 1 3 4
En-suite shower
1 2 1 4 2 4 2 0