Heatmaster 100 N - Manual (Page 12)

11
INSTALLATION
HEATING CONNECTION
The HeatMaster has two connections at the rear that can be used to
connect a central heating circuit. Connecting a heating system may
reduce the domestic hot water performance.
Expansion
The HM 60 is fitted with an 8 litre expansion vessel. HM 70/100
models are fitted with two 10 litre expansion vessels, and the
HM 150 Jumbo is fitted with four 8 litre expansion vessels. These
expansion vessels are sized for hot water operation only. If a heating
system is connected to the primary circuit, calculate the expansion
capacity necessary for the total volume of the heating system.
(Refer
to the technical instructions from a relevant manufacturer of expansion vessels) .
Example of a single circuit connection
1. 3-way valve
2. Heating pump
3. Non-return valve
4. Isolating valves
5. Safety valve set to 3 bar with pressure gauge
6. Expansion vessel
7. Drain cock
8. Controller
1
4
2
6
4
3
5
8
I O
7
WARNING
The pimary safety valve is supplied with a plastic tube
connected to the discharge outlet - this is for test
purposes only and should be removed. The safety
valve should be connected to a drain using a metallic
pipe eg. copper.
OIL SUPPLY CONNECTIONS - ACV BM BURNERS
(If another make of buner is fitted please refer to that manufacturers technical
manual)
Installation without return
Installation with return
H
max 4m
L1
L1
L1
H
H
max 4m
L (m) (L = H + L1)
H (m) Ø int. 8 mm Ø int. 10 mm
0.5 10 20
1 20 40
1.5 40 80
2 60 100
L (m) (L = H + L1)
H (m) Ø int. 8 mm Ø int. 10 mm
0 35 100
0.5 30 100
1 25 100
1.5 20 90
2 15 70
2 8 30
3.5 6 20