Grant HPiD6 User Manual

Section 4: Sealed SystemPage 16
4.1 Sealed System Requirements
2
1
2 3
4
5 6
7
8
9
15
Static head of system
10
11
10
11
13
14
12
Figure 4-1: Sealed System heating components
4 Sealed Systems
Table 4-2: Sealed System heating components key
Key Description
1 Expansion vessel
2 Pressure gauge
3 Pressure relief valve
4 Tundish
5 Removable filling loop
6 Double check valve
7 Automatic air vent
8 Thermostatic radiator valve
9 Automatic bypass
10 Flexible hose
11 Isolation valve
12 Buffer (optional)
13 Motorised 2-port valves
14
Optional additional circulating pump
(refer to Section 8.3.7)
15 Drain point
All Grant Aerona³ heat pumps must be used with sealed systems
complying with the requirements of BS EN 12828, BS EN 12831 and
BS EN 14336.
The system must be provided with the following items:
• Diaphragm expansion vessel complying with BS EN 13831
• Pressure gauge
• Pressure relief (safety) valve
• Approved method for filling the system
Expansion vessel
The expansion vessel can be fitted in either the return or flow
pipework in any of the recommended positions as shown in Figure
4-1. To reduce the operating temperature of the expansion vessel,
position it below the pipe to which it is connected.
The expansion vessel may be positioned away from the system,
providing the connecting pipe is not less than 13 mm diameter. If the
expansion vessel is connected via a flexible hose, care must be taken
to ensure that the hose is not twisted.
Ensure that the expansion vessel used is of sufficient size for
the system volume.
Refer to BS 7074:1:1989 or The Domestic Heating Design
Guide for sizing the required vessel.
NOTE
!
Optional

Grant HPiD6 Specifications

General

Brand	Grant
Model	HPiD6
Category	Heat Pump
Language	English