Worcester GR2300iW C Installation And Maintenance Instructions

Replacement parts
Greenstar 2000 – 6 721 820 552 (2021/02)
68
10.3 Checking the strainer in the cold water pipe
NOTICE
Risk of damage to plastic thread
Re-connection of pipe connection union nut.
▶ Do not over-tighten the nut due to risk of stripping the thread.
1. Undo the nut.
2. Remove the clip.
3. Pull out the pressure relief valve.
Fig. 91 Remove the pressure relief valve (heating circuit)
1. Remove the clip.
2. Pull out the insert.
3. Check strainer for contamination.
Fig. 92 Checking the strainer in the cold water pipe
10.4 Checking the plate heat exchanger
If the DHW output is insufficient:
▶ Check the strainer in the cold water pipe for contamination.
▶ Remove the plate heat exchanger and replace if necessary.
1. Remove the screw.
2. Remove the plate heat exchanger.
Fig. 93 Removing the plate heat exchanger
10.5 Checking the expansion vessel
The expansion vessel must be checked every year.
▶ If necessary, adjust the expansion vessel pre-charge pressure to the
static head of the heating system.
10.6 Adjusting the operating pressure of the heating
system
Table 35
If the indicator is below 1 bar when the system is cold:
▶ Top up the water until the indicator is between 1 bar and 1.5 bar
again.
If pressure is not being maintained:
▶ Check tightness of expansion vessel and heating system.
0010033853-001
1.
2.
3.
1.
2.3.
0010006636-002
Display on the pressure gauge
1 bar Minimum charge pressure (when system is cold)
1 - 1.5 bar Optimal charge pressure
3 bar Maximum charge pressure at maximum heating
water temperature must not be exceeded (pressure
relief valve opens).
0010005834-002
1.
2.

Worcester GR2300iW C Specifications

General

Brand	Worcester
Model	GR2300iW C
Category	Boiler
Language	English